W7

This page provides SAE J 437 (1970), SAE J 438 (1970), W7 datasheet, W7 mechanical properties, chemical element W7, technical specifications of W7 steel material properties. W7 performance specifications.

Category Class Grade Standard Country Application
Steel GradesTool Die Steels W7 SAE USA Tool and die steels
Datasheet for:Steel Grades:Tool Die Steels:W7

Chemical composition(mass fraction)(wt.%) of the W7

Elements Min.(≥) Max.(≤)
C 0.95 1.10
Si 0.10 0.40
Mn 0.10 0.40
Cr 0.35 0.50
V 0.15 0.25

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade W7

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)
183 (≥) 195 (≥) 31 34 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 421
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
31 - -     0.11 -  
657 228 - 21.3 423   -  
245 - 42 21.2   214 144
Heat treated : 1989°C - 1724°C
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
W7 SAE USA
Tool and die steels
Relevant standard
Standard No. Description Download
SAE J 437 (1970) Selection and heat treatment of tool and die steels
SAE J 438 (1970) Tool and die steels
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SAE J 437 (1970), SAE J 438 (1970), W7 can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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