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W108 Extra

Description

USA SAE SAE J 437 (1970), SAE J 438 (1970), W108 Extra Tool Die Steels Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Die Steels: W108 Extra
Category Class Grade Standard Country Application
Steel GradesTool Die Steels W108 Extra SAE USA Tool and die steels

Chemical composition(mass fraction)(wt.%) of the W108 Extra

C Si Mn Cr V
0.70 -0.85 0.10 -0.40 0.10 -0.40 ≤ ≥ ≤ ≥

Mechanical Properties of steel grade W108 Extra

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)
421 (≥) 579 (≥) 44 12 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade W108 Extra

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
32 - -     0.23 -  
572 985 - 23.3 424   -  
773 - 31 11.2   234 422

Heat Treatment of steel grade W108 Extra

Heat treated : 1162°C - 1324°C

Technological Curves of steel grade W108 Extra

Cross Reference Table (Equivalent Grade) of W108 Extra

Relevant standard of W108 Extra

SAE J 437 (1970) Selection and heat treatment of tool and die steels SAE-J-437-(1970).pdf
SAE J 438 (1970) Tool and die steels SAE-J-438-(1970).pdf

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