Alloy 80A (UNS N07080 / 2.4952) is a precipitation-hardenable nickel-chromium superalloy developed as an enhanced evolution of Nimonic® 75. Strategic additions of aluminum (1-1.8%) and titanium (1.8-2.7%) enable the formation of gamma-prime precipitates during aging, delivering exceptional tensile strength, creep resistance, and oxidation resistance up to 815°C (1500°F) . It is the standard material for gas turbine blades, exhaust valves, and nuclear steam generator components requiring long-term reliability under sustained stress .
1. Product Specifications & Physical DataZYTC Alloy supplies UNS N07080 in comprehensive mill forms for aerospace, power generation, and automotive applications requiring verified high-temperature properties and complete material traceability. Available Forms: Round bar, flat bar, rod, plate, sheet, strip, tube, wire, and forging stock . Specifications: AMS 5829 (wire), AMS 5830 (welding wire), AMS 5879 (sheet/strip), AMS 5982 (bar/forgings), Werkstoff Nr. 2.4952, BS HR1/HR2/HR3/HR4 .
| Chemical Composition (Weight %) | Nimonic 80A Specification |
|---|
| Nickel (Ni) | Balance (approx. 70% min.) | | Chromium (Cr) | 18.0 - 21.0 | | Titanium (Ti) | 1.80 - 2.70 | | Aluminum (Al) | 1.00 - 1.80 | | Iron (Fe) | 3.0 max. | | Carbon (C) | 0.10 max. | | Manganese (Mn) | 1.0 max. | | Silicon (Si) | 1.0 max. | | Cobalt (Co) | 2.0 max. | | Copper (Cu) | 0.2 max. | | Boron (B) | 0.008 max. |
| Physical Properties | Metric | Imperial |
|---|
| Density | 8.19 - 8.25 g/cm³ | 0.296 - 0.298 lb/in³ | | Melting Range | 1320 - 1395°C | 2410 - 2540°F | | Modulus of Elasticity (RT) | 213 - 224 GPa | 30.9 - 32.5 × 10⁶ psi | | Thermal Conductivity (RT) | 11.5 W/m·K | 79.8 BTU·in/hr·ft²·°F |
| Mechanical Properties (Aged) | Temperature | Metric | Imperial |
|---|
| Tensile Strength | RT | ≥ 1250 MPa | ≥ 181 ksi | | Yield Strength (0.2% offset) | RT | ≥ 780 MPa | ≥ 113 ksi | | Elongation | RT | ≥ 30% | ≥ 30% | | Tensile Strength | 750°C (1380°F) | 820 MPa | 119 ksi | | Yield Strength | 750°C (1380°F) | 590 MPa | 86 ksi | | Elongation | 750°C (1380°F) | 10% | 10% |
2. Fabrication & Material ComparisonNimonic® 80A offers good fabricability in the solution-annealed condition, though its high strength requires appropriate equipment and techniques for forming and machining. Heat Treatment : Solution Annealing: 1079°C (1975°F) × 8 hours, air cool Aging: 700-750°C (1292-1382°F) × 16 hours, air cool (typical) Alternative Aging: 650°C × 24 hours + 750°C × 16 hours for specific property optimization
Welding: Weldable using GTAW (TIG), SMAW (MMA), and resistance welding. Matching filler metal (Nimonic 80A welding wire) required. Post-weld heat treatment (solution anneal + age) necessary to restore parent metal properties. Material must be in annealed condition prior to welding . Forming: Good ductility in annealed condition permits complex forming; hot forming preferred for severe deformation. Forging range: 982-1177°C (1800-2150°F) . Machining: Machinability similar to other age-hardenable nickel alloys; carbide tooling recommended with positive rake angles. Water-based coolants for high-speed operations; heavy lubricants for tapping and drilling. Work-hardening rate moderate; rigid setups essential .
Applications Gas Turbine Engines: Turbine blades, rotor discs, sealing rings, combustion components, nozzle guide vanes Nuclear Steam Generators: Tube supports, spacer grids, structural hardware Internal Combustion Engines: High-performance exhaust valves, valve seat inserts, turbocharger components Die-Casting: Inserts, cores, and tooling for aluminum and magnesium die-casting Automotive: High-temperature fasteners, springs, and exhaust system components Industrial: Heat treating fixtures, furnace components, hot-work tooling
Contact ZYTC Alloy for certified Alloy 80A (UNS N07080 / 2.4952) materials with complete traceability, AMS/BS specifications, technical datasheets, and competitive pricing on standard sizes or custom-forged components. Email:daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
