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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Nimonic® 80A

Nimonic® 80A

Nimonic® 80A is a Nickel-Chromium alloy which is precipitation hardenable. It has largely been superseded by Nimonic 90 and Inconel X-750, but because of the low Cobalt content, it is still specified for nuclear applications. Nimonic® 80A performs well in applications where high temperature and continuous stress is a significant consideration. Beyond nuclear applications, it is traditionally used in applications such as gas turbines, as well as for exhaust valves in racing engines and spindles and fasteners for the motorsport sector.

Nimonic® 80A is also known as Nicrofer 7520 Ti, Pyromet 80A, Superimphy 80A, and Udimet 80A.

Available in all profile options

Nimonic® 80A - Alloy Wire International 1

Key Features

Nimonic® 80A offers the following key features:

Largely superseded by Nimonic 90 & Inconel X-750
Still specified for nuclear applications due to low cobalt content
Age hardenable
High temperature dynamic applications^^

Typical Applications

Nimonic® 80A is known to be suitable for the following applications:

Gas turbine components
Nuclear industry
Fasteners


Designations

W.Nr 2.4952
W.Nr 2.4631
UNS N07080
AWS 031

Specifications

ASTM B637
BS 3076 NA 20
BS HR 1
BS HR 601

Chemical Composition

The chemical composition of Nimonic® 80A is indicated in the table below:

ElementMin %Max %
C0.040.10
Si1.00
Mn1.00
S0.015
Ag0.0005
Al1.001.80
B0.008
Bi0.0001
Co2.00
Cr18.0021.00
Cu0.20
Fe1.50
Pb0.002
Ti1.82.70
Nibal

Alloy Details

Nimonic® 80A density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
8.19 g/cm³1365 °C12.7 μm/m °C (20 – 100 °C)85 kN/mm²222 kN/mm²
0.296 lb/in³2490°F7.1 x 10-6 in/in °F (70 – 212 °F)12328 ksi32199 ksi

Heat treatment of finished parts

The typical heat treatment of Nimonic® 80A:

Condition as supplied by AWITypeTemperatureTimeCooling
AnnealedAge Harden700 °C (1290 °F)16 HrAir
Spring TemperAge Harden600 °C (1110 °F)16 HrAir

Properties

The typical mechanical properties of Nimonic® 80A:

Annealed
Approx. tensile strength<1000 N/mm²<145 ksi
Approx. operating temperature depending on load** and environment
Annealed + Aged
Approx. tensile strength1200 – 1400 N/mm²174 – 203 ksi
Approx. operating temperature depending on load** and environment up to 550 °Cup to 1020 °F
Spring Temper
Approx. tensile strength1300 – 1500 N/mm²189 – 218 ksi
Approx. operating temperature depending on load** and environment
Spring Temper + Aged
Approx. tensile strength1500 – 1800 N/mm²218 – 261 ksi
Approx. operating temperature depending on load** and environment up to 350 °Cup to 660 °F

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

*Trade name of Special Metals Group of Companies ^^ Dynamic applications = active / lively / changing