Ni80Cr20 Cr20Ni80 Nichrome 80/20 Seamless Tube High Temperature Oxidation Resistant Alloy Pipe
Ni80Cr20 (Cr20Ni80 / Nichrome 80/20) tube is a premium nickel‑chromium alloy with about 80% Ni + 20% Cr, featuring high temperature resistance, high resistivity, excellent oxidation/corrosion resistance, and good mechanical strength. It is widely used for furnace heating tubes, electric heaters, thermocouple protection sheaths, high‑temperature piping, and heat exchangers. Our tubes are available in seamless / welded types, various OD & wall thickness, soft / half‑hard temper. Custom sizes and sample testing are available.
1. Chemical Composition:
|
Ni |
Bal |
|
Cr |
20.0-23.0 |
|
Fe |
≤1.0 |
2. Technical Specifications:
|
Parameter |
Specification |
|
Max continuous Operating Temperature(℃) |
1200 |
|
Resisivity(Ω/cmf,20℃) |
1.09 |
|
Density(g/m³) |
8.4 |
|
Thermal Conductivity(KJ/m·h·℃) |
60.3 |
|
Tensile strength(N/m㎡) |
750 |
|
Melting point(℃) |
1400 |
|
Hardness(Hv) |
180 |
|
Elongation(%) |
≥20 |
3. Production Attributes
|
Product Form |
welding tube |
|
Diameter |
customization |
|
Surface Finish |
Bright, Polished |
|
Packaging Type |
Coil, Bundle, Straight Rods |
|
Certification |
ISO9001, SGS, and so on |
|
Application Environment |
Chemical, Industrial,Home |
4. Applications
- Electric heating tube elements for industrial heaters and drying equipment
- Radiation tubes and heating pipes for industrial furnaces and heat treatment furnaces
- Thermocouple protection tubes for high temperature measurement
- High temperature and corrosion-resistant piping for the chemical industry
- Heating structural parts for heaters, ovens, and household heating appliances
- Heat-resistant tubes for metallurgy, annealing, and quenching furnaces
5. Key Features
-
non-magnetic austenitic structure
-
Excellent high-temperature resistance
-
Superior oxidation & corrosion resistance, long service life
-
Stable electrical resistivity, uniform heating, and high conversion efficiency
-
Good mechanical strength & creep resistance, not easy to deform
-
Precision seamless/welded tube, high dimensional accuracy
-
Widely used for heating tubes, furnace parts, and thermocouple protection tubes
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.