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Description

USA SAE SAE J 437 (1970), SAE J 438 (1970), W4 Tool Die Steels Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Die Steels: W4
Category Class Grade Standard Country Application
Steel GradesTool Die Steels W4 SAE USA Tool and die steels

Chemical composition(mass fraction)(wt.%) of the W4

C Si Mn Cr V
0.80 -1.20 0.10 -0.40 0.10 -0.40 0.15 -0.30 ≤ ≥

Mechanical Properties of steel grade W4

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)
994 (≥) 659 (≥) 24 44 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade W4

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
21 - -     0.13 -  
965 263 - 44.3 342   -  
528 - 33 41.2   243 111

Heat Treatment of steel grade W4

Heat treated : 1668°C - 1475°C

Technological Curves of steel grade W4

Cross Reference Table (Equivalent Grade) of W4

Relevant standard of W4

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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