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20 Nb3 Modified

Global 企业标准 20Nb3Modified and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20Nb3Modified / 20 Nb3 Modified
Category Grade Standard Region/Area Standard Content
Metals 20 Nb3 Modified -- Global

Chemical composition(mass fraction)(wt.%) of the 20 Nb3 Modified

Element Min Max Similar
Si - 0.3000 -
S - 0.0150 -
P - 0.0200 -
Ni 32.0000 36.0000 -
Nb - 0.4000 -
Mo 2.0000 3.0000 -
Mn 1.5000 2.5000 -
Fe - - -
Cu 3.0000 4.0000 -
Cr 19.0000 21.0000 -
C - 0.0350 -

Mechanical Properties of steel grade 20 Nb3 Modified

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)
263 (≥) 744 (≥) 13 32 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade 20 Nb3 Modified

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
23 - -     0.44 -  
345 999 - 34.3 224   -  
847 - 31 34.2   311 224

Heat Treatment of steel grade 20 Nb3 Modified

Heat treated : 1175°C - 1872°C

Technological Curves of steel grade 20 Nb3 Modified

Cross Reference Table (Equivalent Grade) of 20 Nb3 Modified

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