USA SAE SAE J 437 (1970), SAE J 438 (1970), W7 Tool Die Steels Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Tool Die Steels | W7 | SAE | USA | Tool and die steels |
C | Si | Mn | Cr | V |
---|---|---|---|---|
0.95 -1.10 | 0.10 -0.40 | 0.10 -0.40 | 0.35 -0.50 | 0.15 -0.25 |
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) |
---|---|---|---|---|---|---|
341 (≥) | 923 (≥) | 44 | 23 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 |
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 | - | - | 0.14 | - | |||
835 | 524 | - | 33.3 | 133 | - | ||
763 | - | 31 | 43.2 | 312 | 234 |
Heat treated : 1873°C - 1311°C
Grade | Standard | Country | Application |
---|---|---|---|
ASTM W7 | |||
AWS W7018-W1 | |||
UNS W74001 | |||
UNS W74002 | |||
UNS W74003 | |||
UNS W74004 | |||
UNS W75110 | |||
UNS W77510 | |||
UNS W77610 | |||
UNS W79110 | |||
UNS W79210 | |||
UNS W79310 | |||
UNS W79410 | |||
UNS W79510 | |||
UNS W79610 | |||
UNS W79710 | |||
UNS W74011 | |||
UNS W74012 | |||
UNS W74013 | |||
UNS W74014 |
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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