{"id":1260,"date":"2026-01-26T16:53:01","date_gmt":"2026-01-26T08:53:01","guid":{"rendered":"https:\/\/www.sapphire-glass.net\/?post_type=product&p=1260"},"modified":"2026-01-26T16:53:58","modified_gmt":"2026-01-26T08:53:58","slug":"high-purity-unpolished-sapphire-rod-for-optical-semiconductor-industrial-use","status":"publish","type":"product","link":"https:\/\/www.sapphire-glass.net\/th\/product\/high-purity-unpolished-sapphire-rod-for-optical-semiconductor-industrial-use\/","title":{"rendered":"High-Purity Unpolished Sapphire Rod for Optical, Semiconductor & Industrial Use"},"content":{"rendered":"

These unpolished single crystal sapphire rods are made from 99.999% high-purity Al\u2082O\u2083<\/strong>, offering excellent mechanical strength, thermal stability, and chemical resistance. Produced using Kyropoulos (KY) or Pulling-Down (PD) methods<\/strong>, these rods maintain high dimensional precision and structural integrity even under extreme conditions.<\/p>\n

The fine-ground (as-grown) surface ensures minimal processing while providing strong support for semiconductor wafers, optical components, laser systems, and high-temperature experiments. Their broad UV\u2013IR transparency, high hardness, and resistance to wear and corrosion make them ideal for advanced research, industrial, and electronic applications.<\/p>\n

Available in custom diameters, lengths, and crystal orientations to meet specialized engineering and scientific needs.<\/p>\n

\"sapphire-rob6-300x300 \"sapphire-rob8-300x300 \"sapphire-rob7-300x300<\/p>\n

Key Features<\/strong><\/h1>\n
    \n
  • \n

    High-purity monocrystalline Al\u2082O\u2083 (99.999%)<\/p>\n<\/li>\n

  • \n

    Mohs hardness 9 \u2014 extremely wear-resistant<\/p>\n<\/li>\n

  • \n

    Thermal stability up to 2000\u00b0C<\/strong><\/p>\n<\/li>\n

  • \n

    Fine-ground \/ unpolished surface for cost-effective applications<\/p>\n<\/li>\n

  • \n

    Chemical and plasma resistant<\/p>\n<\/li>\n

  • \n

    Broad optical transmission (0.17\u20135.5 \u03bcm, UV\u2013IR)<\/p>\n<\/li>\n

  • \n

    Dimensional precision for industrial and optical components<\/p>\n<\/li>\n<\/ul>\n

    Technical Specifications<\/strong><\/h1>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Item<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
    Material<\/td>\n99.999% High-Purity Monocrystalline Al\u2082O\u2083<\/td>\n<\/tr>\n
    Crystal Orientation<\/td>\nC-plane (0001), A-plane (11-20), M-plane (10-10), R-plane (1-102), N-plane (11-23), V-plane (22-43)<\/td>\n<\/tr>\n
    \u0e40\u0e2a\u0e49\u0e19\u0e1c\u0e48\u0e32\u0e19\u0e28\u0e39\u0e19\u0e22\u0e4c\u0e01\u0e25\u0e32\u0e07<\/td>\n0.3 mm \u2013 8 inch (custom)<\/td>\n<\/tr>\n
    Length<\/td>\nUp to 600 mm<\/td>\n<\/tr>\n
    Density<\/td>\n3.97\u20134.1 g\/cm\u00b3<\/td>\n<\/tr>\n
    Melting Point<\/td>\n2000\u20132050\u00b0C<\/td>\n<\/tr>\n
    Surface Finish<\/td>\nFine-ground (unpolished \/ as-grown)<\/td>\n<\/tr>\n
    Coefficient of Thermal Expansion<\/td>\n5.0\u20138.4 \u00d7 10\u207b\u2076 \/K<\/td>\n<\/tr>\n
    Optical Transmission Range<\/td>\n0.17\u20135.5 \u03bcm<\/td>\n<\/tr>\n
    Refractive Index (0.532 \u03bcm)<\/td>\nn\u2080 = 1.7717, n\u2091 = 1.76355<\/td>\n<\/tr>\n
    Crystal Structure<\/td>\nHexagonal (Rhombohedral)<\/td>\n<\/tr>\n
    Hardness<\/td>\nMohs 9<\/td>\n<\/tr>\n
    Young\u2019s Modulus<\/td>\n345 GPa<\/td>\n<\/tr>\n
    Shear Modulus<\/td>\n145 GPa<\/td>\n<\/tr>\n
    Bulk Modulus<\/td>\n240 GPa<\/td>\n<\/tr>\n
    Water Absorption<\/td>\nNil<\/td>\n<\/tr>\n
    Packaging<\/td>\nSingle-piece protective packaging<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Applications<\/strong><\/h1>\n

    Semiconductor & Electronics<\/strong><\/h3>\n
      \n
    • \n

      Wafer support rods and guides<\/p>\n<\/li>\n

    • \n

      High-temperature furnace rods<\/p>\n<\/li>\n

    • \n

      LED \/ MOCVD substrate support<\/p>\n<\/li>\n

    • \n

      Plasma chamber components<\/p>\n<\/li>\n<\/ul>\n

      Optical & Photonics<\/strong><\/h3>\n
        \n
      • \n

        Laser support rods<\/p>\n<\/li>\n

      • \n

        UV\u2013IR optical windows and rods<\/p>\n<\/li>\n

      • \n

        Optical alignment components<\/p>\n<\/li>\n<\/ul>\n

        Industrial & Mechanical<\/strong><\/h3>\n
          \n
        • \n

          Wear-resistant plungers and rods<\/p>\n<\/li>\n

        • \n

          Bearings and precision mechanical components<\/p>\n<\/li>\n

        • \n

          High-load insulating rods<\/p>\n<\/li>\n<\/ul>\n

          Scientific & Medical<\/strong><\/h3>\n
            \n
          • \n

            High-temperature experimental supports<\/p>\n<\/li>\n

          • \n

            Vacuum chamber guides<\/p>\n<\/li>\n

          • \n

            Endoscope and medical instrument components<\/p>\n<\/li>\n<\/ul>\n

            Custom Options<\/strong><\/h1>\n
              \n
            • \n

              \u0e40\u0e2a\u0e49\u0e19\u0e1c\u0e48\u0e32\u0e19\u0e28\u0e39\u0e19\u0e22\u0e4c\u0e01\u0e25\u0e32\u0e07: 0.3 mm \u2013 8\u201d<\/strong><\/p>\n<\/li>\n

            • \n

              Length: 5 mm \u2013 600 mm<\/strong><\/p>\n<\/li>\n

            • \n

              Crystal orientation: C\/A\/M\/R\/N\/V<\/strong><\/p>\n<\/li>\n

            • \n

              End shapes: flat, rounded, tapered, saddle pin<\/strong><\/p>\n<\/li>\n

            • \n

              Surface: fine-ground \/ as-grown<\/strong><\/p>\n<\/li>\n

            • \n

              OEM and technical support for research or industrial integration<\/p>\n<\/li>\n<\/ul>\n

              \u0e04\u0e33\u0e16\u0e32\u0e21\u0e17\u0e35\u0e48\u0e1e\u0e1a\u0e1a\u0e48\u0e2d\u0e22<\/strong><\/h1>\n

              1. Are unpolished sapphire rods suitable for high-precision applications?<\/strong>
              Yes. While unpolished, the fine-ground surface ensures dimensional accuracy and structural stability for wafers, optics, and high-temperature experiments.<\/p>\n

              2. Can these rods withstand high temperatures?<\/strong>
              Absolutely. Sapphire rods resist temperatures up to 2000\u00b0C<\/strong>, maintaining mechanical integrity and low thermal expansion.<\/p>\n

              3. Can the rods be customized?<\/strong>
              Yes. We offer a wide range of diameters, lengths, crystal orientations, and special end shapes to meet industrial, optical, and research requirements.<\/p>","protected":false},"excerpt":{"rendered":"

              These unpolished single crystal sapphire rods are made from 99.999% high-purity Al\u2082O\u2083<\/strong>, offering excellent mechanical strength, thermal stability, and chemical resistance. Produced using Kyropoulos (KY) or Pulling-Down (PD) methods<\/strong>, these rods maintain high dimensional precision and structural integrity even under extreme conditions.<\/p>","protected":false},"featured_media":1304,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[38,33],"product_tag":[44,45,46,47],"class_list":["post-1260","product","type-product","status-publish","has-post-thumbnail","product_cat-sapphire-rod","product_cat-sapphirealo","product_tag-fine-ground-sapphire","product_tag-optical-components","product_tag-single-crystal-al2o3","product_tag-unpolished-sapphire-rods","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/product\/1260","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/comments?post=1260"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/media\/1304"}],"wp:attachment":[{"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/media?parent=1260"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/product_brand?post=1260"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/product_cat?post=1260"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/th\/wp-json\/wp\/v2\/product_tag?post=1260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}