Exceptional acid resistance – Outstanding performance in sulfuric, phosphoric, and nitric acids. Copper addition enhances resistance to reducing acid environments.
SCC immunity – High nickel content (38-46%) provides excellent resistance to chloride-ion stress corrosion cracking, a common failure in stainless steels.
Localized corrosion protection – Molybdenum and chromium deliver strong resistance to pitting and crevice corrosion in marine and chemical service.
Stabilized & weldable – Titanium addition prevents intergranular corrosion (sensitization), ensuring reliable welded performance without post-weld heat treatment.
Incoloy 825 is a nickel-iron-chromium alloy with excellent resistance to acids and corrosion, As a professional Incoloy 825 supplier, Hengyi Metal provides plates, pipes, tubes and bars for various industrial applications worldwide
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Incolomailto:sales@hengyimetal.comy 825 With a high nickel content (~42%) offering immunity to chloride SCC, plus chromium and molybdenum for localized corrosion resistance, Incoloy 825 maintains good mechanical properties from cryogenic temperatures up to 1000°F (540°C) . The alloy is titanium-stabilized to prevent intergranular corrosion (sensitization), making it highly reliable for welded fabrications in aggressive chemical environments
Learn more about Incoloy 825
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Chemical composition
% | Ni | Fe | Cr | C | Mn | Si | S | Mo | Cu | Ti | Al |
min | 38.0 | 22.0 | 19.5 | 2.5 | 1.5 | 0.60 | |||||
max | 46.0 | 23.5 | 0.05 | 1.00 | 0.50 | 0.030 | 3.5 | 3.0 | 1.20 | 0.20 |
Specifications & Standards
Incoloy 825 is available in a wide range of product forms including wire, bar, sheet, plate, pipe, and tube.
| Product Form | Specifications |
|---|---|
| Wire & Bar | ASTM B425, BS 3076 NA16, NACE MR0175/ISO 15156, NACE MR0103 |
| Sheet & Plate | ASTM B424, BS 3075 NA16 |
| Pipe & Tube | ASTM B423, ASTM B829 |
| General | UNS N08825, Wnr 2.4858, NiCr21Mo, API 6CRA 825, AWS 022 |
Applications: Chemical process industry, acid production, pickling equipment, pollution control equipment
Note: Incoloy is a registered trademark of the Special Metals Corporation group of companies
Alloy | ASTM | DIN | BS | AFNOR | GB | |
|---|---|---|---|---|---|---|
New grades | Old grades | |||||
| Incoloy 800 | UNS N08800 | 1.4876 / X10NiCrAlTi3220 | NA15 | Z8NC32.21 | NS1101 | NS111 |
| Incoloy 800H | UNS N08810 | 1.4958 / X5 NiCrAlTi 31-20 | NA 15 (H) | NS1102 | NS112 | |
| Incoloy 800HT | UNS N08811 | 1.4959 / X 8 NiCrAlTi 32-21 | ||||
| Incoloy 825 | UNS N08825 | 2.4858 / NiCr21Mo | NA16 | NC21FeDu | NS1402 | NS142 |
| Incoloy 925 | UNS N09925 | 1.4529 / X1NiCrMoCu | ||||
| Incoloy 926 | UNS N08926 | 1.4529 / X1NiCrMoCu | X1NiCrMoCu | X1NiCrMoCu | ||
| Incoloy 901 | UNS N09901 | 2.4662 | ||||
| Incoloy 330 | UNS N08830 | |||||
