{"id":982,"date":"2026-04-12T23:09:03","date_gmt":"2026-04-13T03:09:03","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=982"},"modified":"2026-04-12T23:19:50","modified_gmt":"2026-04-13T03:19:50","slug":"steel-flange-materials-guide-carbon-stainless-and-alloy-selection","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/zh\/2026\/04\/12\/steel-flange-materials-guide-carbon-stainless-and-alloy-selection\/","title":{"rendered":"\u94a2\u5236\u6cd5\u5170\u6750\u6599\u6307\u5357 \u78b3\u4e0d\u9508\u94a2\u548c\u5408\u91d1\u7684\u9009\u62e9"},"content":{"rendered":"<h2>Choosing the Right Flange Material<\/h2>\n<p>Material selection is critical. Wrong choice leads to premature failure, corrosion, and safety incidents.<\/p>\n<h2>Carbon Steel Flanges<\/h2>\n<h3>ASTM A105<\/h3>\n<p>Industry workhorse for general service.<\/p>\n<ul>\n<li>Applications: Oil\/gas pipelines, petrochemical, power generation<\/li>\n<li>Temperature: -20F to 800F<\/li>\n<li>Tensile: 70,000 psi min<\/li>\n<\/ul>\n<h3>ASTM A350 LF2<\/h3>\n<p>Low-temperature with Charpy testing.<\/p>\n<ul>\n<li>Applications: LNG, cryogenic, cold climate<\/li>\n<li>Temperature: -50F to 800F<\/li>\n<\/ul>\n<h2>Stainless Steel Flanges<\/h2>\n<h3>304\/304L (F304\/F304L)<\/h3>\n<ul>\n<li>Applications: Food\/beverage, pharmaceutical, chemical<\/li>\n<li>Excellent general corrosion resistance<\/li>\n<\/ul>\n<h3>316\/316L (F316\/F316L)<\/h3>\n<ul>\n<li>Applications: Offshore, seawater, marine<\/li>\n<li>Superior chloride resistance (2-3% Moly)<\/li>\n<\/ul>\n<h2>Alloy Steel Flanges<\/h2>\n<h3>Chrome-Moly (F11, F22, F91)<\/h3>\n<ul>\n<li>F11: Up to 1000F, steam lines<\/li>\n<li>F22: Up to 1100F, high-pressure steam<\/li>\n<li>F91: Up to 1200F, ultra-supercritical plants<\/li>\n<\/ul>\n<h2>Specialty Materials<\/h2>\n<ul>\n<li><strong>Duplex (2205, 2507):<\/strong> Offshore seawater, desalination<\/li>\n<li><strong>Nickel Alloys:<\/strong> Inconel, Hastelloy for extreme corrosion<\/li>\n<\/ul>\n<h2>Selection Factors<\/h2>\n<ol>\n<li>Process fluid corrosivity<\/li>\n<li>Operating temperature\/pressure<\/li>\n<li>Environment (coastal, industrial)<\/li>\n<li>Design life and total cost<\/li>\n<\/ol>\n<h2>Songhai Capabilities<\/h2>\n<ul>\n<li>Carbon: A105, A350 LF2, A694<\/li>\n<li>Stainless: 304\/304L, 316\/316L, 321, 347<\/li>\n<li>Duplex: 2205, 2507<\/li>\n<li>Alloy: F11, F22, F91<\/li>\n<li>Nickel: Inconel 625, Hastelloy C276<\/li>\n<\/ul>\n<p>All materials with MTRs and PED\/NACE certification available.<\/p>\n<p><strong>WhatsApp\uff1a<\/strong>\u00a0+86-18658777855<br \/>\n<strong>\u7535\u5b50\u90ae\u4ef6\uff1a<\/strong>\u00a01007788887@qq.com<br \/>\n<a href=\"https:\/\/www.720yun.com\/vr\/a6ajt7ynrw0\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-884\" src=\"http:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4.webp\" alt=\"\" width=\"1290\" height=\"2317\" srcset=\"https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4.webp 1290w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-167x300.webp 167w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-570x1024.webp 570w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-768x1379.webp 768w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-855x1536.webp 855w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-1140x2048.webp 1140w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-7x12.webp 7w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-416x747.webp 416w\" sizes=\"auto, (max-width: 1290px) 100vw, 1290px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u9009\u62e9\u6b63\u786e\u7684\u6cd5\u5170\u6750\u6599 \u6750\u6599\u9009\u62e9\u81f3\u5173\u91cd\u8981\u3002\u9519\u8bef\u7684\u9009\u62e9\u4f1a\u5bfc\u81f4\u8fc7\u65e9\u5931\u6548\u3001\u8150\u8680\u548c\u5b89\u5168\u4e8b\u6545\u3002\u78b3\u94a2\u6cd5\u5170 ASTM A105 \u9002\u7528\u4e8e\u4e00\u822c\u670d\u52a1\u7684\u5de5\u4e1a\u4e3b\u529b\u4ea7\u54c1\u3002\u5e94\u7528\uff1a\u77f3\u6cb9\/\u5929\u7136\u6c14\u7ba1\u9053\u3001\u77f3\u5316\u3001\u53d1\u7535 \u6e29\u5ea6\uff1a-20F \u81f3 800F \u62c9\u4f38\u6027\u80fd\uff1a70,000 psi min ASTM A350 LF2 \u4f4e\u6e29\u590f\u6bd4\u8bd5\u9a8c\u3002\u5e94\u7528\uff1a\u6db2\u5316\u5929\u7136\u6c14\u3001\u4f4e\u6e29\u3001\u5bd2\u51b7\u6c14\u5019 [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-982","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts\/982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/comments?post=982"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts\/982\/revisions"}],"predecessor-version":[{"id":986,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/posts\/982\/revisions\/986"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/media?parent=982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/categories?post=982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/zh\/wp-json\/wp\/v2\/tags?post=982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}