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China GB 4J29 精密合金牌号 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4J29 / 4J29
Category Grade Standard Region/Area Standard Content
Metals 4J29 GB/T 15018 China 精密合金牌号

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

Element Min Max Similar
Fe - - -
Mo - 0.2000 -
Cu - 0.2000 -
Co 16.8000 17.8000 -
Cr - 0.2000 -
Ni 28.5000 29.5000 -
Si - 0.3000 -
Mn - 0.5000 -
P - 0.0200 -
S - 0.0200 -
C - 0.0300 -

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)
764 (≥) 897 (≥) 21 34 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

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
24 - -     0.22 -  
811 635 - 23.3 133   -  
229 - 41 24.2   212 231

Heat Treatment of steel grade 4J29

Heat treated : 1141°C - 1115°C

Technological Curves of steel grade 4J29

Cross Reference Table (Equivalent Grade) of 4J29

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