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to Properties of steels and cast irons
(submitted by the website administration)
| USA: AISI S1, UK: BS1, Sweden: 2710, Germany: 1.2542, Japan: SKS41 | ||||
| Chemical composition: C=0.5%, Mn=0.3%, W=2.5%, Si=0.3%, Cr=1.5% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 7.8 *10³ | kg/m³ | 486.9 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 207 | GPa | 30000 | ksi |
| Thermal expansion (20 ºC) | 10.9*10-6 | ºCˉ¹ | 6.0*10-6 | in/(in* ºF) |
| Specific heat capacity | 461 | J/(kg*K) | 0.11 | BTU/(lb*ºF) |
| Thermal conductivity | 31.9 | W/(m*K) | 221 | BTU*in/(hr*ft²*ºF) |
| Annealing temperature | 740...760 | ºC | 1365...1400 | ºF |
| Quenching temperature | 860...900 | ºC | 1580...1650 | ºF |
| Tempering temperature | 175...480 | ºC | 350...900 | ºF |
| Hardness (annealed) | 98 | RB | 98 | RB |
| Hardness (hardened) | 62 | RC | 62 | RC |
| Quenching medium | Oil | |||
| Hardening depth | Medium | |||
| Resistivity to distortion | Medium | |||
| Resistivity to cracking | High | |||
| Machinability | Medium | |||
| Toughness | High | |||
| Wear resistance | Medium | |||
