B7 B7 Datasheet
Category Type Steel Grade Standard Country Application
Steel GradesCarbon Steel B7
B2
100CrMnSi4-4
B3
100CrMnSi6-4
B4
100CrMnSi6-6
B5
100CrMo7
B6
100CrMo7-3
Datasheet for:Steel Grades:Carbon Steel:B7

Chemical composition(mass fraction)(wt.%) of the B7

 

C
Si
Mn
P
S
Cr Ni
0.93-1.05  0.15-0.35  0.6-0.8  0.025  0.015 1.65-1.95  
Mo Al Cu Nb Ti V Ce
0.4-0.5 ≤ 0.05 ≤0.3     +    
N O2 Pb B Other    
  ≤0.015           
             

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade B7

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
913 (≥) 586 (≥) 33 44 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
12 - -     0.41 -  
822 492 - 33.3 432   -  
973 - 23 14.2   422 414
Heat treated : 1672°C - 1715°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
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