Barrett Nickel Alloys

NICKEL ALLOY

Precipitation hardened grades 718/725/925

These offer high strength and good corrosion resistance typically in sour gas well applications. They derive their high strength from precipitation of gamma double prime (Ni₃Nb) and gamma prime Ni₃(Al_,Ti).

Hardened grades are suitable for demanding service applications requiring high strength and corrosion resistance in aggressive environments. 

Common applications include:

• Tubing hangers
• Valve stems
• Gates

Solid solution strengthened grades 625 and 825

These are low strength by comparison, but 625 in particular provides excellent resistance to chloride ion induced stress-corrosion cracking. Offering moderate strength, 625 is suitable for use in severe environments with its high nickel content ensuring excellent high-performance corrosion resistance.

Alloy 825 has a lower level of strength but still provides a high level of resistance to chloride-ion induced SCC.

Common applications include:

• Gaskets
• Tubing