Retra Medical
1 / 5
We are suppliers of Cobalt Chrome Molybdenum (ASTM F1537 Alloy 1) in round bar stock. This is a cobalt-chromium-molybdenum (Co-Cr-Mo) alloy used for machining and forging stock, especially in the medical implant industry. The molybdenum improves strength and heat resistance, while the chromium provides oxidation and corrosion resistance. This material is highly biocompatible, making it ideal for surgical implants such as knee, hip, and shoulder replacements.
This low alloy steel features high strength, hardness, toughness, and creep-resistance. Difficulty in machining is comparable to titanium alloyed steel. We can supply custom precision ground sizes and tolerances upon demand.
Primarily used in medical manufacturing where high fatigue life is required for repeated movements in joints. Biocompatibility is similar to titanium with greater mechanical strength for load-bearing applications.
| Element | Cobalt | Chromium | Nickel | Molybdenum | Carbon |
|---|---|---|---|---|---|
| Content | 66.00 max | 27 max | 0.2 max | 5.5 max | 0.04 max |
| Condition | 0.2% Yield Strength | 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 |
| Density | Poisson’s Ratio | Modulus of Elasticity | Specific Gravity |
|---|---|---|---|
| 0.2990 lb/in³ | 0.300 | 35.0 x 10³ ksi | 8.29 |
