Alloy 909,Incoloy 909 Foil,Shim,UNS N19909,E FORU

British Specs:，American Specs:AMS 5884 Bars, Forgings, Rings AMS 5892 Sheet, Strip AMS 5893 Bars, Forgings, Rings，German Specs:

### **Product Datasheet: Alloy 909 / Incoloy 909 Foil & Shim (UNS N19909)** **Alloy 909** (commercially known as **Incoloy 909**) foil and shim products represent the thin-gauge form of this premium low thermal expansion superalloy. These precision-rolled materials are engineered for applications requiring exceptional dimensional stability, precise thickness control, and reliable performance in thermally dynamic environments where space constraints and exacting tolerances are critical. Available in various tempers and surface finishes, these thin materials maintain the same unique thermal-mechanical properties as thicker forms while offering enhanced flexibility and formability for specialized applications. --- #### **1. Chemical Composition** The chemical composition of Alloy 909 foil and shim is precisely controlled to ensure consistent performance in thin sections: | Element | Content (%) | |:---|:---| | **Nickel (Ni)** | 38.0 - 41.0 | | **Cobalt (Co)** | 13.0 - 17.0 | | **Iron (Fe)** | Balance | | **Niobium (Nb)** | 4.5 - 5.5 | | **Titanium (Ti)** | 1.3 - 1.8 | | **Silicon (Si)** | 0.40 - 0.80 | | **Aluminum (Al)** | 0.03 max | | **Carbon (C)** | 0.04 max | | **Manganese (Mn)** | 0.50 max | | **Magnesium (Mg)** | 0.003 - 0.012 | | **Sulfur (S)** | 0.004 max | | **Phosphorus (P)** | 0.010 max | | **Boron (B)** | 0.003 max | *Note: The carefully balanced composition ensures consistent age-hardening response and maintains the low thermal expansion characteristics even in ultra-thin sections.* --- #### **2. Physical Properties** Alloy 909 foil and shim exhibit the same unique physical properties as other forms: | Property | Value / Description | |:---|:---| | **Density** | 8.23 g/cm³ (0.297 lb/in³) | | **Melting Range** | ~1430°C (2600°F) | | **Coefficient of Thermal Expansion (CTE)** | **5.9 - 7.1 × 10⁻⁶/°C** (20-400°C) | | **Thermal Conductivity** | 11.5 W/m·K (at 100°C) | | **Specific Heat** | 460 J/kg·K (at 100°C) | | **Modulus of Elasticity** | 148 GPa (21.5 × 10⁶ psi) | | **Magnetic Permeability** | Essentially non-magnetic | --- #### **3. Product Specifications & Mechanical Properties** **Available Forms:** - **Foil:** Thickness ≤ 0.005" (0.127 mm) - **Shim Stock:** Thickness 0.001" - 0.060" (0.025 - 1.524 mm) - **Temper Conditions:** Annealed, 1/4 Hard, 1/2 Hard, Full Hard - **Width:** Up to 24" (610 mm) depending on thickness - **Surface Finish:** Matte, 2B, BA, or custom polished **Typical Mechanical Properties by Temper Condition:** | Temper Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |:---|:---|:---|:---| | **Annealed** | 690 - 860 | 275 - 415 | 35 - 45 | | **1/4 Hard** | 860 - 1035 | 690 - 860 | 15 - 25 | | **1/2 Hard** | 1035 - 1170 | 965 - 1100 | 8 - 15 | | **Full Hard** | 1170 - 1310 | 1100 - 1240 | 3 - 8 | --- #### **4. Product Applications** **Aerospace & Defense:** - **Turbine Engine Sealing Shims:** Critical gap management in hot sections - **Thermal Barrier Spacers:** Maintaining precise clearances during thermal cycling - **Vibration Damping Foils:** Thin layers in composite structures - **Electronic Shielding:** For avionics requiring thermal stability **Precision Engineering:** - **Calibration Standards:** Reference materials for thermal expansion measurements - **Optical Mounting Systems:** Precision spacers and alignment shims - **Laboratory Equipment:** Thermal compensation elements **Industrial Applications:** - **Furnace & High-Temperature Equipment:** Sealing and spacing components - **Semiconductor Manufacturing:** Fixturing and thermal management elements - **Medical Devices:** Precision components in diagnostic equipment --- #### **5. International Standards** **Material Standards:** - **UNS N19909**: Unified Numbering System designation - **AMS 5891**: Aerospace Material Specification (base specification) - **ASTM B753**: Standard Specification for Thermostat Metal Sheet and Strip - **ASTM B709**: Standard Specification for Sheet, Strip, and Plate **Dimensional & Quality Standards:** - **ASTM B909**: Standard Guide for Plane Strain Fracture Toughness Testing - **AS9102**: Aerospace First Article Inspection Requirement - **MIL-I-45208**: Military Specification, Inspection System Requirements **Thickness Tolerances (per ASTM B709):** | Thickness Range | Tolerance (±) | |:---|:---| | 0.001" - 0.005" | 0.0001" | | 0.005" - 0.010" | 0.0002" | | 0.010" - 0.025" | 0.0005" | | 0.025" - 0.060" | 0.0010" | --- #### **6. Key Advantages for Foil & Shim Applications** * **Precision Thickness Control:** Maintains exact tolerances for critical spacing applications * **Consistent Thermal Performance:** Low CTE ensures dimensional stability in thin sections * **Excellent Formability:** Can be stamped, blanked, and formed to complex shapes * **Surface Quality:** Available with controlled surface finishes for specific applications * **Age-Hardenable:** Can be formed in annealed condition and aged to high strength * **Fatigue Resistance:** Maintains integrity under thermal and mechanical cycling --- #### **7. Special Processing Considerations** **Heat Treatment:** Foil and shim products are typically supplied in the annealed condition for formability, with subsequent age-hardening possible to achieve final mechanical properties. **Fabrication:** - Can be stamped, etched, or laser-cut to precise shapes - Suitable for welding using micro-TIG and resistance welding techniques - Compatible with various coating and plating processes **Handling:** Due to the thin nature of foil products, special handling procedures are recommended to prevent deformation or damage during processing and installation. Alloy 909 foil and shim products offer engineers a precision material solution for the most demanding thermal management applications where exact thickness control and dimensional stability 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 1999 gallon liquid totes Special package is available on request.