Nimonic 80A is a nickel-chromium age-hardenable alloy

Material Overview:

Nimonic® Alloy 80A is an age-hardenable nickel-chromium alloy enhanced by additions of titanium, aluminum, and carbon for temperatures up to 1500°F (815°C). This alloy is produced by high-frequency melting and casting for products that require extrusion. For forged forms, electroslag refined material is used. A vacuum refined version is also available. Nimonic® 90 is recommended as a welding filler material for Nimonic® Alloy 80A. The metal must be solution treated prior to welding. This alloy is suitable for fusion welding using the tungsten inert gas (TIG) and metal inert gas (MIG) methods.

Chemical composition:

The chemical composition of Nimonic 80A is as follows:

• Nickel (Ni): 69.0%

• Chromium (Cr): 20.0%

• Cobalt (Co): ≤ 2.0%

• Titanium (Ti): ≤ 2.3%

• Aluminum (Al): ≤ 1.4%

Physical properties:

• Density: 8.19 g/cm³ (0.296 lb/in³)

• Melting point: 1320-1365°C (2408-2489°F)

Mechanical properties:

• Tensile strength in annealed state: 1250 MPa (181 ksi)

• Yield strength in annealed state: 780 MPa (113 ksi)

• Elongation: 30%

Applications:

• Gas turbine components (blades, rings and disks)

• Bolts

• Nuclear boiler pipe supports

• Inserts and cores for die castings

• Automotive exhaust valves

Standards and specifications:

• UNS N07080

• BS 3076

• ASTM B637

• DIN 17742

• DIN17754

Summary:

Nimonic 80A is a nickel-chromium age-hardening alloy suitable for manufacturing components that work in high temperature environments. Its high temperature strength, good mechanical properties and corrosion resistance make it an ideal material for the aerospace, automotive and industrial fields.