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China NB S31703 承压设备用不锈钢和耐热钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S31703 / S31703
Category Grade Standard Region/Area Standard Content
Metals S31703 NB/T 47010 China 承压设备用不锈钢和耐热钢锻件

Chemical composition(mass fraction)(wt.%) of the S31703

Element Min Max Similar
S - 0.0200 -
P - 0.0350 -
Mo 3.0000 4.0000 -
Ni 11.0000 15.0000 -
Cr 18.0000 20.0000 -
Mn - 2.0000 -
Si - 1.0000 -
C - 0.0300 -

Mechanical Properties of steel grade S31703

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)
195 (≥) 928 (≥) 33 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade S31703

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
43 - -     0.22 -  
286 825 - 22.3 312   -  
545 - 24 12.2   333 313

Heat Treatment of steel grade S31703

Heat treated : 1885°C - 1716°C

Technological Curves of steel grade S31703

Cross Reference Table (Equivalent Grade) of S31703

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