12C27
12C27 is a classic Swedish Sandvik steel used for many outdoor knives and very popular with French manufacturers like Robert David. Sometimes, 12C27 is used for mass-produced razor blades. Depending on the heat treatment, its hardness can be above or below 440C.
| Origin: | Sweden |
| Carbon (%): | 0,58 |
| Chrome (%): | 14 |
| Manganese (%): | 0,35 |
| Silicon (%): | 0,35 |
| Rockwell (HRC): | 58-60 |