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Standards |
Grade |
C |
Si |
Mn |
Cr |
Mo |
Ni |
V |
W |
Al |
Co |
Ti |
Cu |
GB/T 3077-1999 |
20Mn2 |
0.17
-0.24 |
0.17
-0.37 |
1.40
-1.80 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
30Mn2 |
0.27
-0.34 |
0.17
-0.37 |
1.40
-1.80 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
35Mn2 |
0.32
-0.39 |
0.17
-0.37 |
1.40
-1.80 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
40Mn2 |
0.37
-0.44 |
0.17
-0.37 |
1.40
-1.80 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
45Mn2 |
0.42
-0.49 |
0.17
-0.37 |
1.40
-1.80 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
50Mn2 |
0.47
-0.55 |
0.17
-0.37 |
1.40
-1.80 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
20MnV |
0.17
-0.24 |
0.17
-0.37 |
1.30
-1.60 |
- |
- |
- |
0.07
-0.12 |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
27SiMn |
0.24
-0.32 |
1.10
-1.40 |
1.10
-1.40 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
35SiMn |
0.32
-0.40 |
1.10
-1.40 |
1.10
-1.40 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
42SiMn |
0.39
-0.45 |
1.10
-1.40 |
1.10
-1.40 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
20SiMn2MoV |
0.17
-0.23 |
0.90
-1.20 |
2.20
-2.60 |
- |
0.30
-0.40 |
- |
0.05
-0.05 |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
25SiMn2MoV |
0.22
-0.28 |
0.90
-1.20 |
2.20
-2.60 |
- |
0.30
-0.40 |
- |
0.05
-0.05 |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
37SiMn2MoV |
0.33
-0.39 |
0.60
-0.90 |
1.60
-1.90 |
- |
0.40
-0.50 |
- |
0.05
-0.05 |
- |
- |
- |
- |
- |
GB/T 3077-1999 |
40B |
0.37
-0.44 |
0.17
-0.37 |
0.60
-0.90 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T3077-1999 |
45B |
0.42
-0.49 |
0.17
-0.37 |
0.60
-0.90 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T3077-1999 |
50B |
0.47
-0.55 |
0.17
-0.37 |
0.60
-0.90 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T3077-1999 |
40MnB |
0.37
-0.44 |
0.17
-0.37 |
1.10
-1.40 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T3077-1999 |
45MnB |
0.42
-0.49 |
0.17
-0.37 |
1.10
-1.40 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
GB/T3077-1999 |
20MnMoB |
0.16
-0.22 |
0.17
-0.37 |
0.90
-1.20 |
- |
0.20
-0.30 |
- |
- |
- |
- |
- |
- |
- |
GB/T3077-1999 |
15MnVB |
0.12
-0.18 |
0.17
-0.37 |
1.20
-1.60 |
- |
- |
- |
0.07
-0.12 |
- |
- |
- |
- |
- |
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