{"id":7045,"date":"2026-06-27T04:31:14","date_gmt":"2026-06-27T04:31:14","guid":{"rendered":"https:\/\/www.spreadon.net\/industrial1\/?page_id=7045"},"modified":"2026-06-27T04:31:14","modified_gmt":"2026-06-27T04:31:14","slug":"about-hafnium-and-hafnium-alloy","status":"publish","type":"page","link":"https:\/\/www.spreadon.net\/industrial1\/about-hafnium-and-hafnium-alloy\/","title":{"rendered":"About Hafnium and Hafnium Alloy"},"content":{"rendered":"<style>\n.so-wrap{max-width:1180px;margin:0 auto;padding:36px 20px 60px;display:flex;gap:28px;align-items:flex-start;font-family:'Segoe UI',Arial,sans-serif;}\n.so-sidebar{width:240px;flex-shrink:0;}\n.so-sidebar-title{background:#034170;color:#fff;font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;padding:13px 16px;border-left:4px solid #c04023;}\n.so-acc{list-style:none;border:1px solid #cdd5e0;border-top:none;margin:0;padding:0;}\n.so-acc>li>.so-acc-btn{display:flex;align-items:center;justify-content:space-between;width:100%;background:#034170;color:#fff;font-size:13px;font-weight:600;padding:14px;height:48px;box-sizing:border-box;cursor:pointer;border:none;border-top:1px solid #0a5490;text-align:left;transition:background 0.2s;}\n.so-acc>li>.so-acc-btn:hover,.so-acc>li>.so-acc-btn.soopen{background:#c04023;}\n.so-acc>li>.so-acc-btn .soarrow{font-size:10px;transition:transform 0.3s;margin-left:auto;}\n.so-acc>li>.so-acc-btn.soopen .soarrow{transform:rotate(180deg);}\n.so-sub1{list-style:none;display:none;background:#fff;margin:0;padding:0;}\n.so-sub1.soopen{display:block;}\n.so-sub1>li>a.so-leaf{display:flex;align-items:center;padding:0 14px 0 24px;height:38px;box-sizing:border-box;font-size:12.5px;color:#034170;text-decoration:none;border-bottom:1px solid #eef1f6;transition:background 0.15s,color 0.15s,padding-left 0.15s;}\n.so-sub1>li>a.so-leaf:hover,.so-sub1>li>a.so-leaf.so-active{background:#fdf0ed;color:#c04023;padding-left:30px;}\n.so-acc-btn2{display:flex;align-items:center;justify-content:space-between;width:100%;background:#eef1f6;color:#034170;font-size:12.5px;font-weight:600;padding:0 14px 0 20px;height:40px;box-sizing:border-box;cursor:pointer;border:none;border-bottom:1px solid #dce3ee;text-align:left;transition:background 0.15s;}\n.so-acc-btn2:hover,.so-acc-btn2.soopen{background:#fce8e3;color:#c04023;}\n.so-acc-btn2 .soarrow2{font-size:9px;transition:transform 0.3s;margin-left:auto;}\n.so-acc-btn2.soopen .soarrow2{transform:rotate(180deg);}\n.so-sub2{list-style:none;display:none;background:#fff;margin:0;padding:0;}\n.so-sub2.soopen{display:block;}\n.so-sub2>li>a{display:flex;align-items:center;padding:0 14px 0 36px;height:36px;box-sizing:border-box;font-size:12px;color:#444;text-decoration:none;border-bottom:1px solid #f5f5f5;transition:background 0.15s,color 0.15s;}\n.so-sub2>li>a:hover{background:#fdf0ed;color:#c04023;}\n.so-content{flex:1;min-width:0;}\n.so-content-header{border-bottom:2px solid #c04023;padding-bottom:10px;margin-bottom:22px;}\n.so-content-header h2{font-size:20px;font-weight:700;color:#034170;margin:0;}\n.so-body{font-size:14px;color:#333;line-height:1.8;}\n.so-body p{margin:0 0 14px;}\n.so-body strong{color:#034170;}\n@media(max-width:768px){.so-wrap{flex-direction:column;}.so-sidebar{width:100%;}}\n<\/style>\n<div class=\"so-wrap\">\n<aside class=\"so-sidebar\">\n<div class=\"so-sidebar-title\">Product Categories<\/div>\n<ul class=\"so-acc\" id=\"soAccHf1\">\n<li>\n        <button class=\"so-acc-btn\">Pure Titanium &amp; Alloys <span class=\"soarrow\">&#9660;<\/span><\/button><\/p>\n<ul class=\"so-sub1\">\n<li><a href=\"\/industrial1\/about-titanium\/\" class=\"so-leaf\">About Titanium<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-tube-and-pipe\/\" class=\"so-leaf\">Titanium Tube and Pipe<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-strip-sheet-and-plate\/\" class=\"so-leaf\">Titanium Strip, Sheet &amp; Plate<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-bar-and-rod\/\" class=\"so-leaf\">Titanium Bar and Rod<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-welded-wire-and-wire\/\" class=\"so-leaf\">Titanium Welded Wire and Wire<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-foil\/\" class=\"so-leaf\">Titanium Foil<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-forging\/\" class=\"so-leaf\">Titanium Forging<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-flange\/\" class=\"so-leaf\">Titanium Flange<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-pipe-fittings\/\" class=\"so-leaf\">Titanium Pipe Fittings<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-casting\/\" class=\"so-leaf\">Titanium Casting<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-fastener\/\" class=\"so-leaf\">Titanium Fastener<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-elliptical-spherical-head\/\" class=\"so-leaf\">Titanium Elliptical \/ Spherical Head<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-machining-parts\/\" class=\"so-leaf\">Titanium Machining Parts<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-clad-plate\/\" class=\"so-leaf\">Titanium Clad Plate<\/a><\/li>\n<li><a href=\"\/industrial1\/titanium-clad-copper-bar\/\" class=\"so-leaf\">Titanium Clad Copper Bar<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n        <button class=\"so-acc-btn soopen\">Other Metals <span class=\"soarrow\">&#9660;<\/span><\/button><\/p>\n<ul class=\"so-sub1 soopen\">\n<li><button class=\"so-acc-btn2\">Copper Alloys <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-copper-and-copper-alloys\/\">About Copper and Copper Alloys<\/a><\/li>\n<li><a href=\"\/industrial1\/copper-alloys-tubes-and-pipes\/\">Copper Alloys Tubes and Pipes<\/a><\/li>\n<\/ul>\n<\/li>\n<li><button class=\"so-acc-btn2\">Nickel Alloys <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-nickel-and-nickel-alloys\/\">About Nickel and Nickel Alloys<\/a><\/li>\n<li><a href=\"\/industrial1\/nickel-alloys-tubes-and-pipes\/\">Nickel Alloys Tubes and Pipes<\/a><\/li>\n<\/ul>\n<\/li>\n<li><button class=\"so-acc-btn2\">Stainless Steels <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-stainless-steels\/\">About Stainless Steels<\/a><\/li>\n<li><a href=\"\/industrial1\/stainless-steels-tubes-and-pipes\/\">Stainless Steels Tubes and Pipes<\/a><\/li>\n<\/ul>\n<\/li>\n<li><button class=\"so-acc-btn2\">Carbon Steels <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-carbon-steels\/\">About Carbon Steels<\/a><\/li>\n<li><a href=\"\/industrial1\/carbon-steels-tubes-and-pipes\/\">Carbon Steels Tubes and Pipes<\/a><\/li>\n<\/ul>\n<\/li>\n<li><button class=\"so-acc-btn2\">Zirconium <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-zirconium-alloys\/\">About Zirconium Alloys<\/a><\/li>\n<li><a href=\"\/industrial1\/zirconium-alloy-tubes-and-pipes\/\">Zirconium Alloy Tubes and Pipes<\/a><\/li>\n<li><a href=\"\/industrial1\/zirconium-alloy-plate-and-sheet\/\">Zirconium Alloy Plate and Sheet<\/a><\/li>\n<\/ul>\n<\/li>\n<li><button class=\"so-acc-btn2\">Niobium <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-niobium-alloys\/\">About Niobium Alloys<\/a><\/li>\n<li><a href=\"\/industrial1\/niobium-alloy-tubes-and-pipes\/\">Niobium Alloy Tubes and Pipes<\/a><\/li>\n<li><a href=\"\/industrial1\/niobium-alloy-plate-and-sheet\/\">Niobium Alloy Plate and Sheet<\/a><\/li>\n<\/ul>\n<\/li>\n<li><button class=\"so-acc-btn2\">Tantalum <span class=\"soarrow2\">&#9660;<\/span><\/button>\n<ul class=\"so-sub2\">\n<li><a href=\"\/industrial1\/about-tantalum-alloys\/\">About Tantalum Alloys<\/a><\/li>\n<li><a href=\"\/industrial1\/tantalum-alloy-tubes-and-pipes\/\">Tantalum Alloy Tubes and Pipes<\/a><\/li>\n<li><a href=\"\/industrial1\/tantalum-alloy-plate-and-sheet\/\">Tantalum Alloy Plate and Sheet<\/a><\/li>\n<li><a href=\"\/industrial1\/tantalum-alloy-rod-and-bar\/\">Tantalum Alloy Rod and Bar<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n            <button class=\"so-acc-btn2 soopen\">Hafnium <span class=\"soarrow2\">&#9660;<\/span><\/button><\/p>\n<ul class=\"so-sub2 soopen\">\n<li><a href=\"\/industrial1\/about-hafnium-and-hafnium-alloy\/\" style=\"background:#fdf0ed;color:#c04023;font-weight:600;\">About Hafnium and Hafnium Alloy<\/a><\/li>\n<li><a href=\"\/industrial1\/hafnium-alloy-tubes-and-pipes\/\">Hafnium Alloy Tubes and Pipes<\/a><\/li>\n<li><a href=\"\/industrial1\/hafnium-alloy-plate-and-sheet\/\">Hafnium Alloy Plate and Sheet<\/a><\/li>\n<\/ul>\n<\/li>\n<li><a href=\"\/industrial1\/magnesium\/\" class=\"so-leaf\" style=\"display:flex;align-items:center;padding:0 14px 0 24px;height:38px;font-size:12.5px;color:#034170;text-decoration:none;border-bottom:1px solid #eef1f6;\">Magnesium<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/aside>\n<p>  <main class=\"so-content\"><\/p>\n<div class=\"so-content-header\">\n<h2>About Hafnium and Hafnium Alloy<\/h2>\n<\/div>\n<div class=\"so-body\">\n<p><strong>What is Hafnium and Hafnium Alloys?<\/strong><\/p>\n<p>Hafnium is a lustrous silver-gray transition metal with a density of 13.31 g\/cm\u00b3 (at 20\u00b0C), a melting point of 2233\u00b0C, and a boiling point of 4603\u00b0C. The dense metal is chemically inactive and reacts with air to form a stable oxide coating at room temperature, while powdered hafnium is prone to spontaneous combustion in air. Hafnium does not react with dilute hydrochloric acid, dilute sulfuric acid, or strong alkali solutions, but is soluble in hydrofluoric acid and aqua regia.<\/p>\n<p>Hafnium is very rare in the earth&#8217;s crust and commonly coexists with zirconium. It has high temperature resistance, corrosion resistance, oxidation resistance, easy processing characteristics, and fast heat absorption and release properties. These qualities make it suitable for use as an atomic material, alloy material, high-temperature resistant material, and electronic material.<\/p>\n<p>Hafnium is used in alloys with iron, titanium, niobium, tantalum, and other metals. One well-known alloy used for liquid rocket thruster nozzles \u2014 including the main engine of the Apollo Lunar Modules \u2014 is C103, which consists of 89% niobium, 10% hafnium, and 1% titanium. Small additions of hafnium increase the adherence of protective oxide scales on nickel-based alloys, improving corrosion resistance especially under cyclic temperature conditions that tend to break oxide scales by inducing thermal stresses between the bulk material and the oxide layer.<\/p>\n<\/p><\/div>\n<p>  <\/main>\n<\/div>\n<p><script>\njQuery(document).ready(function($){\n  $('#soAccHf1').on('click','>li>.so-acc-btn',function(){\n    var $b=$(this),$s=$b.next('.so-sub1'),isOpen=$b.hasClass('soopen');\n    $('#soAccHf1 >li>.so-acc-btn').removeClass('soopen');\n    $('#soAccHf1 >li>.so-sub1').removeClass('soopen');\n    if(!isOpen){$b.addClass('soopen');$s.addClass('soopen');}\n  });\n  $(document).on('click','.so-acc-btn2',function(){\n    $(this).toggleClass('soopen').next('.so-sub2').toggleClass('soopen');\n  });\n});\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Product Categories Pure Titanium &amp; Alloys &#9660; About Titanium Titanium Tube and Pipe Titanium Strip, Sheet &amp; Plate Titanium Bar and Rod Titanium Welded Wire and Wire Titanium Foil Titanium Forging Titanium Flange Titanium Pipe Fittings Titanium Casting Titanium Fastener Titanium Elliptical \/ Spherical Head Titanium Machining Parts Titanium Clad Plate Titanium Clad Copper Bar<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7045","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/pages\/7045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/comments?post=7045"}],"version-history":[{"count":1,"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/pages\/7045\/revisions"}],"predecessor-version":[{"id":7046,"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/pages\/7045\/revisions\/7046"}],"wp:attachment":[{"href":"https:\/\/www.spreadon.net\/industrial1\/wp-json\/wp\/v2\/media?parent=7045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}