Alloy A-286，Incoloy A-286 Rod，,E FORU

British Specs:，American Specs:，German Specs:

**Alloy A-286 / Incoloy A-286 Rod (UNS S66286)** **Product Overview** Alloy A-286 rod is a precipitation-hardenable iron-nickel-chromium superalloy supplied in round bar form, renowned for its exceptional high-temperature strength and corrosion resistance. This age-hardenable austenitic alloy maintains superior mechanical properties at temperatures up to 1300°F (700°C), making it an ideal choice for high-stress components in aerospace, turbine engine, and fastening applications. --- **Chemical Composition (Weight %)** | Element | Content (%) | Role in Alloy | |---------|-------------|---------------| | Fe | Balance | Base element | | Ni | 24.0-27.0 | Austenite stabilizer, provides strength | | Cr | 13.5-16.0 | Oxidation and corrosion resistance | | Mo | 1.0-1.5 | Solid solution strengthening | | Ti | 1.9-2.35 | Primary age-hardening element | | Al | 0.35 max | Secondary hardening element | | V | 0.10-0.50 | Strengthening element | | B | 0.003-0.010 | Grain boundary strengthening | | C | 0.08 max | Controlled for stability | | Mn | 2.00 max | Improves workability | --- **Physical & Mechanical Properties** **Physical Properties:** | Property | Value | |----------|-------| | Density | 7.93 g/cm³ (0.286 lb/in³) | | Melting Point | 1390-1430°C (2534-2606°F) | | Thermal Expansion | 14.2 μm/m·°C (20-100°C) | | Thermal Conductivity | 18.0 W/m·K (at 100°C) | | Modulus of Elasticity | 201 GPa (29.2 × 10⁶ psi) | | Electrical Resistivity | 0.92 μΩ·m | **Mechanical Properties (Age-Hardened Condition):** | Property | Value | |----------|-------| | Tensile Strength | 895-1100 MPa (130-160 ksi) | | Yield Strength (0.2% Offset) | 585-860 MPa (85-125 ksi) | | Elongation | 15-25% | | Reduction of Area | 20-35% | | Hardness | 248-321 HB | | Fatigue Strength | 480 MPa (70 ksi) | --- **International Standards & Specifications** | Standard Type | Specification | Description | |---------------|---------------|-------------| | ASTM | A453 (Grade 660) | High-Temperature Bolting Materials | | AMS | 5731 | Bar and Forging Stock | | AMS | 5525 | Sheet, Strip, and Plate | | UNS | S66286 | Unified Numbering System | | EN | 1.4980 | European Standard | | ASME | Code Case 1991 | Nuclear Components | --- **Rod Specifications & Availability** **Diameter Range:** - Standard sizes: 3mm to 300mm (1/8" to 12") - Custom diameters available upon request **Lengths:** - Random lengths: 3-6 meters (10-20 feet) - Cut-to-length service available - Precision cut pieces for specific applications **Surface Finish:** - Hot finished and annealed - Turned and polished - Centerless ground - Peeled and drawn **Condition:** - Solution annealed - Age hardened (H900 condition) - Cold drawn - Rough turned --- **Applications** 1. **Aerospace Components** - Turbine engine shafts - Compressor discs - Afterburner components - Jet engine mounts - Structural airframe parts 2. **High-Temperature Fasteners** - Engine mounting bolts - Turbine case bolts - High-strength studs - Special threaded components - Nuclear reactor bolting 3. **Power Generation** - Gas turbine components - Turbine blades and vanes - High-temperature bolts - Valve stems and components 4. **Industrial Applications** - High-temperature tooling - Heat treatment fixtures - Nuclear reactor components - Special machinery shafts --- **Heat Treatment Specifications** **Solution Treatment:** - Temperature: 1700-1800°F (925-980°C) - Hold time: 1-2 hours per inch of thickness - Cooling: Rapid air cool or water quench **Age Hardening (Standard):** - Temperature: 1300-1400°F (705-760°C) - Time: 16-20 hours - Cooling: Air cool **Resulting Microstructure:** - Austenitic matrix with gamma prime (γ') precipitates - Optimal combination of strength and ductility - Stable at service temperatures --- **Machining & Fabrication** **Machining Characteristics:** - Best machined in solution-treated condition - Use positive rake angles and sharp tools - Recommended speeds: 20-30 SFM for turning - Use abundant coolant for heat dissipation - Moderate feeds with good chip control **Fabrication Notes:** - Good cold forming characteristics - Can be welded using matching filler metals - Post-weld heat treatment required - Grinding and EDM capabilities available --- **Quality Assurance** **Testing & Certification:** - Chemical analysis by spectroscopy - Mechanical testing to ASTM standards - Ultrasonic testing for internal quality - Magnetic particle inspection available - Full traceability with mill certificates **Quality Standards:** - ISO 9001:2015 certified - NADCAP accredited testing - Aerospace quality requirements - Nuclear quality assurance programs --- **Comparative Advantages** | Feature | Benefit | |---------|---------| | High Strength-to-Weight Ratio | Ideal for aerospace applications | | Excellent Creep Resistance | Maintains properties under sustained load | | Good Oxidation Resistance | Suitable for high-temperature service | | Age-Hardenable | Precise property control through heat treatment | | Good Fabricability | Can be machined and formed effectively | --- **Alternative Materials Comparison** | Material | Maximum Service Temperature | Key Differences from A-286 | |----------|-----------------------------|---------------------------| | Inconel 718 | 1300°F | Better stress rupture properties | | Waspaloy | 1500°F | Higher temperature capability | | 17-4PH Stainless | 600°F | Lower cost, lower temperature limit | | 304 Stainless | 1500°F | Lower strength, better corrosion resistance | --- **Conclusion** Alloy A-286 rod offers an exceptional combination of high-temperature strength, corrosion resistance, and fabricability, making it the material of choice for critical components in aerospace, power generation, and high-temperature industrial applications. Its age-hardening capability allows for precise control of mechanical properties, while its excellent machining characteristics enable the production of complex components with tight tolerances. Available in various diameters, conditions, and surface finishes, A-286 rod continues to be the preferred solution for engineers seeking reliable performance in demanding high-temperature environments.

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 2717 gallon liquid totes Special package is available on request.