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Description

China GBT 42SiMn China structural steel and alloy steel and 42SiMn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 42SiMn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 42SiMn GBT China China structural steel and alloy steel
16MnREL
20Mn2
30Mn2
35Mn2
40Mn2
45Mn2
50Mn2
20MnV
27SiMn
35SiMn

Chemical composition(mass fraction)(wt.%) of the 42SiMn

C(%) Si(%) Mn(%) Mo(%) V(%)
0.39-0.45 1.10-1.40 1.10-1.40 0.30-0.40 0.05-0.12

Mechanical Properties of steel grade 42SiMn

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)
797 (≥) 261 (≥) 24 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade 42SiMn

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
21 - -     0.12 -  
168 372 - 24.3 322   -  
337 - 14 14.2   444 344

Heat Treatment of steel grade 42SiMn

Heat treated : 1166°C - 1842°C

Technological Curves of steel grade 42SiMn

Cross Reference Table (Equivalent Grade) of 42SiMn

Grade Standard Country Application
42SiMn GBT China China structural steel and alloy steel

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