Retra Medical
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Specializing in the supply of ASTM F1537 Alloy 1 raw materials and processing. We provide Cobalt Chrome Molybdenum (BS 7252-4 Alloy 1) in round bar stock. This cobalt-chromium-molybdenum (Co-Cr-Mo) alloy is primarily used for machining and forging stock, particularly in the medical implant industry.
The addition of molybdenum improves strength and heat resistance, while chromium provides exceptional oxidation and corrosion resistance. This material is highly biocompatible, making it ideal for surgical implants such as knee, hip, and shoulder replacements.
| Element | Content (%) |
|---|---|
| Cobalt | 66.00 max |
| Chromium | 27 max |
| Nickel | 0.2 max |
| Molybdenum | 5.5 max |
| Carbon | 0.04 max |
| Condition | 0.2% Yield Strength | Ultimate Tensile Strength | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| Annealed | 585 MPa | 1035 MPa | 25 | 30 |
| Warm Worked | 930 MPa | 1310 MPa | 26 | 40 |
| Hot Worked | 760 MPa | 1100 MPa | 25 | 33 |
| Property | Value |
|---|---|
| Density | 0.2990 lb/in³ |
| Poisson's Ratio | 0.300 |
| Modulus of Elasticity | 35.0 x 10³ ksi |
| Modulus of Rigidity | 13.4 x 10³ ksi |
| Specific Gravity | 8.29 |
