Bright Soft Nichrome Alloy Cr20Ni80 Cr15Ni60 Electric Resistance
Wire For Furnace Heating
Cr20Ni80 is a high-performance nickel-chromium alloy wire known for
its exceptional corrosion resistance and excellent mechanical
properties.
The alloy composition of approximately 20% chromium and 80% nickel
makes it highly resistant to a wide range of corrosive
environments, including acids, alkalis, and saline solutions.
Cr20Ni80 also exhibits outstanding strength, hardness, and wear
resistance, allowing it to maintain structural integrity and
function reliably even under high-stress, high-temperature, or
high-friction conditions.
This versatile alloy wire is widely used in industries such as
chemical processing, petrochemical, marine, and aerospace, where
corrosion resistance and mechanical durability are critical.
Cr15Ni60 is another nickel-chromium alloy wire with a slightly
different composition compared to Cr20Ni80.
The alloy contains around 15% chromium and 60% nickel, which
provides good corrosion resistance and mechanical properties,
albeit not at the same level as the Cr20Ni80 alloy.
Cr15Ni60 is often used in applications where the requirements for
corrosion resistance and mechanical performance are not as
demanding as those for Cr20Ni80.
This alloy wire may be more cost-effective than Cr20Ni80 in certain
applications and is commonly used in heating elements, furnace
parts, and other industrial equipment.
Both Cr20Ni80 and Cr15Ni60 nickel-chromium alloy wires offer
valuable properties for a wide range of industrial applications,
with the specific choice depending on the required level of
corrosion resistance, mechanical strength, and cost considerations.
| Performance material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 |
| Composición | Ni | 90 | Rest | Rest | 55.0～61.0 | 34.0～37.0 | 30.0～34.0 |
| Cr | 10 | 20.0～23.0 | 28.0～31.0 | 15.0～18.0 | 18.0～21.0 | 18.0～21.0 |
| Fe | － | ≤1.0 | ≤1.0 | Rest | Rest | Rest |
| Max. temperature( °C ) | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 |
| Melting Point ℃ | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 |
| Density(g/cm3) | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 |
| Resistivity at 20ºC(μΩ@m) | 0.76±0.05 | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 |
| Elongation at rupture(%) | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 |
| Specific Heat J/g.℃ | － | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 |
| Thermal conductivity KJ/m.h℃ | － | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 |
| Coefficient of lines expansion a×10-6/(20～1000℃) | － | 18 | 17 | 17 | 19 | 19 |
| Micrographic structure | － | Austenite | Austenite | Austenite | Austenite | Austenite |
| Magnetic properties | － | Nonmagnetic | Nonmagnetic | Nonmagnetic | Weak magnetic | Weak magnetic |
