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to Properties of steels and cast irons
(submitted by the website administration)
| USA: AISI H13, UK: BH13, Sweden: 2242, Germany: 1.2344, Japan: SKD61 | ||||
| Chemical composition: C=0.35%, Mn=0.4%, Si=1%, Cr=5%, Mo=1.5%, V=1% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 7.8 *10³ | kg/m³ | 486.9 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 203 | GPa | 33000 | ksi |
| Thermal expansion (20 ºC) | 12.6*10-6 | ºCˉ¹ | 7.0*10-6 | in/(in* ºF) |
| Specific heat capacity | 460 | J/(kg*K) | 0.11 | BTU/(lb*ºF) |
| Thermal conductivity | 24.6 | W/(m*K) | 180 | BTU*in/(hr*ft²*ºF) |
| Annealing temperature | 850...870 | ºC | 1560...1600 | ºF |
| Quenching temperature | 1020-1050 | ºC | 1870-1920 | ºF |
| Tempering temperature | 180...425 | ºC | 360...800 | ºF |
| Hardness (annealed) | 90 | RB | 90 | RB |
| Hardness (hardened) | 60 | RC | 60 | RC |
| Quenching medium | Air, warm oil | |||
| Hardening depth | High | |||
| Resistivity to distortion | Very high | |||
| Resistivity to cracking | Very high | |||
| Machinability | Medium | |||
| Toughness | Very high | |||
| Wear resistance | Medium | |||
