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America UNS W21438 低合金钢含熔剂芯焊条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: W21438 / W21438
Category Grade Standard Region/Area Standard Content
Metals W21438 -- America 低合金钢含熔剂芯焊条

Chemical composition(mass fraction)(wt.%) of the W21438

Element Min Max Similar
V - 0.0500 -
Si - 0.4000 -
S - 0.0300 -
P - 0.0300 -
Ni 0.5000 1.5000 -
Mo - 0.2000 -
Mn 1.0000 2.0000 -
Cr - 0.2000 -
C - 0.1500 -
Al - 1.8000 -

Mechanical Properties of steel grade W21438

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)
445 (≥) 597 (≥) 33 21 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade W21438

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 - -     0.23 -  
497 826 - 22.3 111   -  
818 - 33 14.2   234 324

Heat Treatment of steel grade W21438

Heat treated : 1278°C - 1512°C

Technological Curves of steel grade W21438

Cross Reference Table (Equivalent Grade) of W21438

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