Elgiloy® Alloy

Elgiloy® (a registered trademark of Elgiloy Specialty Metals).alloy is a Cobalt-Chromium-Nickel-Molybdenum alloy which has very high strength combined with excellent corrosion resistance, and high fatigue strength. Elgiloy® alloy wire is outstanding in sour well environments due it’s ability to be highly resistant to sulfide stress corrosion cracking. The material can operate at a maximum of 850°F (454°C) in cryogenic temperatures. Alongside these benefits the material is is virtually immune to crevice and stress corrosion and pitting even at the highest strength levels.


AMS 5833, AMS 5834, ASTM F1058, NACE MR0175 (ISO 15156-3), ISO 5832-7, UNS R30003


Oil & Gas, Medical, Dental, Aerospace, Defence and Space


Springs, torsion bars, seals, medical devices & implants and orthodontic wire.


Chemical Composition

Co: 39.0 – 41.0
Cr: 19.0 – 21.0
Ni: 14.0 – 16.0
Mo: 6.0 – 8.0
Mn: 1.5 – 2.5
Fe: balance
Si: 1.2 max
C: 0.15 max
Be: 0.1 max
P: 0.015 max
S : 0.015 max


Elgiloy® is a registered trademark of Elgiloy Specialty Metals.



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