{"id":69933,"date":"2026-05-17T17:28:56","date_gmt":"2026-05-17T17:28:56","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/astm-b444-asme-sb444\/"},"modified":"2026-05-19T15:32:19","modified_gmt":"2026-05-19T15:32:19","slug":"astm-b444-asme-sb444","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/astm-b444-asme-sb444\/","title":{"rendered":"ASTM B444 \/ ASME SB444"},"content":{"rendered":"<h2>Technical regulation and scope of pipes according to ASTM B444 \/ ASME SB 444<\/h2>\n<p>This standard establishes strict requirements for seamless pipes and tubes made of nickel-chromium-molybdenum-columbium alloys (UNS N06625) and nickel-chromium-molybdenum-silicon alloys (UNS N06219). Products supplied by EV Group China strictly comply with the B829 specifications, which regulate the general requirements for nickel alloys.<\/p>\n<p>For UNS N06625 material, a classification into two operational grades is provided, determined by the heat treatment regime:<\/p>\n<ul>\n<li><strong>Grade 1 (annealed):<\/strong> Material annealed at temperatures up to 1100 \u00b0F (593 \u00b0C). Optimal for standard operating conditions.<\/li>\n<li><strong>Grade 2 (solution annealed):<\/strong> Specialized heat treatment for products operating in environments with temperatures above 1100 \u00b0F (593 \u00b0C). Provides enhanced creep resistance and structural thermal stability.<\/li>\n<\/ul>\n<p><em>Important note: the thermal history of the product and subsequent operating temperature regimes can significantly affect the microstructure and final mechanical properties of the alloy.<\/em><\/p>\n<p>Alloys of the UNS N06219 type are supplied exclusively in the solution-annealed condition, which ensures structural uniformity and corrosion resistance in aggressive environments.<\/p>\n<p><em>Specialized recommendation: these materials require strict adherence to safety protocols during testing as described in section 9 of the specification, as well as during welding and installation works.<\/em><\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[112],"class_list":["post-69933","wiki","type-wiki","status-publish","hentry","wiki_category-astm"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69933","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\/69933\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69933"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}