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ISO 5832-7 Forgeable and Cold-formed Cobaltchromium-nickel-molybdenum-iron Alloy
A-ONE ALLOY supplys R30003 strip per
Implants for surgery -Metallic materials - Part 7: Forgeable and cold-formed cobaltchromium-nickel-molybdenum-iron alloy
Chemical composition
| Element | Element compositional limits, % (m/m) |
| Cobalt Chromium Nickel Molybdenum Manganese Silicon Carbon Phosphorus Sulfur Beryllium Iron |
39 to 42 18,5 to 21,5 14 to 18 6,5 to 8,0 1,0 to 2,5 1 max. 0,15 max. 0,015 max. 0,015 max. 0,001 max. Balance |
Grain size
The grain size shall be no coarser than grain size No. 5.
Mechanical properties
| Condition |
Tensile strength min. MPa |
Proof stress min. MPa |
Percentage elongation min. % |
| Annealed | 950 | 450 | 65 |
| Hot worked | 950 | 600 | 20 |
| 30% cold-worked | 1 450 | 1 300 | 8 |
| Spring temper | 1 650 | 1 400 | 1 |
Forms of supply
Cold rooled strip, cold drawn wire, cold drawn bar