SK7 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Type | Steel Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Tool Steel | SK7 | |||
TC90 |
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SK85 |
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SK5 |
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SK80 |
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TC80 |
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SK75 |
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SK6 |
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SK70 |
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TC70 |
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SK65 |
C ≤ |
Si ≤ |
Mn ≤ |
P ≤ |
S ≤ |
Cr | Ni |
---|---|---|---|---|---|---|
0.6-0.7 | 0.1-0.35 | 0.1-0.5 | 0.03 | 0.03 | 0.3 | 0.25 |
Mo | Al | Cu | Nb | Ti | V | Ce |
0.25 | ||||||
N | Co | Pb | B | Other | ||
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) |
---|---|---|---|---|---|---|
984 (≥) | 135 (≥) | 12 | 12 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 141 |
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 | - | - | 0.34 | - | |||
646 | 559 | - | 24.3 | 111 | - | ||
687 | - | 31 | 33.2 | 331 | 442 |
Heat treated : 1376°C - 1561°C
Grade | Standard | Country | Application |
---|---|---|---|
SK75 | JIS | Japan | Carbon tool steel |
SK70 | JIS | Japan | Carbon tool steel |
SK7 | JIS | Japan | Carbon tool steel |
SK7M | JIS | Japan | Cold rolled special steel strip |
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