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NF40 PTC Ni-Fe alloy can automatically control temperature

PTC Alloy wire has medium resistivity and high positive temperature coefficient of resistance. It is widely used in various heaters. It can automatically control temperature and adjust power by keeping constant current and limiting current. PTC alloy has many advantages such as automatic temperature control, automatic power regulation, constant current, current limiting, energy saving and long practical life.
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Quantity:
  • NF40
  • REOU
PTC Alloy wire has medium resistivity and high positive temperature coefficient of resistance. It is widely used in various heaters. It can automatically control temperature and adjust power by keeping constant current and limiting current.

Specification
Code
Diameter  mm
Wire
Rod
Wire rod
NF13
0.05-8.0
12-30
8-14
NF15
0.05-8.0
12-30
8-14
NF20
0.05-8.0
12-30
8-14
NF23
0.05-8.0
12-30
8-14
NF25
0.05-8.0
12-30
8-14
NF32
0.05-8.0
12-30
8-14
NF36
0.05-8.0
12-30
8-14
NF38
0.05-8.0
12-30
8-14
NF40
0.05-8.0
12-30
8-14
NF43
0.05-8.0
12-30
8-14
NF46
0.05-8.0
12-30
8-14
NF52
0.05-8.0
12-30
8-14
NF60
0.05-8.0
12-30
8-14
Tolerances
Category
Diameter range     mm
Elongation rate
 ≥%
Cold drawn wire
0.05 > d < 0.1
≥ 18
0.1 > d < 0.3
≥ 20
0.3 > d < 0.5
≥ 20
0.5 > d < 1.0
≥ 20
Chemical composition
Alloy brand
Chemical element
Ni 100%
Fe 100%
NF13
85-95
Rest
NF15
75-85
Rest
NF20
70-75
Rest
NF23
60-65
Rest
NF25
60-65
Rest
NF32
50-55
Rest
NF36
50-55
Rest
NF38
50-55
Rest
NF40
50-55
Rest
NF43
45-50
Rest
NF46
45-50
Rest
NF52
45-50
Rest
NF60
45-50
Rest
Resistivity
Alloy brand
20℃ resistivity
Tolerance range
NF13
0.13
±0.02
NF15
0.15
±0.02
NF20
0.20
±0.02
NF23
0.23
±0.02
NF25
0.25
±0.02
NF32
0.32
±0.02
NF36
0.36
±0.02
NF38
0.38
±0.02
NF40
0.40
±0.02
NF43
0.43
±0.02
NF46
0.46
±0.02
NF52
0.52
±0.02
NF60
0.60
±0.02


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