Alloy A-286，Incoloy A-286 Strip，,E FORU

British Specs:，American Specs:，German Specs:

**Alloy A-286 / Incoloy A-286 Strip (UNS S66286)** **Product Overview** Alloy A-286 strip is a precision-rolled, thin-gauge form of the precipitation-hardenable iron-nickel-chromium superalloy, designed for applications requiring exceptional high-temperature performance combined with precise dimensional control. This age-hardenable austenitic alloy maintains superior mechanical properties at temperatures up to 1300°F (700°C), offering excellent strength, oxidation resistance, and fabrication characteristics in thin-section applications. --- **Chemical Composition (Weight %)** | Element | Content (%) | Role in Alloy | |---------|-------------|---------------| | **Iron (Fe)** | Balance | Base Element | | **Nickel (Ni)** | 24.0-27.0 | Austenite Stabilizer & Strength Provider | | **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 | Value | |----------|-------| | **Tensile Strength** | 895-1100 MPa (130-160 ksi) | | **Yield Strength (0.2% Offset)** | 585-860 MPa (85-125 ksi) | | **Elongation** | 15-25% | | **Hardness** | 248-321 HB | | **Fatigue Strength** | 480 MPa (70 ksi) | --- **International Standards & Specifications** | Standard Type | Specification | Description | |---------------|---------------|-------------| | **ASTM** | B593 | Strip and Sheet Specification | | **AMS** | 5525 | Strip and Sheet Standard | | **ASME** | - | - | | **UNS** | S66286 | Unified Numbering System | | **EN** | 1.4980 | European Standard | --- **Strip Specifications & Availability** **Available Forms:** - **Cold Rolled Strip:** Precision thickness control - **Annealed Condition:** Optimal for fabrication - **Age Hardened:** Maximum strength condition - **Various Tempers:** 1/4 Hard, 1/2 Hard, Full Hard **Size Ranges:** - **Thickness:** 0.05mm to 2.0mm (0.002" to 0.080") - **Width:** 3mm to 600mm (0.125" to 24") - **Length:** Coils or cut-to-length **Tolerances:** - **Thickness:** ±0.005mm for precision grades - **Width:** ±0.1mm for slit edges - **Camber:** 1mm per meter maximum **Surface Finish:** - **Bright Annealed:** Reflective surface - **2B Finish:** Standard matte finish - **BA Finish:** Bright annealed - **Special:** Polished or coated surfaces --- **Applications** 1. **Aerospace Components** - Aircraft structural reinforcements - Jet engine sealing strips - Missile guidance components - Satellite structural elements - Heat shield retainers 2. **Electronic Applications** - Lead frames for high-temperature electronics - Spring contacts and connectors - Electronic packaging components - Sensor elements - Battery components 3. **Automotive & Racing** - High-temperature gaskets - Turbocharger components - Exhaust system parts - Engine sealing strips - Performance automotive trim 4. **Industrial Applications** - Precision springs - Bellows and expansion joints - Instrument components - Medical device parts - Optical instrument frames --- **Heat Treatment Specifications** **Solution Annealing:** - Temperature: 1700-1800°F (925-980°C) - Time: 15-30 minutes - 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 **Special Considerations for Thin Strip:** - Controlled atmosphere annealing - Precise temperature uniformity - Minimal distortion requirements - Surface protection during processing --- **Fabrication Characteristics** **Forming & Stamping:** - Excellent deep drawing characteristics - Good stamping and blanking properties - Suitable for high-speed production - Minimal springback in annealed condition **Machining & Processing:** - Good machinability in solution-treated condition - Suitable for photochemical etching - Can be welded using resistance methods - Excellent surface treatment response **Joining Methods:** - **Resistance Welding:** Ideal for thin sections - **Laser Welding:** Precision joining - **Brazing:** With nickel-based alloys - **Adhesive Bonding:** Surface preparation required --- **Quality Assurance & Testing** **Testing Methods:** - Tensile testing per ASTM E8 - Hardness testing across strip width - Surface roughness measurement - Dimensional verification - Chemical analysis verification **Quality Standards:** - **Dimensional Control:** Tight tolerances maintained - **Surface Quality:** Free from defects and contamination - **Mechanical Properties:** Consistent through coil length - **Certification:** Full traceability with mill certificates **Special Testing:** - Microhardness testing - Grain size examination - Surface finish analysis - Flatness verification --- **Technical Performance Data** **Temperature Capability:** | Temperature Range | Recommended Application | |------------------|-------------------------| | Up to 700°C (1300°F) | Continuous service | | 700-800°C (1300-1470°F) | Short-term exposure | | Above 800°C (1470°F) | Not recommended | **Corrosion Resistance:** - Excellent oxidation resistance to 1300°F - Good resistance to industrial atmospheres - Superior stress corrosion cracking resistance - Excellent performance in steam environments --- **Design Advantages** | Feature | Benefit | |---------|---------| | **High Strength in Thin Sections** | Enables miniaturization | | **Excellent Spring Properties** | Ideal for high-temperature springs | | **Good Fatigue Resistance** | Suitable for dynamic applications | | **Precise Dimensional Control** | Consistent manufacturing results | | **Age-Hardenable** | Tailorable mechanical properties | --- **Packaging & Handling** **Packaging Options:** - Protective coiled on spools - Interleaved with protective paper - Vacuum sealed for critical applications - Custom packaging available **Handling Guidelines:** - Clean, dry handling environment - Glove protection for sensitive surfaces - Proper support to prevent deformation - Controlled unwinding equipment --- **Conclusion** Alloy A-286 strip offers an exceptional combination of high-temperature strength, corrosion resistance, and precision manufacturing capabilities, making it the material of choice for demanding applications in aerospace, electronics, and precision engineering. Its unique age-hardening characteristics combined with excellent fabrication properties enable the production of high-performance components that maintain reliability under extreme conditions. Available in various tempers, widths, and surface finishes, A-286 strip provides engineers with a versatile and reliable solution for the most challenging thin-section applications where performance and precision are paramount.

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 2723 gallon liquid totes Special package is available on request.