0.5mm NiCr35/20 alloy wire for Electric Blankets
(Common Name:Ni35Cr20,Chromel D, Nikrothal 40, N4, HAI-NiCr 40, Tophet D, Resistohm 40,Chromex,35-20 Ni-Cr,Alloy D,NiCr-DAlloy 600,Nikrothal 4,MWS-610,Stablohm 610.)
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 Ni35Cr20 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,braking 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(ohmmm2/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 | - | - |
Style of supply
| Alloys Name | Type | Dimension |
| Ni35Cr20W | Wire | D=0.03mm~8mm |
| Ni35Cr20R | Ribbon | W=0.4~40 | T=0.03~2.9mm |
| Ni35Cr20S | Strip | W=8~250mm | T=0.1~3.0 |
| Ni35Cr20F | Foil | W=6~120mm | T=0.003~0.1 |
| Ni35Cr20B | Bar | Dia=8~100mm | L=50~1000 |