Retra Medical
1 / 5
Specializing in the supply of Grade ASTM F1537 Alloy 1 raw materials and processing, alloys, stainless steel, and metal quality development. Cobalt Chrome Molybdenum (ASTM F1537 Alloy 1) in round bar stock 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.
CoCrMo bar stock is primarily used in medical manufacturing where high fatigue life is required for repeated movements in joints. Biocompatibility is similar to titanium, but with greater mechanical strength for load-bearing applications.
| 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 | HRC Hardness |
|---|---|---|---|---|
| Annealed | 585 MPa | 1035 MPa | 25 | 30 |
| Warm Worked | 930 MPa | 1310 MPa | 26 | 40 |
| Hot Worked | 760 MPa | 1100 MPa | 25 | 33 |
| Density | 0.2990 lb/in³ |
| Poisson's Ratio | 0.300 |
| Modulus of Elasticity | (E) 35.0 x 10³ ksi |
| Modulus of Rigidity | (G) 13.4 x 10³ ksi |
| Specific Gravity | 8.29 |
