Alloy 907,Incoloy 907 Foil,Shim,UNS N19907,E FORU

British Specs:，American Specs:，German Specs:

### Technical Datasheet: Alloy 907 / Incoloy 907 Foil & Shim / UNS N19907 --- #### 1. Overview **Alloy 907** (commercially known as **Incoloy® 907**) is a nickel-iron-cobalt-niobium precipitation-hardening superalloy specifically engineered for applications requiring low thermal expansion characteristics and high strength at elevated temperatures. This datasheet addresses the **Foil** and **Shim** product forms, which are thin-gauge materials used for precision applications in extreme thermal environments. Incoloy 907 Foil and Shim offer excellent dimensional stability, oxidation resistance, and mechanical properties at temperatures up to 550°C (1020°F), making them ideal for critical spacing, sealing, and thermal management applications in aerospace, power generation, and industrial sectors where precision and reliability are paramount. --- #### 2. Key Characteristics * **Low Thermal Expansion:** Controlled expansion characteristics matching adjacent components * **High Temperature Strength:** Maintains mechanical properties at temperatures up to 550°C (1020°F) * **Outstanding Creep Resistance:** Superior long-term dimensional stability under load * **Excellent Thermal Stability:** Minimal thermal expansion and distortion * **Good Oxidation Resistance:** Suitable for continuous high-temperature service * **Precision Thickness Control:** Consistent dimensional accuracy * **Age-Hardenable:** Can be heat treated for optimal properties * **Good Formability:** Can be shaped and formed in annealed condition * **Excellent Surface Quality:** Smooth, uniform surface finish --- #### 3. Chemical Composition (Weight %) | Element | Minimum (%) | Maximum (%) | Key Function | | :--- | :--- | :--- | :--- | | **Nickel (Ni)** | 35.0 | 40.0 | Matrix element providing austenitic structure | | **Iron (Fe)** | Balance | - | Base element for cost-effective strengthening | | **Cobalt (Co)** | 12.0 | 16.0 | Enhances high-temperature strength and stability | | **Niobium (Nb)** | 4.3 | 5.2 | Primary precipitation hardening element | | **Titanium (Ti)** | 1.3 | 1.8 | Secondary precipitation hardener | | **Silicon (Si)** | 0.05 | 0.25 | Improves oxidation resistance | | **Aluminum (Al)** | 0.05 | 0.25 | Enhances oxidation resistance | | **Carbon (C)** | 0.01 | 0.05 | Controlled for carbide formation | | **Manganese (Mn)** | - | 0.50 | - | | **Sulfur (S)** | - | 0.015 | - | | **Boron (B)** | 0.003 | 0.012 | Enhances creep strength | --- #### 4. Physical Properties (Typical) | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 8.25 g/cm³ | 0.298 lb/in³ | | **Melting Range** | 1360-1410°C | 2480-2570°F | | **Specific Heat (20°C)** | 450 J/kg·K | 0.107 BTU/lb·°F | | **Thermal Conductivity** | 13.5 W/m·K | 78.0 BTU·in/hr·ft²·°F | | **Mean Coefficient of Thermal Expansion (20-400°C)** | 11.5 μm/m·K | 6.4 μin/in·°F | | **Electrical Resistivity** | 1.10 μΩ·m | 662 ohm·circ mil/ft | | **Modulus of Elasticity** | 205 GPa | 29.7×10⁶ psi | --- #### 5. Mechanical Properties (Typical) | Property | Foil (Annealed) | Shim (Hard Temper) | Shim (Aged) | | :--- | :--- | :--- | :--- | | **Tensile Strength** | 700-850 MPa | 950-1150 MPa | 1280-1420 MPa | | **Yield Strength** | 550-700 MPa | 850-1050 MPa | 1000-1150 MPa | | **Elongation** | 20-30% | 8-15% | 10-18% | | **Hardness** | HV 250-320 | HV 320-400 | HV 370-420 | | **Thickness Range** | 0.025-0.5 mm | 0.05-2.0 mm | 0.05-2.0 mm | --- #### 6. International Standards & Specifications **Foil & Shim Standards:** * **AMS 5916:** Nickel Alloy, Corrosion and Heat Resistant, Sheet, Strip, and Plate * **ASTM B670:** Standard Specification for Precipitation-Hardening Nickel Alloy Plate, Sheet, and Strip * **ASTM B906:** General Requirements for Flat-Rolled Nickel and Nickel Alloy Plate, Sheet, and Strip **Dimensional Standards:** * **Thickness Range:** 0.025 mm to 2.0 mm (0.001" to 0.080") * **Width Range:** Up to 300 mm (12 inches) * **Tolerance Grades:** Precision tolerance per ASTM B906 **International Equivalents:** * **UNS:** N19907 * **EN:** NiCr15Fe7NbTi * **DIN:** 2.4665 * **ISO:** 6207 (Nickel alloy strip) --- #### 7. Product Forms & Availability **Foil Products:** * **Thickness:** 0.025 - 0.2 mm (0.001" - 0.008") * **Width:** Up to 300 mm (12 inches) * **Condition:** Annealed or solution treated * **Surface Finish:** Bright annealed, cold rolled * **Packaging:** Coils or flat sheets **Shim Products:** * **Thickness:** 0.05 - 2.0 mm (0.002" - 0.080") * **Width:** Up to 600 mm (24 inches) * **Condition:** Annealed, hard temper, or aged * **Forms:** Sheets, strips, custom-cut shapes * **Special Features:** Perforated, etched, or precision blanked --- #### 8. Applications **Aerospace Industry:** * Gas turbine engine seals and gaskets * Turbine shroud seals * High-temperature shimming applications * Thermal barrier system components * Aircraft engine sealing components **Power Generation:** * Turbine casing seals and shims * High-temperature gaskets * Heat shield components * Alignment shims for hot sections * Boiler and heat exchanger seals **Industrial Applications:** * High-temperature furnace seals * Heat treatment fixture components * Precision spacing elements * Thermal management components * Chemical processing equipment seals **Electrical & Electronic:** * High-temperature electrical insulation * Thermal management substrates * Sensor mounting components * Specialized electrical contacts * Electronic packaging components --- #### 9. Processing & Fabrication **Forming Operations:** * **Blank and Pierce:** Suitable for precision blanking operations * **Bending:** Good bend capability in annealed condition * **Deep Drawing:** Can be deep drawn with proper tooling * **Stamping:** Suitable for precision stamping operations * **Heat Treatment:** Full solution and aging treatment possible **Joining Methods:** * **Resistance Welding:** Spot and seam welding * **GTAW:** Precision welding for critical applications * **Brazing:** Using nickel-based brazing alloys * **Adhesive Bonding:** For specific assembly requirements * **Mechanical Fastening:** Riveting, clinching **Heat Treatment:** * **Solution Treatment:** 980-1010°C (1800-1850°F), rapid cooling * **Aging Treatment:** * Primary: 720-745°C (1330-1375°F) for 8 hours * Secondary: 620-650°C (1150-1200°F) for 8 hours * **Stress Relieving:** 600-630°C (1110-1170°F) for 1-2 hours --- #### 10. Quality Assurance & Testing **Dimensional Control:** * Thickness monitoring at multiple points * Width and edge condition inspection * Surface quality assessment * Flatness and straightness verification **Mechanical Testing:** * Tensile testing per ASTM E8 * Hardness surveys * Springback and formability tests * Microstructural examination **Non-Destructive Testing:** * Visual inspection per ASTM A480 * Eddy Current Testing for surface defects * Dimensional verification per ASTM B906 **Certification:** * Full traceability with material certifications * Heat treatment records * Test reports and certificates of conformity * Mill Test Reports (MTR) --- **Disclaimer:** This technical information is for reference purposes. For critical applications in aerospace, nuclear, or high-temperature services, always consult the specific material certification and the latest version of applicable standards. Actual properties may vary depending on manufacturing processes, heat treatment, and specific product dimensions.

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 1986 gallon liquid totes Special package is available on request.