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Korea KS AC4A 铝合金铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AC4A / AC4A
Category Grade Standard Region/Area Standard Content
Metals AC4A KS D 6008 Korea 铝合金铸件

Chemical composition(mass fraction)(wt.%) of the AC4A

Element Min Max Similar
Zn - 1.0000 -
Ti - 0.2000 -
Sn - 0.1000 -
Si 7.0000 10.0000 -
Pb - 0.2000 -
Ni - 0.3500 -
Mn - 0.5000 -
Mg - 0.5000 -
Fe - 1.0000 -
Cu 2.0000 4.0000 -
Cr - 0.2000 -
Al - - -

Mechanical Properties of steel grade AC4A

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 (≥) 626 (≥) 42 21 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade AC4A

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 - -     0.32 -  
163 775 - 31.3 421   -  
194 - 22 33.2   322 424

Heat Treatment of steel grade AC4A

Heat treated : 1919°C - 1231°C

Technological Curves of steel grade AC4A

Cross Reference Table (Equivalent Grade) of AC4A

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