{"id":69635,"date":"2026-05-17T17:27:21","date_gmt":"2026-05-17T17:27:21","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/astm-b122\/"},"modified":"2026-05-19T15:30:07","modified_gmt":"2026-05-19T15:30:07","slug":"astm-b122","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/astm-b122\/","title":{"rendered":"ASTM B122"},"content":{"rendered":"

Technical requirements and areas of application for alloys according to the ASTM B122 standard<\/h2>\n

The ASTM B122 standard defines strict technical regulations for the production of flat rolled products (plates, sheets, strips) and rolled bars made of specialized copper alloys. The nomenclature includes copper-nickel, copper-nickel-zinc (nickel silver), and copper-nickel-tin alloys that possess high corrosion resistance and mechanical strength. EV Group China specialists ensure the supply of rolled products that meet these specifications for the needs of critical industrial sectors.<\/p>\n

Chemical composition of alloys (mass fraction in %)<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
UNS Grade<\/th>\nDesignation<\/th>\nCopper<\/th>\nNickel<\/th>\nZinc<\/th>\nTin<\/th>\nChromium<\/th>\n<\/tr>\n<\/thead>\n
C70600<\/td>\n–<\/td>\n90<\/td>\n10<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C70620<\/td>\n–<\/td>\n90<\/td>\n10<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C71000<\/td>\n6<\/td>\n80<\/td>\n20<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C71500<\/td>\n5<\/td>\n70<\/td>\n30<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C71520<\/td>\n–<\/td>\n70<\/td>\n30<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C72200<\/td>\n–<\/td>\n85<\/td>\n15<\/td>\n–<\/td>\n–<\/td>\n0.5<\/td>\n<\/tr>\n
C72500<\/td>\n–<\/td>\n89<\/td>\n9<\/td>\n–<\/td>\n2<\/td>\n–<\/td>\n<\/tr>\n
C73500<\/td>\n1<\/td>\n72<\/td>\n18<\/td>\n10<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C74000<\/td>\n9<\/td>\n70<\/td>\n10<\/td>\n20<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C74500<\/td>\n3<\/td>\n65<\/td>\n10<\/td>\n25<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C75200<\/td>\n2<\/td>\n65<\/td>\n18<\/td>\n17<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C76200<\/td>\n8<\/td>\n59<\/td>\n12<\/td>\n29<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
C77000<\/td>\n4<\/td>\n55<\/td>\n18<\/td>\n27<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note 1:<\/strong> Plates made of C71500, C71520, C72200, C70600, and C70620 grades are optimal for manufacturing tube sheets and heat exchanger equipment components operating in harsh environments, in accordance with ASTM B171 requirements.<\/p>\n

The documentation uses both U.S. customary units and the International System of Units (SI), indicated in square brackets. It is important to note that the values are not directly equivalent; therefore, one system should be adhered to during the design process to avoid deviations from the tolerances established by the standard.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[112],"class_list":["post-69635","wiki","type-wiki","status-publish","hentry","wiki_category-astm"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69635","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\/69635\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69635"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}