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America ASTM B145-4A 普通用铜合金砂型铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B145-4A / B145-4A
Category Grade Standard Region/Area Standard Content
Metals B145-4A ASTM B584 America 普通用铜合金砂型铸件

Chemical composition(mass fraction)(wt.%) of the B145-4A

Element Min Max Similar
P - 0.0300 -
S - 0.0800 -
Si - 0.0050 -
Ni - 1.0000 -
Cu 82.0000 83.8000 -
Al - 0.0050 -
Zn 5.0000 8.0000 -
Sn 3.3000 4.2000 -
Sb - 0.2500 -
Fe - 0.3000 -
Pb 5.0000 7.0000 -

Mechanical Properties of steel grade B145-4A

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)
621 (≥) 777 (≥) 33 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade B145-4A

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
22 - -     0.41 -  
819 434 - 41.3 421   -  
528 - 31 13.2   421 324

Heat Treatment of steel grade B145-4A

Heat treated : 1973°C - 1628°C

Technological Curves of steel grade B145-4A

Cross Reference Table (Equivalent Grade) of B145-4A

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