TEBAOFLEX UL 1570 is a heavy-duty 250°C, 600 V AC mineral-filled polytetrafluoroethylene (PTFE) lead wire verified to UL AWM Style 1570 (UL 758) and CSA 600 V requirements. Engineered with inorganic mineral reinforcement dispersed inside an extruded PTFE wall (0.020 in / 0.51 mm on 24-12 AWG; 0.030 in / 0.76 mm on 10-8 AWG) over a 27% nickel-plated copper conductor, it delivers superior scrape and pinch abrasion resistance without the fraying, dust shedding, or fluid wicking of braided fiberglass wires.
1. Application Scope & Fluoropolymer Style Comparison
UL 1570 is specified for internal appliance, furnace, chemical-processing, and aerospace wiring where leads pull across stamped metal chassis edges or operate in corrosive thermal zones from -65°C to +250°C. Mineral reinforcement increases mechanical cut-through strength while maintaining non-wetting fluoropolymer chemical inertness.
- Replacement for Braided Fiberglass & Legacy Asbestos Leads: Clean, non-fraying hook-up and heater element terminations in commercial cooking equipment, industrial ovens, kilns, and platen presses.
- Semiconductor, Chemical & Plating Process Equipment: Wet-bench heaters, acid/alkali pump controls, and solvent vapor zones where silicone swells and fiberglass braids wick corrosive condensates.
- Aerospace, Turbine & High-Vibration Harnesses: Available with optional nickel-plated high-strength copper alloy stranding where elevated tensile flex life and high-temperature crimp reliability are required.
| TEBAOFLEX High-Temp Style | Rated Voltage & Temp. | Insulation Wall & Matrix | Standard Conductor | Primary Engineering Selection |
|---|---|---|---|---|
| UL 1570 (This Page) | 600 V AC | 250°C | 0.51 / 0.76 mm Mineral-Filled PTFE | 27% Nickel-plated Cu (NPC) | Abrasion-resistant replacement for glass-braid leads |
| UL 1584 Heavy-Wall PTFE | 1000 V AC | 250°C | 0.64-1.14 mm Heavy Extruded PTFE | 27% Nickel-plated Cu (NPC) | 1000 V furnace power & higher dielectric margin |
| UL 10393 Standard PTFE | 600 V AC | 250°C | 0.33 mm Thin-Wall Unfilled PTFE | 27% Nickel-plated Cu (NPC) | Compact electronic chassis & sensor harnesses |
| UL 1199 SPC PTFE | 600 V AC | 200°C | 0.33 mm Unfilled Extruded PTFE | Silver-plated Cu (SPC) | Soldered avionics & high-frequency signal leads |
| UL 3071 Silicone + Glass | 600 V AC | 200°C | Silicone Rubber + Fiberglass Braid | Tinned Copper (TC) | Dry-ambient heating leads up to 200°C |
Termination & Soldering Note: Heavy 27% nickel-plated copper resists oxidation up to 250°C (and intermittent peaks to 260°C) but requires active rosin/halide flux or high-temperature mechanical crimping/resistance welding rather than mild no-clean electronics solder.
2. Cable Construction (UL AWM Style 1570 Architecture)
UL 1570 is manufactured with concentric stranded nickel-plated conductors and paste-extruded, sintered mineral-filled PTFE insulation:
24 AWG through 8 AWG, preventing copper oxide scaling and brittle strand failure at continuous 250°C duty.0.020 in (0.51 mm) minimum average wall (0.018 in / 0.46 mm minimum at any point) for 24-12 AWG, and 0.030 in (0.76 mm) minimum average wall (0.027 in / 0.69 mm minimum at any point) for 10-6 AWG.TEBAOFLEX UL 1570 PTFE 250C 600V.3. Technical & Electrical Characteristics
Verified electrical, mechanical, and environmental ratings for TEBAOFLEX UL AWM Style 1570 mineral-filled PTFE wire:
| Parameter | Engineering Rating | Standard / Test Condition |
|---|---|---|
| Nominal Voltage Rating | 600 V AC RMS | UL allows up to 2,500 V peak for internal electronic use only |
| Dielectric & Spark Test | 2,000 V AC dielectric | 3,400 V AC spark | UL 758 / UL 1581 100% in-line impulse/AC spark verification |
| Continuous Temperature | -65°C to +250°C | Zero thermal embrittlement in cryogenic air or 250°C ovens |
| Insulation Wall (24-12 AWG) | 0.020 in (0.51 mm) min. average | 0.018 in (0.46 mm) minimum thickness at any cross-sectional point |
| Insulation Wall (10-6 AWG) | 0.030 in (0.76 mm) min. average | 0.027 in (0.69 mm) minimum thickness at any cross-sectional point |
| Flame Retardancy | UL VW-1 / CSA FT1 pass | Non-flammable fluoropolymer; Limiting Oxygen Index (LOI) > 90% |
| Abrasion & Cut-Through | Mineral-reinforced high modulus | Elevated scrape/pinch resistance vs unfilled PTFE (UL 1199 / 10393) |
| Chemical & Fluid Immunity | Virtually universal inertness | Unaffected by mineral acids, caustics, ketones, fuels, and steam |
| Minimum Bending Radius | 6 × overall diameter (fixed) | 10 × overall diameter recommended for repeated flexing |
4. Specification & AWG Schedule (8 AWG to 24 AWG)
Dimensional and electrical schedule for TEBAOFLEX UL 1570 with 27% nickel-plated copper conductors. Rows marked with an asterisk (*) denote compact gauge-based strandings recognized by CSA for internal electronic use:
| Part No. / SKU | Wire Size (AWG) | Stranding (No./AWG or in) | Conductor OD (in / mm) | Nominal Insulated OD (in / mm) | Max. DC Resistance at 20°C (Ω/km) | Approx. Weight (lb/kft | kg/km) |
|---|---|---|---|---|---|---|
UL1570-08-13329 | 8 AWG | 133 / 29 AWG | 0.163 / 4.14 | 0.230 / 5.84 | 2.28 | 71.7 | 107.0 |
UL1570-10-370167 | 10 AWG | 37 / 0.0167 in | 0.113 / 2.87 | 0.179 / 4.55 | 4.10 | 44.9 | 66.8 |
UL1570-10-3726E | 10 AWG | 37 / 26 AWG* | 0.108 / 2.74 | 0.174 / 4.42 | 4.03 | 42.3 | 63.0 |
UL1570-12-190186 | 12 AWG | 19 / 0.0186 in | 0.088 / 2.24 | 0.134 / 3.40 | 5.44 | 27.1 | 40.3 |
UL1570-12-1925E | 12 AWG | 19 / 25 AWG* | 0.084 / 2.13 | 0.130 / 3.30 | 6.20 | 26.4 | 39.3 |
UL1570-14-190147 | 14 AWG | 19 / 0.0147 in | 0.070 / 1.78 | 0.115 / 2.92 | 8.86 | 19.2 | 28.6 |
UL1570-14-1927E | 14 AWG | 19 / 27 AWG* | 0.067 / 1.70 | 0.112 / 2.84 | 9.84 | 17.8 | 26.5 |
UL1570-16-190117 | 16 AWG | 19 / 0.0117 in | 0.056 / 1.42 | 0.102 / 2.59 | 14.50 | 13.4 | 19.9 |
UL1570-16-1929E | 16 AWG | 19 / 29 AWG* | 0.053 / 1.35 | 0.099 / 2.51 | 15.60 | 12.7 | 19.0 |
UL1570-18-1930 | 18 AWG | 19 / 30 AWG | 0.047 / 1.19 | 0.093 / 2.36 | 20.00 | 10.7 | 16.0 |
UL1570-20-1932 | 20 AWG | 19 / 32 AWG | 0.038 / 0.965 | 0.083 / 2.11 | 31.80 | 7.89 | 11.7 |
UL1570-22-1934 | 22 AWG | 19 / 34 AWG | 0.030 / 0.762 | 0.074 / 1.88 | 51.50 | 5.82 | 8.66 |
UL1570-24-1936 | 24 AWG | 19 / 36 AWG | 0.024 / 0.610 | 0.068 / 1.73 | 82.70 | 4.54 | 6.76 |
Custom 6 AWG power leads, spiral stripe colour combinations, and nickel-plated high-strength copper alloy builds are produced to order. Explore our complete High-Temp & Specialty Cables catalog for PFA, FEP, and mica-insulated 450°C alternatives.
5. Frequently Asked Questions (UL 1570 Mineral-Filled PTFE Engineering)
How does mineral-filled UL 1570 PTFE differ from unfilled PTFE hook-up wires such as UL 1199 or UL 10393?
UL 1570 incorporates inorganic mineral reinforcement dispersed inside the extruded PTFE matrix and increases minimum average wall thickness to 0.020 in (0.51 mm) on 24-12 AWG and 0.030 in (0.76 mm) on 10-6 AWG. That mineral-reinforced wall improves pinch, scrape, and sheet-metal cut-through resistance compared with thin-wall unfilled PTFE wires while retaining a full 250°C continuous thermal rating.
Why is UL 1570 specified to replace braided fiberglass lead wires in commercial ovens and chemical equipment?
Fiberglass-braided silicone or mica wires shed irritating glass fibers when stripped, fray at termination ferrules, and can wick moisture, cooking grease, or chemical vapors into the weave. Extruded mineral-filled PTFE forms a smooth, non-porous, chemically inert barrier that strips cleanly for automated crimping without sleeve fraying.
Why must 250°C UL 1570 use 27% nickel-plated copper instead of silver-plated or tinned copper?
Tin melts near 232°C and oxidizes rapidly above 150°C, while silver-plated copper is capped at 200°C due to grain-boundary oxidation and galvanic red-plague risk. A heavy 27% nickel plating per ASTM B355 Class 27 prevents copper oxidation continuously at 250°C and supports high-temperature crimp or weld terminations.
What do the asterisked strandings (such as 37/26* or 19/25*) mean in the UL 1570 AWG schedule?
Under dual UL/CSA certification rules, standard metric/inch concentric strandings (such as 37/0.0167 on 10 AWG or 19/0.0186 on 12 AWG) meet full CSA power and appliance cross-section minimums, whereas compact gauge-based strandings marked with an asterisk (37/26*, 19/25*, 19/27*, 19/29*) are permitted by CSA specifically for internal electronic equipment wiring.
Specify UL 1570 Mineral-Filled 250°C PTFE Lead Wire
Send your AWG gauge, stranding preference (standard CSA power vs compact electronic or high-strength Ni-Cu alloy), insulation colour schedule, and spool length for factory datasheet confirmation and pricing.
