优质碳素结构钢国内外牌号对照
中国GB美国ASTM日本JIS德国DIN EN英国BS EN法国NF ENISO韩国KS印度IS40Mn1039SWRCH40KC40(1.0511)—40MnA40MnE45Mn1046SWRCH45KC45(1.0503)SH,SM45MnA45MnE50Mn1053SWRCH50KC50(1.0540)Type SCType DC50MnA50MnE60Mn1060SWRH62BC60(1.0601)Type SCType DC60MnA60MnE65Mn1566SWRH67B—Type SCType DC65MnA65MnE70Mn1572SWRH72B—DM,DHType SC70MnA70MnEC2D1C2D1C3D1C3D1C3D21005——C3D2C4D1C4D1C4D——C4D(1.0300)C4D
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