Incoloy Alloy 800

The Incoloy alloys are used in a wide range of industries and applications around the world, including:

Aerospace Engineering                                                    Electrical Resistance Heating

Oil and Gas Extraction                                                       Power Generation

Automotive Engineering                                                    Electronics and Communications

Petrochemical Processing                                               Thermal Processing and Heat Treatment

Chemical Processing                                                        Marine Engineering

Pollution Control and Waste Processing                       Welding

Incoloy Alloy 800

Common Trade Names: Incoloy 800, Alloy 800, Ferrochronin 800, Nickelvac 800, Nicrofer 3220.

Chemical Composition

Limiting Chemical Composition, %  by Weight 

Nickel..................................................................................30.0-35.0

Chromium............................................................................19.0-23.0

Iron.......................................................................................39.5min.

Carbon................................................................................0.10max.

Manganese.........................................................................1.50max. 

Sulfur................................................................................0.015max. 

Silicon...................................................................................1.0max.

Copper................................................................................0.75max. 

Aluminum............................................................................0.15-0.60

Titanium..............................................................................0.15-0.60

INCOLOY alloy 800 (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.

INCOLOY alloy 800 is used in a variety of applications involving exposure to corrosive environments and high temperatures. It is used for heat-treating equipment such as baskets, trays, and fixtures. In chemical and petrochemical processing, the alloy is used for heat exchangers and other piping systems in nitric acid media especially where resistance to chloride stress-corrosion cracking is required. In nuclear power plants, it is used for steam-generator tubing. The alloy is often used in domestic appliances for sheathing of electric heating elements. In the production of paper pulp, digester-liquor heaters are often made of alloy 800. In petroleum processing, the alloy is used for heat exchangers that air cool the process stream.

Available Product Forms: Pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire.