Multimet N155,Multimet Rod,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 Rod / UNS R30155 **Iron-Nickel-Chromium-Cobalt Superalloy Rod Product** --- ### 1. Product Overview **Multimet N155 Rod** (UNS R30155) is supplied in rod form from the iron-nickel-chromium-cobalt superalloy family, designed for high-temperature service up to **980°C (1800°F)**. This product combines excellent high-temperature strength, outstanding oxidation resistance, and good machinability, making it ideal for manufacturing critical components in gas turbines, heat treatment equipment, and other high-temperature applications. --- ### 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 - **Reduction of Area**: 45% 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 **Rod Size Range:** - **Diameter**: 3 mm to 200 mm (0.125" to 8") - **Length**: Random lengths 3-4 meters, cut lengths available - **Tolerance**: h9 standard, special tolerances available **Available Conditions:** - **Solution Annealed**: Optimal for machining - **Hot Finished**: As-forged condition - **Centerless Ground**: Precision applications **Surface Finish:** - Black finish - Ground finish - Peeled finish - Polished finish (special order) --- ### 6. Applications **Aerospace Components:** - Gas turbine blades and vanes - Combustion chamber components - Afterburner parts - Exhaust system components **Industrial Equipment:** - Heat treatment fixture parts - Furnace roll journals and shafts - Kiln components - Heat exchanger parts **Power Generation:** - Gas turbine components - Boiler parts - High-temperature fasteners - Valve components **Chemical Processing:** - Reactor components - High-temperature valves - Process equipment parts - Catalyst support components --- ### 7. International Standards | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | R30155 | Material designation | | **ASTM** | B572 | Rod and Bar Specification | | **AMS** | 5768 | Bar and Forgings | | **ASME** | SB-572 | Nuclear Applications | --- ### 8. Machining & Fabrication **Machining Guidelines:** - **Tool Material**: Carbide recommended - **Cutting Speed**: 15–25 m/min for turning - **Feed Rate**: 0.15–0.30 mm/rev - **Coolant**: Heavy-duty soluble oil required - **Tool Geometry**: Positive rake angles preferred **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 **Welding Characteristics:** - **Excellent Weldability**: GTAW, GMAW processes - **Filler Metal**: Matching composition recommended - **Preheat**: 200–300°C (400–600°F) - **Post-Weld Heat Treatment**: Recommended --- ### 9. Quality Assurance **Standard Testing:** - Chemical analysis by optical emission spectroscopy - Tensile testing at room temperature - Hardness testing - Macro-etch testing for soundness **Additional Testing Available:** - Ultrasonic examination per ASTM A388 - Elevated temperature tensile testing - Stress rupture testing - Microstructural evaluation --- ### 10. Technical Advantages - **Excellent high-temperature strength** up to 980°C - **Outstanding oxidation resistance** in air and combustion atmospheres - **Good thermal fatigue resistance** - **Excellent fabricability** and machinability - **Good weldability** with proper procedures - **Maintains structural stability** at elevated temperatures - **Proven performance** in demanding applications --- ### 11. Special Considerations **High-Temperature Service:** - Maximum continuous service: 980°C (1800°F) - Intermittent service: up to 1040°C (1900°F) - Consider thermal expansion in design - Proper support for thermal cycling applications **Corrosion Performance:** - **Excellent oxidation resistance** - **Good carburization resistance** - **Resistant to sulfur-containing atmospheres** - **Suitable for cyclic temperature conditions** --- **Note:** Multimet N155 Rod offers excellent performance for high-temperature component manufacturing where oxidation resistance and elevated temperature strength are required. The material demonstrates good machinability and can be readily fabricated into complex components. Consult with our technical team for specific machining recommendations and application 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 2288 gallon liquid totes Special package is available on request.