NIMONIC® alloy 80A is a nickel-chromium alloy renowned for its exceptional strength, high-temperature stability, and oxidation resistance. This precipitation-hardenable alloy is extensively utilized in critical applications across various industries where reliability and performance under extreme conditions are paramount.
Chemical Composition
Element
Composition (%)
Nickel (Ni)
65.0 min
Chromium (Cr)
18.0-21.0
Iron (Fe)
3.0 max
Aluminum (Al)
1.8-2.7
Titanium (Ti)
1.0-1.8
Carbon (C)
0.05 max
Manganese (Mn)
1.0 max
Silicon (Si)
1.0 max
Sulfur (S)
0.015 max
Boron (B)
0.01-0.02
Mechanical Properties
Property
Value
Tensile Strength (RT)
910 MPa (132 ksi) min
Yield Strength (0.2% offset) (RT)
550 MPa (80 ksi) min
Elongation (RT)
20% min
Creep Rupture Strength
Excellent at high temperatures
Hardness (HV)
250-310 HV
Performance at Different Temperatures
Temperature Range
Performance
Room Temperature
High strength and oxidation resistance
Elevated Temperatures (up to 815°C / 1500°F)
Excellent creep resistance and thermal stability
Cryogenic Temperatures
Maintains toughness and ductility
Industry Applications
NIMONIC® alloy 80A finds widespread applications across diverse industries:
Industry
Applications
Aerospace
Gas turbine components, turbine blades, fasteners
Power Generation
Combustion chambers, high-temperature bolts
Oil & Gas
Downhole tools, valve stems
Automotive
Exhaust valves, turbocharger components
Shapes, Sizes, and Production Standards
Shapes and Sizes
Form
Size Range
Sheets
Thickness: 0.5 mm – 6 mm
Plates
Thickness: 1 mm – 100 mm
Bars
Diameter: 6 mm – 200 mm
Wire
Diameter: 0.1 mm – 10 mm
Forgings
Various shapes and sizes as per standards
Production Standards and Corresponding Grades
Country
Standard
Corresponding Grade
United States
AMS 5766, AMS 5767, AMS 5801
N07080
Germany
DIN 17742
2.4952
France
AFNOR NC 20TA
–
United Kingdom
BS HR 202
HR202
Japan
JIS HR 202
–
China
GB/T 14992
–
Welding, Processing, Polishing, Heat Treatment, and Cold Working
Process
Details
Welding
TIG and MIG methods recommended; post-weld heat treatment required
Machining
Carbide tools and lubricants for optimal results
Polishing
Mechanical and electrochemical methods for desired finish
Heat Treatment
Solution annealing followed by aging
Cold Working
Excellent for cold forming and shaping processes
Advantages and Disadvantages
Aspect
Advantages
Disadvantages
Advantages
High strength at elevated temperatures
Limited availability in certain forms
Excellent creep resistance
Costlier compared to some alternatives
Good oxidation and corrosion resistance
Machining can be challenging
Versatile in various industrial applications
Conclusion
NIMONIC® alloy 80A stands as a robust solution for applications demanding superior strength, thermal stability, and resistance to environmental degradation. Its precise chemical composition, coupled with reliable mechanical properties and adherence to international standards, ensures optimal performance across aerospace, power generation, oil & gas, and automotive sectors globally. Designers and engineers seeking a dependable material for extreme conditions can confidently rely on NIMONIC® alloy 80A.
For detailed technical specifications and customized solutions, consulting with material suppliers and referencing specific product data sheets is recommended.
