合号 Alloy |
硬度 Hardness |
合金成分 Nominal Composition wt% | ||||||||
Co | Cr | Si | B | Mo | Fe | Ni | W | C | ||
Co 45 | 45 HRC | BAL | 29 | 1 | 0.85 | 5 | 5 | 1 | ||
Co 50 | 50 HRC | BAL | 19 | 4 | 3 | 5.5 | 2.5 | 29 | 0.25 | |
Co 55 | 55 HRC | BAL | 30 | 4 | 3 | 2.5 | 11 | 5.5 | 1 | |
Co 60 | 60 HRC | BAL | 27.5 | 1.5 | Mn:0.5 | 3 | 3 | 4 | 4.5 | 1 |