UL 1570 Mineral-Filled PTFE Wire 250°C 600V, Nickel-Plated Copper
UL 1570 wire is a 600 V, 250 °C single-conductor wire with extruded mineral-filled PTFE insulation over nickel-plated copper, built for heat, chemical agents and abrasion, and used to replace asbestos or glass-braided leads.
- Voltage rating600 V
- Temperature rating250 °C
- ConductorNickel-plated copper
- InsulationMineral-filled PTFE, extruded
- Sizes8 to 24 AWG
- Overall diameter1.73 mm to 5.84 mm
- Colours10 standard colours
- MarkingSurface printed, UL or CSA
UL 1570 is the UL wire style for 600 V, 250 °C single-conductor wire. TEBAOFLEX builds it with an extruded, mineral-filled PTFE insulation over stranded nickel-plated copper, in sizes from 8 AWG to 24 AWG. The mineral filler gives the PTFE wall a harder surface, so the wire resists abrasion where it is pulled past edges, clamps and hardware inside equipment.
Choose UL 1570 for wiring that runs close to heat sources, is exposed to chemical agents or sees dielectric stress, and wherever older asbestos or glass-braided leads are being replaced. The extruded wall is thinner and smoother than a braided insulation, which makes the wire easier to route and to strip cleanly.
Browse the UL style wire category for the other PTFE, FEP, silicone and XLPE styles or download the UL 1570 datasheet (PDF).
Application & Features
Selection overview
UL 1570 is used for leads and internal wiring in equipment that runs hot or sees chemical agents: heating and heat-treatment equipment, ovens and dryers, high-temperature lighting, and electronic assemblies where the insulation sees high dielectric stress. Where an older design used asbestos or glass-braided leads, the extruded mineral-filled PTFE wall gives the same heat class with a thinner, cleaner wire.
Within the TEBAOFLEX PTFE range, compare UL 1659 for a 600 V, 250 °C lead wire with plain PTFE insulation, UL 1815 for 300 V appliance and electronic wiring at 250 °C, and UL 1199 where a 200 °C, 600 V rating is enough.
- Mineral-filled PTFEA harder extruded wall that resists abrasion against edges, clamps and hardware.
- 250 °C ratingFor wiring next to heaters, burners and other hot components.
- Nickel-plated copperPlating that protects the strands at high temperature; a high-strength alloy is optional.
- Chemical resistancePTFE insulation for wiring exposed to chemical agents and dielectric stress.
Specifications
Technical data
Nominal values for UL 1570 constructions; resistance at 20 °C. The final construction is confirmed on the TEBAOFLEX datasheet issued with your quotation.
Electrical, thermal and material data
| Parameter | Value |
|---|---|
| Voltage rating | 600 V; up to 2,500 V peak for electronic use only |
| Temperature rating | 250 °C |
| Conductor | Nickel-plated copper |
| Conductor option | Nickel-plated high-strength copper alloy |
| Insulation | Extruded mineral-filled PTFE |
| Performance | Abrasion resistant, flexible and chemically resistant |
| Colours | Available in 10 standard colours |
| Identification | Surface printed as required by UL or CSA |
| Wire style | UL 1570; CSA 600 V |
| Application | Replacement for asbestos or braided glass insulated wires |
Dimensions, weights and resistance (* electronic use only)
| AWG | Stranding | Cond. dia. in / mm | Insul. dia. in / mm | Weight lb/1000 ft / kg/km | Max. resistance ohm/1000 ft / ohm/km |
|---|---|---|---|---|---|
| 8 | 133/29 | .163 / 4.14 | .230 / 5.84 | 71.7 / 107 | 0.694 / 2.28 |
| 10 | 37/.0167 | .113 / 2.87 | .179 / 4.55 | 44.9 / 66.8 | 1.25 / 4.10 |
| 10 | 37/26* | .108 / 2.74 | .174 / 4.42 | 42.3 / 63.0 | 1.23 / 4.03 |
| 12 | 19/.0186 | .088 / 2.24 | .134 / 3.40 | 27.1 / 40.3 | 1.66 / 5.44 |
| 12 | 19/25* | .084 / 2.13 | .130 / 3.30 | 26.4 / 39.3 | 1.89 / 6.20 |
| 14 | 19/.0147 | .070 / 1.78 | .115 / 2.92 | 19.2 / 28.6 | 2.70 / 8.86 |
| 14 | 19/27* | .067 / 1.70 | .112 / 2.84 | 17.8 / 26.5 | 3.00 / 9.84 |
| 16 | 19/.0117 | .056 / 1.42 | .102 / 2.59 | 13.4 / 19.9 | 4.41 / 14.5 |
| 16 | 19/29* | .053 / 1.35 | .099 / 2.51 | 12.7 / 19.0 | 4.76 / 15.6 |
| 18 | 19/30 | .047 / 1.19 | .093 / 2.36 | 10.7 / 16.0 | 6.10 / 20.0 |
| 20 | 19/32 | .038 / .965 | .083 / 2.11 | 7.89 / 11.7 | 9.68 / 31.8 |
| 22 | 19/34 | .030 / .762 | .074 / 1.88 | 5.82 / 8.66 | 15.7 / 51.5 |
| 24 | 19/36 | .024 / .610 | .068 / 1.73 | 4.54 / 6.76 | 25.2 / 82.7 |
Selection note: Strandings marked * are for electronic use only. Before ordering, ask our engineers to confirm the minimum bending radius, the current rating for your installation, the flame-test marking and the put-up lengths you need.
Standards & References
Applicable standards and compliance
- Wire styleUL 1570 single-conductor wire, 600 V and 250 °C, with a CSA 600 V marking option on the insulation surface.
- ConductorStranded nickel-plated copper from 133 strands at 8 AWG to 19 strands at 24 AWG, as listed in the size table.
- Voltage scope600 V for power wiring; the strandings marked * are limited to electronic use, where up to 2,500 V peak applies.
- ApprovalsUL style and CSA markings for your order are confirmed and quoted per order.
Construction
Material and build-up
UL 1570 is a single-conductor wire with two layers: a stranded nickel-plated copper conductor and one extruded mineral-filled PTFE wall.
- Conductor: stranded nickel-plated copper; the plating protects the copper at 250 °C, and a nickel-plated high-strength copper alloy is available for wire that must resist breakage.
- Insulation: extruded PTFE with a mineral filler, which raises abrasion resistance compared with a plain PTFE wall.
- Identification: surface printing as required by UL or CSA, in 10 standard insulation colours.
- Electronic-use strandings: the alternative strandings marked * (37/26, 19/25, 19/27 and 19/29) are for electronic use only.
FAQ
Selection questions
What is UL 1570 wire?
UL 1570 is a UL wire style for single-conductor wire rated 600 V and 250 °C. The TEBAOFLEX version uses extruded mineral-filled PTFE insulation over nickel-plated stranded copper, from 8 AWG to 24 AWG, for wiring exposed to heat, chemical agents and abrasion.
How is UL 1570 different from UL 1659 and UL 1815?
All three are 250 °C PTFE wires. UL 1570 adds a mineral filler to the PTFE for abrasion resistance and is rated 600 V. UL 1659 is a 600 V lead wire with plain PTFE insulation for electronic and appliance use, and UL 1815 is a 300 V appliance and electronic wire with silver-plated or nickel-plated copper.
Why is the conductor nickel-plated?
At a 250 °C rating, nickel plating protects the copper strands where tin plating is not used. For leads that see vibration or repeated flexing, a nickel-plated high-strength copper alloy conductor is available as an option.
What does 2,500 V peak for electronic use mean?
The 600 V rating applies to power wiring. The strandings marked * in the size table are limited to electronic use, where the insulation may see up to 2,500 V peak. Tell us the voltage your circuit sees when you request a quotation.
What should I send for a quotation?
Send the UL style, AWG size and stranding, insulation colour, standard or high-strength alloy conductor, put-up length, quantity and any UL or CSA marking requirement. Our engineers confirm the construction on the datasheet issued with your quotation.
Request this cable.
Send the UL style, AWG size and stranding, insulation colour, conductor option, put-up length, quantity and marking requirement, and we will confirm the construction and quote.
Quality Assurance
Testing at every stage in our own workshop and laboratory, from incoming copper to the packed drum.
Raw Material Inspection
Every batch of copper rod, rubber compound and reinforcing material is checked before it reaches the line.
- Copper: conductor resistance, elongation and surface condition on incoming rod and drawn wire
- EPR, CPE, PUR and silicone compounds: hardness, tensile strength, elongation and ageing samples from each mix
- Suppliers and batch numbers are recorded so every drum can be traced back to its materials
Manufacturing Process Control
Stranding, insulation extrusion, core assembly and sheathing run under recorded process parameters.
- Class 5/6 stranding with lay length and tension monitored for trailing and reeling flexibility
- Continuous-vulcanisation extrusion with wall thickness and spark tests logged on every length
- Operators sign off each stage before the cable moves to the next machine
Electrical Testing
Finished lengths go through the routine tests required by the referenced VDE, ICEA, IEC or NEK standard.
- Conductor resistance and insulation resistance on every length
- Voltage withstand (3.5 kV and higher) and partial-discharge measurement in the shielded HV laboratory
- Screen and pilot-core continuity checks for mining and reeling constructions
Mechanical and Ageing Tests
Samples from production are tested for the duty a mining, crane or submersible cable will actually see.
- Tensile strength and elongation of insulation and sheath before and after ageing
- Hot-set, ozone, oil-immersion and low-temperature bending tests
- Constant-temperature water bath for insulation resistance of submersible constructions
Flame Test and Final Inspection
Before packing, the cable is checked against the order and the flame-performance requirement of its standard.
- Single-cable vertical flame test to IEC 60332-1-2 where specified
- Metre marking, printing, drum length and appearance inspection
- Test report and packing list issued with every shipment
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UL 1333 FEP Wire 150°C 300V, Stranded or Solid Tinned Copper
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UL 1199 PTFE Wire 200°C 600V, Silver-Plated Copper
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UL 1198 PTFE Wire 150°C 600V, Silver-Plated Copper
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UL 1213 PTFE Hook-Up Wire 105°C 600V, Silver-Plated Copper
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