Application Segments


Melting Route

Airmelted + ESR

Product Description

BÖHLER L605 is a wrought cobalt-20chromium-15tungsten-10nickel alloy used for surgical implants. The properties specified apply specifically to wrought bar, rod, wire
BÖHLER L605 is a nonmagnetic cobalt-based chromium-tungsten nickel alloy that has excellent corrosion and oxidation resistance, and high strength at both room and elevated temperatures. Usually BÖHLER L605 is supplied solution heat treated and quenched condition to attain optimum properties. Through work hardening, high strength levels can be obtained and BÖHLER L605 can be used in the cold worked and aged condition. Applications include medical implant devices, e.g. stents, springs, valves, and engine components for the aerospace industry.
The alloy composition covered by this specification has been successfully employed in human implants. Long-term clinical experience has shown an acceptable level of biological response.

Technical Specifications

Material Numbers

L-605 2.4964 CoCr20W15N R30605


ISO 5832-5 F90

Chemical Composition

Chemical composition (average %)
0.05 to 0.15 max. 0.40 1.00 to 2.00 max. 0.040 max. 0.030 19.00 to 21.00 9.00 to 11.00 14.00 to 16.00 REM max. 3.00


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