(Common Name: Ni80Cr20,Nikrothal 8,MWS-650,NiCrA,Tophet A,HAI-NiCr 80,Chromel A,Alloy A,Alloy 650,N8,Resistohm 80, Stablohm 650,Nichorme V,Nikrothal 80.)
Ni80Cr20 is a nickel-chromium alloy (NiCr alloy) characterized by high resistivity, good oxidation resistance and very good form stability. It is suitable for use at temperatures up to 1200°C,and hold a superior service life compared to Iron chromium alumium alloys.
Typical applications for Ni80Cr20 are electric heating elements in home appliances,industrial furnaces and resistors(wire wound resistors, metal film resistors), flat irons, ironing machines, water heaters, plastic moulding dies, soldering irons, metal sheathed tubular elements and cartridge elements.
Normal composition%
C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other |
Max |
0.03 | 0.02 | 0.015 | 0.60 | 0.75~1.60 | 20.0~23.0 | Bal. | Max 0.50 | Max 1.0 | - |
Typical Mechanical properties(1.0mm)
Yield strength | Tensile Strength | Elongation |
Mpa | Mpa | % |
420 | 810 | 30 |
Typical Physical properties
Density (g/cm3) | 8.4 |
Electrical resistivity at 20℃(Ωmm2/m) | 1.09 |
Conductivity coefficient at 20℃ (WmK) | 15 |
Coefficient of thermal expansion
Temperature | Thermal Expansion x10-6/K |
20 ℃- 1000℃ | 18 |
Specific heat capacity
Temperature | 20℃ |
J/gK | 0.46 |
Melting point (℃) | 1400 |
Max continuous operating temperature in air (℃) | 1200 |
Magnetic properties | non-magnetic |
Temperature Factors Of Electrical Resistivity
20℃ | 100℃ | 200℃ | 300℃ | 400℃ | 600℃ |
1 | 1.006 | 1.012 | 1.018 | 1.025 | 1.018 |
700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ | 1300℃ |
1.01 | 1.008 | 1.01 | 1.014 | 1.021 | - |
Style of supply
Type | Dimension |
Wire | D=0.03mm~8mm |
Ribbon | W=0.4~40 | T=0.03~2.9mm |
Strip | W=8~250mm | T=0.1~3.0 |
Foil | W=6~120mm | T=0.003~0.1 |
Bar | Dia=8~100mm | L=50~1000 |
