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China HB 4J45 膨胀合金热处理工艺说明书 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4J45 / 4J45
Category Grade Standard Region/Area Standard Content
Metals 4J45 HB/Z 239 China 膨胀合金热处理工艺说明书

Chemical composition(mass fraction)(wt.%) of the 4J45

Element Min Max Similar

Mechanical Properties of steel grade 4J45

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)
937 (≥) 819 (≥) 33 13 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade 4J45

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 - -     0.44 -  
675 243 - 14.3 332   -  
634 - 41 14.2   422 134

Heat Treatment of steel grade 4J45

Heat treated : 1242°C - 1634°C

Technological Curves of steel grade 4J45

Cross Reference Table (Equivalent Grade) of 4J45

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