This Cobalt-Chromium-Nickel alloy gives a combination of high strength, ductility and good mechanical properties and is age hardenable. Phynox also has excellent fatigue life, corrosion resistance in numerous environments and is non-magnetic.

Use where a high resistance to corrosion and / or low relaxation at temperatures up to 380oC (715oF) are required.

Applications include:

  • Springs
  • Seal Components
  • Medical Devices
  • Components for Watches
  • Aerospace Applications
  • Petro-chemical Applications
  • Marine Engineering

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Approximate Chemical Composition
Co 39-41%
Cr 19-21%
Ni 14-16%
Mo 6-8%
Fe BAL
DENSITY 8.3 g/cm3 0.300 lb/in3
MELTING POINT 1427oC 2600oF
COEFFICIENT OF EXPANSION 12.5 µm/m °C
( 20 - 100°C)
7.0 x 10-6 in/in °F
( 70 - 212°F)
MODULUS OF RIGIDITY 77 kN/m2 11168 ksi
MODULUS OF ELASTICITY 203.4 kN/m2 29501 ksi
 
CONDITION OF SUPPLY HEAT TREATMENT (AFTER FORMING)
Annealed Phynox cannot be age hardened in the annealed condition.
Spring Tempered Age harden at 520°C (970°F) for 5 hours and air cool.
 
CONDITION  

APPROX TENSILE STRENGTH

 

APPROX SERVICE TEMPERATURE

Annealed 800-1000 N/mm2 116-145 ksi -185 to 450°C -300 to 840°F
Spring Tempered 1400-1900 N/mm2 203-276 ksi -185 to 450°C -300 to 840°F
Spring Temper + Aged 1900-2200 N/mm2 276-319 ksi -185 to 450°C -300 to 840°F
 
STANDARDS
AMS 5833 ISO 5832 AMS 5834
 


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