Alloy 263,Nimonic 263 Other/Similar Specs,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 - Other Forms & Similar Specifications (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. Beyond standard product forms, this alloy is available in various specialized forms and is recognized under multiple international specifications. This datasheet covers alternative product forms, equivalent specifications, and specialized applications that demonstrate the material's exceptional versatility in high-temperature environments 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 (Solution Treated & Aged)** **Room Temperature Properties:** - **Tensile Strength**: 950–1150 MPa (138–167 ksi) - **Yield Strength (0.2% Offset)**: 550–750 MPa (80–109 ksi) - **Elongation**: 30–45% - **Hardness**: 250–320 HB - **Impact Strength**: 40–60 J **Elevated Temperature Performance:** - **650°C (1200°F)**: Tensile Strength ≈ 750 MPa (109 ksi) - **750°C (1380°F)**: Tensile Strength ≈ 500 MPa (73 ksi) - **850°C (1560°F)**: Tensile Strength ≈ 300 MPa (44 ksi) **Creep Rupture Strength (1000 hours):** - **750°C (1380°F)**: ≈ 150 MPa (22 ksi) - **850°C (1560°F)**: ≈ 60 MPa (9 ksi) - **950°C (1742°F)**: ≈ 25 MPa (4 ksi) --- #### **5. Other Product Forms & Specialized Applications** **Wire & Fastener Products:** - Welding wire and electrodes (AWS A5.14 classification) - High-temperature fasteners and bolts - Spring wire for elevated temperature applications - Instrumentation leads and supports - Safety wiring for aerospace applications **Cast Products:** - Investment cast components for complex geometries - Static castings for furnace applications - Precision cast turbine components - Valve bodies and pump components - Custom cast shapes for specific applications **Powder Metallurgy:** - Metal injection molded (MIM) components - Hot isostatic pressed (HIP) near-net shapes - Thermal spray powders for coating applications - Additive manufacturing (3D printing) powders - Plasma transferred arc welding powders **Specialized Applications:** - Nuclear reactor core components - Chemical processing equipment - Heat treating fixtures and baskets - Glass manufacturing equipment - Semiconductor processing components - Medical device components (special grades) - Research and development applications --- #### **6. International & Cross-Reference Standards** **ASTM Specifications:** - **ASTM B637**: Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock - **ASTM B435**: Plate, Sheet, and Strip - **ASTM B572**: Rod and Bar - **ASTM B622**: Seamless Pipe and Tube - **ASTM B366**: Fittings - **ASTM B619**: Welded Pipe **Aerospace Specifications:** - **AMS 5660**: Bars, Forgings, and Rings - **AMS 5872**: Sheet, Strip, and Plate - **AMS 5702**: Wire, Welding - **AMS 5580**: General Purpose Tubing **International Equivalents:** | Country/Region | Standard | Equivalent Designation | |----------------|----------|------------------------| | **Europe (ISO)** | ISO 6207 | NiCr20Co20MoTi | | **Germany** | DIN 17742 | NiCr20Co20MoTi | | **France** | NF A54-301 | NiCr20Co20MoTi | | **United Kingdom** | BS HR 505 | Nimonic 263 | | **Japan** | JIS H4551 | NCF 263 | | **China** | GB/T 15008 | GH4263 | | **Russia** | GOST | ХН78Т | **Industry-Specific Standards:** - **ASME Boiler and Pressure Vessel Code**: Section II, SB-637 - **API 6A718**: Oilfield applications - **NACE MR0175**: Sulfide stress cracking resistant materials - **PED 2014/68/EU**: Pressure Equipment Directive compliance - **AS/NZS**: Australian/New Zealand standards --- #### **7. Similar & Alternative Alloys** **Direct Equivalents:** - **Nimonic 263** (Original designation) - **W.Nr. 2.4650** (German material number) - **NA 25** (British standard) - **UNS N07263** (Unified Numbering System) **Similar Performance Alloys:** | Alloy | Max Service Temp | Key Advantages | Typical Applications | |-------|------------------|----------------|---------------------| | **Nimonic 263** | 950°C | Excellent fabricability & weldability | Combustion chambers, ducts | | **Inconel 617** | 980°C | Higher temperature capability | Heat treatment fixtures | | **Haynes 230** | 980°C | Better oxidation resistance | Furnace components | | **Nimonic 90** | 920°C | Higher strength at lower temperatures | Turbine blades | | **Waspaloy** | 870°C | Higher strength | Turbine discs | **Comparison with Key Competitors:** - **Better fabricability** than Inconel 617 - **Superior weldability** compared to Waspaloy - **Better thermal stability** than Nimonic 90 - **More cost-effective** than Haynes 230 for many applications --- #### **8. Special Processing & Treatments** **Heat Treatment Variations:** - **Solution Treatment Options**: 1100–1180°C (2010–2150°F) - **Aging Variations**: 750–850°C (1380–1560°F) - **Double Aging**: For enhanced creep resistance - **Stabilizing Treatments**: For dimensional stability - **Stress Relieving**: For machined components **Surface Treatments:** - **Aluminizing**: For enhanced oxidation resistance - **Chromizing**: For improved corrosion resistance - **Plasma Spraying**: For thermal barrier coatings - **Shot Peening**: For improved fatigue strength - **Electropolishing**: For improved surface finish **Special Processing Capabilities:** - **Hot Isostatic Pressing (HIP)**: For defect elimination - **ElectroSlag Remelting (ESR)**: For improved purity - **Vacuum Arc Remelting (VAR)**: For critical applications - **Precision Casting**: For complex shapes - **Powder Metallurgy**: For specialized components --- #### **9. Quality & Certification** **Standard Certifications:** - **Mill Test Certificates**: Per EN 10204 3.1/3.2 - **Chemical Analysis**: Full composition reporting - **Mechanical Testing**: Room and elevated temperature - **Non-Destructive Testing**: As required by specification - **Heat Treatment Records**: Complete documentation **Special Certifications Available:** - **NADCAP**: Aerospace quality system - **AS9100**: Aerospace quality management - **ISO 9001**: Quality management systems - **ISO 14001**: Environmental management - **OHSAS 18001**: Health and safety management **Testing Capabilities:** - **Creep and Stress Rupture Testing** - **Thermal Fatigue Testing** - **Oxidation Testing** - **Microstructural Analysis** - **Fracture Mechanics Testing** --- #### **10. Technical Support & Resources** **Available Documentation:** - **Material Safety Data Sheets (MSDS)** - **Welding Procedure Specifications (WPS)** - **Heat Treatment Procedures** - **Machining Guidelines** - **Corrosion Data** - **Application Notes** **Engineering Support:** - **Material Selection Assistance** - **Failure Analysis Services** - **Application Engineering Support** - **Technical Training Programs** - **Research and Development Collaboration** **Digital Resources:** - **Online Material Databases** - **Technical Calculators** - **Application Case Studies** - **Industry Standards Library** - **Technical Bulletins and Updates** --- **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 2115 gallon liquid totes Special package is available on request.