Alloy A-286，Incoloy A-286 Bar(Round bar, Flat bar)，,E FORU

British Specs:，American Specs:，German Specs:

**Alloy A-286 / Incoloy A-286 Bar (Round Bar & Flat Bar)** **(UNS S66286)** **Product Overview** Alloy A-286 bar products, available in both round and flat bar forms, represent a premium precipitation-hardenable iron-nickel-chromium superalloy designed for high-strength applications in elevated temperature environments. These bar products combine exceptional mechanical properties with excellent fabrication characteristics, serving as fundamental stock material for machining critical components in aerospace, power generation, and industrial sectors where reliability at temperatures up to 1300°F (700°C) is paramount. --- **Chemical Composition (Weight %)** | Element | Content (%) | Role in Alloy | |---------|-------------|---------------| | **Iron (Fe)** | Balance | Base Element | | **Nickel (Ni)** | 24.0-27.0 | Austenite Stabilizer & Strength | | **Chromium (Cr)** | 13.5-16.0 | Oxidation & Corrosion Resistance | | **Molybdenum (Mo)** | 1.0-1.5 | Solid Solution Strengthening | | **Titanium (Ti)** | 1.9-2.35 | Primary Age-Hardening Element | | **Aluminum (Al)** | ≤0.35 | Secondary Hardening Element | | **Vanadium (V)** | 0.10-0.50 | Strengthening Element | | **Boron (B)** | 0.003-0.010 | Grain Boundary Strengthening | | **Carbon (C)** | ≤0.08 | Controlled for Stability | | **Manganese (Mn)** | ≤2.00 | Workability Enhancement | --- **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 Coefficient** | 14.2 μm/m·°C (20-100°C) | | **Thermal Conductivity** | 18.0 W/m·K @ 100°C | | **Modulus of Elasticity** | 201 GPa (29.2 × 10⁶ psi) | | **Electrical Resistivity** | 0.92 μΩ·m | **Mechanical Properties (Age-Hardened Condition):** | Property | Round Bar | Flat Bar | |----------|-----------|----------| | **Tensile Strength** | 895-1100 MPa | 895-1050 MPa | | **Yield Strength (0.2% Offset)** | 585-860 MPa | 585-830 MPa | | **Elongation** | 15-25% | 15-22% | | **Reduction of Area** | 20-35% | 18-30% | | **Hardness** | 248-321 HB | 248-311 HB | --- **International Standards & Specifications** | Standard Type | Round Bar | Flat Bar | |---------------|-----------|----------| | **ASTM** | A453 Grade 660 | B637 | | **AMS** | 5731, 5732 | 5731, 5525 | | **ASME** | - | - | | **UNS** | S66286 | S66286 | | **EN** | 1.4980 | 1.4980 | | **DIN** | - | - | --- **Product Specifications & Availability** **Round Bar:** - **Diameter Range:** 3mm to 300mm (1/8" to 12") - **Length:** 3-6 meters (standard), cut-to-length available - **Surface Finish:** Hot finished, turned, centerless ground - **Tolerance:** h9, h11, or per customer requirement **Flat Bar:** - **Thickness:** 3mm to 150mm (1/8" to 6") - **Width:** 10mm to 300mm (3/8" to 12") - **Length:** 3-6 meters (standard), custom lengths available - **Edge Condition:** As-rolled, machined, or precision ground --- **Heat Treatment Specifications** **Solution Annealing:** - Temperature: 1700-1800°F (925-980°C) - Soaking 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 to room temperature --- **Applications** **Round Bar Applications:** 1. **Aerospace Components** - Turbine engine shafts - Compressor discs and blades - Landing gear components - Engine mounting bolts 2. **Fastener Manufacturing** - High-temperature bolts and studs - Nuclear reactor bolting - Special threaded components - Aircraft structural fasteners 3. **Power Generation** - Gas turbine components - Turbine blades and shafts - Valve stems and actuators **Flat Bar Applications:** 1. **Structural Components** - High-temperature brackets - Support frames and rails - Machine tool guides - Fixture plates 2. **Industrial Equipment** - Heat treatment fixtures - Processing tooling - Wear plates and liners - Special machinery components --- **Machining & Fabrication Characteristics** **Machining (Best in Solution-Treated Condition):** - **Machinability Rating:** 40% (compared to 1212 steel) - **Cutting Speed:** 20-30 SFM for turning operations - **Tool Geometry:** Positive rake angles recommended - **Coolant:** Required for heat dissipation **Fabrication Notes:** - Good cold forming characteristics - Weldable using matching filler metals - Post-weld heat treatment essential - Grinding and EDM capabilities suitable --- **Quality Assurance** **Testing & Certification:** - Chemical analysis with spectrometer - Mechanical testing per ASTM standards - Ultrasonic testing for internal quality - Magnetic particle inspection available - Full material traceability **Quality Standards:** - ISO 9001:2015 certified manufacturing - NADCAP accredited testing facilities - Aerospace quality requirements met - Nuclear quality assurance programs --- **Comparative Advantages** | Feature | Benefit | |---------|---------| | **High Strength-to-Weight Ratio** | Ideal for weight-sensitive applications | | **Excellent Creep Resistance** | Maintains integrity under sustained load | | **Good Oxidation Resistance** | Suitable for continuous high-temperature service | | **Precise Property Control** | Through age-hardening heat treatment | | **Superior Fabricability** | Excellent machining and forming characteristics | --- **Storage & Handling** **Storage Conditions:** - Keep in dry, covered storage - Protect from contamination - Separate from other materials - Maintain identification tags **Handling Precautions:** - Use clean gloves when handling - Prevent surface damage - Avoid contamination with low-grade metals - Proper lifting equipment for heavy sections --- **Conclusion** Alloy A-286 round and flat bars offer an unparalleled combination of high-temperature strength, corrosion resistance, and fabrication versatility. Their age-hardening capability provides engineers with precise control over mechanical properties, making these products indispensable for critical applications in aerospace, power generation, and high-temperature industrial equipment. Available in various sizes, conditions, and surface finishes, A-286 bars continue to be the material of choice for applications demanding reliable performance under extreme conditions, ensuring long-term durability and operational safety in the world's most challenging engineering 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 2718 gallon liquid totes Special package is available on request.