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China GB MQTMn8 中锰抗磨球墨铸铁件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: MQTMn8 / MQTMn8
Category Grade Standard Region/Area Standard Content
Metals MQTMn8 GB 3180 China 中锰抗磨球墨铸铁件

Chemical composition(mass fraction)(wt.%) of the MQTMn8

Element Min Max Similar
Mn 7.5000 9.0000 -

Mechanical Properties of steel grade MQTMn8

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)
726 (≥) 972 (≥) 32 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade MQTMn8

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 - -     0.33 -  
422 738 - 23.3 344   -  
566 - 22 11.2   131 331

Heat Treatment of steel grade MQTMn8

Heat treated : 1863°C - 1313°C

Technological Curves of steel grade MQTMn8

Cross Reference Table (Equivalent Grade) of MQTMn8

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