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China GB Mg4RE2 球墨铸铁用球化剂 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Mg4RE2 / Mg4RE2
Category Grade Standard Region/Area Standard Content
Metals Mg4RE2 GB/T 28702 China 球墨铸铁用球化剂

Chemical composition(mass fraction)(wt.%) of the Mg4RE2

Element Min Max Similar
Ti - 0.5000 -
Si - 48.0000 -
RE - 1.5000 -
Mg 4.5000 5.5000 -
Al - 1.0000 -

Mechanical Properties of steel grade Mg4RE2

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)
452 (≥) 248 (≥) 31 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade Mg4RE2

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
31 - -     0.41 -  
643 269 - 42.3 434   -  
644 - 32 34.2   113 144

Heat Treatment of steel grade Mg4RE2

Heat treated : 1631°C - 1191°C

Technological Curves of steel grade Mg4RE2

Cross Reference Table (Equivalent Grade) of Mg4RE2

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