Silver steel
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Silver steel is common tool steel that is supplied as a centerless ground round bar (with tolerances similar to that of drill bit). The name comes from the highly polished appearance of the rods; there is no silver in the alloy.
Characteristics
In the annealed state it has a hardness of 27 HRC. It can be hardened to 64 HRC.
Composition
The composition is defined by the British Standard BS-1407.
The European/Werkstoff equivalent is 1.2210 / 115CrV3, which also includes some vanadium.
| Element | BS-1407 silver steel | DIN 1.2210 / 115CrV3 | |||
|---|---|---|---|---|---|
| Min | Typ | Max | Min | Max | |
| Carbon | 0.95% | 1.13% | 1.25% | 1.10% | 1.25% |
| Chromium | 0.35% | 0.43% | 0.45% | 0.50% | 0.80% |
| Manganese | 0.25% | 0.37% | 0.45% | 0.20% | 0.40% |
| Silicon | 0 | 0.22% | 0.40% | 0.15% | 0.30% |
| Vanadium | 0.07% | 0.12% | |||
| Phosphorus | 0 | 0.014% | 0.045% | 0 | 0.03% |
| Sulphur | 0 | 0.018% | 0.045% | 0 | 0.03% |
| Iron | Balance | Balance |
Applications
Amongst other applications, it has been widely used to make such things as punches, engravers, and screwdrivers. Sheffield silver steel is used in France as a blade steel for straight razors. In Finland, German silver steel was and still is widely used for Puukko knives.[citation needed]