Refractory 26 Nickel Alloy,Precipitation Hardening Alloy,,E FORU

**Product Overview: Refractory 26 Nickel Alloy (Precipitation Hardening Alloy)** **Refractory 26** is a high-performance precipitation hardening nickel-based superalloy specifically engineered for applications requiring exceptional strength, corrosion resistance, and thermal stability in extreme environments. This advanced alloy combines excellent mechanical properties with outstanding resistance to oxidation and corrosion, making it suitable for the most demanding aerospace, chemical processing, and energy industry applications. --- ### **Key Characteristics & Advantages** - **Excellent High-Temperature Strength**: Maintains mechanical properties up to 980°C (1800°F) - **Superior Corrosion Resistance**: Outstanding performance in oxidizing and reducing environments - **Precipitation Hardening Capability**: Can be heat treated to achieve high strength levels - **Good Thermal Stability**: Maintains microstructural integrity under prolonged thermal exposure - **Excellent Fatigue Resistance**: Withstands cyclic loading in high-stress applications - **Good Fabricability**: Can be processed using conventional manufacturing methods --- ### **Chemical Composition (Typical Weight %)** | Element | Content Range (%) | Function Description | |------------------|-------------------|-----------------------| | **Nickel (Ni)** | Balance | Base element providing austenitic matrix | | **Chromium (Cr)**| 18.0-21.0 | Provides oxidation and corrosion resistance | | **Iron (Fe)** | 35.0-40.0 | Enhances mechanical properties and cost-effectiveness | | **Molybdenum (Mo)**| 2.5-3.5 | Improves strength and corrosion resistance | | **Niobium (Nb)** | 4.5-5.5 | Forms strengthening precipitates | | **Titanium (Ti)**| 2.5-3.2 | Enhances precipitation hardening response | | **Aluminum (Al)**| 0.4-0.8 | Contributes to age hardening | | **Carbon (C)** | ≤0.03 | Controlled for optimal properties | | **Manganese (Mn)**| ≤0.5 | Improves hot workability | | **Other Elements**| ≤0.5 | Controlled impurities | --- ### **Physical Properties** | Property | Typical Value | Test Conditions | |---------------------------------|------------------------|--------------------------| | **Density** | 8.10 g/cm³ | At room temperature | | **Melting Range** | 1350-1400°C | Solidus-Liquidus | | **Thermal Expansion Coefficient**| 14.2 × 10⁻⁶/°C | 20-800°C range | | **Thermal Conductivity** | 12.5 W/m·K | At 800°C | | **Specific Heat Capacity** | 450 J/kg·K | At 800°C | | **Electrical Resistivity** | 1.18 μΩ·m | At 20°C | | **Young's Modulus** | 205 GPa | At room temperature | --- ### **Mechanical Properties** #### **Solution Annealed Condition (980°C/1h, WQ)** | Property | Temperature | Typical Value | |------------------------|-------------|----------------------| | **Tensile Strength** | 20°C | 690-760 MPa | | **Yield Strength (0.2%)** | 20°C | 275-345 MPa | | **Elongation** | 20°C | 40-50% | | **Hardness** | 20°C | 85-95 HRB | #### **Precipitation Hardened Condition (720°C/8h, FC to 620°C/8h, AC)** | Property | Temperature | Typical Value | |------------------------|-------------|----------------------| | **Tensile Strength** | 20°C | 1240-1380 MPa | | **Yield Strength (0.2%)** | 20°C | 1030-1170 MPa | | **Elongation** | 20°C | 12-18% | | **Hardness** | 20°C | 36-42 HRC | | **Impact Toughness** | 20°C | 25-35 J | --- ### **Heat Treatment** Standard heat treatment sequence includes: - **Solution Treatment**: 980°C ± 10°C for 1 hour, water quench - **Aging Treatment**: 720°C ± 5°C for 8 hours, furnace cool to 620°C - **Hold at 620°C**: 8 hours ± 0.5 hours, air cool --- ### **International Standards & Specifications** Refractory 26 complies with the following international standards: - **AMS 5545**: Nickel Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate - **ASTM B637**: Precipitation Hardening Nickel Alloy Bars, Forgings, and Forging Stock - **ASME SB637**: Boiler and Pressure Vessel Code Specification - **ISO 9724**: Nickel Alloys for High-Temperature Service - **DIN 17750**: Nickel Alloys - Technical Delivery Conditions - **UNS N0726**: Unified Numbering System Designation --- ### **Applications** 1. **Aerospace Industry**: - Gas turbine engine components - Turbine blades and disks - Compressor parts - Aircraft structural components - Rocket motor cases 2. **Chemical Processing**: - Reactor vessels and heat exchangers - Pumps and valves for corrosive media - Distillation columns - Process piping systems - Catalyst support grids 3. **Power Generation**: - Gas turbine components - Heat recovery steam generators - Nuclear reactor components - Steam turbine parts - Boiler components 4. **Oil and Gas Industry**: - Downhole tools and equipment - Wellhead components - Subsea systems - Refinery equipment - Pressure vessels --- ### **Manufacturing Considerations** - **Forging**: Hot workable in temperature range 1050-1150°C - **Machining**: Can be machined using conventional methods with proper tooling - **Welding**: Weldable using matching filler metals and proper procedures - **Heat Treatment**: Requires precise control of time-temperature parameters - **Surface Treatment**: Responds well to various surface enhancement techniques --- ### **Available Forms** - **Bar and Rod**: Various diameters and lengths - **Sheet and Plate**: Multiple thicknesses and sizes - **Forgings**: Custom shapes and sizes - **Wire and Strip**: For specialized applications - **Tubing**: Seamless and welded varieties - **Fasteners**: Bolts, nuts, and special fasteners --- **Disclaimer**: *The information provided is for technical reference purposes only. Refractory 26 is a specialized alloy requiring proper processing and heat treatment to achieve specified properties. Actual performance may vary depending on manufacturing processes, heat treatment parameters, and specific application conditions. Users should consult with qualified materials engineers and adhere to relevant specifications for critical applications. All manufacturing and processing should follow approved procedures and quality standards.*

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 3110 gallon liquid totes Special package is available on request.