Alloy 925, UNS N09925

 Chemical composition

% Ni Fe Cr C Mn Si P S Mo Cu Ti Al Nb
min 42.0 22.0 19.5           2.5 1.5 1.9 0.10  
max 46.0   22.5 0.030 1.00 0.50 0.030 0.030 3.5 3.0 2.4 0.50 0.50

Physical properties

Density 8.08 g/cm3
Melting range 1311-1366℃

Features:Alloy 925 is a precipitation-hardenable nickel-iron-chromium alloy. It combines high strength with Alloy 825’s excellent corrosion resistance. Alloy 925 is particularly resistant to sulfide-induced stress cracking and stress-corrosion cracking.

Applications: Down-hole and surface well components for sour (containing hydrogen sulfide) crude oil and natural gas production.

Note: Incoloy is a registered trademark of the Special Metals Corporation group of companies.

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