Ni35Cr20 is a nickel-chromium alloy (NiCr alloy) characterized by High resistivity, good oxidation resistance,very good form stability,good ductility and excellent weldability. It is suitable for use at temperatures up to 1100°C.
Typical applications for OhmAlloy104A are used in night-storage heaters,convection heaters,heavy duty rheostats and fan heaters.And also used for heating cables and rope heaters in defrosting and de-icing elements, electric blankets and pads,car seats,baseboard heaters and floor heaters,resistors.
Normal composition%
C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other |
Max | |||||||||
0.08 | 0.02 | 0.015 | 1.00 | 1.0~3.0 | 18.0~21.0 | 34.0~37.0 | - | Bal. | - |
Typical Mechanical properties(1.0mm)
Yield strength | Tensile Strength | Elongation |
Mpa | Mpa | % |
340 | 675 | 35 |
Typical Physical properties
Density (g/cm3) | 7.9 |
Electrical resistivity at 20ºC(Ωmm2/m) | 1.04 |
Conductivity coefficient at 20ºC (WmK) | 13 |
Coefficient of thermal expansion | |
Temperature | Coefficient of Thermal Expansion x10-6/ºC |
20 ºC- 1000ºC | 19 |
Specific heat capacity | |
Temperature | 20ºC |
J/gK | 0.50 |
Melting point (ºC) | 1390 |
Max continuous operating temperature in air (ºC) | 1100 |
Magnetic properties | non-magnetic |
Temperature Factors Of Electrical Resistivity
20ºC | 100ºC | 200ºC | 300ºC | 400ºC | 500ºC | 600ºC |
1 | 1.029 | 1.061 | 1.09 | 1.115 | 1.139 | 1.157 |
700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC | 1200ºC | 1300ºC |
1.173 | 1.188 | 1.208 | 1.219 | 1.228 | - | - |