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A732 Grade 4A

America ASTM A732Grade4A 铸件,熔模,碳和低合金通用装置和在高温下的高强度低合金钴合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A732Grade4A / A732 Grade 4A
Category Grade Standard Region/Area Standard Content
Metals A732 Grade 4A ASTM A732/A732M America 铸件,熔模,碳和低合金通用装置和在高温下的高强度低合金钴合金钢

Chemical composition(mass fraction)(wt.%) of the A732 Grade 4A

Element Min Max Similar
W - 0.1000 -
Si 0.2000 1.0000 -
S - 0.0450 -
P - 0.0400 -
Other - - -
Ni - - -
Mo+W - - -
Mn 0.7000 1.0000 -
Cu - 0.5000 -
Cr - - -
C 0.4500 0.5500 -

Mechanical Properties of steel grade A732 Grade 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)
285 (≥) 589 (≥) 13 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade A732 Grade 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
34 - -     0.43 -  
119 934 - 14.3 243   -  
346 - 32 43.2   334 441

Heat Treatment of steel grade A732 Grade 4A

Heat treated : 1168°C - 1728°C

Technological Curves of steel grade A732 Grade 4A

Cross Reference Table (Equivalent Grade) of A732 Grade 4A

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