Multimet N155,Multimet Sheet,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 Sheet / UNS R30155 **Iron-Nickel-Chromium-Cobalt Superalloy Sheet Product** --- ### 1. Product Overview **Multimet N155 Sheet** (UNS R30155) is supplied in sheet form from the iron-nickel-chromium-cobalt superalloy family, designed for high-temperature applications requiring excellent strength and oxidation resistance up to **980°C (1800°F)**. This product offers outstanding high-temperature mechanical properties in thin sections, making it ideal for fabricating lightweight components in aerospace, power generation, and industrial processing equipment. --- ### 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 **Room Temperature Properties (Solution Annealed):** - **Tensile Strength**: 790 MPa min (115 ksi min) - **Yield Strength (0.2% Offset)**: 415 MPa min (60 ksi min) - **Elongation**: 35% min - **Hardness**: 95 HRB max **Elevated Temperature Performance:** - **Stress Rupture Strength**: 100 MPa at 815°C for 100 hours - **Creep Strength**: Excellent up to 980°C - **Oxidation Resistance**: Excellent up to 980°C --- ### 5. Product Specifications **Sheet Size Range:** - **Thickness**: 0.5 mm to 6.0 mm (0.020" to 0.236") - **Width**: 600 mm to 1500 mm (24" to 59") - **Length**: 1000 mm to 3000 mm (39" to 118") **Available Conditions:** - **Hot Rolled**: As-rolled condition - **Solution Annealed**: Optimal for fabrication - **Cold Rolled**: Improved surface finish - **Surface Finished**: Pickled, ground, or polished **Tolerance Standards:** - **Thickness Tolerance**: ±5% standard - **Width Tolerance**: ±2 mm - **Length Tolerance**: ±3 mm - **Flatness**: 3 mm/m maximum --- ### 6. Applications **Aerospace & Defense:** - Combustion chamber liners and seals - Afterburner components and ducting - Exhaust system thermal protection - Engine heat shields and cowlings **Industrial Processing:** - Heat treatment furnace liners - Radiant tubes and retorts - Chemical processing equipment - High-temperature conveyor belts **Power Generation:** - Gas turbine combustion components - Heat exchanger parts - Boiler baffles and seals - Nuclear reactor instrumentation panels **Special Applications:** - Semiconductor processing equipment - Glass manufacturing fixtures - Ceramic kiln components - Research and laboratory equipment --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30155 | Material designation | | **ASTM** | B435 | Sheet, Plate, and Strip | | **AMS** | 5768 | Bar and forgings (sheet applications) | | **ASME** | SB-435 | Boiler and Pressure Vessel Code | --- ### 8. Fabrication & Processing **Forming & Stamping:** - **Cold Forming**: Excellent in annealed condition - **Hot Forming**: 1150–1200°C (2100–2200°F) - **Minimum Bend Radius**: 2T for 90° bends - **Stamping**: Suitable for complex shapes - **Deep Drawing**: Good capability with proper tooling **Welding & Joining:** - **Welding Processes**: GTAW, GMAW, Laser - **Filler Metal**: AWS A5.14 ERNiCrCoMo-1 - **Preheat**: 200–300°C (400–600°F) recommended - **Post-Weld Heat Treatment**: Solution anneal recommended **Cutting & Machining:** - **Shearing**: Clean edges achievable - **Plasma Cutting**: Suitable for thick sheets - **Waterjet Cutting**: Ideal for complex shapes - **Laser Cutting**: Precision cutting capability - **Machining**: Use carbide tools with positive rake --- ### 9. Quality Assurance **Standard Testing:** - Chemical analysis certification - Tensile testing per ASTM E8 - Hardness testing per ASTM E18 - Surface quality inspection - Dimensional verification **Additional Testing Available:** - Ultrasonic examination - Flattening test for formability - High-temperature tensile testing - Oxidation resistance testing - Microstructural evaluation --- ### 10. Technical Advantages - **Excellent high-temperature strength** up to 980°C - **Outstanding oxidation resistance** in cyclic conditions - **Good thermal stability** and thermal fatigue resistance - **Good fabricability** for complex components - **Maintains mechanical properties** after long-term exposure - **Excellent surface finish** capabilities --- ### 11. Special Considerations **High-Temperature Service:** - Maximum continuous service: 980°C (1800°F) - Consider thermal expansion in design - Proper support for thermal cycling applications **Material Handling:** - Protect from surface scratches and damage - Store flat with proper support - Handle with clean gloves to prevent contamination --- **Note:** Multimet N155 Sheet offers excellent performance for high-temperature applications where oxidation resistance and elevated temperature strength are required in thin sections. The material demonstrates good fabricability and can be readily formed and welded into complex components. Consult with our technical team for specific application recommendations and fabrication guidance.

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 2293 gallon liquid totes Special package is available on request.