Nicr35/20 electric heating resistance 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
|