CoCrW Cobalt-Chrome Powder
Cobalt-Chrome Powders · Metal Additive Manufacturing Powder
CoCrW (the L605 class) is strengthened by both chromium and tungsten: strength and hardness sit above plain cobalt-chrome, with a balanced combination of corrosion resistance, wear resistance and high-temperature performance — the representative cobalt-base material for high-temperature valves, wear parts and cardiovascular stents (stents being one of its signature applications). In AM it suits complex valve flow channels and wear-resistant hot-end components. Tungsten content drives properties, so verify the measured W/Cr/Ni levels; require oxygen content and sphericity reports; and for medical use demand biocompatibility certification and full batch traceability.
Typical Applications
CoCrW Cobalt-Chrome Powder - Key Properties
| Chemical composition (wt%) | Co bal · Cr 19-21 · W 14-16 · Ni 9-11 · Fe ≤3 · C 0.05-0.15 |
| Density | ~9.1 g/cm³ (standard typical value) |
| Production | VIGA gas atomization |
| Standards | ASTM F90 · AMS 5759 (L605) |
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Frequently Asked Questions
How does CoCrW compare with CoCrMo?
CoCrW (L605) adds 14-16% tungsten for higher strength and hot hardness, targeting valves, wear parts and stents. CoCrMo (ASTM F75) is the medical implant standard with 27-30% Cr and 5-7% Mo. Choose by application — implant vs wear/high-temperature service.
What matters most in the chemistry?
The tungsten content (14-16%) dominates strength and wear behavior; verify measured W, Cr and Ni, plus carbon control. Small chemistry deviations visibly change performance.
Do I need certification for medical-grade CoCrW?
Yes — for stents and other implants demand biocompatibility certification and complete batch traceability from powder lot to finished device.
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