Nickel alloys are metals created by combining nickel with another material as the primary element. It combines two materials to produce more desirable properties like increased strength and corrosion resistance. It's used in a wide range of equipment across multiple industries due to its distinct properties. Apex Metal India is a leading supplier and stockiest of nickel in all grades.
Alloy 625 is a nickel-chromium alloy which gains its stiffening effect through molybdenum and niobium additions, therefore eliminating the need for this alloy to be aged. It has superior resistance to a wide range of corrosive environments as well as the high temperature effects of oxidation and carburisation.
Alloy 625 is excellent for sea-water applications, having freedom from pitting and crevice corrosion, high corrosion fatigue strength and resistance to chloride-ion stress corrosion cracking. This alloy also has high tensile, creep and rupture strength, fatigue and thermal fatigue strength and oxidation resistance, making it suitable for aircraft engine exhaust systems, housing engine controls and aircraft ducting systems. It is also used in the nuclear field for reactor cores, control rod components in nuclear water reactors.
| C | Mn | Si | P | S | Cr | Ni | Co | Ti | Ai | Mo | Nb + Ta | Fe | - | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | 20.0 | 58.0 | - | - | - | 8.0 | 3.15 | - | % |
| Max | 0.10 | 0.50 | 0.50 | 0.15 | 0.15 | 23.0 | - | 1.0 | 0.40 | 0.40 | 10.0 | 4.15 | 5.0 | % |
| Tensile (PSI (MPA)) | Yield (0.2% offset), (PSI (MPA) Min) | Elongation in 2" or 4D min% | Reduction of Area | Rockwell Hardness HRC Max | Charpy Impacts at - 70◦C Joules (ftlb) min |
|---|---|---|---|---|---|
| 120,000(827) | 60,000(413) | 30 | 35 | 35 | Average 42 (31) Single 33(25) |