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China GB Mg8RE7 球墨铸铁用球化剂 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Mg8RE7 / Mg8RE7
Category Grade Standard Region/Area Standard Content
Metals Mg8RE7 GB/T 28702 China 球墨铸铁用球化剂

Chemical composition(mass fraction)(wt.%) of the Mg8RE7

Element Min Max Similar
Ti - 0.5000 -
Si - 48.0000 -
Re 6.5000 7.5000 -
Mg 7.5000 8.5000 -
Al - 1.0000 -

Mechanical Properties of steel grade Mg8RE7

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)
769 (≥) 699 (≥) 44 42 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade Mg8RE7

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
33 - -     0.34 -  
621 533 - 44.3 321   -  
246 - 13 33.2   341 231

Heat Treatment of steel grade Mg8RE7

Heat treated : 1831°C - 1386°C

Technological Curves of steel grade Mg8RE7

Cross Reference Table (Equivalent Grade) of Mg8RE7

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