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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Incoloy® 800

Incoloy® 800

This Nickel-Iron-Chromium alloy has good strength and excellent resistance to oxidation and carburisation in high temperature atmospheres. Incoloy® 800 also resists corrosion in many aqueous environments, and has been used in some steam generation plants due to its resistance to stress cracking.

Incoloy® 800 is also known as Nicrofer 3220, Nicrimphy 800, and Pyromet 800.

Available in all profile options

Incoloy® 800 - Alloy Wire International 1

Key Features

Incoloy® 800 offers the following key features:

Corrosion Resistant at Ambient Temperatures
Precipitation Hardenable
High temperature static applications**

Typical Applications

Incoloy® 800 is known to be suitable for the following applications:

Process Piping
Heat Exchangers
Carburising Equipment
Heating Element Sheathing


W.NR 1.4876
UNS N08800
AWS 020


BS 3075 NA15
BS 3076 NA15

Chemical Composition

The chemical composition of Incoloy® 800 is indicated in the table below:

ElementMin %Max %

Alloy Details

Incoloy® 800 density, melting point, coefficient of expansion, and modulus of elasticity is indicated in the table below:

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
7.94 g/cm³1385 °C14.4 μm/m °C (20 – 100 °C)78.9 kN/mm²196.5 kN/mm²
0.287 lb/in³

2525 °F

7.9 x 10-6 in/in °F (70 – 212 °F)

11444 ksi

28500 ksi

Heat treatment of finished parts

The typical heat treatment of Incoloy® 800:

Condition as supplied by AWITypeTemperatureTimeCooling
Annealed or Spring TemperStress Relieve450 – 470 °C (840 – 880 °F)0.5 – 1 HrAir


The typical mechanical properties of Incoloy® 800:

Approx. tensile strength<800 N/mm²<116 ksi
Approx. operating temperature depending on load** and environment -200 to +815 °C-330 to +1500 °C
Spring Temper
Approx. tensile strength800 – 1100 N/mm²116 – 159 ksi
Approx. operating temperature depending on load** and environment -200 to +815 °C-330 to +1500 °C

The above tensile strength ranges are typical. If you require different please ask.

* Trade name of Special Metals Group of Companies ** Static applications = still/fixed/motionless/rigid