Multimet N155,Multimet Foil,Shim,UNS R30155,E FORU

British Specs:，American Specs: AMS 5532 Sheet, Plate and Strip AMS 5769 Bars, Rings and Forgings AMS 5794 Welding Wire AMS 5795 Coated Electrodes，German Specs:

### Technical Data Sheet: Multimet N155 / Multimet Foil & Shim / UNS R30155 **Iron-Nickel-Chromium-Cobalt Superalloy - Foil & Shim Products** --- ### 1. Product Overview **Multimet N155 Foil and Shim** (UNS R30155) are precision-rolled thin gauge products manufactured from the iron-nickel-chromium-cobalt superalloy family. These products maintain excellent high-temperature strength and outstanding oxidation resistance in ultra-thin sections up to **980°C (1800°F)**, making them ideal for precision applications requiring reliable performance in extreme environments. --- ### 2. Chemical Composition (Weight %) | Element | Content (%) | Key Characteristics | |---------|-------------|---------------------| | **Iron (Fe)** | Balance | Matrix element | | **Chromium (Cr)** | 20.0–22.0 | Oxidation and corrosion resistance | | **Nickel (Ni)** | 19.0–21.0 | Austenitic structure stability | | **Cobalt (Co)** | 18.0–20.0 | Solid solution strengthening | | **Tungsten (W)** | 2.0–3.0 | Solid solution strengthening | | **Molybdenum (Mo)** | 2.0–3.0 | Solid solution strengthening | | **Niobium (Nb)** | 0.75–1.25 | Carbide formation and strengthening | | **Carbon (C)** | 0.05–0.10 | Carbide strengthening | | **Nitrogen (N)** | 0.10–0.20 | Solid solution strengthening | | **Manganese (Mn)** | 1.0–2.0 | Hot workability | | **Silicon (Si)** | ≤ 0.75 | Residual element | --- ### 3. Physical Properties | Property | Value | |----------|-------| | **Density** | 8.23 g/cm³ (0.297 lb/in³) | | **Melting Range** | 1370–1425°C (2500–2600°F) | | **Thermal Conductivity** | 14.2 W/m·K at 100°C | | **Mean CTE (20-100°C)** | 14.5 µm/m·°C | | **Electrical Resistivity** | 1.05 µΩ·m at 25°C | | **Magnetic Permeability** | Essentially non-magnetic | --- ### 4. Mechanical Properties **Standard Properties (Solution Annealed):** - **Foil (0.025-0.15mm):** - Tensile Strength: 700–850 MPa - Yield Strength: 350–500 MPa - Elongation: 25–35% - **Shim (0.15-0.50mm):** - Tensile Strength: 750–900 MPa - Yield Strength: 400–550 MPa - Elongation: 30–40% **Elevated Temperature Performance:** - **Stress Rupture Strength**: 100 MPa at 815°C for 100 hours - **Oxidation Resistance**: Excellent up to 980°C - **Thermal Fatigue Resistance**: Good in thin sections --- ### 5. Product Specifications **Dimensional Range:** - **Foil Thickness**: 0.025 mm to 0.15 mm (±0.002 mm) - **Shim Thickness**: 0.15 mm to 0.50 mm (±0.005 mm) - **Width Range**: 50 mm to 500 mm - **Standard Tolerance**: ±2% of thickness **Available Conditions:** - **Solution Annealed**: Maximum formability - **Cold Rolled**: Various tempers available - **Temper Rolled**: Improved flatness **Surface Finish:** - **Standard Mill Finish** - **Bright Annealed** - **Special Polished** (upon request) - **Pickled Finish** --- ### 6. Applications **Aerospace & Defense:** - Turbine blade sealing shims - Combustion chamber gaskets - Exhaust system seals - Instrumentation spacers **Industrial Processing:** - High-temperature furnace gaskets - Heat treatment fixture spacers - Chemical processing gaskets - Thermal barrier components **Power Generation:** - Gas turbine sealing elements - Heat exchanger gaskets - Boiler sealing components - Nuclear instrumentation shims **Electronics & Special Applications:** - High-temperature sensor mounts - Vacuum furnace shielding - Semiconductor processing fixtures - Research equipment components --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30155 | Material designation | | **ASTM** | B435 | Sheet, Plate, and Strip | | **AMS** | 5768 | Bar and forgings (foil applications) | | **ASTM** | B248 | Tolerances for Strip Products | --- ### 8. Fabrication Characteristics **Forming & Stamping:** - **Blankability**: Excellent in annealed condition - **Minimum Bend Radius**: 1.5T for 90° bends - **Punch Clearance**: 5–7% of material thickness - **Springback**: 10–15% typical - **Deep Drawing**: Suitable with proper tool design **Joining Methods:** - **Resistance Welding**: Good suitability - **Laser Welding**: Preferred for precision joints - **Brazing**: Using nickel-based filler metals - **Adhesive Bonding**: With high-temperature adhesives **Heat Treatment:** - **Solution Treatment**: 1175–1205°C (2150–2200°F) - **Aging Treatment**: 730–760°C (1350–1400°F) for 16 hours - **Cooling**: Water quench after solution treatment --- ### 9. Quality Assurance **Standard Testing:** - Dimensional verification with laser scanners - Surface roughness measurement - Tensile testing by lot - Hardness testing - Chemical analysis certification **Special Testing Available:** - Microstructural examination - Grain size measurement - High-temperature oxidation testing - Thermal cycling testing --- ### 10. Technical Advantages - **Excellent high-temperature strength** in thin foil configurations - **Outstanding oxidation resistance** up to 980°C - **Good thermal fatigue resistance** in cyclic conditions - **Precision thickness control** for critical applications - **Excellent surface quality** for demanding uses - **Good formability** for complex shapes - **Consistent mechanical properties** throughout coils --- ### 11. Special Considerations **High-Temperature Applications:** - Maximum continuous service: 980°C (1800°F) - Consider thermal expansion in design - Proper support for thermal cycling **Material Handling:** - Protect from surface damage during handling - Store in clean, dry environment - Avoid contamination from other metals - Clean handling environment recommended --- **Note:** Multimet N155 Foil and Shim products offer excellent performance for high-temperature precision applications where oxidation resistance and elevated temperature strength are required in thin gauge materials. The material demonstrates good fabricability and can be readily formed into complex components. Custom sizes, tolerances, and special processing are available upon request. Consult with our technical team for application-specific recommendations.

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 2298 gallon liquid totes Special package is available on request.