Multimet N155,Multimet Other/Similar Specs,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 & Similar Specifications / UNS R30155 **Iron-Nickel-Chromium-Cobalt Superalloy - Comprehensive Specifications** --- ### 1. Product Overview **Multimet N155** (UNS R30155) and its equivalent specifications represent a family of iron-nickel-chromium-cobalt superalloys designed for high-temperature service up to **980°C (1800°F)**. These materials combine excellent high-temperature strength, outstanding oxidation resistance, and good fabricability, making them suitable for gas turbine components, heat treatment equipment, and other demanding high-temperature applications. --- ### 2. Chemical Composition (Weight %) Comparison | Element | UNS R30155 | AMS 5768 | ASTM B435 | Similar Alloys | |---------|-------------|----------|-----------|----------------| | Iron | Balance | Balance | Balance | Balance | | Chromium | 20.0-22.0 | 20.0-22.0 | 20.0-22.0 | 19.0-21.0 (N155) | | Nickel | 19.0-21.0 | 19.0-21.0 | 19.0-21.0 | 19.0-21.0 (N155) | | Cobalt | 18.0-20.0 | 18.0-20.0 | 18.0-20.0 | 17.0-20.0 (N155) | | Tungsten | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 1.5-2.5 (N155) | | Molybdenum | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 (N155) | | Niobium | 0.75-1.25 | 0.75-1.25 | 0.75-1.25 | 0.75-1.25 (N155) | | Carbon | 0.05-0.10 | 0.05-0.10 | 0.05-0.10 | 0.05-0.10 (N155) | --- ### 3. Physical Properties | Property | Value | |----------|-------| | **Density** | 8.23 g/cm³ | | **Melting Range** | 1370-1425°C | | **Thermal Conductivity** | 14.2 W/m·K at 100°C | | **Coefficient of Thermal Expansion** | 14.5 μm/m·°C (20-100°C) | | **Electrical Resistivity** | 1.05 μΩ·m | | **Magnetic Permeability** | Essentially non-magnetic | --- ### 4. Mechanical Properties Comparison **Room Temperature Properties (Solution Annealed):** | Specification | Tensile Strength (min) | Yield Strength (min) | Elongation (min) | |---------------|-----------------------|---------------------|-----------------| | UNS R30155 | 790 MPa | 415 MPa | 35% | | AMS 5768 | 790 MPa | 415 MPa | 35% | | ASTM B435 | 790 MPa | 415 MPa | 35% | **Elevated Temperature Performance:** - Stress Rupture: 100 MPa at 815°C/100h (all specifications) - Creep Strength: Excellent up to 980°C - Maximum Service Temperature: 980°C continuous --- ### 5. International Standards & Equivalents **North America:** - UNS R30155 - AMS 5768 (Bar, forgings, ring) - ASTM B435 (Sheet, plate, strip) - ASTM B572 (Rod, bar) **Europe:** - DIN 2.4969 (German designation) - BS HR 13 (British designation) **Global Equivalents:** - Multimet N155 (Commercial name) - N155 (Common abbreviation) - Special Quality Grades --- ### 6. Product Forms & Specifications **Wrought Products:** - Bar & Rod: AMS 5768, ASTM B572 - Sheet & Plate: ASTM B435 - Forgings: AMS 5768 - Tube & Pipe: ASTM B622, B619 **Finished Components:** - Gas turbine parts - Heat treatment fixtures - High-temperature fasteners - Chemical processing equipment --- ### 7. Applications by Industry **Aerospace:** - Gas turbine combustion chambers - Afterburner components - Exhaust system parts - Turbine seals and shrouds **Power Generation:** - Gas turbine hot section components - Heat exchanger tubing - Boiler components - Steam turbine parts **Industrial Processing:** - Heat treatment fixtures - Chemical processing equipment - Furnace components - High-temperature fasteners --- ### 8. Equivalent & Similar Alloys **Direct Equivalents:** - Multimet N155 (Commercial name) - UNS R30155 (Unified Numbering System) - AMS 5768 (Aerospace Material Specification) **Similar Performance Alloys:** - **Inconel 617**: Nickel-based alternative - **Haynes 230**: Higher temperature capability - **Nimonic 263**: Cobalt-containing alternative - **A-286**: Iron-nickel superalloy --- ### 9. Quality & Certification **Standard Certifications:** - Mill Test Certificate EN 10204 3.1/3.2 - AMS 5768 Compliance - ISO 9001:2015 Quality Systems - NADCAP Accredited Testing **Testing Standards:** - Chemical Analysis: ASTM E1473 - Mechanical Testing: ASTM E8/E21 - Non-destructive Testing: per applicable specifications --- ### 10. Technical Advantages Across Specifications - **Excellent high-temperature strength** up to 980°C - **Outstanding oxidation resistance** - **Good thermal fatigue resistance** - **Excellent fabricability and weldability** - **Good structural stability** at elevated temperatures - **Proven performance** in demanding applications --- ### 11. Special Notes - All specifications maintain consistent chemical composition requirements - Heat treatment requirements are identical across specifications - Minor variations in mechanical property requirements may exist - All grades are considered essentially equivalent for most applications --- **Note:** While all listed specifications are considered equivalent, specific application requirements may dictate the use of particular standards. Aerospace applications typically require AMS 5768 compliance, while general industrial applications may use ASTM specifications. Consult with our technical team for guidance on specification selection for your specific application needs.

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 2297 gallon liquid totes Special package is available on request.