Alloy A-286，Incoloy A-286 Foil，Shim，,E FORU

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy A-286 / Incoloy A-286 Foil & Shim Stock** **Precision-Engineered Thin-Gauge Solutions for Extreme Environments** **Incoloy A-286 Foil and Shim Stock** represent the ultimate application of this high-performance superalloy in its most delicate and precise form. Retaining all the signature properties of A-286—exceptional high-temperature strength, outstanding oxidation resistance, and excellent fatigue performance—our foil and shim products are manufactured to exacting thickness tolerances. They are the material of choice for managing critical gaps, providing high-temperature seals, and serving as thin-section components in aerospace, automotive, and electronic applications where failure is not an option. Available in very thin foils or with adhesive backing for ease of assembly, these products solve complex engineering challenges in thermally demanding and space-constrained applications. --- #### **1. Chemical Composition (Weight %)** The chemical composition is meticulously controlled to ensure the foil and shim stock can be effectively processed and heat-treated while maintaining its renowned properties. | Element | Content (%) | | :--- | :--- | | **Iron (Fe)** | Balance | | **Nickel (Ni)** | 24.0 - 27.0 | | **Chromium (Cr)** | 13.5 - 16.0 | | **Molybdenum (Mo)** | 1.0 - 1.5 | | **Titanium (Ti)** | 1.9 - 2.35 | | **Manganese (Mn)** | 2.0 max | | **Silicon (Si)** | 1.0 max | | **Aluminum (Al)** | 0.35 max | | **Vanadium (V)** | 0.10 - 0.50 | | **Boron (B)** | 0.001 - 0.010 | | **Carbon (C)** | 0.08 max | | **Phosphorus (P)** | 0.025 max | | **Sulfur (S)** | 0.025 max | *Note:* The precise control of titanium and aluminum is critical in thin foils to ensure a consistent and effective age-hardening response without distortion. --- #### **2. Physical Properties** | Property | Value | | :--- | :--- | | **Density** | 0.290 lb/in³ (7.93 g/cm³) | | **Melting Range** | 2550 - 2600°F (1399 - 1427°C) | | **Specific Heat** | 0.11 Btu/lb-°F (460 J/kg-°K) | | **Thermal Conductivity** | 9.5 Btu-ft/hr-ft²-°F (at 212°F / 100°C) | | **Mean Coefficient of Thermal Expansion** | 9.2 x 10⁻⁶ per °F (16.6 x 10⁻⁶ per °K) from 70-1000°F | | **Modulus of Elasticity (Tension)** | 29.5 x 10⁶ psi (203 GPa) | --- #### **3. Mechanical Properties (Typical for Age-Hardened Condition)** Thin foils and shims are typically supplied in the solution-annealed or age-hardened condition, with properties tailored for formability or final strength. | Property | Solution Annealed (Typical) | Age-Hardened (Typical) | | :--- | :--- | :--- | | **Tensile Strength** | 95 - 110 ksi (655 - 760 MPa) | 130 - 150 ksi (895 - 1035 MPa) | | **Yield Strength (0.2% Offset)** | 45 - 60 ksi (310 - 415 MPa) | 90 - 110 ksi (620 - 760 MPa) | | **Elongation** | 35% min | 10% - 20% | | **Hardness** | Rb 85 max | Rc 28 - 36 | *Key Advantage:* Even in thin gauges, A-286 foil maintains a significant portion of its strength after age-hardening, unlike many other stainless steels. --- #### **4. Product Applications** The unique combination of thin gauge and high-temperature capability makes A-286 foil and shim stock ideal for: * **Aerospace & Jet Engines:** * **Turbine Case Sealing Shims:** Used as custom-shaped shims to maintain precise clearances between stationary and rotating parts at high temperatures. * **Combustor Seal Segments:** Thin foil layers used as sealing elements in combustor sections. * **Heat Shield Layers:** Foil used in multi-layer insulation systems for engine bays and airframes. * **Gaskets and Spacers** for high-temperature sensors and instrumentation. * **Automotive & Motorsport:** * **Exhaust Gaskets and Seals:** For high-performance turbocharged engines where temperatures exceed the capability of standard stainless steels. * **Thermal Management Shields** around turbochargers and exhaust manifolds. * **Electronics & Semiconductor:** * **Lead Frames** for high-reliability, high-temperature microelectronics. * **Spring Contacts** in sockets and connectors that must retain spring force at elevated temperatures. * **Industrial Processing:** * **Furnace Brazing Fixtures:** Thin strips and foils used to jig and space components during high-temperature brazing operations. * **Compensating Shims** in high-temperature pumps and valves. --- #### **5. International Standards** While foil and shim are often custom-ordered products, they are governed by the base material specifications for sheet and strip. **Primary Material Standards:** * **ASTM:** ASTM A693 (Grade 660) - Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip. * **AMS:** **AMS 5525** (Sheet, Strip, Plate - Annealed), **AMS 5528** (Sheet, Strip - Age-Hardened). These are the most directly applicable aerospace standards. * **UNS:** UNS S66286 * **EURONORM:** 1.4980 **Product Form Specifications:** * **Thickness Range:** Typically available from **0.001 inches (0.025 mm) up to 0.060 inches (1.5 mm)**. * **Temper:** Supplied in Solution Annealed (for subsequent forming and age-hardening) or Precipitation Hardened (full-hard) tempers. * **Form:** Can be supplied in coils, sheets, or custom die-cut shapes. Often available with a pressure-sensitive adhesive backing for simplified installation. --- #### **Why Choose Our Alloy A-286 Foil & Shim Stock?** * **Precision Gauge Control:** Our rolling technology ensures exceptional thickness uniformity, critical for effective sealing and precise gap management. * **Consistent Heat Treatment:** We provide material in the correct temper for your application, whether you need a formable annealed stock or a high-strength, pre-aged product. * **High-Temperature Integrity:** Unlike polymer-based or lower-grade metal shims, our A-286 products will not degrade, creep, or lose their clamping force under extreme thermal cycling. * **Custom Fabrication:** We offer precision slitting, shearing, and die-cutting services to deliver ready-to-install parts, reducing your production time and scrap. * **Full Certification:** All material is supplied with a certified Mill Test Report (MTR) traceable to the heat lot, guaranteeing compliance with AMS, ASTM, or your specific requirements. **For technical data on specific thicknesses, tempers, or to discuss your custom shim and foil requirements, please contact our engineering support team.**

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 2727 gallon liquid totes Special package is available on request.