{"id":69572,"date":"2026-05-17T17:27:01","date_gmt":"2026-05-17T17:27:01","guid":{"rendered":"https:\/\/evgroupchina.com\/encyclopedia-of-metal\/jis-g3114\/"},"modified":"2026-05-19T15:29:40","modified_gmt":"2026-05-19T15:29:40","slug":"jis-g3114","status":"publish","type":"wiki","link":"https:\/\/evgroupchina.com\/en\/encyclopedia-of-metal\/jis-g3114\/","title":{"rendered":"JIS G3114"},"content":{"rendered":"

Technical specifications and application of weathering steel according to JIS G3114<\/h2>\n

The JIS G3114 standard regulates the technical delivery conditions for hot-rolled steel products with enhanced atmospheric corrosion resistance. These steel grades are characterized by excellent weldability and are designed for critical load-bearing structures, including bridges, high-rise construction, and infrastructure facilities operating in outdoor environments.<\/p>\n

The term “weathering” refers to the material’s ability to form a dense oxide layer (patina) on its surface, which prevents further corrosion from penetrating the metal structure, thereby significantly extending the service life of structures without the need for additional painting.<\/p>\n

Engineers at EV Group China highlight the chemical composition of the steel grades provided in the table below, which ensures an optimal balance of strength properties and corrosion resistance.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Steel<\/th>\nC<\/th>\nSi<\/th>\nMn<\/th>\nP<\/th>\nS<\/th>\nCu<\/th>\nCr<\/th>\nNi<\/th>\n<\/tr>\n<\/thead>\n
SMA400AW, SMA400BW, SMA400CW<\/td>\n<0.18<\/td>\n0.15-0.65<\/td>\n<1.25<\/td>\n<0.035<\/td>\n<0.035<\/td>\n0.30-0.50<\/td>\n0.45-0.75<\/td>\n0.05-0.30<\/td>\n<\/tr>\n
SMA400AP, SMA400BP, SMA400CP<\/td>\n<0.18<\/td>\n<0.55<\/td>\n<1.25<\/td>\n<0.035<\/td>\n<0.035<\/td>\n0.20-0.35<\/td>\n0.30-0.55<\/td>\n–<\/td>\n<\/tr>\n
SMA490AW, SMA490BW, SMA490CW<\/td>\n<0.18<\/td>\n0.15-0.65<\/td>\n<1.40<\/td>\n<0.035<\/td>\n<0.035<\/td>\n0.30-0.50<\/td>\n0.45-0.75<\/td>\n0.05-0.30<\/td>\n<\/tr>\n
SMA490AP, SMA490BP, SMA490CP<\/td>\n<0.18<\/td>\n<0.55<\/td>\n<1.40<\/td>\n<0.035<\/td>\n<0.035<\/td>\n0.20-0.35<\/td>\n0.30-0.55<\/td>\n–<\/td>\n<\/tr>\n
SMA570W<\/td>\n<0.18<\/td>\n0.15-0.65<\/td>\n<1.40<\/td>\n<0.035<\/td>\n<0.035<\/td>\n0.30-0.50<\/td>\n0.45-0.75<\/td>\n0.05-0.30<\/td>\n<\/tr>\n
SMA570P<\/td>\n<0.18<\/td>\n<0.55<\/td>\n<1.40<\/td>\n<0.035<\/td>\n<0.035<\/td>\n0.20-0.35<\/td>\n0.30-0.55<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":[],"wiki_category":[118],"class_list":["post-69572","wiki","type-wiki","status-publish","hentry","wiki_category-jis"],"_links":{"self":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki\/69572","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\/69572\/revisions"}],"wp:attachment":[{"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/media?parent=69572"}],"wp:term":[{"taxonomy":"wiki_category","embeddable":true,"href":"https:\/\/evgroupchina.com\/en\/wp-json\/wp\/v2\/wiki_category?post=69572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}