CoCrMo is a wrought cobalt-chromium-molybdenum alloy (ASTM F1537) designed for high-strength, corrosion-resistant applications requiring excellent biocompatibility and fatigue durability. It is the workhorse material for load-bearing orthopedic implants—hip and knee replacements, spinal fusion devices—and cardiac applications like stents and heart valve components, where it must withstand years of cyclic loading in the corrosive physiological environment. Engineers select this alloy over titanium or stainless steel alternatives when implants must tolerate high contact stresses, when manufacturing via wrought processing (forging, rolling) is economical, and when the material's proven long-term clinical track record is essential for regulatory approval.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 12.00 | - | — | ||
Fatigue Strength (10⁷ cycles)(σf) | 500.0 | MPa | notes | ||
Hardness (Vickers)(HV) | 390 | HV | — | ||
Poisson's Ratio(ν) | 0.2900 | - | — | ||
Ultimate Tensile Strength(σUTS) | 1.172 | GPa | ASTM F1537 | ||
Yield Strength (0.2% offset)(σy) | 827.0 | MPa | ASTM F1537 | ||
Young's Modulus(E) | 210.0 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | 14.80 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 8.300 | kg/m³ | — |