Inconel 825 is a titanium-stabilized nickel-chromium-iron-molybdenum-copper alloy designed for use in extremely corrosive environments. It has a very high resistance to oxidation and outstanding resistance to stress corrosion cracking in chloride conditions.
It is resistant to pitting corrosion in sulphuric and phosphoric acids and resists attack in strongly oxidising media such as nitrates, nitric acid and oxidising salts. It also resists most organic acids and alkali solutions. The alloy is reasonably ductile and can be worked in a similar way to austenitic stainless steels.
SPECIFICATION OF INCONEL 825:
• UNS N08825
• ASTM /ASME B 366
CHARACTERISTICS OF INCONEL 825:
• Excellent corrosion resistance
• High resistance to oxidation
• Good ductility and workability
CHEMICAL COMPOSITION OF INCONEL 825:
| Ni | Fe | Cr | Mb | Cu | Ti | C | Mn | S | Si | Al |
|---|---|---|---|---|---|---|---|---|---|---|
| 38.0-46.0 | 22.0 min | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | .6-1.2 | 0.05 max | 1.0 max | 0.03 max | 0.5 max | 0.2 max |
MECHANICAL PROPERTIES OF INCONEL 825:
| Tensile Strength (N/mm2) | Proof Strees (N/mm²) | Elongation(%) | Hardness (Hv) |
| 590 | 220 | 30 | 121-183 |