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China HB 4J29 膨胀合金热处理工艺说明书 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4J29 / 4J29
Category Grade Standard Region/Area Standard Content
Metals 4J29 HB/Z 239 China 膨胀合金热处理工艺说明书

Chemical composition(mass fraction)(wt.%) of the 4J29

Element Min Max Similar

Mechanical Properties of steel grade 4J29

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)
731 (≥) 794 (≥) 32 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade 4J29

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
41 - -     0.43 -  
144 375 - 24.3 223   -  
913 - 21 44.2   134 211

Heat Treatment of steel grade 4J29

Heat treated : 1156°C - 1966°C

Technological Curves of steel grade 4J29

Cross Reference Table (Equivalent Grade) of 4J29

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