Aperam Resistohm 80 Resistant Alloys-Nickel Chromium Alloys，1

### **Product Introduction: Aperam Resistohm® 80 - Nickel-Chromium Resistance Alloy** **Overview** Aperam Resistohm® 80 is a premium nickel-chromium electrical resistance alloy specifically engineered for high-temperature heating applications. This alloy demonstrates exceptional resistance stability, excellent oxidation resistance, and prolonged service life at elevated temperatures up to 1200°C (2192°F). With its balanced composition and reliable performance, Resistohm 80 serves as an ideal material for heating elements in industrial furnaces, household appliances, and various thermal processing equipment. --- #### **Chemical Composition (Typical % by Weight)** | Element | Content (%) | Role & Benefit | |---------|-------------|---------------| | **Nickel (Ni)** | 78.0 - 80.0 | Primary matrix element providing base resistivity and high-temperature strength | | **Chromium (Cr)** | 19.0 - 21.0 | Imparts oxidation resistance and forms protective chromium oxide scale | | **Iron (Fe)** | ≤ 1.0 | Controlled residual element | | **Silicon (Si)** | 0.75 - 1.50 | Enhances oxidation resistance and scale adhesion | | **Manganese (Mn)** | 0.50 - 1.50 | Improves hot workability and manufacturability | | **Carbon (C)** | ≤ 0.08 | Controlled for optimal high-temperature performance | | **Aluminum (Al)** | ≤ 0.50 | Contributes to oxidation resistance | | **Copper (Cu)** | ≤ 0.50 | Residual element control | | **Sulfur (S)** | ≤ 0.007 | Minimized to prevent hot shortness | *Note: Resistohm is a registered trademark of Aperam. This alloy corresponds to NiCr 80/20 resistance heating alloy.* --- #### **Physical & Mechanical Properties** **Physical Properties:** - Density: 8.40 g/cm³ (0.303 lb/in³) - Melting Range: 1400-1420°C (2552-2588°F) - Thermal Expansion: 13.5 μm/m·°C @ 20-1000°C - Thermal Conductivity: 15.0 W/m·K @ 20°C - Specific Heat Capacity: 460 J/kg·K @ 20°C - Electrical Resistivity: 1.09 μΩ·m at 20°C **Mechanical Properties (Room Temperature):** - Tensile Strength: 780-950 MPa (113-138 ksi) - Yield Strength (0.2% Offset): 450-620 MPa (65-90 ksi) - Elongation: 20-35% - Hardness: HV 180-220 **High-Temperature Characteristics:** - Maximum Operating Temperature: 1200°C (2192°F) - Excellent resistance to cyclic heating and cooling - Stable electrical resistance over prolonged service life - Good resistance to sagging at operating temperatures --- #### **International Standards and Specifications** - **IEC 60240:** Dimensions and technical requirements for electric heating elements - **ASTM B344:** Electrical Heating Element Alloys - **DIN 17470:** Electrical resistance alloys - Technical delivery conditions - **EN 10095:** Heat resisting steels and nickel alloys - **JIS C2520:** Nickel-chromium and nickel-chromium-iron alloys for electrical heating - **UL Standard:** Component recognition for heating elements --- #### **Product Applications** **Industrial Heating Applications:** - Industrial furnace heating elements - Heat treatment furnace components - Ceramic kiln heating systems - Glass manufacturing equipment - High-temperature laboratory furnaces **Consumer Appliances:** - Electric oven heating elements - Toaster and grill heating wires - Hair dryer heating components - Water heater elements - Industrial and domestic heating appliances **Specialized Applications:** - Aerospace heating components - Automotive glow plugs - Temperature sensors and thermocouples - Electrical resistors and rheostats - High-temperature ignition systems --- #### **Key Advantages** 1. **Excellent Oxidation Resistance**: Superior performance in air at high temperatures up to 1200°C 2. **Stable Electrical Resistance**: Minimal resistance drift during prolonged service life 3. **High-Temperature Strength**: Maintains mechanical integrity at elevated temperatures 4. **Good Thermal Cycling Resistance**: Withstands repeated heating and cooling cycles 5. **Rapid Heat Up and Cool Down**: Efficient thermal response characteristics 6. **Long Service Life**: Proven durability in demanding applications 7. **Good Formability**: Can be readily coiled, bent, and formed into complex shapes 8. **Consistent Performance**: Reliable operation across varied environmental conditions --- **Conclusion** Aperam Resistohm® 80 represents a high-performance nickel-chromium resistance heating alloy that delivers exceptional reliability and longevity in high-temperature electrical heating applications. Its optimized chemical composition ensures stable electrical characteristics, excellent oxidation resistance, and prolonged service life, making it the material of choice for demanding heating elements across industrial, commercial, and consumer applications. Supported by comprehensive international standards and rigorous quality control, Resistohm 80 continues to set the benchmark for performance and reliability in electrical resistance heating technology, providing consistent and efficient thermal solutions for diverse industrial and domestic heating requirements.

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 3426 gallon liquid totes Special package is available on request.