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America UNS W20440 潜弧焊用低合金钢双金属丝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: W20440 / W20440
Category Grade Standard Region/Area Standard Content
Metals W20440 -- America 潜弧焊用低合金钢双金属丝

Chemical composition(mass fraction)(wt.%) of the W20440

Element Min Max Similar
Si - 0.8000 -
S - 0.0350 -
P - 0.0300 -
Ni 0.4000 0.8000 -
Mo - 0.2500 -
Mn - 1.6000 -
Cu - 0.3500 -
Cr - 0.6000 -
C - 0.1700 -

Mechanical Properties of steel grade W20440

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)
151 (≥) 648 (≥) 42 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade W20440

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 - -     0.12 -  
632 129 - 42.3 141   -  
889 - 13 21.2   222 234

Heat Treatment of steel grade W20440

Heat treated : 1467°C - 1948°C

Technological Curves of steel grade W20440

Cross Reference Table (Equivalent Grade) of W20440

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