Nickel-Chrome Alloy

Cr20Ni80

Request a Quote

Cr20Ni80 is a nickel-chromium alloy known for its excellent high-temperature performance, outstanding ductility, and superior resistance to oxidation and corrosion. It retains structural stability even under prolonged exposure to extreme heat, making it a preferred material for heating elements and industrial applications. With its excellent machinability and weldability, it is widely used in electrical resistance heating and thermal processing industries.

Specifications
  • Wire Wire 0.05-7.5
  • Rod Rod 8-50
  • Flat Wire Flat Wire (0.05-0.35)*(0.5-6.0)
  • Strip/Foil Strip/Foil (0.5-2.5)*(5-40)
Chemical Composition
  • Nickel (Ni): Rest
  • Chromium (Cr): 20.0-23.0
  • Iron (Fe): ≤1.0
Physical & Mechanical Properties
  • Grade: Cr20Ni80
  • Max. Service Temperature (°C): 1200
  • Melting Point (°C): 1400
  • Density (g/cm³): 8.4
  • Resistivity at 20℃ (μΩ•m): 1.09±0.05
  • Elongation at Rupture (%): ≥20
  • Specific Heat (J/g.℃): 0.44
  • Thermal Conductivity (KJ/m.h.ºC): 60.3
  • Coefficient of Lines Expansion (α×10⁻⁶/20~1000ºC): 18
  • Micrographic Structure: Austenite
  • Magnetic Properties: Non-magnetic