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Japan JIS SNB23-4 特殊应用螺栓合金钢棒材料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNB23-4 / SNB 23-4
Category Grade Standard Region/Area Standard Content
Metals SNB 23-4 JIS G4108 Japan 特殊应用螺栓合金钢棒材料

Chemical composition(mass fraction)(wt.%) of the SNB 23-4

Element Min Max Similar
Si 0.2000 0.3500 -
S - 0.0250 -
P - 0.0250 -
Ni 1.5500 2.0000 -
Mo 0.2000 0.3000 -
Mn 0.6000 0.9500 -
Cr 0.6500 0.9500 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade SNB 23-4

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)
483 (≥) 768 (≥) 34 21 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade SNB 23-4

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 - -     0.12 -  
726 895 - 33.3 223   -  
971 - 13 21.2   342 441

Heat Treatment of steel grade SNB 23-4

Heat treated : 1694°C - 1967°C

Technological Curves of steel grade SNB 23-4

Cross Reference Table (Equivalent Grade) of SNB 23-4

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