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Steel Group Grade Standard

  China GB ASTM JIS DIN、DINEN ISO 630
1 10 1010 S10C; S12C CK10 C101
2 15 1015 S15C; S17C CK15; Fe360B C15E4
3 20 1020 S20C; S22C C22 --
4 25 1025 S25C; S28C C25 C25E4
5 40 1040 S40C; S43C C40 C40E4
6 45 1045 S45C; S48C C45 C45E4
7 50 1050 S50C S53C C50 C50E4
8 15Mn 1019 -- --  
9 Q195 Cr.B SS330; SPHC; SPHD S185  
10 Q215A Cr.C; Cr.58 SS330; SPHC    
11 Q235A Cr.D SS400; SM400A   E235B
12 Q235B Cr.D SS400; SM400A S235JR; S235JRG1; S235JRG2 E235B
13 Q255A   SS400; SM400A    
14 Q275   SS490   E275A
15 40Mn 1043 SWRH42B C40 SL; SM
16 45Mn 1046 SWRH47B C45 SL; SM
17 65Mn 1065 -- -- SL; SM; TypeSC; TypDC
18 Q420C Gr.B; Type7 SEV295; SEV345 S420NL; S420ML  
19 Q460D Gr.65 SM570; SMA570W; SMA570P S460NL; S460ML E460DD; F460E
20 20Mn2 1524 SMn420 P355GH  
21 15Cr 5115 SCr415 17Cr3 --
22 20Cr 5120 SCr420 20Cr4 20Cr4
23 30Cr 5130 SCr430 34Cr4 34Cr4
24 40Cr 5140 SCr440 41Cr4 41Cr4
25 45Cr 5145 SCr445 41Cr4 41Cr4
26 Crl2 T30403(UNS) (D3) SKD1 X210Cr12  
27 Crl2MolVl T30402(UNS) (D2) SKD11 X155CrVMo121 160CrMoV12
28 5CrNiMo -- -- -- --
29 5CrNiMo T61206(UNS) (L6) SKT4 55NiCrMoV6 --
30 3Cr2W8V T20821 SKD5 -- 30WCrV9
31 1Cr18Ni9Ti S32100(UNS) (321) SUS321 X6CrNiTi18-10  
32 2Cr13 S42000(UNS) (420) SUS420J1 X20Cr13 4
33 30CrMo 4130 SCM430 25CrMo4 25CrMo4
34 35CrMo 4317 SCM435 34CrMo4 34CrMo4
35 42CrMo 4140 SCM440 42CrMo4 42CrMo4
36 38CrMoA1 -- SCM645 41CrA1Mo7 41CrA1Mo7
37 50CrVA 6150 SCP10 51CrV4 51CrV4
38 40CrMnMo 4140; 4142 SCM440 42CrMo4 42CrMo4
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Zhongjing Steel Group (Guangdong) Co.,Ltd. specializes in the production of cold-rolled/hot-rolled coils, carbon steel pipes, bars, and PPGI materials. It is a modern enterprise integrating carbon steel production, processing, and trade. It is a Chinese iron and steel enterprise group.

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