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　Pig Iron 　Steel Billet 　Bar
　Wire Rod 　DIP 　Urea
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　Water dregs and Coking
　　by-product		 　Pipe Fittings 　Wooden & plastic
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Hot rolling steel for coal machine GB/T3424-94
Sign
Chemical Composition %
C
Si
Mn
P less than
S less than
M510
0.20-0.27
0.20-0.60
1.20-1.60
0.045
0.045
M540
0.20-0.29
0.17-0.37
1.30-1.80
0.045
0.045
M565
0.25-0.33
0.17-0.37
1.30-1.80
0.045
0.045

Structural steel for ship body GB712-88
Steel Kinds
Level
Chemical Composition %
C
Mn
Si
P
S
ALs
Nb
V
general strength steel
A
 ≤0.22
 ≥2.5C
 0.10-0.35 ≤0.040 ≤0.040      
general strength steel
B
 ≤0.21
 0.60-1.00 0.10-0.35 ≤0.040 ≤0.040      
general strength steel
D
 ≤0.21
 0.60-1.10
 0.10-0.35 ≤0.040 ≤0.040      
general strength steel
E
 ≤0.18
 0.70-1.20
 0.10-0.35 ≤0.040 ≤0.040 ≥0.015
    
high strength steel
AH32
 ≤0.18
 0.70-1.60
 0.10-0.50 ≤0.040 ≤0.040 ≥0.015
    
high strength steel
DH32
 ≤0.18
 0.90-1.60
 0.10-0.50 ≤0.040 ≤0.040 ≥0.015
    
high strength steel
EH32
 ≤0.18
 0.90-1.60
 0.10-0.50 ≤0.040 ≤0.040 ≥0.015
    
high strength steel
AH36
 ≤0.18
 0.70-1.60 0.10-0.50 ≤0.040 ≤0.040 ≥0.015
 0.015-0.050
 0.30-0.10
high strength steel
DH36
 ≤0.18
 0.90-1.60
 0.10-0.50 ≤0.040 ≤0.040 ≥0.015
 0.015-0.050
 0.30-0.10
high strength steel
EH36
 ≤0.18
 0.90-1.60
 0.10-0.50 ≤0.040 ≤0.040 ≥0.015
 0.015-0.050
 0.30-0.10

Alloy structural steel GB/T 3077－88
sign
Chemical Composition %
C
Si
Mn
P
S
Cr
Ni
Cu
20Mn2
0.17-0.24
0.17-0.37
1.40-1.80
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
30Mn2
0.27-0.34
0.17-0.37
1.40-1.80
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
35Mn2
0.32-0.39
0.17-0.37
1.40-1.80
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
40Mn2
0.37-0.44
0.17-0.37
1.40-1.80
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
45Mn2
0.42-0.49
0.17-0.37
1.40-1.80
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
50Mn2
0.47-0.55
0.17-0.37
1.40-1.80
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
V 0.07-0.12
20MnV
0.17-0.24
0.17-0.37
1.30-1.60
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
27SiMn
0.24-0.32
1.10-1.40
1.10-1.40
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
35SiMn
0.32-0.40
1.10-1.40
1.10-1.40
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
42SiMn
0.39-0.45
1.10-1.40
1.10-1.40
≤0.035
≤0.035
≤0.30
≤0.30
≤0.30
15Cr
0.12-0.18
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.70-1.00
≤0.30
≤0.30
15CrA
0.12-0.17
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.70-1.00
≤0.30
≤0.30
20Cr
0.18-0.24
0.17-0.57
0.50-0.80
≤0.035
≤0.035
0.70-1.00
≤0.30
≤0.30
30Cr
0.27-0.34
0.50-0.80
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
35Cr
0.32-0.39
0.17-0.57
0.50-0.80
≤0.035
≤0.035
0.40-0.70
≤0.30
≤0.30
12CrMo
0.08-0.15
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
Mo 0.40-0.55
15CrMo
0.12-0.18
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
Mo 0.40-0.55
20CrMo
0.17-0.24
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
Mo 0.15-0.25
30CrMo
0.24-0.34
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
Mo 0.15-0.25
30CrMoA
0.26-0.33
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
Mo 0.15-0.25
35CrMo
0.32-0.40
0.17-0.57
0.40-0.70
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
Mo 0.15-0.25
15CrMn
0.12-0.18
0.17-0.57
1.10-1.40
≤0.035
≤0.035
0.40-0.70
≤0.30
≤0.30
20CrMn
0.17-0.23
0.17-0.57
0.90-1.20
≤0.035
≤0.035
0.90-1.20
≤0.30
≤0.30
40CrMn
0.37-0.45
0.17-0.57
0.90-1.20
≤0.035
≤0.035
0.90-1.20
≤0.30
≤0.30
20CrMnSi
0.17-0.23
0.90-1.20
0.80-1.10
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
30CrMnSi
0.27-0.34
0.90-1.20
0.80-1.10
≤0.035
≤0.035
0.80-1.10
≤0.30
≤0.30
20CrMnMo
0.17-0.23
0.17-0.37
0.80-1.10
≤0.035
≤0.035
1.10-1.40
≤0.30
≤0.30
Mo 0.20-0.30
40CrMnMo
0.32-0.45
0.17-0.37
0.80-1.20
≤0.035
≤0.035
0.90-1.20
≤0.30
≤0.30
Mo 0.20-0.30
20CrMnTi
0.17-0.23
0.17-0.37
0.80-1.20
≤0.035
≤0.035
1.00-1.30
≤0.30
≤0.30
Ti 0.04-0.10
30CrMnTi
0.24-0.32
0.17-0.37
0.80-1.10
≤0.035
≤0.035
1.00-1.30
≤0.30
≤0.30
Ti 0.04-0.10

Steel wire steel for welding use GB/T 1300
sign
Chemical Composition %
C
Si
Mn
P
S
H08A
≤0.10
≤0.03
0.30- 0.55
≤0.030
≤0.030
H08E
≤0.10
≤0.03
0.30- 0.55
≤0.020
≤0.020
H08C
≤0.10
≤0.03
0.30- 0.55
≤0.015
≤0.015
H08MnA
≤0.10
≤0.07
0.80- 1.10
≤0.030
≤0.030
H15A
0.11- 0.18
≤0.03
0.35- 0.65
≤0.030
≤0.030
H15Mn
0.11- 0.18
≤0.03
0.80- 1.10
≤0.035
≤0.035
H10Mn2
≤0.12
≤0.07
1.50- 1.90
≤0.035
≤0.035
H08Mn2Si
≤0.11
0.65- 0.95
1.70- 2.10
≤0.035
≤0.035
H08Mn2SiA
≤0.11
0.65- 0.95
1.80- 2.10
≤0.030
≤0.030
H10MnSi
≤0.14
0.60- 0.90
0.80- 1.10
≤0.035
≤0.035
H10MnSiMo
≤0.14
0.70- 1.10
0.90- 1.20
≤0.035
≤0.035
H10MnSiMoTiA
0.08～ 0.12
0.40～ 0.70
1.00～ 1.30
≤0.030
≤0.025
H08MnMoA
≤ 0.10
≤0.25
1.20～ 1.60
≤0.030
≤0.030
H08Mn2MoA
0.06～ 0.11
≤0.25
1.60～ 1.90
≤0.030
≤0.030
H10Mn2MoA
0.08～ 0.13
≤0.40
1.70～ 2.00
≤0.030
≤0.030
H08Mn2MoVA
0.06～ 0.11
≤ 0.25
1.60～ 1.90
≤0.030
≤0.030
H10Mn2MoVA
0.08～ 0.13
≤0.40
1.70～ 2.00
≤0.030
≤0.030
H08CrMoA
≤ 0.10
0.15- 0.35
0.40- 0.70
≤0.030
≤0.030
H13CrMoA
0.11- 0.16
0.15- 0.35
0.40- 0.70
≤0.030
≤0.030
H18CrMoA
0.15- 0.22
0.15- 0.35
0.40- 0.70
≤0.030
≤0.025
H08CrMoVA
≤0.10
0.15- 0.35
0.40- 0.70
≤0.030
≤0.030
H08CrNi2MoA
0.05～ 0.10
0.10～ 0.30
0.50～ 0.85
0.030
0.025
H30CrMnSiA
0.25～ 0.35
0.90～ 1.20
0.80～ 1.10
≤0.025
≤0.025
H10MoCrA
≤0.12
0.15～ 0.35
0.40～ 0.70
≤0.030
≤0.030
sign
Chemical Composition %
Cr
Ni
其它
Mo
V
Cu
H08A
≤0.020
≤0.30
      
≤0.20
H08E
≤0.020
≤0.30
      
≤0.20
H08C
≤0.020
≤0.30
      
≤0.20
H08MnA
≤0.020
≤0.30
      
≤0.20
H15A
≤0.020
≤0.30
      
≤0.20
H15Mn
≤0.020
≤0.30
      
≤0.20
H10Mn2
≤0.020
≤0.30
      
≤0.20
H08Mn2Si
≤0.020
≤0.30
      
≤0.20
H08Mn2SiA
≤0.020
≤0.30
      
≤0.20
H10MnSi
≤0.020
≤0.30
      
≤0.20
H10MnSiMo
≤0.020
≤0.30
      
≤0.20
H10MnSiMoTiA
≤0.020
≤0.30
 Ti0.05 ～0.15
    
≤0.20
H08MnMoA
≤0.020
≤0.30
 Ti0.15 (加入量)
0.30～0.50
  
≤0.20
H08Mn2MoA
≤0.020
≤0.30
 Ti0.15 (加入量)
0.50～0.70
  
≤0.20
H10Mn2MoA
≤0.020
≤0.30
 Ti0.15 (加入量)
0.60～0.80
  
≤0.20
H08Mn2MoVA
≤ 0.20
≤0.30
 Ti0.15 (加入量)
0.50～0.70
 0.06～0.12
≤0.20
H10Mn2MoVA
≤ 0.20
≤0.30
 Ti0.15 (加入量)
0.60～0.80
 0.06～0.12
≤0.20
H08CrMoA
0.80-1.10
≤0.30
  
0.40～0.60
  
≤0.20
H13CrMoA
0.80-1.10
≤0.30
  
0.40～0.60
  
≤0.20
H18CrMoA
0.80-1.10
≤0.30
  
0.15～0.25
  
≤0.20
H08CrMoVA
1.00-1.30
≤0.30
  
0.50～0.70
 0.15～0.35
≤0.20
H08CrNi2MoA
0.70～1.00
1.40 ～1.80
  
0.20～0.40
  
≤0.20
H30CrMnSiA
0.80～1.10
≤0.30
  
 
≤0.20
H10MoCrA
0.45～0.65
≤0.30
  
0.40～0.60
  
≤0.20

Spring steel GB/T 1222
sign
Chemical Composition %
C
Si
Mn
P
S
Cr
Ni
Cu
65Mn
0.62-0.70
0.17-0.37
0.90-1.20
≤0.035
≤0.035
≤0.25
≤0.25
≤0.25
55Si2Mn
0.52-0.60
1.50-2.00
0.60-0.90
≤0.035
≤0.035
≤0.035
≤0.035
≤0.25
60Si2Mn
0.56-0.64
≤0.035
≤0.035
≤0.035
≤0.035
≤0.25
65Si2Mn
0.56-0.64
≤0.030
≤0.030
≤0.035
≤0.035
≤0.25

Steel for mine use GB/T 3414
sign
Chemical Composition %
C
Si
Mn
P
S
V
24Mn2K
0.20-0.27
0.17-0.37
1.30-1.80
≤0.045
≤0.045
0.07-0.20
20MnVK
0.17-0.20
0.17-0.37
1.20-1.60
≤0.040
≤0.040
0.07-0.20
25MnK
0.21-0.31
0.20-0.60
1.20-1.60
≤0.040
≤0.050
0.07-0.20
34SiMnK
0.30-0.38
0.90-1.30
1.00-1.40
≤0.040
≤0.040
0.07-0.20

Cold upsetting steel GB/T 6478
sign
Chemical Composition %
C
Si
Mn
P
S
Cr
ML08
0.05-0.12
≤0.03
0.20-0.50
≤0.035
≤0.035
ML10
0.07-0.14
≤0.03
0.20-0.50
≤0.035
≤0.035
ML15
0.12-018
≤0.07
0.20-0.50
≤0.035
≤0.035
ML20
0.17-0.24
≤0.07
0.20-0.50
≤0.035
≤0.035
ML25
0.22-0.30
≤0.20
0.30-0.60
≤0.035
≤0.035
ML30
0.27-0.35
≤0.20
0.30-0.60
≤0.035
≤0.035
ML35
0.32-0.40
≤0.20
0.30-0.60
≤0.035
≤0.035
ML40
0.37-0.45
≤0.20
0.30-0.60
≤0.035
≤0.035
ML45
0.42-0.50
≤0.20
0.30-0.60
≤0.035
≤0.035
ML25Mn
0.22-0.30
≤0.25
0.50-0.80
≤0.035
≤0.035
ML30Mn
0.27-0.35
≤0.25
0.50-0.80
≤0.035
≤0.035
ML35Mn
0.32-0.40
≤0.25
0.50-0.80
≤0.035
≤0.035
ML40Mn
0.37-0.45
≤0.25
0.50-0.80
≤0.035
≤0.035
ML45Mn
0.42-0.50
≤0.25
0.50-0.80
≤0.035
≤0.035
ML15Cr
0.12-018
≤0.30
0.40-0.70
≤0.035
≤0.035
0.70-1.00
ML20Cr
0.17-0.24
≤0.30
0.50-0.80
≤0.035
≤0.035
0.70-1.00

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