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Global 企业标准 204A and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 204A / 204A
Category Grade Standard Region/Area Standard Content
Metals 204A -- Global

Chemical composition(mass fraction)(wt.%) of the 204A

Element Min Max Similar
Si - 0.5000 -
S - 0.0240 -
Ni 63.0000 70.0000 -
Mn - 2.0000 -
Fe - 2.5000 -
Cu - - -
C - 0.3000 -

Mechanical Properties of steel grade 204A

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)
157 (≥) 526 (≥) 21 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade 204A

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
32 - -     0.12 -  
378 353 - 23.3 421   -  
429 - 43 14.2   322 224

Heat Treatment of steel grade 204A

Heat treated : 1554°C - 1465°C

Technological Curves of steel grade 204A

Cross Reference Table (Equivalent Grade) of 204A

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