PTFE/PFA Insulated NiCr Resistance Wire
UL1330/UL758 Certified | 260°C Continuous Operation | Chemical & Moisture Resistant
Product Overview
PTFE/PFA Insulated NiCr Heating Wire with Ni80Cr20 Core delivers reliable performance in demanding applications including chemical reactors, medical sterilizers, and food processing heaters.
Material Technology
- Core Alloy: Ni80Cr20 (Standard) - Resistivity 1.08 µΩ·m | Maximum Temperature 1200°C
Optional: Ni60Cr15 | Ni70Cr30 | Ni35Cr20
- Insulation Systems:
PTFE: Thickness 0.25±0.05mm | Operating Range -70°C to 260°C
PFA: Thickness 0.30±0.05mm | Operating Range -70°C to 260°C (300°C intermittent)
- Jacket Colors: PTFE: White/Black/Transparent | PFA: Clear/Amber (FDA compliant)
Certified Performance
Electrical-Chemical Reliability
- Dielectric Strength: 8 kV/mm (IEC 60243)
- Insulation Resistance: >1000 MΩ/km at 20°C (IEC 60172)
- Chemical Resistance: PTFE: Withstands 98% H₂SO₄ at 150°C × 500hr | PFA: Resists 50% NaOH at 100°C × 1000hr
- Thermal Cycling: ΔR <1% after 1,000 cycles (RT↔250°C)
Safety & Compliance
- Flame Rating: V-0 (UL94) | Low Smoke Zero Halogen (IEC 60754)
- Food Contact: FDA 21 CFR 177.1550 (PFA)
- Medical: ISO 10993-5 Cytotoxicity Pass
Technical Specifications
| Electrical Properties |
Voltage Rating: 600V AC (UL1330) Resistance Tolerance: ±3% (IEC 60317) TCR: 0.00013/°C (20-1000°C) |
| Mechanical Properties |
Tensile Strength: ≥780 MPa Min Bend Radius: 8×D (PTFE) | 10×D (PFA) Abrasion Resistance: >150 cycles (ASTM D3389) |
| Dimensional Range |
Conductor: 0.05mm (AWG40) to 3.0mm (AWG10) Standard Length: 10m-1000m coils Custom: Twisted pairs | Shielded versions |
Application Validation
Chemical Processing
- Reactor immersion heaters: 2+ year service in 30% HCl
- Acid vapor ducts: 0% degradation at 180°C/500hr
Medical Equipment
- Autoclave heaters: 300+ sterilization cycles
- MRI-compatible: Magnetic permeability <1.01 μ
Food Industry
- Conveyor dryers: NSF/3-A certified
- Fryer elements: 0.01mg/ft² extractables (FDA)