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China GB YM204 镁合金压铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: YM204 / YM204
Category Grade Standard Region/Area Standard Content
Metals YM204 GB/T 25747 China 镁合金压铸件

Chemical composition(mass fraction)(wt.%) of the YM204

Element Min Max Similar
Zn - 0.2000 -
Si - 0.2000 -
Ni - 0.0100 -
Mn 0.1500 0.5000 -
Mg - - -
Cu - 0.2500 -
Al 5.6000 6.4000 -
Zn - 0.2200 -
Si - 0.5000 -
Ni - 0.0300 -
Mn 0.1300 0.6000 -
Mg - - -
Cu - 0.3500 -
Al 5.5000 6.5000 -

Mechanical Properties of steel grade YM204

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)
268 (≥) 449 (≥) 32 42 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade YM204

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 - -     0.41 -  
759 339 - 21.3 143   -  
978 - 32 23.2   214 314

Heat Treatment of steel grade YM204

Heat treated : 1467°C - 1635°C

Technological Curves of steel grade YM204

Cross Reference Table (Equivalent Grade) of YM204

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