Inconel 925 is a nickel-iron-chromium alloy with molybdenum, copper, titanium, and aluminium added. The chemical composition of the alloy is optimised to provide a balance of high strength and corrosion resistance. Nickel provides resistance to chloride-iron stress corrosion cracking and, when combined with molybdenum and copper, provides exceptional resistance to reducing chemicals.
| C | Mn | P | S | Si | Ni | Cr | Mo | Ai | Ti | Nb | Cu | Fe | - | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | 42.0 | 19.5 | 2.5 | 0.1 | 1.9 | - | 22.0 | 1.5 | % |
| Max | 0.03 | 1.0 | 0.03 | 0.03 | 0.5 | 46.0 | 22.5 | 3.5 | 0.5 | 2.4 | 0.5 | - | 3.0 | % |
| Tensile PSI (MPA) min | Yield (0.2% offset), PSI (MPA) Min | Elongation in 2" or 4D min% | Reduction of Area min% | Charpy Impacts at - 60◦C (-75◦F)J (ftlb) | Rockwell hardness HRC |
|---|---|---|---|---|---|
| 140,000 (965) | 110,000 (758) | 18 | 20 | Single Min 43(32) Average min 47 (35) | 30-38 |
Incoloy 925 is ideally suited to down-hole and surface gas well components such as :
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