Common Trade Names: Incoloy 800, Alloy 800, Ferrochronin 800, Nickelvac 800, Nicrofer 3220.
INCOLOY alloys belong to the category of super austenitic stainless steels. These alloys have nickel-chromium-iron as the base metals, with additives such as molybdenum, copper, nitrogen and silicon. These alloys are known for their excellent strength at elevated temperatures and good corrosion resistance in a variety of corrosive environments.
INCOLOY alloy 800 is an alloy of nickel, iron and chromium. The alloy is capable of remaining stable and maintaining its austenitic structure even after long time exposures to high temperatures. Other characteristics of the alloy are good strength, and high resistance to oxidizing, reducing and aqueous environments. The standard forms in which this alloy is available are round, flats, forging stock, tube, plate, sheet, wire and strip.
INCOLOY 800 round bar (UNS N08800, W. Nr. 1.4876) is a widely used material for construction of equipment requiring corrosion resistance, heat resistance, strength, and stability for service up to 1500°F (816°C). Alloy 800 offers general corrosion resistance to many aqueous media and, by virtue of its content of nickel, resists stress corrosion cracking. At elevated temperatures it offers resistance to oxidation, carburization, and sulfidation along with rupture and creep strength. For applications requiring greater resistance to stress rupture and creep, especially at temperatures above 1500°F (816°C), INCOLOY alloys 800H and 800HT are used.
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Chemical Properties of Incoloy 800
| Incoloy | Ni | Cr | Fe | C | Mn | S | Si | Cu | Al | Ti |
| 800 | 30.0-35.0 | 19.0-23.0 | 39.5min | 0.10max. | 1.50max. | 0.015max. | 1.0max. | 0.75max. | 0.15-0.60 | 0.15-0.60 |
Some typical applications are:
- Heat-treating equipment such as baskets, trays, and fixtures.
- Chemical and petrochemical processing,
- Heat exchangers and other piping systems in nitric acid media especially where resistance to chloride stress-corrosion cracking is required.
- Nuclear power plants, it is used for steam-generator tubing.
- Domestic appliances for sheathing of electric heating elements.
- Production of paper pulp, digester-liquor heaters are often made of alloy 800.
- Petroleum processing, the alloy is used for heat exchangers that air cool the process stream.
- ,Type we could offer
| AMS Number | Alloy | Type | UNS | Cross Ref. Spec | Misc./Shape | |
| AMS 5766 Bar | Incoloy 800 | Nickel | N08800 | - | Bar | |
| AMS 5766 Custom Tube | Incoloy 800 | Nickel | N08800 | - | Custom Tube | |
| AMS 5871 Plate | Incoloy 800 | Nickel | N08800 | - | Plate | |
| AMS 5871 Sheet | Incoloy 800 | Nickel | N08800 | - | Sheet | |
| AMS 5871 Strip | Incoloy 800 | Nickel | N08800 | - | Strip | |
