OhmAlloy30(Resistance heating wire and resistance wire)
(Common Name:CuNi23,NC30,Curpothal30)
OhmAlloy30 is a copper-nickel alloy (Cu77Ni23 alloy) with low resistivity for use at temperatures up to 300°C.
OhmAlloy30 is typically used for applications such as heating cables, fuses, shunts, resistors and various types of controllers.
Normal composition%
| Nickel |
23 |
Manganese |
0.5 |
| Copper |
Bal. |
|
|
Typical Mechanical properties(1.0mm)
| Yield strength |
Tensile Strength |
Elongation |
| Mpa |
Mpa |
% |
| 170 |
350 |
25 |
Typical Physical properties
| Density (g/cm3) |
8.9 |
| Electrical resistivity at 20ºC (Ωmm2/m) |
0.30 |
| Temperature factor of resistivity(20ºC~600ºC)X10-5/ºC |
<16 |
| Conductivity coefficient at 20ºC (WmK) |
33 |
| EMF vs Cu(μV/ºC )(0~100ºC ) |
-34 |
| Coefficient of thermal expansion |
| Temperature |
Thermal Expansion x10-6/K |
| 20 ºC- 400ºC |
17.5 |
| Specific heat capacity |
| Temperature |
20ºC |
| J/gK |
0.380 |
| Melting point (ºC) |
1150 |
| Max continuous operating temperature in air (ºC) |
300 |
| Magnetic properties |
non-magnetic |
Corrosion resistance performance
| Alloys |
Working In atmosphere at 20ºC |
Working at max temperature 200ºC |
Air and oxygen contain
gases |
gases with Nitrogen |
gases with sulfur
oxidability |
gases with sulfur
reductibility |
carburization |
| OhmAlloy30 |
good |
general |
general |
general |
bad |
good |
Style of supply
| Alloys Name |
Type |
Dimension |
| OhmAlloy30W |
Wire |
D=0.06mm~8mm |
| OhmAlloy30R |
Ribbon |
W=0.4~40 |
T=0.05~2.9mm |
| OhmAlloy30S |
Strip |
W=8~200mm |
T=0.1~3.0 |
| OhmAlloy30F |
Foil |
W=6~120mm |
T=0.005~0.1 |
| OhmAlloy30B |
Bar |
Dia=8~100mm |
L=50~1000 |
Audited Supplier 
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