Cobalt Chrome Molybdenum Bar Stock - Chrome Moly Steel - ASTM F1537 Alloy 1
We are suppliers of Cobalt Chrome Molybdenum (ASTM F1537 Alloy 1) in round bar stock, sometimes known as chrome moly steel. 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. Our medical grade CCM steel bar is domestically melted and produced by a leading global US manufacturer and is universally accepted by all major medical OEMs.
Cobalt Chrome Moly Inventory Size Ranges
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Working with Cobalt Chrome Molybdenum (CCM)
This low alloy steel features high strength, hardness, toughness, and creep-resistance that also makes it difficult to machine when compared to mild carbon steels. Tools can wear rapidly with this product, and work hardening should be minimized with sharp tools and low vibration machines and mounts. Difficulty in machining is comparable to titanium alloyed steel. We can supply custom precision ground sizes and tolerances upon demand.
Cobalt Chrome Moly Supply Chain Solutions
- Get same or next day shipment from stock; mill quantities to blanket orders
- FIRSTCUT+® Processing Services
- Comprehensive inventory management
- All material is melt-source traceable
Standard Inventory Specifications
- ASTM F1537
- ASTM F1537 Alloy #1
- UNS R31537
Common Trade Names
- BioDur® Carpenter CCM® Alloy
- CarTech® BioDur® CCM® Alloy
Common Applications of Cobalt Chrome Moly
Our CoCrMo bar stock (F1537 Alloy 1) is primarily used in the medical manufacturing industry, where its high fatigue life is appropriate for repeated movements found in joints like knees and hips. Biocompatibility is similar to titanium, with greater mechanical strength for load bearing applications.
- Acetabular Cups
- Knee replacements
- Hip replacement implants
- Shoulder replacement implants
- Spinal rods, cages and disc replacement
- Fracture fixation
Our medical grade CCM round bar is domestically melted and produced by a leading global US manufacturer and is universally accepted by all major medical OEMs.
Chemical Composition
| Element | Percent by Weight | |
|---|---|---|
| Co | Cobalt | 66.00 max |
| Cr | Chromium | 27 max |
| Ni | Nickel | 0.2 max |
| Mo | Molybdenum | 5.5 max |
| C | Carbon | 0.04 max |
| - | Other | - |
Physical Properties of Cobalt Chrome Moly
|
Physical Properties |
|
|---|---|
|
Density |
0.2990 lb/in |
|
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 |
Mechanical Properties of Cobalt Chrome Moly
|
Condition |
0.2% Yield Strength |
Ultimate Tensile Strength |
% Elongation in 4D |
% Reduction of Area |
HRC Hardness |
|
|---|---|---|---|---|---|---|
|
Annealed |
85 ksi 585 MPa |
150 ksi 1035 MPa |
25 |
23 |
30 |
|
|
Warm Worked |
135 ksi 930 MPa |
190 ksi 1310 MPa |
26 |
23 |
40 |
|
|
Hot Worked |
110 ksi 760 MPa |
160 ksi 1100 MPa |
25 |
23 |
33 |
|
United Performance Metals is Approved ISO 13485 : 2016
*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.