Retra Medical
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Specializing in the supply of Grade ASTM F2886 Medical Alloy Rod raw materials and processing. These alloys are specifically engineered for the medical implant industry, offering superior biocompatibility and mechanical performance.
Cobalt-chromium-molybdenum (Co-Cr-Mo) alloys are widely used for machining and forging stock. The addition of molybdenum improves strength and heat resistance, while chromium provides essential oxidation and corrosion resistance. This material is ideal for surgical implants such as knee, hip, and shoulder replacements.
This alloy features high strength, hardness, toughness, and creep-resistance. While it presents more challenges for machining compared to mild carbon steels, we provide custom precision ground sizes and tolerances to meet specific demands.
Primarily used in medical manufacturing where high fatigue life is required for repeated joint movements:
| Element | Content (%) |
|---|---|
| Cobalt | 66.00 max |
| Chromium | 27.00 max |
| Molybdenum | 5.50 max |
| Nickel | 0.20 max |
| Carbon | 0.04 max |
| Condition | 0.2% Yield Strength | Ultimate Tensile Strength | % Elongation | HRC Hardness |
|---|---|---|---|---|
| Annealed | 585 MPa (85 ksi) | 1035 MPa (150 ksi) | 25% | 30 |
| Warm Worked | 930 MPa (135 ksi) | 1310 MPa (190 ksi) | 26% | 40 |
| Hot Worked | 760 MPa (110 ksi) | 1100 MPa (160 ksi) | 25% | 33 |
| Property | Value |
|---|---|
| Density | 0.2990 lb/in³ |
| Poisson's Ratio | 0.300 |
| Modulus of Elasticity | 35.0 x 10³ ksi |
| Specific Gravity | 8.29 |
