| Element | Content (%) |
| Cobalt, Co | 35.7 |
| Nickel, Ni | 25.5 |
| Chromium, Cr | 19 |
| Iron, Fe | 9 |
| Molybdenum, Mo | 7 |
| Titanium, Ti | 3 |
| Niobium, Nb | 0.6 |
| Aluminum, Al | 0.2 |
| Condition | Tensile Strength ksi | Yield Strength ksi | Elongation % | Reduction of Area % | Hardness HRC |
| Annealed | 123 | 58 | 60 | 69 | |
| AMS 5841 | 160 max | 70 max | 50 | 65 | 20 HRC max |
| Annealed, Cold Worked 48% | 230 | 205 | 12 | 46 | |
| AMS 5842 | - | - | - | - | ≥38HRC |
| Annealed, Cold Worked + Aged | 275 | 265 | 8 | 35 | |
| AMS 5843 | 260 min | 250 min | 6 min | 20 min | ≥44HRC |