{"id":69736,"date":"2026-05-17T17:27:53","date_gmt":"2026-05-17T17:27:53","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/astm-a322-asme-sa322\/"},"modified":"2026-05-19T15:30:50","modified_gmt":"2026-05-19T15:30:50","slug":"astm-a322-asme-sa322","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/astm-a322-asme-sa322\/","title":{"rendered":"ASTM A322 \/ ASME SA322"},"content":{"rendered":"

Technical Specifications and Applications<\/h2>\n

This specification establishes the requirements for the quality and production characteristics of hot-rolled alloy steel bars. The material is intended for high-load components and mechanisms subject to subsequent forging, deep heat treatment, cold drawing, or precision machining.<\/p>\n

Engineers are advised to use the A400 standard as a baseline guide for selecting the optimal alloy steel grades for specific operating conditions.<\/p>\n

Bars are supplied in accordance with the chemical composition and grades presented in the table below. Geometric parameters and cross-sectional tolerances strictly comply with the A29 \/ A29M specification. Products are available in both cut-to-length bars and coils. For inquiries regarding the availability of specific cross-sections in coils corresponding to a particular heat, please contact the technical department of EV Group China.<\/p>\n

If enhanced performance properties are required, such as improved surface quality, tighter chemical composition limits, or specific thermomechanical processing, EV Group China can offer additional quality control options as part of a custom order.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
UNS<\/th>\nSteel Grade<\/th>\n<\/tr>\n<\/thead>\n
G13300<\/td>\n1330<\/td>\n<\/tr>\n
G13350<\/td>\n1335<\/td>\n<\/tr>\n
G13400<\/td>\n1340<\/td>\n<\/tr>\n
G13450<\/td>\n1345<\/td>\n<\/tr>\n
G40120<\/td>\n4012<\/td>\n<\/tr>\n
G40230<\/td>\n4023<\/td>\n<\/tr>\n
G40240<\/td>\n4024<\/td>\n<\/tr>\n
G40270<\/td>\n4027<\/td>\n<\/tr>\n
G40280<\/td>\n4028<\/td>\n<\/tr>\n
G40320<\/td>\n4032<\/td>\n<\/tr>\n
G40370<\/td>\n4037<\/td>\n<\/tr>\n
G40420<\/td>\n4042<\/td>\n<\/tr>\n
G40470<\/td>\n4047<\/td>\n<\/tr>\n
G41180<\/td>\n4118<\/td>\n<\/tr>\n
G41200<\/td>\n4120<\/td>\n<\/tr>\n
G41210<\/td>\n4121<\/td>\n<\/tr>\n
G41300<\/td>\n4130<\/td>\n<\/tr>\n
G41350<\/td>\n4135<\/td>\n<\/tr>\n
G41370<\/td>\n4137<\/td>\n<\/tr>\n
G41400<\/td>\n4140<\/td>\n<\/tr>\n
G41420<\/td>\n4142<\/td>\n<\/tr>\n
G41450<\/td>\n4145<\/td>\n<\/tr>\n
G41470<\/td>\n4147<\/td>\n<\/tr>\n
G41500<\/td>\n4150<\/td>\n<\/tr>\n
G41610<\/td>\n4161<\/td>\n<\/tr>\n
G43200<\/td>\n4320<\/td>\n<\/tr>\n
G43400<\/td>\n4340<\/td>\n<\/tr>\n
G43406<\/td>\nE4340<\/td>\n<\/tr>\n
G44190<\/td>\n4419<\/td>\n<\/tr>\n
G44220<\/td>\n4422<\/td>\n<\/tr>\n
G44270<\/td>\n4427<\/td>\n<\/tr>\n
G46150<\/td>\n4615<\/td>\n<\/tr>\n
G46170<\/td>\n4617<\/td>\n<\/tr>\n
G46200<\/td>\n4620<\/td>\n<\/tr>\n
G46210<\/td>\n4621<\/td>\n<\/tr>\n
G46260<\/td>\n4626<\/td>\n<\/tr>\n
G47150<\/td>\n4715<\/td>\n<\/tr>\n
G47180<\/td>\n4718<\/td>\n<\/tr>\n
G47200<\/td>\n4720<\/td>\n<\/tr>\n
G48150<\/td>\n4815<\/td>\n<\/tr>\n
G48170<\/td>\n4817<\/td>\n<\/tr>\n
G48200<\/td>\n4820<\/td>\n<\/tr>\n
G50150<\/td>\n5015<\/td>\n<\/tr>\n
G50460<\/td>\n5046<\/td>\n<\/tr>\n
G51150<\/td>\n5115<\/td>\n<\/tr>\n
G51170<\/td>\n5117<\/td>\n<\/tr>\n
G51200<\/td>\n5120<\/td>\n<\/tr>\n
G51300<\/td>\n5130<\/td>\n<\/tr>\n
G51320<\/td>\n5132<\/td>\n<\/tr>\n
G51350<\/td>\n5135<\/td>\n<\/tr>\n
G51400<\/td>\n5140<\/td>\n<\/tr>\n
G51450<\/td>\n5145<\/td>\n<\/tr>\n
G51470<\/td>\n5147<\/td>\n<\/tr>\n
G51500<\/td>\n5150<\/td>\n<\/tr>\n
G51550<\/td>\n5155<\/td>\n<\/tr>\n
G51600<\/td>\n5160<\/td>\n<\/tr>\n
G50986<\/td>\nE50100<\/td>\n<\/tr>\n
G51986<\/td>\nE51100<\/td>\n<\/tr>\n
G52986<\/td>\nE52100<\/td>\n<\/tr>\n
G52985<\/td>\n52100<\/td>\n<\/tr>\n
G61180<\/td>\n6118<\/td>\n<\/tr>\n
G61500<\/td>\n6150<\/td>\n<\/tr>\n
G81150<\/td>\n8115<\/td>\n<\/tr>\n
G86150<\/td>\n8615<\/td>\n<\/tr>\n
G86170<\/td>\n8617<\/td>\n<\/tr>\n
G86200<\/td>\n8620<\/td>\n<\/tr>\n
G86220<\/td>\n8622<\/td>\n<\/tr>\n
G86250<\/td>\n8625<\/td>\n<\/tr>\n
G86270<\/td>\n8627<\/td>\n<\/tr>\n
G86300<\/td>\n8630<\/td>\n<\/tr>\n
G86370<\/td>\n8637<\/td>\n<\/tr>\n
G86400<\/td>\n8640<\/td>\n<\/tr>\n
G86420<\/td>\n8642<\/td>\n<\/tr>\n
G86450<\/td>\n8645<\/td>\n<\/tr>\n
G86500<\/td>\n8650<\/td>\n<\/tr>\n
G86550<\/td>\n8655<\/td>\n<\/tr>\n
G86600<\/td>\n8660<\/td>\n<\/tr>\n
G87200<\/td>\n8720<\/td>\n<\/tr>\n
G87400<\/td>\n8740<\/td>\n<\/tr>\n
G88220<\/td>\n8822<\/td>\n<\/tr>\n
G92540<\/td>\n9254<\/td>\n<\/tr>\n
G92550<\/td>\n9255<\/td>\n<\/tr>\n
G92590<\/td>\n9259<\/td>\n<\/tr>\n
G92600<\/td>\n9260<\/td>\n<\/tr>\n
G93100<\/td>\n9310<\/td>\n<\/tr>\n
Standard Boron Steels<\/strong><\/td>\n<\/tr>\n
G50441<\/td>\n50B44<\/td>\n<\/tr>\n
G50461<\/td>\n50B46<\/td>\n<\/tr>\n
G50501<\/td>\n50B50<\/td>\n<\/tr>\n
G50601<\/td>\n50B60<\/td>\n<\/tr>\n
G51601<\/td>\n51B60<\/td>\n<\/tr>\n
G81451<\/td>\n81B45<\/td>\n<\/tr>\n
G94171<\/td>\n94B17<\/td>\n<\/tr>\n
G94301<\/td>\n94B30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[112],"class_list":["post-69736","wiki","type-wiki","status-publish","hentry","wiki_category-astm"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69736","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\/69736\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69736"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}