{"id":1470,"date":"2026-04-10T02:06:48","date_gmt":"2026-04-10T09:06:48","guid":{"rendered":"https:\/\/www.songhaiflanges.com\/?p=1470"},"modified":"2026-04-10T02:23:23","modified_gmt":"2026-04-10T09:23:23","slug":"stainless-steel-flange-material-selection-304-316-321-347-904l-2205-compared","status":"publish","type":"post","link":"https:\/\/www.songhaiflanges.com\/th\/stainless-steel-flange-material-selection-304-316-321-347-904l-2205-compared\/","title":{"rendered":"Stainless Steel Flange Material Selection: 304, 316, 321, 347, 904L, 2205 Compared"},"content":{"rendered":"

Stainless Steel Flange Material Selection Guide<\/h2>\n

Published:<\/strong> April 10, 2026 | Category:<\/strong> Materials<\/p>\n

Quick Selection Matrix<\/h3>\n\n\n\n\n\n\n\n\n\n
Grade<\/th>\nBest For<\/th>\nMax Temp<\/th>\nCost<\/th>\n<\/tr>\n
304\/L<\/td>\nGeneral purpose<\/td>\n870\u00b0C<\/td>\n$<\/td>\n<\/tr>\n
316\/L<\/td>\nMarine, chemical<\/td>\n870\u00b0C<\/td>\n$$<\/td>\n<\/tr>\n
321<\/td>\nHigh temperature<\/td>\n925\u00b0C<\/td>\n$$<\/td>\n<\/tr>\n
347<\/td>\nExtreme heat<\/td>\n925\u00b0C<\/td>\n$$$<\/td>\n<\/tr>\n
904L<\/td>\nSulfuric acid<\/td>\n400\u00b0C<\/td>\n$$$$<\/td>\n<\/tr>\n
2205<\/td>\nOffshore<\/td>\n300\u00b0C<\/td>\n$$$<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Grade 304\/L (A2 Stainless)<\/h3>\n

18% Cr, 8% Ni. Most widely used. Applications: food processing, pharmaceutical, architectural.<\/p>\n

Grade 316\/L (A4 Stainless)<\/h3>\n

16% Cr, 10% Ni, 2% Mo. Superior chloride resistance. Applications: offshore, marine, chemical.<\/p>\n

Grade 321 (Titanium Stabilized)<\/h3>\n

Excellent for 400-900\u00b0C. Applications: aircraft exhaust, boilers, heat exchangers.<\/p>\n

Grade 347 (Niobium Stabilized)<\/h3>\n

Superior creep strength. Applications: jet engines, power plants, nuclear.<\/p>\n

Grade 904L (Super Austenitic)<\/h3>\n

20% Cr, 25% Ni, 4.5% Mo. Exceptional acid resistance. Applications: sulfuric acid, seawater.<\/p>\n

Grade 2205 (Duplex)<\/h3>\n

22% Cr, 5% Ni, 3% Mo. 2x yield strength. Applications: offshore, desalination.<\/p>\n

Need help selecting? Songhai provides free material consultation!<\/strong>
\nWhatsApp:<\/strong>\u00a0+86-18658777855<\/p>\n

Email:<\/strong>\u00a01007788887@qq.com
\n\"\"<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Stainless Steel Flange Material Selection Guide Published: April 10, 2026 | Category: Materials Quick Selection Matrix Grade Best For Max Temp Cost 304\/L…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[1],"tags":[100,98,99,101,102,97],"class_list":["post-1470","post","type-post","status-publish","format-standard","hentry","category-3-news","tag-100","tag-98","tag-99","tag-904l","tag-material-selection","tag-stainless-steel"],"_links":{"self":[{"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/posts\/1470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/comments?post=1470"}],"version-history":[{"count":4,"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/posts\/1470\/revisions"}],"predecessor-version":[{"id":1492,"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/posts\/1470\/revisions\/1492"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/media?parent=1470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/categories?post=1470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflanges.com\/th\/wp-json\/wp\/v2\/tags?post=1470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}