Incoloy 925 is a precipitation-hardenable nickel-iron chromium alloy with additions of molybdenum and copper. It combines the high strength of a precipitation-hardenable alloy with the excellent corrosion resistance of alloy 825. The alloy has outstanding resistance to general corrosion, pitting, crevice corrosion and stress-corrosion cracking in many aqueous environments, including those containing sulfides and chlorides. It is widely used for surface and down-hole hardware in sour gas wells and for oil-production equipment.
Equivalent alloy:UNS N09925 (US）
Physical Properties:
|
Density |
8.08 g/cm3 |
|
Melting range |
1311-1366℃ |
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 |
|
Designation |
Standard |
|
Rod, bar and wire |
ASTM B 805 |
|
Rod, bar and forging |
ASTM B 637 |
|
Plate, sheet and strip |
ASTM B 872 |
|
Seamless pipe and tube |
ASTM B 983 |
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