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America ASME EWP Specification for tungsten and oxide dispersed tungsten electrodes for arc welding and cutting and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EWP / EWP
Category Grade Standard Region/Area Standard Content
Metals EWP ASME SFA-5.12/SFA-5.12M America Specification for tungsten and oxide dispersed tungsten electrodes for arc welding and cutting

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

Element Min Max Similar
W - 99.5000 -
Others total - 0.5000 -

Mechanical Properties of steel grade EWP

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)
774 (≥) 673 (≥) 33 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade EWP

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
44 - -     0.33 -  
289 528 - 24.3 413   -  
273 - 41 34.2   243 331

Heat Treatment of steel grade EWP

Heat treated : 1946°C - 1625°C

Technological Curves of steel grade EWP

Cross Reference Table (Equivalent Grade) of EWP

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