Electric heating alloy for convection heaters Cr20Ni35 resistance wire
(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 |
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