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China GB 3J09 精密合金牌号 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 3J09 / 3J09
Category Grade Standard Region/Area Standard Content
Metals 3J09 GB/T 15018 China 精密合金牌号

Chemical composition(mass fraction)(wt.%) of the 3J09

Element Min Max Similar
Fe - - -
Mo 1.6000 1.8500 -
Cr 19.0000 20.5000 -
Ni 9.0000 10.5000 -
Si 1.3000 1.7000 -
Mn 1.8000 2.2000 -
P - 0.0300 -
S - 0.0200 -
C 0.2200 0.2600 -

Mechanical Properties of steel grade 3J09

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)
982 (≥) 714 (≥) 12 42 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade 3J09

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
31 - -     0.31 -  
235 248 - 42.3 424   -  
385 - 21 23.2   224 344

Heat Treatment of steel grade 3J09

Heat treated : 1973°C - 1769°C

Technological Curves of steel grade 3J09

Cross Reference Table (Equivalent Grade) of 3J09

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