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Japan JIS SNB24-4 特殊应用螺栓合金钢棒材料 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SNB24-4 / SNB 24-4
Category Grade Standard Region/Area Standard Content
Metals SNB 24-4 JIS G4108 Japan 特殊应用螺栓合金钢棒材料

Chemical composition(mass fraction)(wt.%) of the SNB 24-4

Element Min Max Similar
Si 0.2000 0.3500 -
S - 0.0250 -
P - 0.0250 -
Ni 1.6500 2.0000 -
Mo 0.3000 0.4000 -
Mn 0.7000 0.9000 -
Cr 0.7000 0.9500 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade SNB 24-4

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)
942 (≥) 991 (≥) 13 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade SNB 24-4

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
44 - -     0.21 -  
787 631 - 43.3 242   -  
461 - 43 44.2   311 124

Heat Treatment of steel grade SNB 24-4

Heat treated : 1113°C - 1897°C

Technological Curves of steel grade SNB 24-4

Cross Reference Table (Equivalent Grade) of SNB 24-4

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