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CHEMISTRY CONSTITUTE TABLE OF MAIN PRODUCT STEEL GRADE
Steel GradeÂ
Chemistry Constitute
C
Si
Mn
Cr
Ni
Mo
P
S
Ti
Cu
Q195
0.06~0.12
≤0.30
0.25~0.50
≤0.3
≤0.3
-
≤0.045
≤0.050
-
≤0.30
Q235
0.14~0.22
≤0.30
0.30~0.65
≤0.3
≤0.3
-
≤0.045
≤0.050
-
≤0.30
Q345B
≤0.20
≤0.55
1.00~1.60
-
-
-
≤0.040
≤0.040
-
-
10#
0.07~0.13
0.07~0.37
0.35~0.65
≤0.15
≤0.3
-
≤0.035
≤0.035
-
≤0.25
20#
0.17~0.23
0.07~0.37
0.35~0.65
≤0.25
≤0.3
-
≤0.035
≤0.035
-
≤0.25
35#
0.32~0.39
0.07~0.37
0.50~0.80
≤0.25
≤0.3
-
≤0.035
≤0.035
-
≤0.25
45#
0.42~0.50
0.07~0.37
0.50~0.80
≤0.25
≤0.3
-
≤0.035
≤0.035
-
≤0.25
20Cr
0.18~0.24
0.07~0.37
0.50~0.80
0.70~1.00
≤0.3
-
≤0.035
≤0.035
-
≤0.30
40Cr
0.37~0.44
0.07~0.37
0.50~0.80
0.80~1.10
≤0.3
-
≤0.035
≤0.035
-
≤0.30
20CrMo
0.17~0.24
0.07~0.37
0.40~0.70
0.80~1.10
≤0.3
0.15~0.25
≤0.035
≤0.035
-
≤0.30
30CrMo
0.26~0.34
0.07~0.37
0.40~0.70
0.80~1.10
≤0.3
0.15~0.25
≤0.035
≤0.035
-
≤0.30
35CrMo
0.32~0.40
0.07~0.37
0.40~0.70
0.80~1.10
≤0.3
0.15~0.25
≤0.035
≤0.035
-
≤0.30
42CrMo
0.38~0.45
0.07~0.37
0.50~0.80
0.90~1.20
1.00~1.40
0.15~0.25
≤0.035
≤0.035
-
≤0.30
20CrMoTi
0.17~0.23
0.07~0.37
0.40~0.70
0.45~0.75
≤0.3
-
≤0.035
≤0.035
-
≤0.30
35Mn2
0.32~0.39
0.07~0.37
1.40~1.80
≤0.3
≤0.3
-
≤0.035
≤0.035
-
≤0.30
40Mn2
0.37~0.44
0.07~0.37
1.40~1.80
≤0.3
≤0.3
-
≤0.035
≤0.035
-
≤0.30
35SiMn
0.32~0.40
1.10~1.40
1.10~1.40
≤0.3
≤0.3
-
≤0.035
≤0.035
-
≤0.30
15Mn
0.12~0.16
0.07~0.37
0.70~1.00
≤0.25
≤0.3
-
≤0.035
≤0.035
-
≤0.25
20Mn
0.17~0.23
0.07~0.37
0.70~1.00
≤0.25
≤0.3
-
≤0.035
≤0.035
-
≤0.25
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