{"id":4829,"date":"2026-03-18T12:21:45","date_gmt":"2026-03-18T11:21:45","guid":{"rendered":"https:\/\/grafhartmetall.com\/aluminiumoxid-keramik\/"},"modified":"2026-04-16T16:05:09","modified_gmt":"2026-04-16T14:05:09","slug":"aluminiumoxid-keramik","status":"publish","type":"page","link":"https:\/\/grafhartmetall.com\/en\/aluminiumoxid-keramik\/","title":{"rendered":"Aluminium oxide ceramics"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ka6fr2hs-c42dae6f1cc4fc077ab56d3fe6e964bf\">\n.avia-section.av-ka6fr2hs-c42dae6f1cc4fc077ab56d3fe6e964bf{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/grafhartmetall.com\/wp-content\/uploads\/2020\/05\/hero2.jpg);\nbackground-position:50% 50%;\nbackground-attachment:fixed;\n}\n.avia-section.av-ka6fr2hs-c42dae6f1cc4fc077ab56d3fe6e964bf .av-section-color-overlay{\nopacity:0.9;\nbackground-color:#f9f9f9;\n}\n#top .avia-section.av-ka6fr2hs-c42dae6f1cc4fc077ab56d3fe6e964bf .scroll-down-link{\ncolor:#d8121c;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-ka6fr2hs-c42dae6f1cc4fc077ab56d3fe6e964bf main_color avia-section-large avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-full-stretch avia-bg-style-fixed av-section-color-overlay-active container_wrap fullsize'  data-section-bg-repeat='stretch'><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><a href='#next-section' title='' class='scroll-down-link av-custom-scroll-down-color' aria-hidden='true' data-av_icon='\ue877' data-av_iconfont='entypo-fontello'><\/a><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4829'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-27itm-ae757942a0dd48460bd9d0a9373ad9ed\">\n.flex_column.av-27itm-ae757942a0dd48460bd9d0a9373ad9ed{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-27itm-ae757942a0dd48460bd9d0a9373ad9ed av_one_full  avia-builder-el-1  el_before_av_one_half  avia-builder-el-first  custom-greyscale first flex_column_div av-animated-generic left-to-right av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-68ityq-4533d55e616726d1487f78d329b561ae\">\n#top .av-special-heading.av-68ityq-4533d55e616726d1487f78d329b561ae{\npadding-bottom:10px;\nfont-size:40px;\n}\nbody .av-special-heading.av-68ityq-4533d55e616726d1487f78d329b561ae .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-68ityq-4533d55e616726d1487f78d329b561ae .av-special-heading-tag{\nfont-size:40px;\n}\n.av-special-heading.av-68ityq-4533d55e616726d1487f78d329b561ae .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-68ityq-4533d55e616726d1487f78d329b561ae .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-68ityq-4533d55e616726d1487f78d329b561ae .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-68ityq-4533d55e616726d1487f78d329b561ae av-special-heading-h1 blockquote modern-quote modern-centered  avia-builder-el-2  avia-builder-el-no-sibling  av-inherit-size'><h1 class='av-special-heading-tag'  itemprop=\"headline\"  >ALUMINUM OXIDE CERAMICS: A VERSATILE HIGH-PERFORMANCE MATERIAL<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div><div class='flex_column_table av-m4jd0dfp-2a412ac9c21710b86eeedafe018e978e sc-av_one_half av-break-at-tablet-flextable av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m4jd0dfp-2a412ac9c21710b86eeedafe018e978e\">\n.flex_column.av-m4jd0dfp-2a412ac9c21710b86eeedafe018e978e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-m4jd0dfp-2a412ac9c21710b86eeedafe018e978e av_one_half  avia-builder-el-3  el_after_av_one_full  el_before_av_one_half  custom-greyscale first av-break-at-tablet flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic left-to-right av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-m4jcyoz1-d7fa80af9b0599149a8fbcf65f3727a3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Aluminum oxide (Al\u2082O\u2083)<\/strong>\u00a0\u2013 known in its crystalline form as corundum \u2013 is the most widely used material in\u00a0<a href=\"https:\/\/grafhartmetall.com\/en\/technical-ceramics\/\">technical ceramics<\/a>\u00a0. This compound of aluminum and oxygen is characterized by an outstanding combination of high\u00a0<strong>hardness<\/strong>\u00a0, excellent wear resistance, and very good electrical insulation. At the same time,\u00a0<strong>aluminum oxide ceramics<\/strong>\u00a0offer an attractive price-performance ratio that few other ceramic materials in industry can match.<\/p>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-9vjhci-40cf128ed4181f1584685e23c5ac1a54\">\n.flex_column.av-9vjhci-40cf128ed4181f1584685e23c5ac1a54{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-9vjhci-40cf128ed4181f1584685e23c5ac1a54 av_one_half  avia-builder-el-5  el_after_av_one_half  avia-builder-el-last  av-break-at-tablet flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic right-to-left av-zero-column-padding  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mh1wh6zb-ee497d323ce17f13054deb6721cf9546\">\n.avia-image-container.av-mh1wh6zb-ee497d323ce17f13054deb6721cf9546 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mh1wh6zb-ee497d323ce17f13054deb6721cf9546 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mh1wh6zb-ee497d323ce17f13054deb6721cf9546 av-styling-no-styling av-img-linked avia_animated_image av-animated-when-visible-95 right-to-left avia-align-center  avia-builder-el-6  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><a href=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-1030x1030.webp\" data-srcset=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-1030x1030.webp 1030w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-300x300.webp 300w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-80x80.webp 80w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-768x768.webp 768w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-36x36.webp 36w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-180x180.webp 180w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-705x705.webp 705w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall.webp 1460w\" data-sizes=\"(max-width: 1030px) 100vw, 1030px\" class='avia_image '  aria-label='aluminiumoxid-keramik-graf-hartmetall'><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-4697 avia-img-lazy-loading-not-4697 avia_image ' src=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-300x300.webp\" alt='Aluminiumoxid-Keramik: Bauteil von Graf Hartmetall' title='aluminiumoxid-keramik-graf-hartmetall'  height=\"300\" width=\"300\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-300x300.webp 300w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-1030x1030.webp 1030w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-80x80.webp 80w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-768x768.webp 768w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-36x36.webp 36w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-180x180.webp 180w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall-705x705.webp 705w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/aluminiumoxid-keramik-graf-hartmetall.webp 1460w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/div><\/div><\/div><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-71ug3y-d42405f39372c1d8e4bfee5a695b34de\">\n.avia-section.av-71ug3y-d42405f39372c1d8e4bfee5a695b34de{\nbackground-color:#f9f9f9;\nbackground-image:unset;\n}\n<\/style>\n<div id='walzrollen'  class='avia-section av-71ug3y-d42405f39372c1d8e4bfee5a695b34de main_color avia-section-large avia-no-border-styling  avia-builder-el-7  el_after_av_section  el_before_av_section  avia-bg-style-fixed container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4829'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-eheod0-f26961999e0404fe8c0e00ecd91e6b02\">\n#top .av-special-heading.av-eheod0-f26961999e0404fe8c0e00ecd91e6b02{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-eheod0-f26961999e0404fe8c0e00ecd91e6b02 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-eheod0-f26961999e0404fe8c0e00ecd91e6b02 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-eheod0-f26961999e0404fe8c0e00ecd91e6b02 av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-8  el_before_av_one_half  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >PRODUCTION AND VARIANTS<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div class='flex_column_table av-cr1y6c-f9a25b848bc675e613c32d8d17f35191 sc-av_one_half av-break-at-tablet-flextable av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-cr1y6c-f9a25b848bc675e613c32d8d17f35191\">\n.flex_column.av-cr1y6c-f9a25b848bc675e613c32d8d17f35191{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-cr1y6c-f9a25b848bc675e613c32d8d17f35191 av_one_half  avia-builder-el-9  el_after_av_heading  el_before_av_one_half  custom-greyscale first av-break-at-tablet flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic left-to-right av-zero-column-padding  '     ><section  class='av_textblock_section av-asxatw-12e85c8dc715a28974db5fb7503c7049 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Aluminum oxide (Al\u2082O\u2083) is predominantly produced synthetically from bauxite using the Bayer process. The resulting high-purity powder forms the basis for the manufacture of ceramic components.<br \/>\nDuring sintering of the aluminum oxide powder at temperatures of approximately 1,600\u20131,700 \u00b0C, the microstructure densifies into a dense, fine-grained structure.<\/p>\n<p><strong>The properties of the finished material can be specifically influenced via purity level, grain size and sintering parameters.<\/strong><\/p>\n<ul>\n<li><strong>High-purity variants (99.5\u201399.9% Al\u2082O\u2083)<\/strong>achieve maximum hardness, strength and chemical resistance \u2013 making them ideal for applications with the most demanding requirements.<\/li>\n<li><strong>Technically pure variants (96\u201399% Al\u2082O\u2083)<\/strong>offer an optimal balance of mechanical properties and economical manufacturing and are suitable for a wide range of industrial applications.<\/li>\n<li><strong>Mixed ceramics (&lt; 96 % Al\u2082O\u2083)<\/strong>contain additives such as silicon dioxide or magnesium oxide, which improve sintering behavior and reduce manufacturing costs.<\/li>\n<\/ul>\n<p>This targeted microstructure design results in\u00a0<strong>aluminum oxide ceramic grades<\/strong>\u00a0with different property profiles \u2013 tailored to the respective application area.<\/p>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-8oww10-802a44861fef4eb567493219b6f0e532\">\n.flex_column.av-8oww10-802a44861fef4eb567493219b6f0e532{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-8oww10-802a44861fef4eb567493219b6f0e532 av_one_half  avia-builder-el-11  el_after_av_one_half  avia-builder-el-last  av-break-at-tablet flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic right-to-left av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" 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100vw, 1030px\" data-rel='gallery-1' data-prev-img='https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/ofen-herstellung-al2o3-keramik-graf-hartmetall-1030x687.webp' class='lightbox ' data-onclick='2' title='ofen-herstellung-al2o3-keramik-graf-hartmetall'  itemprop=\"thumbnailUrl\"  ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-4710 avia-img-lazy-loading-not-4710\"   src=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/ofen-herstellung-al2o3-keramik-graf-hartmetall-180x180.webp\" width=\"180\" height=\"180\"  title='ofen-herstellung-al2o3-keramik-graf-hartmetall' alt='Herstellung von al2o3 bei Graf Hartmetall' srcset=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/ofen-herstellung-al2o3-keramik-graf-hartmetall-180x180.webp 180w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/ofen-herstellung-al2o3-keramik-graf-hartmetall-80x80.webp 80w, 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\/><\/a><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-dh13as-6a47c4c48858e8c254dd34012e6b9ba6\">\n#top .hr.hr-invisible.av-dh13as-6a47c4c48858e8c254dd34012e6b9ba6{\nheight:15px;\n}\n<\/style>\n<div  class='hr av-dh13as-6a47c4c48858e8c254dd34012e6b9ba6 hr-invisible  avia-builder-el-17  el_after_av_image  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-cz9y1g-0a3f9a33f2b42889b42a78c330f1895a\">\n.flex_column.av-cz9y1g-0a3f9a33f2b42889b42a78c330f1895a{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-cz9y1g-0a3f9a33f2b42889b42a78c330f1895a av_three_fourth  avia-builder-el-18  el_after_av_one_fourth  avia-builder-el-last  custom-greyscale flex_column_div av-animated-generic left-to-right av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-incv6q-8a18825f6cf396ebffec5c541e1215f5\">\n#top .av-special-heading.av-incv6q-8a18825f6cf396ebffec5c541e1215f5{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-incv6q-8a18825f6cf396ebffec5c541e1215f5 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-incv6q-8a18825f6cf396ebffec5c541e1215f5 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-incv6q-8a18825f6cf396ebffec5c541e1215f5 av-special-heading-h2 blockquote modern-quote  avia-builder-el-19  el_before_av_hr  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >OVERVIEW OF THE PROPERTIES OF ALUMINUM OXIDE CERAMICS<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-a77u44-624952920334c28ac34cbedef0660b09\">\n#top .hr.hr-invisible.av-a77u44-624952920334c28ac34cbedef0660b09{\nheight:15px;\n}\n<\/style>\n<div  class='hr av-a77u44-624952920334c28ac34cbedef0660b09 hr-invisible  avia-builder-el-20  el_after_av_heading  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-9wgj7o-7f89c47ae2705ff76aeda0950a6f5547 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>The unique\u00a0<strong>properties of aluminum oxide ceramics<\/strong>\u00a0make it the material of choice for numerous demanding applications \u2013 from electronics to grinding technology. A closer look reveals why:<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2e0ldw-0d0b2a50f2639fe878425cbd5056dd7c\">\n#top .hr.hr-invisible.av-2e0ldw-0d0b2a50f2639fe878425cbd5056dd7c{\nheight:15px;\n}\n<\/style>\n<div  class='hr av-2e0ldw-0d0b2a50f2639fe878425cbd5056dd7c hr-invisible  avia-builder-el-22  el_after_av_textblock  el_before_av_hr '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7albz8-ce4e2df3e1bd14546da9a836f71d4e09\">\n#top .hr.hr-invisible.av-7albz8-ce4e2df3e1bd14546da9a836f71d4e09{\nheight:15px;\n}\n<\/style>\n<div  class='hr av-7albz8-ce4e2df3e1bd14546da9a836f71d4e09 hr-invisible  avia-builder-el-23  el_after_av_hr  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p><\/div>\n<\/p>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvxwu4n-5352fc1067b31b9daa9fd1cc8620416e\">\n.avia-section.av-mmvxwu4n-5352fc1067b31b9daa9fd1cc8620416e{\nmargin-top:0px;\nmargin-bottom:0px;\n}\n<\/style>\n<div id='av_section_4'  class='avia-section av-mmvxwu4n-5352fc1067b31b9daa9fd1cc8620416e main_color avia-section-huge avia-no-border-styling  avia-builder-el-24  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4829'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvy3fyr-8e9d08829c77a1b29d13a50bc9d53dc5\">\n#top .av-special-heading.av-mmvy3fyr-8e9d08829c77a1b29d13a50bc9d53dc5{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-mmvy3fyr-8e9d08829c77a1b29d13a50bc9d53dc5 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mmvy3fyr-8e9d08829c77a1b29d13a50bc9d53dc5 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mmvy3fyr-8e9d08829c77a1b29d13a50bc9d53dc5 av-special-heading-h3 custom-color-heading blockquote modern-quote  avia-builder-el-25  el_before_av_textblock  avia-builder-el-first '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >OVERVIEW OF THE PROPERTIES OF ALUMINUM OXIDE CERAMICS<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-560cfo-ceab2649db57b177b9a8016ae3aaea8a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><ul>\n<li>With values \u200b\u200bof 15\u201319 GPa (HV10) or HRA 90\u201393,\u00a0<strong>aluminum oxide<\/strong>is one of the hardest ceramic materials. The high\u00a0<strong>hardness of Al\u2082O\u2083 ceramics<\/strong>\u00a0ensures excellent wear resistance, even under highly abrasive conditions.<\/li>\n<li>Its flexural strength ranges from 360 to 600 MPa depending on purity, while compressive strength reaches 2,250\u20132,700 MPa\u2014making it well suited <strong>for permanently stressed components<\/strong>.<\/li>\n<\/ul>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvy486d-8f9a2ab5a9c9f338aacad3460f782724\">\n#top .av-special-heading.av-mmvy486d-8f9a2ab5a9c9f338aacad3460f782724{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-mmvy486d-8f9a2ab5a9c9f338aacad3460f782724 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mmvy486d-8f9a2ab5a9c9f338aacad3460f782724 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mmvy486d-8f9a2ab5a9c9f338aacad3460f782724 av-special-heading-h3 custom-color-heading blockquote modern-quote  avia-builder-el-27  el_after_av_textblock  el_before_av_textblock '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >ELECTRICAL INSULATION, TEMPERATURE RESISTANCE AND THERMAL CONDUCTIVITY<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-mmvv8ox8-c7e6a08236a172ee2c67fd9de5f51f61 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><ul>\n<li>With a specific resistance of 1\u00d710\u00b9\u2074 to 1\u00d710\u00b9\u2075 \u03a9cm, aluminum oxide offers excellent electrical insulation \u2013 even at elevated temperatures. This property makes Al\u2082O\u2083 ceramics indispensable in the electrical and semiconductor industries.<\/li>\n<li>Depending on the variant and purity level, aluminum oxide can be operated continuously at 1,200 to 1,700 \u00b0C. Within this temperature range, the ceramic remains dimensionally stable and mechanically resilient.<\/li>\n<li>Typical values \u200b\u200bare between 25 and 35 W\/(m\u00b7K). Compared to silicon carbide, aluminum oxide conducts heat less well, which is an advantage in certain applications (e.g., thermal insulation).<\/li>\n<\/ul>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvy4uqo-9098e30ff28d1d9c9523997af165a0fb\">\n#top .av-special-heading.av-mmvy4uqo-9098e30ff28d1d9c9523997af165a0fb{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-mmvy4uqo-9098e30ff28d1d9c9523997af165a0fb .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mmvy4uqo-9098e30ff28d1d9c9523997af165a0fb .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mmvy4uqo-9098e30ff28d1d9c9523997af165a0fb av-special-heading-h3 custom-color-heading blockquote modern-quote  avia-builder-el-29  el_after_av_textblock  el_before_av_textblock '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >DENSITY AND WEIGHT<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-mmvvrwyy-21fe8951ac010f56dc1c3ca2af4bfe60 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><ul>\n<li>With\u00a0<strong>a density of 3.75\u20133.95 g\/cm\u00b3, aluminium oxide is<\/strong>significantly lower than that of many metallic materials, which enables weight-saving designs.<\/li>\n<\/ul>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvy55tz-7ab59232d23b73054a8ed15ec8322d8a\">\n#top .av-special-heading.av-mmvy55tz-7ab59232d23b73054a8ed15ec8322d8a{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-mmvy55tz-7ab59232d23b73054a8ed15ec8322d8a .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mmvy55tz-7ab59232d23b73054a8ed15ec8322d8a .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mmvy55tz-7ab59232d23b73054a8ed15ec8322d8a av-special-heading-h3 custom-color-heading blockquote modern-quote  avia-builder-el-31  el_after_av_textblock  el_before_av_textblock '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >CHEMICAL RESISTANCE OF ALUMINUM OXIDE<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-mmvvs3a8-d6b35599b350bad33c4730cdf103c7c6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Aluminum oxide is largely inert to most acids, alkalis, and organic solvents at normal temperatures. Even in contact with molten metals, high-purity Al\u2082O\u2083 exhibits good corrosion resistance. Only concentrated hydrofluoric acid, hydrochloric acid, and strong alkalis at high temperatures can attack the surface. For demanding chemical environments, we always recommend individual material consultation.<\/p>\n<\/div><\/section>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-7wn884-fc22ac3f57c56809a98ce223e969b862\">\n.avia-section.av-7wn884-fc22ac3f57c56809a98ce223e969b862{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/grafhartmetall.com\/wp-content\/uploads\/2020\/05\/hero2.jpg);\nbackground-position:50% 50%;\nbackground-attachment:fixed;\n}\n.avia-section.av-7wn884-fc22ac3f57c56809a98ce223e969b862 .av-section-color-overlay{\nopacity:0.9;\nbackground-color:#f9f9f9;\n}\n<\/style>\n<div id='av_section_5'  class='avia-section av-7wn884-fc22ac3f57c56809a98ce223e969b862 main_color avia-section-large avia-no-border-styling  avia-builder-el-33  el_after_av_section  el_before_av_section  avia-full-stretch avia-bg-style-fixed av-section-color-overlay-active container_wrap fullsize'  data-section-bg-repeat='stretch'><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4829'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5rdt1w-d2f135136bfa4b9238a164cc7902a329\">\n.flex_column.av-5rdt1w-d2f135136bfa4b9238a164cc7902a329{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-5rdt1w-d2f135136bfa4b9238a164cc7902a329 av_one_full  avia-builder-el-34  el_before_av_one_half  avia-builder-el-first  custom-greyscale first flex_column_div av-animated-generic left-to-right av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvvdy56-92d7aecfa97929f14f841b4841530a86\">\n#top .av-special-heading.av-mmvvdy56-92d7aecfa97929f14f841b4841530a86{\npadding-bottom:10px;\nfont-size:40px;\n}\nbody .av-special-heading.av-mmvvdy56-92d7aecfa97929f14f841b4841530a86 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n#top #wrap_all .av-special-heading.av-mmvvdy56-92d7aecfa97929f14f841b4841530a86 .av-special-heading-tag{\nfont-size:40px;\n}\n.av-special-heading.av-mmvvdy56-92d7aecfa97929f14f841b4841530a86 .av-subheading{\nfont-size:15px;\n}\n\n@media only screen and (min-width: 480px) and (max-width: 767px){ \n#top #wrap_all .av-special-heading.av-mmvvdy56-92d7aecfa97929f14f841b4841530a86 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n\n@media only screen and (max-width: 479px){ \n#top #wrap_all .av-special-heading.av-mmvvdy56-92d7aecfa97929f14f841b4841530a86 .av-special-heading-tag{\nfont-size:0.8em;\n}\n}\n<\/style>\n<div  class='av-special-heading av-mmvvdy56-92d7aecfa97929f14f841b4841530a86 av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-35  avia-builder-el-no-sibling  av-inherit-size'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >INDUSTRIAL APPLICATIONS OF ALUMINUM OXIDE<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div><div class='flex_column_table av-4lpof8-7e970d06372f3742a440428b9aaf120e sc-av_one_half av-break-at-tablet-flextable av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4lpof8-7e970d06372f3742a440428b9aaf120e\">\n.flex_column.av-4lpof8-7e970d06372f3742a440428b9aaf120e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-4lpof8-7e970d06372f3742a440428b9aaf120e av_one_half  avia-builder-el-36  el_after_av_one_full  el_before_av_one_half  custom-greyscale first av-break-at-tablet flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic left-to-right av-zero-column-padding  column-top-margin'     ><section  class='av_textblock_section av-mmvvebwv-137a7fa361124b571718053cdf45a466 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>In practice,\u00a0<strong>aluminum oxide has proven its worth in an impressive range of industrial applications<\/strong>\u00a0. Depending on the degree of purity and component geometry, the material can be precisely tailored to a wide range of requirements.<\/p>\n<ul>\n<li>Mechanical engineering: Sliding rings, sealing discs, bearing bushings and valve components with high wear resistance and dimensional stability<\/li>\n<li>Electronics and semiconductors: substrates, printed circuit board carriers, insulators, housings, as well as wafer carriers and polishing plates made of high-purity Al\u2082O\u2083<\/li>\n<li>Chemical industry: Crucibles, reaction vessels, catalyst carriers and protective tubes for aggressive media at high temperatures<\/li>\n<li>Grinding and polishing technology: Grinding wheels, sandpaper and polishing pastes made from corundum<\/li>\n<li>Automotive industry: Catalyst carriers and sensor components<\/li>\n<li>Medical technology: Medical devices and prostheses thanks to bioinertness<\/li>\n<li>Textile industry: Thread guides and pulleys<\/li>\n<li>Renewable energies: Wear-resistant molded parts and linings for powder conveying systems in battery and solar cell manufacturing<\/li>\n<li>Wear technology: Hydraulic valve sleeves, turbines and impellers of sand mills<\/li>\n<\/ul>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2kn5ck-25c8170f3ef13ba9144e7214ad5ee32e\">\n.flex_column.av-2kn5ck-25c8170f3ef13ba9144e7214ad5ee32e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2kn5ck-25c8170f3ef13ba9144e7214ad5ee32e av_one_half  avia-builder-el-38  el_after_av_one_half  avia-builder-el-last  av-break-at-tablet flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic right-to-left av-zero-column-padding  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mmvvpswf-79770a7f72790fe4b4745367d54d4c32\">\n#top 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1000w\" sizes=\"auto, (max-width: 773px) 100vw, 773px\" \/><\/div><\/a><\/div><\/div><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jeef2s-6aadf79f422f17b4fb0a64dde7f7397e\">\n.avia-section.av-jeef2s-6aadf79f422f17b4fb0a64dde7f7397e{\nbackground-color:#f9f9f9;\nbackground-image:unset;\n}\n<\/style>\n<div id='walzrollen'  class='avia-section av-jeef2s-6aadf79f422f17b4fb0a64dde7f7397e main_color avia-section-large avia-no-border-styling  avia-builder-el-40  el_after_av_section  el_before_av_section  avia-bg-style-fixed container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4829'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-gu4vgk-53e8e67d9bb0418a175de2b06e1ae2e1\">\n#top .av-special-heading.av-gu4vgk-53e8e67d9bb0418a175de2b06e1ae2e1{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-gu4vgk-53e8e67d9bb0418a175de2b06e1ae2e1 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-gu4vgk-53e8e67d9bb0418a175de2b06e1ae2e1 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-gu4vgk-53e8e67d9bb0418a175de2b06e1ae2e1 av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-41  el_before_av_three_fifth  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >CRITERIA FOR MATERIAL SELECTION: ALUMINUM OXIDE IN COMPARISON<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div class='flex_column_table av-g9cmqc-853cc3f7678c627f0ea1b29398cd4bbf sc-av_three_fifth av-equal-height-column-flextable'>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-g9cmqc-853cc3f7678c627f0ea1b29398cd4bbf\">\n.flex_column.av-g9cmqc-853cc3f7678c627f0ea1b29398cd4bbf{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-g9cmqc-853cc3f7678c627f0ea1b29398cd4bbf av_three_fifth  avia-builder-el-42  el_after_av_heading  el_before_av_two_fifth  custom-greyscale first flex_column_table_cell av-equal-height-column av-align-middle av-animated-generic left-to-right av-zero-column-padding  '     ><p><section  class='av_textblock_section av-e6u8dg-14bf64ba9719bbac9450d440f046149c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Choosing the right material always depends on the specific application. The following classification provides guidance:<\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-co6fbo-f6d1c3bae08ae5f32f6d1cb9ae11efe3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div style=\"overflow-x: auto;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"text-align: left; padding: 8px;\">Characteristic<\/th>\n<th style=\"text-align: left; padding: 8px;\">Aluminum oxide (Al\u2082O\u2083)<\/th>\n<th style=\"text-align: left; padding: 8px;\">Silicon carbide (SiC)<\/th>\n<th style=\"text-align: left; padding: 8px;\">Tungsten carbide (WC-Co)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px;\">Hardness (HV10)<\/td>\n<td style=\"padding: 8px;\">15\u201319 GPa<\/td>\n<td style=\"padding: 8px;\">~24 GPa<\/td>\n<td style=\"padding: 8px;\">12\u201318 GPa<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Density<\/td>\n<td style=\"padding: 8px;\">3,75\u20133,95 g\/cm\u00b3<\/td>\n<td style=\"padding: 8px;\">ca. 3,10 g\/cm\u00b3<\/td>\n<td style=\"padding: 8px;\">14\u201315 g\/cm\u00b3<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Flexural strength<\/td>\n<td style=\"padding: 8px;\">360\u2013600 MPa<\/td>\n<td style=\"padding: 8px;\">300\u2013550 MPa<\/td>\n<td style=\"padding: 8px;\">1&#8217;500\u20133&#8217;500 MPa<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Thermal conductivity<\/td>\n<td style=\"padding: 8px;\">25\u201332 W\/(m\u00b7K)<\/td>\n<td style=\"padding: 8px;\">100\u2013140 W\/(m\u00b7K)<\/td>\n<td style=\"padding: 8px;\">60\u201380 W\/(m\u00b7K)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Max. operating temperature<\/td>\n<td style=\"padding: 8px;\">1&#8217;200\u20131&#8217;700 \u00b0C<\/td>\n<td style=\"padding: 8px;\">up to 1&#8217;600 \u00b0C<\/td>\n<td style=\"padding: 8px;\">500\u2013800 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Electrical insulation<\/td>\n<td style=\"padding: 8px;\">Excellent<\/td>\n<td style=\"padding: 8px;\">Semiconducting<\/td>\n<td style=\"padding: 8px;\">Conductive<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px;\">Toughness\/Fracture strength<\/td>\n<td style=\"padding: 8px;\">Low (brittle)<\/td>\n<td style=\"padding: 8px;\">Low (brittle)<\/td>\n<td style=\"padding: 8px;\">High<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div><\/section><\/p><\/div><div class='av-flex-placeholder'><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ahwzus-36ca93726d963d8eaa4702b5c0851c84\">\n.flex_column.av-ahwzus-36ca93726d963d8eaa4702b5c0851c84{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-ahwzus-36ca93726d963d8eaa4702b5c0851c84 av_two_fifth  avia-builder-el-45  el_after_av_three_fifth  el_before_av_hr  custom-greyscale flex_column_table_cell av-equal-height-column av-align-middle 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src=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/werkstoff-auswahl-graf-hartmetall-845x684.webp\" alt='Bauteile aus verschiedenen Werkstoffen' title='werkstoff-auswahl-graf-hartmetall'  height=\"684\" width=\"845\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/werkstoff-auswahl-graf-hartmetall-845x684.webp 845w, https:\/\/grafhartmetall.com\/wp-content\/uploads\/2026\/03\/werkstoff-auswahl-graf-hartmetall-495x400.webp 495w\" sizes=\"(max-width: 845px) 100vw, 845px\" \/><\/a><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5h90c4-8b565077be4a66b85774807b62eaf226\">\n#top .hr.hr-invisible.av-5h90c4-8b565077be4a66b85774807b62eaf226{\nheight:40px;\n}\n<\/style>\n<div  class='hr av-5h90c4-8b565077be4a66b85774807b62eaf226 hr-invisible  avia-builder-el-48  el_after_av_image  avia-builder-el-last  av-small-hide av-mini-hide'><span class='hr-inner '><span 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Autoclose: 1 -->\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4nbz6s-f266bc1dfcaa8c4888a351897bfc1142\">\n#top .hr.hr-invisible.av-4nbz6s-f266bc1dfcaa8c4888a351897bfc1142{\nheight:40px;\n}\n<\/style>\n<div  class='hr av-4nbz6s-f266bc1dfcaa8c4888a351897bfc1142 hr-invisible  avia-builder-el-49  el_after_av_two_fifth  el_before_av_textblock  av-small-hide av-mini-hide'><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-a797o-1aa6c613f886f60a973be44feaf337c1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Aluminum oxide is the preferred choice when electrical insulation, chemical resistance, and a good price-performance ratio are paramount. Where maximum toughness and impact resistance are required,\u00a0<a href=\"https:\/\/grafhartmetall.com\/en\/tungsten-carbide\/\">tungsten carbide<\/a>\u00a0-based hard metals offer clear advantages. For extreme temperatures or abrasion under thermal stress, <a href=\"https:\/\/grafhartmetall.com\/siliziumkarbid-werkstoff\/\">silicon carbide may\u00a0be the better\u00a0alternative<\/a>.<\/p>\n<\/div><\/section>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2ivgou-8382e805639019429adabdd48bc5c5a9\">\n.avia-section.av-2ivgou-8382e805639019429adabdd48bc5c5a9{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/grafhartmetall.com\/wp-content\/uploads\/2020\/05\/marketing-office-working-business-33999-1.webp);\nbackground-position:50% 50%;\nbackground-attachment:fixed;\n}\n.avia-section.av-2ivgou-8382e805639019429adabdd48bc5c5a9 .av-section-color-overlay{\nopacity:0.9;\nbackground-color:#f9f9f9;\n}\n<\/style>\n<div id='av_section_7'  class='avia-section av-2ivgou-8382e805639019429adabdd48bc5c5a9 main_color avia-section-large avia-no-border-styling  avia-builder-el-51  el_after_av_section  avia-builder-el-last  avia-full-stretch avia-bg-style-fixed av-section-color-overlay-active container_wrap fullsize'  data-section-bg-repeat='stretch'><div class=\"av-section-color-overlay-wrap\"><div class=\"av-section-color-overlay\"><\/div><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4829'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4yg51w-5d150b410c9ee519cd31f1235228efdc\">\n#top .av-special-heading.av-4yg51w-5d150b410c9ee519cd31f1235228efdc{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-4yg51w-5d150b410c9ee519cd31f1235228efdc .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-4yg51w-5d150b410c9ee519cd31f1235228efdc .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-4yg51w-5d150b410c9ee519cd31f1235228efdc av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-52  el_before_av_textblock  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >BUY ALUMINUM OXIDE CERAMIC COMPONENTS FROM GRAF HARTMETALL<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<section  class='av_textblock_section av-mh1y9nbt-4907f6eff22804ff1ee5bcb7f9085d94 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Are you still considering which material would be best suited for your\u00a0<a href=\"https:\/\/grafhartmetall.com\/en\/ceramic-components\/\">ceramic components<\/a>\u00a0? Or are you interested in\u00a0<strong>purchasing aluminum oxide ceramic components<\/strong>? Graf Hartmetall is your Swiss partner for advanced material solutions. Together with our established partner network, we support you from material selection and prototype development to the series production of your\u00a0<a href=\"https:\/\/grafhartmetall.com\/en\/\">precision parts<\/a>\u00a0\u2013 reliably and on schedule.<\/p>\n<p>Our experts will be happy to advise you!<\/p>\n<\/div><\/section>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1tim1a-4cbda6e1abdddd92ee3711a0b4342f1e\">\n#top .hr.hr-invisible.av-1tim1a-4cbda6e1abdddd92ee3711a0b4342f1e{\nheight:15px;\n}\n<\/style>\n<div  class='hr av-1tim1a-4cbda6e1abdddd92ee3711a0b4342f1e hr-invisible  avia-builder-el-54  el_after_av_textblock  el_before_av_button '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<div  class='avia-button-wrap av-25u1xu-2ffa428f5469af7f4d0eb3045b0261ef-wrap avia-button-center  avia-builder-el-55  el_after_av_hr  avia-builder-el-last '><a href='page'  class='avia-button av-25u1xu-2ffa428f5469af7f4d0eb3045b0261ef av-link-btn avia-icon_select-yes-right-icon avia-size-large avia-position-center av-icon-on-hover avia-color-theme-color'  ><span class='avia_iconbox_title' >Get in Touch Now!<\/span><span class='avia_button_icon avia_button_icon_right' aria-hidden='true' data-av_icon='\ue879' data-av_iconfont='entypo-fontello'><\/span><\/a><\/div>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":12,"featured_media":3411,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4829","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/pages\/4829","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/comments?post=4829"}],"version-history":[{"count":3,"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/pages\/4829\/revisions"}],"predecessor-version":[{"id":4840,"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/pages\/4829\/revisions\/4840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/media\/3411"}],"wp:attachment":[{"href":"https:\/\/grafhartmetall.com\/en\/wp-json\/wp\/v2\/media?parent=4829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}