AWG28 SWG40 0.32mm Fast Heating Speed nikrothal 80 wire for Electric Cigarette Atomizer Ni80Cr20
OhmAlloy109
(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.)
Nichrome has a silvery gray coloration. Nichrome wires are quite oxidation resistant. When at a high temperature environment, up to 1200 C (Nicr 8020), both nickle oxide and chromium oxide will be formed. As chromium oxide is more stable than nickel oxide, a layer of chromium oxide will be formed on the surface of the nichrome wire. The diffusion rate D of oxygen through chromium oxide is very low, which is 10-14 cm2/sec.
In order to have enough resistance, mental conduct wires always are designed into thin form. They process of oxidation will be quick, making them brittle and break when heated in air. By contrast, not only does nichrome have a excellent oxidation resistant, it also has a good ductility after high temperature use. Besides that, nichrome alloys have a higher emissivity compared to other air-stable resistance alloys. Nichrome alloys will endure a lower element temperature at the same surface load. Moreover, Nichrome alloys will be preferred in low-temperature applications because of its non-magnetic feature. It also has a higher hot and creep strength, wet corrosion resistance and good wear resistance.
OhmAlloy109 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 OhmAlloy109 are electric heating elements in home appliances,industrial furnaces and resistors(wirewound 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 20ºC(Ωmm2/m) |
1.09 |
| Conductivity coefficient at 20ºC (WmK) |
15 |
| Coefficient of thermal expansion |
| Temperature |
Coefficient of Thermal Expansion x10-6/ºC |
| 20 ºC- 1000ºC |
18 |
| Specific heat capacity |
| Temperature |
20ºC |
| J/gK |
0.46 |
| Melting point (ºC) |
1400 |
| Max continuous operating temperature in air (ºC) |
1200 |
| Magnetic properties |
non-magnetic |
| Temperature Factors Of Electrical Resistivity |
| 20ºC |
100ºC |
200ºC |
300ºC |
400ºC |
600ºC |
| 1 |
1.006 |
1.012 |
1.018 |
1.025 |
1.018 |
| 700ºC |
800ºC |
900ºC |
1000ºC |
1100ºC |
1300ºC |
| 1.01 |
1.008 |
1.01 |
1.014 |
1.021 |
- |
Style of supply
| Alloys Name |
Type |
Dimension |
| OhmAlloy109W |
Wire |
D=0.03mm~8mm |
| OhmAlloy109R |
Ribbon |
W=0.4~40 |
T=0.03~2.9mm |
| OhmAlloy109S |
Strip |
W=8~250mm |
T=0.1~3.0 |
| OhmAlloy109F |
Foil |
W=6~120mm |
T=0.003~0.1 |
| OhmAlloy109B |
Bar |
Dia=8~100mm |
L=50~1000 |
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