Please check the comparsion table of  high-quality carbon structural steel as follows: 钢号 中国 前苏联 美国 英国 日本 法国 德国   GB ГОСТ ASTM BS JIS NF DIN                   08F 08КП 1006 040A04 S09CK   C10 优 08 08 1008 045M10 S9CK   C10   10F   1010 040A10   XC10     10 10 1010,1012 045M10 S10C XC10 C10,CK10 质 15 15 1015 095M15 S15C XC12 C15,CK15   20 20 1020 050A20 S20C XC18 C22,CK22   25 25 1025   S25C   CK25 碳 30 30 1030 060A30 S30C XC32     35 35 1035 060A35 S35C XC38TS C35,CK35   40 40 1040 080A40 S40C XC38H1   素 45 45 1045 080M46 S45C XC45 C45,CK45   50 50 1050 060A52 S50C XC48TS CK53 结 55 55 1055 070M55 S55C XC55     60 60 1060 080A62 S58C XC55 C60,CK60   15Mn 15Г 1016,1115 080A17 SB46 XC12 14Mn4 构 20Mn 20Г 1021,1022 080A20   XC18     30Mn 30Г 1030,1033 080A32 S30C XC32     40Mn 40Г 1036,1040 080A40 S40C 40M5 40Mn4 钢 45Mn 45Г 1043,1045 080A47 S45C       50Mn 50Г 1050,1052 030A52 S53C XC48           080M50     Baoding Guokun Machinery can supply the casted, forged and machined components in most carbon steel. Any RFQ of OEM carbon steel casting, forging parts, please contact us via gina@guokuncasting.com