Multimet N155,Multimet Wire,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 Wire / UNS R30155 **Iron-Nickel-Chromium-Cobalt Superalloy Wire Product** --- ### 1. Product Overview **Multimet N155 Wire** (UNS R30155) is manufactured from the iron-nickel-chromium-cobalt superalloy in wire form, designed for high-temperature applications requiring excellent strength and oxidation resistance up to **980°C (1800°F)**. This product offers outstanding mechanical properties and good fabricability, making it ideal for fasteners, springs, and critical components operating in extreme environments across aerospace, power generation, and industrial sectors. --- ### 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 **Solution Annealed Condition:** - **Tensile Strength**: 750–900 MPa (109–131 ksi) - **Yield Strength (0.2% Offset)**: 400–550 MPa (58–80 ksi) - **Elongation**: 35–45% - **Reduction of Area**: 40–50% - **Hardness**: 90–95 HRB **Cold Worked Condition:** - **Tensile Strength**: 1000–1200 MPa (145–174 ksi) - **Yield Strength (0.2% Offset)**: 850–1000 MPa (123–145 ksi) - **Elongation**: 15–25% - **Hardness**: 25–35 HRC **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 **Wire Size Range:** - **Diameter**: 0.1 mm to 6.0 mm (0.004" to 0.236") - **Tolerance**: ±0.005 mm for fine wire, ±0.02 mm for heavy wire - **Spool Sizes**: 1 kg to 25 kg standard **Available Forms:** - **Bright Finish**: Smooth, oxide-free surface - **Pickled Finish**: Matte surface for improved adhesion - **Coated Variants**: Special coatings available **Packaging Options:** - Plastic or wooden spools - Protective coil packaging - Straight lengths (1-3 meters) --- ### 6. Applications **Fastener Manufacturing:** - High-temperature aerospace fasteners - Industrial heat-resistant bolts - Specialized threaded components - High-strength rivets **Spring Applications:** - Aircraft engine springs - High-temperature valve springs - Instrumentation springs - Industrial machinery springs **Welding & Fabrication:** - Welding wire for similar alloys - Cladding and hardfacing applications - Component repair and maintenance - Fabrication of high-temperature structures **Specialized Applications:** - Heating element supports - Electrical resistance wire - Filter mesh components - Chemical processing components --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30155 | Material designation | | **ASTM** | B572 | Rod and Bar (wire applications) | | **AMS** | 5768 | Bar and forgings (wire applications) | | **AWS** | A5.14 | Welding Electrode and Rod Specification | --- ### 8. Fabrication Characteristics **Forming & Processing:** - **Cold Forming**: Good in annealed condition - **Springback**: Predictable and consistent - **Wire Drawing**: Requires intermediate annealing - **Heat Treatment**: Essential for optimal properties **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 **Surface Preparation:** - **Cleaning**: Essential before heat treatment - **Pickling**: For oxide removal - **Coating**: Special coatings for specific applications --- ### 9. Quality Assurance **Standard Testing:** - Dimensional verification - Surface quality inspection - Tensile testing by lot - Hardness testing - Chemical analysis certification **Special Testing Available:** - Fatigue testing for spring applications - Stress rupture testing - Microstructural examination - Corrosion resistance testing --- ### 10. Technical Advantages - **Excellent high-temperature strength** up to 980°C - **Outstanding oxidation resistance** in harsh environments - **Good fatigue performance** in spring applications - **Good fabricability** and formability - **Maintains mechanical properties** at elevated temperatures - **Reliable performance** in critical applications - **Good weldability** with proper procedures --- ### 11. Special Considerations **Wire Drawing:** - Multiple passes with intermediate annealing - Proper die design essential - Adequate lubrication required - Controlled reduction per pass **Spring Manufacturing:** - Form in solution-treated condition - Consider springback in design - Proper heat treatment essential for optimal properties **High-Temperature Service:** - Maximum continuous service: 980°C (1800°F) - Consider thermal expansion in design - Proper material selection for specific temperature ranges --- **Note:** Multimet N155 Wire offers excellent performance for high-temperature applications where oxidation resistance and elevated temperature strength are required. The material requires proper processing and heat treatment to achieve optimal mechanical properties. Custom sizes, special tempers, and specific packaging requirements are available upon request. Consult with our technical team for application-specific recommendations and processing 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 2299 gallon liquid totes Special package is available on request.