{"id":69896,"date":"2026-05-17T17:28:45","date_gmt":"2026-05-17T17:28:45","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/astm-b21\/"},"modified":"2026-05-19T15:32:03","modified_gmt":"2026-05-19T15:32:03","slug":"astm-b21","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/astm-b21\/","title":{"rendered":"ASTM B21"},"content":{"rendered":"<h2>Technical regulation for the application of alloys according to the ASTM B21 standard<\/h2>\n<p>This regulatory document defines strict technical requirements for the production and quality characteristics of rods and shaped rolled products made of naval (shipbuilding) brass. The standard covers a wide range of chemical compositions, including grades UNS C46200, C46400, C46750, C47940, C48200, C48500, and C48640. Products supplied by EV Group China fully comply with these physical and mechanical parameters, ensuring high corrosion resistance in aggressive marine environments.<\/p>\n<p>Important note for engineering calculations: this standard does not apply to specialized products, such as shafts and precision piston groups \u2014 separate industry specifications are provided for them. It should also be noted that blanks intended for subsequent hot forging must be certified according to the requirements of the ASTM B124 specification.<\/p>\n<p>EV Group China guarantees that the supplied rolled products comply with the stated grades, which is confirmed by a full package of accompanying documentation and the results of laboratory tests for each batch.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[112],"class_list":["post-69896","wiki","type-wiki","status-publish","hentry","wiki_category-astm"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69896\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69896"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}