Multimet N155,Multimet Plate,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 Plate / UNS R30155 **Iron-Nickel-Chromium-Cobalt Superalloy Plate Product** --- ### 1. Product Overview **Multimet N155 Plate** (UNS R30155) is supplied in plate form from the iron-nickel-chromium-cobalt superalloy family, designed for high-temperature structural applications requiring excellent strength and oxidation resistance up to **980°C (1800°F)**. This product offers outstanding high-temperature mechanical properties combined with good fabricability, making it ideal for fabricating large components 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 **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 **Plate Size Range:** - **Thickness**: 5 mm to 100 mm (0.187" to 4") - **Width**: 1000 mm to 2000 mm (39" to 79") - **Length**: 2000 mm to 6000 mm (79" to 236") **Available Conditions:** - **Hot Rolled**: As-rolled condition - **Solution Annealed**: Optimal for fabrication - **Stress Relieved**: For dimensional stability - **Surface Finished**: Pickled, ground, or mill finished **Tolerance Standards:** - **Thickness Tolerance**: ±5% standard, ±3% special - **Flatness**: 5 mm/m maximum - **Shearing Tolerance**: ±2 mm --- ### 6. Applications **Aerospace & Defense:** - Combustion chamber liners - Afterburner components - Exhaust system ducting - Engine mounting plates **Industrial Processing:** - Heat treatment furnace components - Radiant heater panels - Chemical reactor liners - Pyroprocessing equipment **Power Generation:** - Gas turbine casings - Heat recovery system ducting - Boiler component panels - Nuclear reactor internal components **Special Applications:** - Hot forming dies and tools - High-temperature fixture plates - Thermal processing equipment bases --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30155 | Material designation | | **ASTM** | B435 | Plate, Sheet, and Strip | | **AMS** | 5768 | Bar and forgings (plate applications) | | **ASME** | SB-435 | Boiler and Pressure Vessel Code | --- ### 8. Fabrication & Processing **Cutting & Machining:** - **Plasma Cutting**: Recommended for thick plates - **Water Jet Cutting**: Suitable for complex shapes - **Machining Parameters**: Use positive rake carbide tools - **Cutting Speeds**: 15–20 m/min for milling operations **Forming Operations:** - **Hot Forming**: 1150–1200°C (2100–2200°F) - **Cold Forming**: Good in annealed condition - **Minimum Bend Radius**: 3T for 90° bends - **Springback Allowance**: 10–15% **Welding Procedures:** - **Processes**: GTAW, GMAW, SMAW - **Filler Metal**: AWS A5.14 ERNiCrCoMo-1 or matching composition - **Preheat**: 200–300°C (400–600°F) recommended - **Post-Weld Heat Treatment**: Solution anneal recommended --- ### 9. Quality Assurance **Standard Testing:** - Ultrasonic testing per ASTM A578 - Tensile testing per ASTM E8 - Hardness testing per ASTM E18 - Chemical analysis certification **Additional Testing Available:** - Macro-etch examination - Charpy impact testing - High-temperature tensile testing - Stress rupture testing --- ### 10. Technical Advantages - **Excellent high-temperature strength** up to 980°C - **Outstanding oxidation resistance** in air and combustion atmospheres - **Good thermal fatigue resistance** - **Excellent structural stability** under thermal cycling - **Good fabricability and weldability** - **Maintains mechanical properties** at elevated temperatures - **Proven performance** in demanding applications --- ### 11. Special Considerations **High-Temperature Service:** - Maximum continuous service: 980°C (1800°F) - Consider thermal expansion in design - Proper support for thermal cycling applications - Allow for adequate expansion clearance **Corrosion Performance:** - **Excellent oxidation resistance** - **Good carburization resistance** - **Resistant to sulfur-containing atmospheres** - **Suitable for cyclic temperature conditions** --- **Note:** Multimet N155 Plate offers excellent performance for high-temperature structural applications where oxidation resistance and elevated temperature strength are required. 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 2292 gallon liquid totes Special package is available on request.