instrument and implant grade metal alloys

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Co-Cr-Ni Alloy Phynox® (2.4711) Medical Alloy

Phynox® is a Cobalt-Chrome-Nickel alloy which is capable of very high strength levels (330ksi) after cold forming and aging. This alloy is the material of choice for many medical applications due to its high fatigue resistance as well as being biocompatible, non-magnetic and suitable for implants.


Joint replacement
Medical, surgical, dental instruments
Stents, lines
Drill lines
Watch components
Aerospace industry

Typical Chemical Composition

C Si Mn P S Cr Mo Ni Be Co Fe
Min 1.50 19.00 6.00 14.00 39.00
Max 0.15 2.50 21.00 8.00 16.00 0.1 41.00 Balance

Typical Mechanical Properties

Condition Tensile (Rm)
Yield (R0.2%)
Solution Heat Treated / Cold Drawn 220-260 NA NA
Solution Heat Treated / Cold Drawn / Aged 270-330 180-210 46


AFNOR K13C20N16Fe15D07
ASTM F1058
AMS 5833 / AMS 5834
ISO 5832-7
UNS R30003
UNS R30008


Phynox® (2.4711) is available in wire and round bar from 0.200mm diameter up to 15.00mm diameter

Disclaimer : Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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Metal Weight Calculator

Metal Alloy



NOTE: Weights calculated are theoretical. Manufacturing tolerances should be allowed for and results adjusted accordingly.