Cr15Ni60 Electrical Resistance Alloy
Cr15Ni60 is an electrical resistance alloy composed of approximately 15% chromium and 60% nickel, with the balance mainly iron. Known for its moderate electrical resistivity and excellent oxidation resistance, Cr15Ni60 performs well in applications that require stable resistance at high temperatures, up to around 1150°C. This alloy is commonly used in heating elements for industrial furnaces, electrical appliances, and resistors where reliable performance under thermal stress is essential. Its combination of good mechanical strength and thermal stability makes Cr15Ni60 suitable for various high-temperature resistance applications.
Standard Dimensions of Cr15Ni60 Electrical Resistance Alloy in Various Forms
| Form | Thickness | Width | Diameter | Length |
|---|---|---|---|---|
| Cr15Ni60 Electrical Resistance Alloy Wire | – | – | 0.1 mm – 10 mm | Custom lengths |
| Cr15Ni60 Electrical Resistance Alloy Strip | 0.05 mm – 2.5 mm | 5 mm – 200 mm | – | Custom lengths |
| Cr15Ni60 Electrical Resistance Alloy Sheet | 0.5 mm – 3 mm | Up to 1000 mm | – | Custom sizes available |
| Cr15Ni60 Electrical Resistance Alloy Rod | – | – | 3 mm – 100 mm | Custom lengths |
| Cr15Ni60 Electrical Resistance Alloy Ribbon | 0.02 mm – 0.1 mm | 0.5 mm – 5 mm | – | Custom lengths |
Chemical composition of Cr15Ni60 Electrical Resistance Alloy
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 14.0 – 16.0 |
| Nickel (Ni) | 58.0 – 61.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.1 |
Corresponding and Similar Grades to Cr15Ni60 Electrical Resistance Alloy
| Standard / Manufacturer | Grade | Country / Region |
|---|---|---|
| ASTM | UNS N06003 | USA |
| DIN | 1.4860 | Germany |
| JIS | NCF15-60 | Japan |
| GB | Cr15Ni60 | China |
| Kanthal | Nikrothal® 60 | Sweden |
| Isabellenhütte | Isa-Ohm® 100 | Germany |
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Physical Properties of Cr15Ni60 Electrical Resistance Alloy
| Property | Value | Units |
|---|---|---|
| Density | 8.2 | g/cm³ |
| Melting Point | 1350 – 1400 | °C |
| Electrical Resistivity | 1.12 | µΩ·m |
| Thermal Conductivity | 15 | W/m·K |
| Coefficient of Thermal Expansion | 15 | µm/m·°C (20–1000°C) |
| Specific Heat Capacity | 460 | J/kg·K |
| Maximum Operating Temperature | 1150 | °C |
Mechanical Properties of Cr15Ni60 Electrical Resistance Alloy
| Property | Value | Units |
|---|---|---|
| Tensile Strength | 650 – 750 | MPa |
| Yield Strength | 300 | MPa |
| Elongation | 25 – 35 | % |
| Hardness (Rockwell B) | 85 – 95 | HRB |
| Modulus of Elasticity | 190 | GPa |
| Creep Strength (at 1000°C) | 10 | MPa |
Applications of Cr15Ni60 Electrical Resistance Alloy
1. Heating Elements in Industrial Furnaces
Cr15Ni60 is a preferred material for heating elements in industrial furnaces that operate at temperatures up to 1150°C. Its high electrical resistivity and thermal stability ensure efficient and consistent heating, while its resistance to oxidation allows for prolonged use in harsh, high-temperature environments without significant degradation. This alloy is especially beneficial for applications in the metalworking, glass, and ceramic industries, where heating elements need to maintain performance under continuous high heat.
2. Domestic Heating Appliances
The alloy is commonly used in heating elements for domestic appliances, such as ovens, toasters, and hair dryers. Cr15Ni60’s ability to provide stable resistance at elevated temperatures makes it ideal for appliances requiring reliable heating over extended periods. Its balance of chromium and nickel content enables it to maintain performance without rapid wear, distinguishing it from other lower-grade alloys that may degrade faster in similar conditions.
3. Resistors and Rheostats
Cr15Ni60 is employed in the manufacture of precision resistors and rheostats, which are components used to control electrical current in circuits. The alloy’s stable electrical resistivity, even under fluctuating temperatures, ensures that resistors and rheostats maintain consistent performance. This is particularly important in precision electronic devices and industrial equipment, where minor deviations in resistance can lead to inaccuracies or inefficiencies.
4. Automotive Heating Components
In the automotive industry, Cr15Ni60 is used in components exposed to high heat, such as exhaust system heating elements and seat warmers. The alloy’s robust performance at elevated temperatures and excellent oxidation resistance make it suitable for automotive environments where temperature fluctuations and exposure to moisture and chemicals are common. Its durability in these conditions ensures longevity and reduces maintenance needs.
5. Aerospace Components
Aerospace applications demand materials that can withstand extreme temperatures and stress. Cr15Ni60 is used in heating elements and resistive components within aerospace systems, where its resistance to high temperatures and thermal cycling is crucial. Its consistent electrical resistance and mechanical stability make it ideal for applications in jet engines, turbines, and other aerospace equipment that require high reliability.
6. Scientific and Laboratory Equipment
Cr15Ni60 is also utilized in laboratory equipment that requires precise temperature control, such as high-temperature furnaces, thermocouples, and heating mantles. Its stable resistivity and oxidation resistance are critical for maintaining accuracy and repeatability in experimental settings, where consistent heating is essential for reliable results. The alloy’s durability ensures it performs well in these environments without frequent replacement.
7. Petrochemical Processing
The alloy’s high oxidation and corrosion resistance make it suitable for heating elements in the petrochemical industry, where equipment is exposed to corrosive gases and high temperatures. Cr15Ni60 performs well in harsh processing environments, contributing to the efficient and safe operation of heat exchangers, reactors, and other petrochemical processing equipment.
Key Advantages of Cr15Ni60 for These Applications
Thermal Stability: Cr15Ni60 maintains consistent performance at high temperatures, which is crucial in industrial, automotive, and aerospace heating applications.
Oxidation and Corrosion Resistance: The alloy’s chromium and nickel composition provides excellent resistance to oxidation and corrosion, enabling it to withstand prolonged exposure to high heat and oxidative environments.
Reliable Electrical Resistivity: Cr15Ni60 offers stable resistivity across a range of temperatures, making it ideal for precision resistors and heating elements that demand uniform performance.
Mechanical Durability: Its mechanical strength and resistance to deformation at elevated temperatures reduce the need for frequent replacements, enhancing its cost-effectiveness in high-stress applications.
