Factory Price 24 32 36 40 AWG Nichrome Alloy NiCr 80/20 Resistohm
80 Resistance Wire For Heating Elements
Cr20Ni80 is a premier nickel-chromium alloy wire that has
established itself as a leading choice in industrial applications
due to its exceptional corrosion resistance and outstanding
mechanical properties. Comprising approximately 20% chromium and
80% nickel, this alloy composition grants it remarkable
versatility, allowing it to excel in a wide range of demanding
industrial environments.
The high chromium content in Cr20Ni80 provides unparalleled
protection against corrosion, enabling the alloy to withstand
exposure to aggressive media such as acids, alkalis, and saline
solutions with ease. This makes the alloy an indispensable material
for equipment and components used in the chemical, petrochemical,
and marine industries, where reliable long-term performance is
paramount.
Complementing its corrosion resistance, the Cr20Ni80 alloy also
boasts exceptional mechanical strength, hardness, and wear
resistance. These robust physical attributes allow it to maintain
structural integrity and function reliably even under high-stress,
high-temperature, or high-friction conditions. As a result,
Cr20Ni80 is widely specified for critical parts and assemblies in a
diverse array of industrial machinery and equipment.
What is the key features of nichrome wire?
1. Corrosion Resistance:
The high chromium content in the CR20NI80 alloy forms a protective
oxide layer on the surface, providing excellent resistance to
corrosion, even in harsh environments.
This characteristic ensures the longevity and reliability of
components made from this alloy, minimizing the need for frequent
replacements.
2. Mechanical Strength:
The CR20NI80 alloy exhibits impressive mechanical strength and
tensile properties, making it suitable for applications that
require high-performance and durable materials.
This strength is maintained even at elevated temperatures, making
the alloy wire a reliable choice for use in high-temperature
environments.
3. Thermal Stability:
The CR20NI80 alloy is capable of withstanding temperatures up to
1100°C (2012°F) without significant degradation of its properties.
This thermal stability ensures the reliability and consistent
performance of components made from this alloy wire, even in
demanding thermal applications.
4. Electrical Resistance:
The CR20NI80 alloy wire has a high electrical resistance, making it
suitable for use as resistance heating elements in various
electrical and electronic devices.
This property, combined with the alloy's thermal stability, allows
for precise temperature control and efficient heat generation.
5. Versatility:
The CR20NI80 alloy wire can be manufactured in a wide range of
diameters and configurations to meet the specific requirements of
different applications.
This versatility makes the alloy wire a popular choice across
various industries, including aerospace, chemical processing, and
power generation.
| 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 |
