Alloy 80A,Nimonic 80A Tube,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 Tube (UNS N07080)** --- ### **1. Introduction** **Alloy 80A** (commercially known as **Nimonic 80A**, UNS N07080) is a nickel-chromium superalloy strengthened by age-hardening through titanium and aluminum additions. In **tube** form, this material is specifically engineered for high-temperature applications requiring exceptional creep resistance, oxidation resistance, and mechanical stability at temperatures up to **815°C (1500°F)**. The tube product is ideal for heat exchangers, instrumentation, and fluid conveyance systems in extreme environments. --- ### **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | Nickel (Ni) | Balance | Austenitic matrix, high-temperature stability | | Chromium (Cr) | 18.0–21.0 | Oxidation and corrosion resistance | | Titanium (Ti) | 1.8–2.7 | Primary age-hardening element (γ' precipitates) | | Aluminum (Al) | 1.0–1.8 | Secondary age-hardening element | | Iron (Fe) | ≤3.0 | Residual element | | Carbon (C) | ≤0.10 | Grain boundary strengthening | | Silicon (Si) | ≤1.0 | Oxidation resistance | | Manganese (Mn) | ≤1.0 | Deoxidation | | Copper (Cu) | ≤0.2 | Residual element | | Zirconium (Zr) | ≤0.15 | Creep property enhancement | | 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 | 20–100°C | | Thermal Conductivity | 11.7 W/m·K | At 20°C | | Specific Heat | 440 J/kg·K | At 20°C | | Modulus of Elasticity | 214 GPa (31.0 × 10⁶ psi) | At 20°C | | Electrical Resistivity | 1.24 μΩ·m | At 20°C | --- ### **4. Mechanical Properties (Solution Treated & Aged)** **Room Temperature Properties:** - **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** - **Excellent High-Temperature Strength**: Maintains mechanical properties under thermal and mechanical stress - **Superior Creep Resistance**: Ideal for long-term service under load at elevated temperatures - **Outstanding Oxidation Resistance**: Chromium content provides protection in oxidizing atmospheres - **Age-Hardenable**: Can be heat treated to optimize properties for specific applications - **Good Fabricability**: Can be bent, formed, and welded with proper techniques - **Thermal Stability**: Resists dimensional changes and property degradation during thermal cycling --- ### **6. Product Applications** **Aerospace & Defense:** - Gas turbine engine heat exchanger tubes - Afterburner fuel injection tubes - Hydraulic and lubrication system tubing - Instrumentation and sensor protection tubes - Exhaust gas temperature (EGT) sensing systems **Power Generation:** - Superheater and reheater tubes - Heat recovery steam generator (HRSG) tubing - Boiler tube applications - Steam turbine bypass systems - Nuclear reactor instrumentation tubes **Industrial Processing:** - Heat exchanger tubing - Thermocouple protection sheaths - Process furnace tubing - Radiant tube applications - Pyroprocessing equipment **Oil & Gas:** - Downhole instrumentation tubing - High-temperature process tubing - Thermal recovery systems - Refinery heater tubes --- ### **7. International Standards** | Standard Organization | Standard Designation | Description | |----------------------|---------------------|-------------| | ASTM International | ASTM B622 | Seamless Pipe and Tube | | ASTM International | ASTM B751 | Welded Tube | | ASTM International | B829 | Seamless and Welded Tubing | | ASME | SB-622 | Seamless Pipe and Tube (Pressure Vessel Code) | | ASME | SB-751 | Welded Tube | | Aerospace (SAE) | AMS 5580 | General Purpose Tubing | | European Standards | EN 10305-1 | Precision Steel Tubes | --- ### **8. Tube Specifications & Availability** **Manufacturing Methods:** - **Seamless Tube**: Hot extruded or cold drawn - **Welded Tube**: GTAW (TIG) or laser welded **Size Ranges:** - **OD Range**: 3 mm to 150 mm (0.125" to 6") - **Wall Thickness**: 0.5 mm to 12 mm (0.02" to 0.5") - **Lengths**: Standard 6-meter or cut-to-length **Tolerances:** - OD Tolerance: ±0.1 mm for precision tubes - Wall Thickness: ±10% standard, ±5% precision - Straightness: 1:1000 for precision applications --- ### **9. Heat Treatment** **Standard Tube Heat Treatment:** 1. **Solution Treatment**: 1080°C (1975°F) for 8 hours, air cool 2. **Aging**: 700°C (1290°F) for 16 hours, air cool **Special Considerations for Tubes:** - Stress relief annealing after cold drawing - Full heat treatment after severe forming operations - Localized heat treatment for welded assemblies --- ### **10. Fabrication & Installation** **Welding Procedures:** - **Preferred Method**: GTAW (TIG) - **Filler Metal**: AWS A5.14 ERNiCr-3 - **Shielding Gas**: Argon or Argon-Helium mixtures - **Post-Weld Heat Treatment**: Recommended for critical service **Tube Bending & Forming:** - **Cold Bending**: Minimum bend radius 2 × OD - **Hot Bending**: 1050–1150°C (1920–2100°F) - **Mandrel Bending**: Recommended for thin-walled tubes - **Annealing**: Required after severe deformation **Quality Control:** - Eddy current testing per ASTM E309 - Hydrostatic pressure testing - Dimensional verification - Surface finish inspection --- ### **11. Quality Assurance** - Chemical analysis certification - Mechanical test reports - Non-destructive testing records - Pressure test certificates - Full material traceability - Compliance with customer specifications --- **Disclaimer:** This technical data is for informational purposes only. Properties may vary based on manufacturing process, heat treatment, and specific product form. For critical applications, consult current manufacturer technical data sheets and relevant industry standards. Always verify material certification and testing requirements for specific service conditions.

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 2070 gallon liquid totes Special package is available on request.