Aperam Resistohm 60 Resistant Alloys-Nickel Chromium Alloys，1

### **Product Introduction: Aperam Resistohm® 60 - Nickel-Chromium Resistance Alloy** **Overview** Aperam Resistohm® 60 is a nickel-chromium-iron electrical resistance alloy engineered for medium-temperature heating applications. This cost-effective alloy provides reliable performance with good oxidation resistance and stable electrical characteristics at operating temperatures up to 1100°C (2012°F). Its balanced composition makes it suitable for a wide range of heating elements in industrial, commercial, and domestic applications where consistent performance and economic efficiency are paramount. --- #### **Chemical Composition (Typical % by Weight)** | Element | Content (%) | Role & Benefit | |---------|-------------|---------------| | **Nickel (Ni)** | 58.0 - 61.0 | Provides base resistivity and high-temperature stability | | **Chromium (Cr)** | 15.0 - 18.0 | Enhances oxidation resistance through protective oxide layer formation | | **Iron (Fe)** | 20.0 - 24.0 | Cost-effective matrix element providing structural integrity | | **Silicon (Si)** | 0.50 - 1.50 | Improves oxidation resistance and scale adhesion properties | | **Manganese (Mn)** | 1.00 - 2.00 | Enhances hot workability and manufacturing characteristics | | **Carbon (C)** | ≤ 0.10 | Controlled for optimal high-temperature performance | | **Aluminum (Al)** | ≤ 0.50 | Contributes to oxidation resistance | | **Copper (Cu)** | ≤ 0.50 | Residual element control | | **Sulfur (S)** | ≤ 0.015 | Minimized to prevent hot shortness | *Note: Resistohm is a registered trademark of Aperam. This alloy corresponds to NiCr 60/15 resistance heating alloy with iron addition.* --- #### **Physical & Mechanical Properties** **Physical Properties:** - Density: 8.20 g/cm³ (0.296 lb/in³) - Melting Range: 1350-1400°C (2462-2552°F) - Thermal Expansion: 14.2 μm/m·°C @ 20-800°C - Thermal Conductivity: 15.2 W/m·K @ 20°C - Specific Heat Capacity: 460 J/kg·K @ 20°C - Electrical Resistivity: 1.12 μΩ·m at 20°C **Mechanical Properties (Room Temperature):** - Tensile Strength: 700-850 MPa (102-123 ksi) - Yield Strength (0.2% Offset): 350-500 MPa (51-73 ksi) - Elongation: 30-45% - Hardness: HV 160-200 **High-Temperature Characteristics:** - Maximum Operating Temperature: 1100°C (2012°F) - Good resistance to thermal cycling - Stable electrical resistance up to maximum operating temperature - Moderate high-temperature creep resistance --- #### **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 - **GB/T 1234:** Chinese standard for high resistance alloys - **UL 1030:** Heating, Cooling, and Fan-Grid Heating Elements Standard --- #### **Product Applications** **Industrial Heating Applications:** - Industrial furnace heating elements - Heat treatment equipment components - Drying oven heating systems - Ceramic and glass processing equipment - Industrial air heating systems **Commercial and Domestic Equipment:** - Electric range and oven elements - Water heater heating elements - Space heating appliances - Toaster and grilling elements - Commercial food warming equipment **Electrical and Special Applications:** - Power resistors and current limiting devices - Temperature control elements - Electrical heating cables - Automotive heating components - Appliance control systems --- #### **Key Advantages** 1. **Good Oxidation Resistance**: Reliable performance in air at temperatures up to 1100°C 2. **Cost-Effective Solution**: Optimal balance between performance and economics 3. **Stable Electrical Resistance**: Consistent resistivity throughout service life 4. **Good Thermal Cycling Resistance**: Adequate performance under repeated heating cycles 5. **Excellent Formability**: Easy to process, coil, and form into various shapes 6. **Wide Application Range**: Suitable for diverse heating applications 7. **Proven Reliability**: Established performance in commercial and industrial applications 8. **Good Mechanical Properties**: Adequate strength for most heating element applications --- **Conclusion** Aperam Resistohm® 60 represents an economical and reliable nickel-chromium-iron resistance heating alloy that delivers consistent performance in medium-temperature electrical heating applications. Its carefully balanced composition provides an optimal combination of electrical resistance, oxidation resistance, and mechanical properties, making it particularly suitable for cost-sensitive applications without compromising on performance and reliability. Supported by international standards and comprehensive quality control, Resistohm 60 offers heating element manufacturers a versatile and economically viable solution for a broad spectrum of industrial, commercial, and domestic heating requirements. The alloy's proven track record and wide applicability make it an excellent choice for applications demanding consistent thermal performance and long service life under moderate temperature conditions.

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 3428 gallon liquid totes Special package is available on request.