NCHW Stranded Wire
Stranded resistance wire is made of Nichrome alloys, such as NCHW1,
NCHW2, etc. It can be made with 7 strands, 19 strands, or 37
strands, or other configurations.
Stranded resistance heating wire has many advantages, such as
deformation ability, thermal stability, mechanical character,
shockproof ability in thermal state and anti-oxidization. Nichrome
Wire forms a protective layer of chromium oxide when it is heated
for the first time. Material beneath the layer will not oxidize,
preventing the wire from breaking or burning out. Due to Nichrome
Wire's relatively high resistivity and resistance to oxidation at
high temperatures, it is widely used in heating elements, electric
furnace heating and heat-treating processes in the chemical,
mechanical, metallurgical and defense industries,
Typical stranded resistance alloys and constructions are:
Alloy | Standard Strand Construction, mm | Resistance,Ω/m | Strand Diameter Nominal, mm | Meter per Kilo |
NCHW1 | 19×0.544 | 0.233-0.269 | | 26 |
NCHW1 | 19×0.61 | 0.205-0.250 | | |
NCHW1 | 19×0.523 | 0.276-0.306 | 2.67 | 30 |
NCHW1 | 19×0.574 | | 2.87 | 25 |
NCHW1 | 37×0.385 | 0.248-0.302 | 2.76 | 26 |
NCHW2 | 19×0.508 | 0.286-0.318 | | |
NCHW2 | 19×0.523 | 0.276-0.304 | | 30 |
Ni | 19×0.574 | 0.020-0.027 | 2.87 | 21 |