Products

Incoloy 800

Additional information

UNS Number	N08800
Werkstoff Number	1.4876

Description

Incoloy 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.

Incoloy 800 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.

Application

Chemical and Petrochemical Processing

– Process equipment for the production of ethylene, ethylene dichloride, acetic anhydride, ketene, nitric acid and oxy-alcohol

Petroleum Refining

– Steam/hydrocarbon reformers and hydrodealkylation units

Power Generation

– Steam super-heaters and high temperature heat exchangers in gas-cooled nuclear reactors, heat exchangers and piping systems in coal-fired power plants

Thermal Processing Fixtures

– Radiant tubes, muffles, retorts and fixtures for heat-treating furnaces

Chemical Component

Chemical Components	C	Si	Mn	P	S	Cr	Ni	Cu	Ti	Al	Fe
Minimum	–	–	–	–	–	19	30	–	0.15	0.15	39.5
Maximum	0.1	1	1.5	0.045	0.015	23	35	0.75	0.60	0.60	–

Mechanical Properties

Tensile Strength
σb
Mpa

Yield Point
σs
Mpa

Elongation
δ
%

Hardness

HBW

≥515

≥205

long.
≥30

≤192

Coefficient of Thermal Expansion (CTE)					Coefficient of Thermal Conductivity	Specific Heat Capacity	Resistivity	Magnetism
200°C	400°C	600°C	800°C	1000°C	20°C	20°C	20°C
10^-6K^-1					W/m.K	J/kg.K	Ω.mm2/m
15	16	17	17.5	18	12	500	1	No