Alloy 90,Nimonic 90 Strip,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 Strip (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 **strip** form, this material is precision-engineered for applications requiring exceptional high-temperature performance, excellent formability, and consistent dimensional accuracy. The strip product is particularly suited for manufacturing intricate components through stamping, forming, and deep drawing processes that must maintain integrity at temperatures up to **920°C (1688°F)**. --- #### **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 (Varies by Temper)** **Annealed Condition (Soft Temper):** - **Thickness Range**: 0.05 mm to 1.0 mm (0.002" to 0.040") - **Tensile Strength**: 1100–1300 MPa (160–189 ksi) - **Yield Strength (0.2% Offset)**: 700–900 MPa (102–131 ksi) - **Elongation**: 25–35% - **Hardness**: 280–340 HV - **r-value**: 0.85–1.05 **Hard Temper:** - **Tensile Strength**: 1300–1500 MPa (189–218 ksi) - **Yield Strength (0.2% Offset)**: 1100–1300 MPa (160–189 ksi) - **Elongation**: 12–20% - **Hardness**: 360–420 HV **Spring Temper:** - **Tensile Strength**: 1500–1700 MPa (218–247 ksi) - **Yield Strength (0.2% Offset)**: 1300–1500 MPa (189–218 ksi) - **Elongation**: 6–12% - **Hardness**: 420–480 HV --- #### **5. Key Characteristics & Advantages** - **Precision Thickness Control**: Maintains tight tolerances for high-volume production - **Exceptional Surface Quality**: Consistent surface finish with minimal imperfections - **Superior Formability**: Excellent for high-speed stamping and deep drawing operations - **Exceptional High-Temperature Strength**: Maintains mechanical properties under thermal cycling - **Outstanding Creep Resistance**: Suitable for long-term service under sustained load - **Age-Hardenable**: Can be heat treated to achieve specific mechanical properties - **Consistent Mechanical Properties**: Uniform characteristics across coil length and width - **Excellent Oxidation Resistance**: Chromium content provides long-term protection in oxidizing environments --- #### **6. Product Applications** **Aerospace & Defense:** - Turbine engine sealing shims and spacers - Combustion chamber gaskets and seals - Heat shield components - Instrumentation mounts and brackets - Electrical connector components **Electronics & Electrical:** - High-temperature electrical contacts - Spring components for elevated temperature service - Connector shells and housings - Semiconductor processing fixtures - Power semiconductor mounting shims **Industrial Processing:** - Furnace conveyor belt components - Heat treatment fixture parts - Thermal processing jigs and fixtures - High-temperature spring assemblies - Sensor protection housings **Automotive:** - Turbocharger heat shields - Exhaust system gaskets - High-temperature sensor mounts - Engine management components --- #### **7. International Standards** | Standard Organization | Standard Designation | Description | |----------------------|---------------------|-------------| | **ASTM International** | ASTM B435 | 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 | | **DIN Standards** | DIN 17750 | Nickel and Nickel Alloy Strip | --- #### **8. Strip Specifications & Availability** **Thickness Ranges:** - **Ultra-Thin Strip**: 0.05 mm to 0.3 mm (0.002" to 0.012") - **Standard Strip**: 0.3 mm to 1.0 mm (0.012" to 0.040") - **Heavy Strip**: 1.0 mm to 2.0 mm (0.040" to 0.080") **Width Ranges:** - **Narrow Strip**: 2 mm to 100 mm (0.08" to 4") - **Medium Strip**: 100 mm to 300 mm (4" to 12") - **Wide Strip**: 300 mm to 600 mm (12" to 24") **Available Conditions:** - **Annealed (Soft)**: Maximum formability - **Quarter Hard**: Good formability with higher strength - **Half Hard**: Balance of strength and formability - **Full Hard**: High strength, limited formability - **Spring Temper**: Maximum strength and spring properties **Surface Finishes:** - **Matte Finish**: Standard mill finish - **Bright Annealed**: Smooth, reflective surface - **Special Polished**: Ultra-smooth for specific applications - **Coated Varieties**: Available with special coatings --- #### **9. Heat Treatment** **Standard Strip Heat Treatment:** 1. **Solution Treatment**: 1080°C (1975°F) for 10–20 minutes, rapid cool 2. **Aging Treatment**: 700°C (1290°F) for 16 hours, air cool **Special Considerations:** - Continuous heat treatment lines for consistent properties - Tension leveling for superior flatness - Protective atmosphere annealing for bright surfaces - Controlled cooling to prevent distortion --- #### **10. Fabrication & Processing** **Stamping & Blanking:** - Suitable for high-speed progressive die stamping - Clean sheared edges with minimal burr - Good blanking characteristics in annealed condition - Recommended clearance: 5–8% of material thickness **Forming Operations:** - **Deep Drawing**: Excellent capability with proper tool design - **Bending**: Minimum bend radius = 0.8 × thickness (annealed) - **Embossing**: Can be embossed with precise patterns - **Coining**: Suitable for precise dimensional control **Welding & Joining:** - **Resistance Welding**: Excellent capability - **Laser Welding**: Suitable for precision applications - **GTAW (TIG)**: Possible with proper techniques - **Brazing**: Compatible with high-temperature alloys **Quality Control:** - 100% dimensional verification - Surface quality inspection - Mechanical testing certification - Chemical analysis certification --- #### **11. Quality Assurance** **Dimensional Control:** - **Thickness Tolerance**: ±0.005 mm for precision strips - **Width Tolerance**: ±0.1 mm standard - **Camber**: ≤ 1 mm per meter - **Flatness**: ≤ 2 mm per meter **Testing & Certification:** - **Mechanical Testing**: Tensile, yield strength, elongation - **Metallurgical Testing**: Grain size, microstructure - **Surface Quality**: Visual and microscopic examination - **Certification**: Mill test certificates per EN 10204 3.1/3.2 **Special Requirements:** - **Cleanliness**: Specific cleanliness levels available - **Packaging**: Special packaging for sensitive applications - **Traceability**: Full material traceability maintained - **Custom Testing**: Available to 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 2099 gallon liquid totes Special package is available on request.