Alloy 80A,Nimonic 80A Bar(Round bar, Flat bar),UNS N07080,E FORU

British Specs:BS 3072 NA20 BS HR1 Alloy 80A Bar BS HR201 Alloy 80A sheet BS HR401 Alloy 80A Tube BS HR601 Alloy 80A Bar (rivet)，American Specs:ASTM B637，German Specs:WS 2.4631 WS 2.4952,AFNOR NC 20TA

**Technical Datasheet: Alloy 80A / Nimonic 80A Bar (UNS N07080)** **Round Bar & Flat Bar** --- ### **1. Introduction** **Alloy 80A** (commercially known as **Nimonic 80A**, UNS N07080) is a nickel-chromium superalloy strengthened by age-hardening through additions of titanium and aluminum. It is designed for high-temperature applications requiring exceptional creep resistance, oxidation resistance, and mechanical strength up to **815°C (1500°F)**. Available as **round bar** and **flat bar**, this alloy is widely used in aerospace, power generation, and industrial sectors for critical components operating under severe thermal and mechanical stress. --- ### **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | Nickel (Ni) | Balance | Austenitic matrix, provides high-temperature stability | | Chromium (Cr) | 18.0–21.0 | Oxidation and corrosion resistance | | Titanium (Ti) | 1.8–2.7 | Primary age-hardening element (forms γ' precipitates) | | Aluminum (Al) | 1.0–1.8 | Secondary age-hardening element (enhances γ' formation) | | Iron (Fe) | ≤3.0 | Residual element | | Carbon (C) | ≤0.10 | Strengthens grain boundaries | | Silicon (Si) | ≤1.0 | Improves oxidation resistance | | Manganese (Mn) | ≤1.0 | Aids in deoxidation during melting | | Zirconium (Zr) | ≤0.15 | Enhances creep properties | | Boron (B) | ≤0.008 | Grain boundary strengthening | --- ### **3. Physical Properties** | Property | Value | Condition | |----------|-------|-----------| | Density | 8.19 g/cm³ (0.296 lb/in³) | At 20°C | | Melting Range | 1360–1385°C (2480–2525°F) | — | | Thermal Expansion Coefficient | 13.9 μm/m·°C (7.7 μin/in·°F) | 20–100°C | | Thermal Conductivity | 11.7 W/m·K | At 20°C | | Specific Heat | 440 J/kg·K (0.105 Btu/lb·°F) | At 20°C | | Modulus of Elasticity | 214 GPa (31.0 × 10⁶ psi) | At 20°C | --- ### **4. Mechanical Properties (Solution Treated & Aged)** **Room Temperature (Typical):** - **Tensile Strength**: 1000–1200 MPa (145–174 ksi) - **Yield Strength (0.2% Offset)**: 700–850 MPa (102–123 ksi) - **Elongation**: 15–25% - **Hardness**: 285–350 HB **Elevated Temperature Performance:** - **650°C (1200°F)**: Tensile Strength ≈ 800 MPa (116 ksi) - **750°C (1380°F)**: Tensile Strength ≈ 600 MPa (87 ksi) - **815°C (1500°F)**: Tensile Strength ≈ 400 MPa (58 ksi) **Creep Rupture Strength (1000 hours):** - 750°C (1380°F): ≈170 MPa (25 ksi) - 815°C (1500°F): ≈70 MPa (10 ksi) --- ### **5. Key Characteristics & Advantages** - **Age-Hardenable**: Achieves high strength via precipitation hardening (γ' phase). - **Excellent Creep Resistance**: Suitable for long-term load-bearing applications at high temperatures. - **Superior Oxidation Resistance**: Chromium content protects against oxidative environments. - **Good Fabricability**: Can be machined, welded, and forged with proper techniques. - **Thermal Stability**: Retains properties after prolonged high-temperature exposure. --- ### **6. Product Applications** **Round Bar Applications:** - Gas turbine engine blades, discs, and shafts - Turbocharger rotors and shafts - High-temperature fasteners and bolts - Nuclear reactor components - Exhaust valve stems **Flat Bar Applications:** - Structural supports in high-temperature furnaces - Heat treatment fixture rails - Turbine sealing segments - Combustion chamber components --- ### **7. International Standards** | Region | Standard | Description | |--------|----------|-------------| | ASTM | ASTM B637 | Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock | | AMS | AMS 5660 | Bars, Forgings, and Rings (Solution Treated & Aged) | | EN | EN 10095 | Heat Resisting Steels and Nickel Alloys | | UNS | N07080 | Material Designation | | ISO | NiCr20TiAl | International Material Code | --- ### **8. Heat Treatment** **Standard Cycle for Bars:** 1. **Solution Treatment**: 1080°C (1975°F) for 8 hours, air cool. 2. **Aging**: 700°C (1290°F) for 16 hours, air cool. **Alternative Treatments:** - Stress relieving for machined components. - Double aging for enhanced creep resistance. --- ### **9. Fabrication Notes** **Machining:** - Perform in solution-treated condition for optimal results. - Use carbide tools with positive rake angles and adequate cooling. **Welding:** - Use GTAW (TIG) or GMAW (MIG) with matching filler metals (e.g., AWS ERNiCr-3). - Post-weld heat treatment is recommended. **Forging:** - Forging Temperature: 1050–1150°C (1920–2100°F). - Avoid forging below 950°C (1740°F) to prevent cracking. --- ### **10. Quality Assurance** - Ultrasonic testing per ASTM A388. - Chemical and mechanical certification per EN 10204 3.1/3.2. - Full traceability of heat numbers and processing history. --- **Disclaimer:** This datasheet is for informational purposes. Actual properties may vary based on processing and heat treatment. For critical applications, consult official manufacturer documentation and relevant industry standards.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2068 gallon liquid totes Special package is available on request.