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America UNS W21250 潜弧焊用低合金钢双金属丝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: W21250 / W21250
Category Grade Standard Region/Area Standard Content
Metals W21250 -- America 潜弧焊用低合金钢双金属丝

Chemical composition(mass fraction)(wt.%) of the W21250

Element Min Max Similar
V - 0.0500 -
Si - 0.8000 -
S - 0.0300 -
P - 0.0120 -
Ni 1.4000 2.1000 -
Mo - 0.3500 -
Mn - 1.6000 -
Cu - 0.0800 -
C - 0.1400 -

Mechanical Properties of steel grade W21250

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)
642 (≥) 629 (≥) 32 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade W21250

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
12 - -     0.13 -  
215 361 - 14.3 234   -  
148 - 22 44.2   333 242

Heat Treatment of steel grade W21250

Heat treated : 1964°C - 1518°C

Technological Curves of steel grade W21250

Cross Reference Table (Equivalent Grade) of W21250

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