Name: Alloy 80A
Brand: Ever Nickel
Price: 99.99 USD
Availability: InStock
Rating: 4.8 (50 reviews)

Alloy 80A

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

Nimonic^® 80A – High-Performance Alloy for Elevated Temperatures

Nimonic^® 80A, also known as Alloy 80A or 2.4952, is a nickel-chromium alloy enhanced with titanium and aluminum, offering outstanding strength and resistance to oxidation at high temperatures. This alloy is highly suitable for applications where materials are exposed to prolonged stress and elevated temperatures, making it ideal for the aerospace, energy, and automotive industries.

"Nimonic^®" is registered trademarks of Special Metals Corporation group of companies.

W.Nr 2.4952

W.Nr 2.4631

UNS N07080

AWS 031

ASTM B637

BS 3076 NA 20

BS HR 1

BS HR 601

Date Sheet

Nimonic® 80A is renowned for its:

High-Temperature Strength – It maintains excellent mechanical strength and creep resistance even at temperatures up to 815°C.

Oxidation Resistance – This alloy offers superior oxidation resistance, allowing it to perform reliably in harsh, high-heat environments.

Durability and Stability – Thanks to its carefully balanced composition, Nimonic® 80A retains structural integrity and stability under sustained stress and heat.

Applications of Nimonic® 80A

Due to its unique properties, Nimonic® 80A is widely applied in:

Gas Turbines – The alloy is ideal for turbine blades, discs, and other components that operate under high stress and temperatures.

Exhaust Valves – In automotive and heavy machinery, Nimonic® 80A is used in exhaust systems where heat resistance is critical.

Industrial Heating Equipment – For equipment exposed to continuous high temperatures, Nimonic® 80A ensures longevity and reliability.

Chemical Composition

The chemical composition of Inconel® 718 is indicated in the table below:

Element	Min %	Max %
C	–	0.08
Mn	–	0.35
Si	–	0.35
P	–	0.015
S	–	0.015
Cr	17.00	21.00
Ni	50.00	55.00
Mo	2.80	3.30
Nb/Cb	4.75	5.50
Ti	0.65	1.15
Al	0.20	0.80
Co	–	1.00
Ta	–	0.05
B	–	0.006
Cu	–	0.30
Pb	–	0.0005
Bi	–	0.00003
Se	–	0.0003
Fe	bal

Mechanical Properties

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

Density	Melting Point	Coefficient of Expansion	Modulus of Rigidity	Modulus of Elasticity
8.19 g/cm³	1365 °C	12.7 μm/m °C (20 – 100 °C)	85 kN/mm²	222 kN/mm²
0.296 lb/in³	2490°F	7.1 x 10-6 in/in °F (70 – 212 °F)	12328 ksi	32199 ksi

Heat treatment of finished parts

The typical heat treatment of Nimonic^® 80A:

Condition as supplied by AWI	Type	Temperature	Time	Cooling
Annealed	Age Harden	700 °C (1290 °F)	16 Hr	Air
Spring Temper	Age Harden	600 °C (1110 °F)	16 Hr	Air

Physical 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 strength	1200 – 1400 N/mm²	174 – 203 ksi
Approx. operating temperature depending on load** and environment	up to 550 °C	up to 1020 °F

Spring Temper
Approx. tensile strength	1300 – 1500 N/mm²	189 – 218 ksi
Approx. operating temperature depending on load** and environment	–	–

Spring Temper + Aged
Approx. tensile strength	1500 – 1800 N/mm²	218 – 261 ksi
Approx. operating temperature depending on load** and environment	up to 350 °C	up to 660 °F

A brief history of Alloy 718

Originally developed in the late 1950s for the aerospace industry, Alloy 718 was created to meet the need for materials with exceptional strength, weldability, and corrosion resistance in extreme environments. Its unique formulation, featuring niobium as a key element, allowed for slow precipitation hardening, which made it easier to process compared to earlier superalloys. The alloy’s combination of high tensile strength and resistance to oxidation and creep made it a revolutionary material for jet engines, gas turbines, and other high-stress applications.

Common applications

Alloy 718 is widely used in aerospace applications, including turbine blades, rocket motors, and cryogenic tanks. Its ability to maintain strength at high temperatures has made it invaluable for components in gas turbines and jet engines. Beyond aerospace, it is also employed in the power generation and oil and gas industries for components such as fasteners, springs, and valve stems, which operate under high pressure and temperature.

Resistance to corrosion and heat

Alloy 718 offers excellent resistance to oxidation and corrosion in a wide range of environments. Its high nickel content provides outstanding resistance to chloride-ion stress corrosion cracking, while the addition of chromium enhances its performance in oxidizing environments. The alloy also demonstrates superior resistance to sulfur compounds and thermal fatigue, allowing it to withstand prolonged exposure to high temperatures without significant degradation.

Modern Innovations

Alloy 718 continues to evolve with advancements in manufacturing techniques. Additive manufacturing processes, such as selective laser melting (SLM), have enabled the production of complex components with reduced lead times and material waste. The alloy’s excellent weldability also makes it suitable for repair and retrofit work, especially in critical aerospace and energy systems. Today, Alloy 718 remains one of the most widely used and versatile superalloys for high-stress, high-temperature environments.