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GS-8 MnMo 7 4

Germany DIN GS-8MnMo74 Steel castings with improved weldability and toughness for general use and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GS-8MnMo74 / GS-8 MnMo 7 4
Category Grade Standard Region/Area Standard Content
Metals GS-8 MnMo 7 4 DIN 17182 Germany Steel castings with improved weldability and toughness for general use

Chemical composition(mass fraction)(wt.%) of the GS-8 MnMo 7 4

Element Min Max Similar
V - 0.1000 -
Si - 0.6000 -
S - 0.0150 -
P - 0.0200 -
Nb - 0.0500 -
N - 0.0200 -
Mo 0.3000 0.4000 -
Mn 1.5000 1.8000 -
Cr - 0.2000 -
C 0.0600 0.1000 -

Mechanical Properties of steel grade GS-8 MnMo 7 4

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)
167 (≥) 859 (≥) 23 44 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade GS-8 MnMo 7 4

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
22 - -     0.21 -  
321 487 - 13.3 113   -  
722 - 12 41.2   313 424

Heat Treatment of steel grade GS-8 MnMo 7 4

Heat treated : 1832°C - 1598°C

Technological Curves of steel grade GS-8 MnMo 7 4

Cross Reference Table (Equivalent Grade) of GS-8 MnMo 7 4

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