Alloy 90,Nimonic 90 Plate,UNS N07090,E FORU

British Specs:BS HR2 Alloy 90 bar BS HR202 Alloy 90 sheet BS HR402 Alloy 90 tube BS HR501 Alloy 90 wire (springs) BS HR501 Alloy 90 wire (springs)，American Specs:AMS 5829 Welding Wire，German Specs:WS 2.4632

### Technical Datasheet: Alloy 90 / Nimonic 90 Plate (UNS N07090) --- #### **1. Introduction** **Alloy 90** (commercially known as **Nimonic 90** and standardized as **UNS N07090**) is a nickel-chromium-cobalt superalloy strengthened by age-hardening through titanium and aluminum additions. In **plate** form, this material provides exceptional structural capability for applications requiring superior high-temperature strength, oxidation resistance, and mechanical stability at temperatures up to **920°C (1688°F)**. The plate product is ideal for fabricating large components that must withstand severe thermal stress and corrosive conditions in aerospace, power generation, and industrial heating applications. --- #### **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 | | **Cobalt (Co)** | 15.0–21.0 | Solid solution strengthening | | **Titanium (Ti)** | 2.0–3.0 | Primary age-hardening element (γ' former) | | **Aluminum (Al)** | 1.0–2.0 | Secondary age-hardening element | | **Iron (Fe)** | ≤ 3.0 | Residual element | | **Carbon (C)** | ≤ 0.13 | 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)** | ≤ 0.010 | 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**: 1200–1400 MPa (174–203 ksi) - **Yield Strength (0.2% Offset)**: 800–950 MPa (116–138 ksi) - **Elongation**: 20–30% - **Hardness**: 320–380 HB - **Impact Strength**: 25–40 J **Elevated Temperature Performance:** - **650°C (1200°F)**: Tensile Strength ≈ 950 MPa (138 ksi) - **750°C (1380°F)**: Tensile Strength ≈ 700 MPa (102 ksi) - **850°C (1560°F)**: Tensile Strength ≈ 400 MPa (58 ksi) **Creep Rupture Strength (1000 hours):** - **750°C (1380°F)**: ≈ 200 MPa (29 ksi) - **850°C (1560°F)**: ≈ 80 MPa (12 ksi) --- #### **5. Key Characteristics & Advantages** - **Exceptional High-Temperature Strength**: Maintains structural integrity under severe thermal and mechanical stress - **Superior Creep Resistance**: Excellent long-term load-bearing capability at elevated temperatures - **Outstanding Oxidation Resistance**: Chromium content provides excellent protection in oxidizing atmospheres - **Age-Hardenable**: Can be heat treated to optimize mechanical properties - **Good Machinability**: Can be precision machined in solution treated condition - **Excellent Weldability**: Suitable for fabrication of complex structures - **Thermal Stability**: Resists microstructural degradation during prolonged high-temperature exposure - **Structural Reliability**: Plate form provides uniform properties throughout thickness --- #### **6. Product Applications** **Aerospace & Defense:** - Gas turbine engine combustion chambers - Afterburner components and heat shields - Exhaust system components - Structural support plates in high-temperature zones - Missile and rocket components **Power Generation:** - Gas turbine hot section components - Heat shield plates - Combustion liner assemblies - Turbine structural supports - Nuclear reactor components **Industrial Processing:** - Heat treatment furnace components - Hot work tooling plates - High-temperature fixture plates - Process reactor internals - Pyroprocessing equipment **Other Applications:** - Glass manufacturing equipment components - Ceramic kiln structural parts - Semiconductor processing equipment - Test and research facility components --- #### **7. International Standards** | Standard Organization | Standard Designation | Description | |----------------------|---------------------|-------------| | **ASTM International** | ASTM B435 | Nickel Alloy Plate, Sheet, and Strip | | **ASTM International** | ASTM B906 | General Requirements for Flat-Rolled Nickel Alloys | | **ASME** | SB-435 | Plate, Sheet, and Strip (Pressure Vessel Code) | | **Aerospace (SAE)** | AMS 5872 | Sheet, Strip, and Plate | | **European Standards** | EN 10095 | Heat Resisting Steels and Nickel Alloys | | **ISO** | ISO 6207 | Rolled Nickel and Nickel Alloy Plate | --- #### **8. Plate Specifications & Availability** **Thickness Ranges:** - **Sheet**: 0.5 mm to 5 mm (0.02" to 0.2") - **Plate**: 5 mm to 100 mm (0.2" to 4") - **Heavy Plate**: 100 mm to 200 mm (4" to 8") **Standard Sizes:** - **Widths**: Up to 2000 mm (78") - **Lengths**: Up to 6000 mm (236") - **Custom Sizes**: Available to customer requirements **Surface Conditions:** - Hot rolled, annealed, and descaled - Cold rolled, annealed, and pickled - Ground or machined surfaces - Special surface finishes on request **Tolerances:** - **Thickness**: ±5% standard, ±3% precision - **Flatness**: ≤ 5 mm per meter - **Length/Width**: ±5 mm standard --- #### **9. Heat Treatment** **Standard Plate Heat Treatment:** 1. **Solution Treatment**: 1080°C (1975°F) for 8 hours, air cool 2. **Aging Treatment**: 700°C (1290°F) for 16 hours, air cool **Special Considerations:** - Uniform heating throughout plate thickness - Controlled cooling to prevent distortion - Stress relief after machining operations --- #### **10. Fabrication & Machining** **Machining Guidelines:** - **Optimal Condition**: Solution treated condition - **Tooling**: Carbide tools with positive rake angles - **Cutting Speed**: 10–20 m/min for milling operations - **Feed Rate**: 0.1–0.3 mm/tooth - **Coolant**: Required for heavy machining **Welding Procedures:** - **Preferred Method**: GTAW (TIG) - **Filler Metal**: AWS A5.14 ERNiCr-3 - **Preheat**: Generally not required - **Post-Weld Heat Treatment**: Solution annealing recommended **Forming Operations:** - **Hot Forming**: 1050–1150°C (1920–2100°F) - **Cold Forming**: Possible with adequate radii - **Press Brake Forming**: Suitable for thinner plates - **Roll Forming**: For cylindrical components --- #### **11. Quality Assurance** **Testing & Inspection:** - Ultrasonic testing per ASTM A578 - Liquid penetrant testing per ASTM E165 - Dimensional verification - Surface quality inspection - Flatness measurement **Certification:** - Chemical analysis certification - Mechanical testing reports - Non-destructive testing reports - Heat treatment records - Full material traceability --- **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 2097 gallon liquid totes Special package is available on request.