Alloy 263,Nimonic 263 Strip,UNS N07263,E FORU

British Specs:BS HR10 BS HR206 BS HR404，American Specs:AMS 5872 Sheet Strip and Plate AMS 5886 Bar and Forgings，German Specs:WS 2.4650

### Technical Datasheet: Alloy 263 / Nimonic 263 Strip (UNS N07263) --- #### **1. Introduction** **Alloy 263** (commercially known as **Nimonic 263** and standardized as **UNS N07263**) is a nickel-cobalt-chromium superalloy strengthened by precipitation hardening with additions of titanium and aluminum. 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 **950°C (1742°F)**. --- #### **2. Chemical Composition (Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | **Nickel (Ni)** | Balance | Austenitic matrix, high-temperature stability | | **Chromium (Cr)** | 19.0–21.0 | Oxidation and corrosion resistance | | **Cobalt (Co)** | 19.0–21.0 | Solid solution strengthening | | **Molybdenum (Mo)** | 5.6–6.1 | Solid solution strengthening | | **Titanium (Ti)** | 1.9–2.4 | Primary age-hardening element (γ' former) | | **Aluminum (Al)** | 0.3–0.6 | Secondary age-hardening element | | **Carbon (C)** | 0.04–0.08 | Grain boundary strengthening | | **Iron (Fe)** | ≤ 0.7 | Residual element | | **Silicon (Si)** | ≤ 0.4 | Oxidation resistance | | **Manganese (Mn)** | ≤ 0.6 | Deoxidation | | **Copper (Cu)** | ≤ 0.2 | Residual element | | **Boron (B)** | ≤ 0.005 | Grain boundary strengthening | --- #### **3. Physical Properties** | Property | Value | Condition | |----------|-------|-----------| | **Density** | 8.36 g/cm³ (0.302 lb/in³) | At 20°C | | **Melting Range** | 1330–1360°C (2426–2480°F) | — | | **Thermal Expansion Coefficient** | 14.4 μm/m·°C | 20–100°C | | **Thermal Conductivity** | 11.2 W/m·K | At 20°C | | **Specific Heat** | 431 J/kg·K | At 20°C | | **Modulus of Elasticity** | 218 GPa (31.6 × 10⁶ psi) | At 20°C | | **Electrical Resistivity** | 1.26 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**: 850–1050 MPa (123–152 ksi) - **Yield Strength (0.2% Offset)**: 450–650 MPa (65–94 ksi) - **Elongation**: 35–50% - **Hardness**: 220–280 HV - **r-value**: 0.95–1.15 **Hard Temper:** - **Tensile Strength**: 1100–1300 MPa (160–189 ksi) - **Yield Strength (0.2% Offset)**: 950–1150 MPa (138–167 ksi) - **Elongation**: 15–25% - **Hardness**: 320–380 HV **Spring Temper:** - **Tensile Strength**: 1300–1500 MPa (189–218 ksi) - **Yield Strength (0.2% Offset)**: 1150–1350 MPa (167–196 ksi) - **Elongation**: 8–15% - **Hardness**: 380–440 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 - **Excellent High-Temperature Strength**: Maintains mechanical properties under thermal cycling - **Outstanding Thermal Fatigue Resistance**: Suitable for cyclic temperature applications - **Good Weldability**: Can be welded without post-weld heat treatment - **Age-Hardenable**: Can be precipitation hardened to achieve specific mechanical properties - **Consistent Mechanical Properties**: Uniform characteristics across coil length and width --- #### **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**: 1150°C (2100°F) for 10–20 minutes, rapid cool 2. **Aging Treatment**: 800°C (1470°F) for 8 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 2112 gallon liquid totes Special package is available on request.