NF32 PTC Ni-Fe alloy can automatically control temperature
Product Description
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 |