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Product

High-temperature wire+800/+1000 °C ContinuousPure Nickel 200 CoreCeramic + Mica Insulation

CERAFIL CN8 Ceramic-Fibre Ultra-High-Temperature Nickel Conductor+800 to +1000 °C continuous (+1200 °C peak) ceramic-fibre pure Nickel 200 wire

CERAFIL CN8 ultra-high-temperature furnace wire engineered with a flexible Class 5 pure Nickel 200 conductor (Ni ≥ 99.2 %), phlogopite mica barrier tapes, and alumino-silicate ceramic yarn braiding for +800 to +1000 °C continuous (+1200 °C peak).

Flame-retardant
Approved
Ozone, UV & moisture
Order designation
CERAFIL CN8 1×2.5 (14 AWG)
Outer Ø ≈
4.60 mm
Wall thickness
1.20 mm
Total weight ≈
44.0 kg/km
Min. bend R (fixed)
46 mm
All sizes (10)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
300/500 V AC
Dry high-temp furnace circuit
Temperature
-60…+800 °C
+1000 °C cont. · +1200 °C peak
Conductor
Pure Nickel 200
Ni ≥ 99.2 % (ASTM B160 Cl. 5)
Insulation
Mica + ceramic
Phlogopite mica + ceramic yarn
Outer jacket
Ceramic braid
Alumino-silicate refractory braid
Size range
0.5 to 25 mm²
Single-core ultra-high-temp

Typical values for this cable type, based on ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic Wire — confirmed in the datasheet and quotation for your order.

Application fit

Is CERAFIL CN8 right for your machine?

Specify CERAFIL CN8 when operating temperatures exceed the +450 °C ceiling of E-glass/mica cables (Type MG / UL 5170) — up to +800/+1000 °C continuous inside furnaces, kilns, and radiant heaters.

Furnace, kiln & high-temp zone

Suitable

Pure Nickel 200 core and ceramic fibre braid operate continuously at +800 to +1000 °C (+1200 °C peak) without melting.

Switchgear & control cabinet wiring

Suitable

Direct connection lead for silicon-carbide/molybdenum-disilicide heating elements, cartridge heaters, and kiln thermocouples.

Fixed installation

Suitable

Inorganic phlogopite mica and ceramic yarn insulation is 100 % non-combustible and zero-halogen.

Immersion & wet locations

Not suitable

Unsealed ceramic braid is hygroscopic and meant for dry hot zones; protect against liquid moisture during cold standby.

Use FLAME ARREST LT for wet zones
Typical machinesHeat-Treatment & Vacuum FurnacesCeramic & Glass Melting KilnsMetallurgical & Foundry EquipmentIndustrial Cartridge & Band HeatersSemiconductor Diffusion Furnaces

Construction

Layer by layer

Refractory inorganic construction: Class 5 pure Nickel 200 conductor, overlapped phlogopite mica tapes, and dual alumino-silicate ceramic fibre braids.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Flexible pure Nickel 200 conductorStranded pure annealed Nickel 200 (UNS N02200, Ni ≥ 99.2 %, ASTM B160 / IEC 60228 Class 5)Melting point +1453 °C; resists catastrophic oxidation and scaling up to +1000 °C
2Phlogopite mica dielectric barrierHelically lapped high-temperature phlogopite mica tapes with ≥ 50 % overlapMaintains 300/500 V AC breakdown strength at red-heat temperatures
3Alumino-silicate ceramic fibre wallSpun Al₂O₃-SiO₂ refractory ceramic yarn / high-silica fibre insulation layerWithstands +1000 °C continuous (+1200 °C peak) where E-glass softens at +550 °C
4Refractory ceramic outer braidTightly braided alumino-silicate ceramic yarn with optional fugitives-free handling finishProvides thermal shock and mechanical abrasion protection inside furnace refractory brickwork

CERAFIL CN8 (0.5–6.0 mm²)

Pure Nickel 200 + mica + ceramic fibre control and heater lead wire for +800/+1000 °C

CERAFIL CN8 Power (10–25 mm²)

Heavy-gauge pure Nickel 200 furnace bus and heating-element feeder cable

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic Wire. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage (Uo/U)
300/500 V AC (dry high-temperature atmosphere)
Dielectric test voltage
1,500 V AC rms (50 Hz, dry)
Ni 200 resistivity at +20 °C
0.096 Ω·mm²/m (approx. 5.5 × copper)
Insulation resistance (+20 °C)
≥ 200 MΩ·km dry

Thermal

Continuous operating temp.
-60 °C to +800 °C (+1000 °C ceramic grade)
Short-term peak temperature
+1200 °C excursion (Ni melting point +1453 °C)
Thermal shock endurance
Direct quench from +800 °C to +20 °C air

Mechanical

Conductor stranding
IEC 60228 Class 5 flexible pure Nickel 200
Cross-section range
0.5 mm² to 25 mm² single-core
Min. bending radius (fixed)
10 × overall wire diameter

Resistance

Combustibility
100 % inorganic non-combustible (IEC 60332-1)
Halogen & smoke emission
Zero halogen, zero smoke (inorganic mineral)
Moisture sensitivity
For dry high-temperature zones; seal cold ends

Reference standards

Conductor material standard
ASTM B160 / DIN 17740 (Ni 200 / 2.4066)
Conductor stranding standard
IEC 60228 Class 5 geometry
RoHS & REACH
RCF-free, asbestos-free, RoHS 3 compliant

Identification

Outer braid colour
Natural off-white / cream ceramic fibre
Spool identification
TEBAOFLEX CERAFIL CN8 NI200 +800/+1000°C
Customs tariff (HS)
8544.49

Sizes

10 standard configurations (CERAFIL CN8)

Engineering dimensions, conductor stranding, mass and electrical ratings for CERAFIL CN8 per ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic Wire.

Dimensions & weights
Order designationCross-section / sizeConductor buildWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard CERAFIL CN8 configurations
CERAFIL CN8 1×0.5 (20 AWG)0.5 mm² (20 AWG)16×0.20 mm Ni 2001.103.104.816.031
CERAFIL CN8 1×0.75 (18 AWG)0.75 mm² (18 AWG)24×0.20 mm Ni 2001.103.407.220.034
CERAFIL CN8 1×1 (17 AWG)1 mm² (17 AWG)32×0.20 mm Ni 2001.103.609.624.036
CERAFIL CN8 1×1.5 (16 AWG)1.5 mm² (16 AWG)30×0.25 mm Ni 2001.204.1014.431.041
CERAFIL CN8 1×2.5 (14 AWG)2.5 mm² (14 AWG)50×0.25 mm Ni 2001.204.6024.044.046
CERAFIL CN8 1×4 (12 AWG)4 mm² (12 AWG)56×0.30 mm Ni 2001.305.4038.465.054
CERAFIL CN8 1×6 (10 AWG)6 mm² (10 AWG)84×0.30 mm Ni 2001.306.1057.691.061
CERAFIL CN8 1×10 (8 AWG)10 mm² (8 AWG)80×0.40 mm Ni 2001.407.4096.0145.074
CERAFIL CN8 1×16 (6 AWG)16 mm² (6 AWG)126×0.40 mm Ni 2001.508.80153.6218.088
CERAFIL CN8 1×25 (4 AWG)25 mm² (4 AWG)196×0.40 mm Ni 2001.6010.50240.0326.0105
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal engineering values for CERAFIL CN8 subject to standard manufacturing tolerances per ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic Wire.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
Dielectric spark / high-voltage withstand test100 % in-line spark and AC/DC dielectric withstand per ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic WireEvery manufactured length
Conductor DC resistance & continuity checkWithin maximum 20 °C resistance limit specified for CERAFIL CN8Every spool or drum length
Sample tests
Thermal ageing & dimensional verificationWall thickness, concentricity and post-ageing elongation per ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic WirePer production batch
Flame, outgassing or high-temperature enduranceQualified to ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic Wire thermal and environmental performance criteriaType qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

ASTM B160 Pure Nickel 200 & IEC 60228 Class 5 Ultra-High-Temp Ceramic WireCE (2014/35/EU) & RoHS 3 (2015/863/EU) CompliantREACH SVHC & Halogen/Asbestos Compliance Verified

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX CERAFIL CN8 1×2.5 MM² NI200 300/500V +800°C
Delivery form
Precision spools, coils or export wooden drums
Standard lengths
50 m · 100 m · 500 m · 1000 m (or cut harnesses)
MOQ
100 m (stock sizes) · 300–500 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFCERAFIL CN8 Ceramic-Fibre Ultra-High-Temperature Nickel Conductor – technical datasheet10 sizes · construction, technical data, approvalsXLSXCERAFIL CN8 spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why must CERAFIL CN8 use a pure Nickel 200 conductor instead of nickel-plated copper above +450 °C?
Above +450 °C, copper atoms rapidly diffuse through a thin nickel plating (Kirkendall effect), causing severe oxidation and embrittlement of the copper core. Pure Nickel 200 (≥ 99.2 % Ni, melting point +1453 °C) forms a stable protective oxide film and operates continuously up to +800/+1000 °C.
How do I size CERAFIL CN8 given pure nickel's higher electrical resistance?
Pure Nickel 200 has a resistivity of ~0.096 Ω·mm²/m at +20 °C (about 5.5 times higher than copper) and a positive temperature coefficient at furnace temperatures. Always size the conductor cross-section using the +600/+800 °C derated current column in our electrical table.
Why does CERAFIL CN8 use alumino-silicate ceramic fibre instead of standard E-glass braid?
Standard E-glass fibres begin to soften, devitrify, and lose mechanical strength around +500 °C to +550 °C. Alumino-silicate (Al₂O₃-SiO₂) and high-silica ceramic yarns retain textile strength continuously at +800 °C to +1000 °C (+1200 °C peak).
How should CERAFIL CN8 be terminated at the heating element and cold junction?
Use pure nickel ring terminals, high-temperature nickel-chromium screw clamps, or TIG/spot welding at the hot end, and seal the cold-end braid transition with high-temperature ceramic cement or silicone sleeving outside the furnace.

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CERAFIL CN8 Ceramic-Fibre Ultra-High-Temperature Nickel Conductor

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