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Product

ASTM B344 Ni80Cr20 (Cr20Ni80)ASTM B344 / DIN 17470Up to 690 V AC−60…+1200 °C

Ni80Cr20 Nickel-Chromium Austenitic Resistance Heating Alloy WireASTM B344 / DIN 17470 · Up to 690 V AC · -60 °C to +1200 °C industrial Ni80Cr20 construction

Ni80Cr20 Nickel-Chromium Austenitic Resistance Heating Alloy Wire (Ni80Cr20 (Cr20Ni80)) engineered to ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) for Up to 690 V AC service across -60 °C to +1200 °C, featuring austenitic 80ni-20cr resistance alloy core and

Approved

Outdoor & humid

Ozone, UV & moisture

Nominal conductor

Order designation: Ni80Cr20 (Cr20Ni80) Ø 1.00 mm
Max. overall Ø: 1.08 mm
Total weight ≈: 7.08 kg/km
Min. mandrel R: 5 mm
Nominal conductor: Ø 1.00 mm (AWG 18)

All sizes (10)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: Up to 690 V AC
Operating temp.: −60…+1200 °C
Min. bend radius: 3 × OD
Conductor: Austenitic
Outer layer: Self-healing
Standard: ASTM B344

Typical values for this cable type, based on ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) — confirmed in the datasheet and quotation for your order.

Application fit

Is Ni80Cr20 (Cr20Ni80) right for your machine?

Furnace, kiln & high-temp zone

Suitable

Engineered and verified for furnace kiln service in accordance with ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20).

Fixed installation

Suitable

Engineered and verified for fixed service in accordance with ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20).

Switchgear & control cabinet wiring

Suitable

Suitable for switchgear, control panels and equipment terminations within 3 × OD bend radius.

TBM gantry & advancing tunnel reel

With conditions

Use mechanical conduit or armoured protection where exposed to rock fall or crushing loads.

Typical machinesMetallurgical, Glass & Ceramic FurnacesHigh-Temperature Thermal ProcessingHeavy Industrial Kilns & OvensPower Generation & Petrochemical HeatersAutomated Assembly & Packaging Lines

Construction

Layer by layer

Shown: Ni80Cr20 (Cr20Ni80) (ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)) with austenitic 80ni-20cr resistance alloy core, self-healing cr₂o₃ protective oxide surface and self-healing cr₂o₃ protective oxide surface (2-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Austenitic 80Ni-20Cr resistance alloy core	Solid drawn Ni80Cr20 (Cr20Ni80 / 1.4861) nickel-chromium resistance heating alloyASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)
2	Self-healing Cr₂O₃ protective oxide surface	Adherent chromium-oxide (Cr₂O₃) high-temperature surface passivation layer (+1200 °C)ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)

Ni80Cr20 (Cr20Ni80) — Standard Execution

Built to ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) with austenitic 80ni-20cr resistance alloy core and

Ni80Cr20 (Cr20Ni80) — Custom Cross-Sections

Full range of metric mm² and AWG/kcmil conductor sizes per ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)

Ni80Cr20 (Cr20Ni80) — Export Drum Supply

Supplied with EN 10204 3.1 routine dielectric & conductor resistance test certificate

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / duty: Up to 690 V AC (ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20))
Conductor construction: Austenitic 80Ni-20Cr resistance alloy core — Solid drawn Ni80Cr20 (Cr20Ni80 / 1.4861) nickel-chromium resistance heating alloy
Primary insulation / dielectric: Self-healing Cr₂O₃ protective oxide surface — Adherent chromium-oxide (Cr₂O₃) high-temperature surface passivation layer (+1200 °C)

Thermal

Continuous operating temperature: −60…+1200 °C per ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)
Short-circuit / peak thermal limit: +160 °C to +250 °C (5 s adiabatic limit depending on dielectric class)
Minimum installation temperature: −5 °C (thermoplastic) / −25 °C (cross-linked or elastomer) / −40 °C (metallic)

Mechanical

Outer protection / covering: Self-healing Cr₂O₃ protective oxide surface — Adherent chromium-oxide (Cr₂O₃) high-temperature surface passivation layer (+1200 °C)
Minimum bending radius: 3 × OD (installed / static routing)
Layer count & geometry: 2 concentric/structural layers verified by cross-section inspection

Resistance

Environmental & chemical durability: Engineered for industrial service in accordance with ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing product standard: ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20)
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: Ni80Cr20 (Cr20Ni80)
Customs tariff (HS): 8544.49 / 8544.60 / 7614.10

Sizes

10 standard Ni80Cr20 (Cr20Ni80) winding & resistance wire dimensions

Precision drawn and insulated to ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) in Grade 1 / Grade 2 builds and rectangular profiles.

Nominal conductor diameter, overall Ø & weight
Order designation	Nominal conductor	Max. overall Ø mm	Weight ≈ kg/km	Min. mandrel R mm
Ni80Cr20 (Cr20Ni80) Standard Precision Winding Schedule (−60…+1200 °C)
Ni80Cr20 (Cr20Ni80) Ø 0.25 mm	Ø 0.25 mm (AWG 30)	0.29	0.45	2
Ni80Cr20 (Cr20Ni80) Ø 0.40 mm	Ø 0.40 mm (AWG 26)	0.45	1.14	2
Ni80Cr20 (Cr20Ni80) Ø 0.63 mm	Ø 0.63 mm (AWG 22)	0.69	2.82	3
Ni80Cr20 (Cr20Ni80) Ø 0.80 mm	Ø 0.80 mm (AWG 20)	0.87	4.54	4
Ni80Cr20 (Cr20Ni80) Ø 1.00 mm	Ø 1.00 mm (AWG 18)	1.08	7.08	5
Ni80Cr20 (Cr20Ni80) Ø 1.25 mm	Ø 1.25 mm (AWG 16)	1.34	11.00	6
Ni80Cr20 (Cr20Ni80) Ø 1.60 mm	Ø 1.60 mm (AWG 14)	1.70	18.10	8
Ni80Cr20 (Cr20Ni80) Ø 2.00 mm	Ø 2.00 mm (AWG 12)	2.11	28.20	10
Ni80Cr20 (Cr20Ni80) Ø 2.50 mm	Ø 2.50 mm (AWG 10)	2.62	44.10	13
Ni80Cr20 (Cr20Ni80) Ø 3.15 mm	Ø 3.15 mm (AWG 8)	3.28	70.00	16

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Supplied on precision PT25 / PT45 / PT90 / Din 355 conical and cylindrical winding spools per ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20).

DC resistance & dielectric breakdown voltage
Conductor size	Nominal R₂₀ Ω/km	Min. breakdown V AC	Thermal class
Ø 0.25 mm (0.049 mm²)	351.00	4,200	−60…+1200 °C
Ø 0.63 mm (0.312 mm²)	55.30	5,000	−60…+1200 °C
Ø 1.00 mm (0.785 mm²)	21.90	5,500	−60…+1200 °C
Ø 1.60 mm (2.011 mm²)	8.57	5,800	−60…+1200 °C
Ø 2.50 mm (4.909 mm²)	3.51	6,000	−60…+1200 °C

Tested in accordance with IEC 60851-5 / ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) routine dielectric and elongation test methods.

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.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor DC resistance & dimensional verification (ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20))	DC resistance at 20 °C and geometry within ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) class limits	Every manufactured drum / spool
Routine dielectric / spark / structural integrity test (ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20))	Zero breakdown or structural defect over full production length	Every manufactured drum / spool
Sample tests
Thermal aging, mechanical & material qualification (ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20))	Full compliance with ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) across −60…+1200 °C	Type qualification & periodic sample audit

Inspection certificate

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

Product approvals

ASTM B344 CompliantEN 10204 3.1 Routine Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX Ni80Cr20 (Cr20Ni80) <size> ASTM B344 Up to 690 V AC CE

Delivery form: Non-returnable fumigated wooden drums or precision DIN spools
Standard lengths: 500 m · 1000 m · 2000 m drums (custom cut lengths on request)
MOQ: 500 m (stock sizes) · 1000 m (custom production)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFNi80Cr20 Nickel-Chromium Austenitic Resistance Heating Alloy Wire – technical datasheet10 sizes · construction, technical data, approvals XLSXNi80Cr20 (Cr20Ni80) spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-21
Updated: 2026-10-21

FAQ

Questions engineers ask first

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

What governing standard and construction define Ni80Cr20 (Cr20Ni80) (Ni80Cr20 Nickel-Chromium Austenitic Resistance Heating Alloy Wire)?

Ni80Cr20 (Cr20Ni80) (Ni80Cr20 Nickel-Chromium Austenitic Resistance Heating Alloy Wire) is manufactured in accordance with ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20) for Up to 690 V AC service over -60 °C to +1200 °C. Its 2-layer construction comprises austenitic 80ni-20cr resistance alloy core, self-healing cr₂o₃ protective oxide surface.

What is the minimum bending radius and installation temperature for Ni80Cr20 (Cr20Ni80)?

The minimum installed bending radius for Ni80Cr20 (Cr20Ni80) is 3 × OD across its continuous operating temperature range of -60 °C to +1200 °C, ensuring mechanical and dielectric stability without conductor or insulation strain.

How are the concentric layers of Ni80Cr20 (Cr20Ni80) arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Austenitic 80Ni-20Cr resistance alloy core (Solid drawn Ni80Cr20 (Cr20Ni80 / 1.4861) nickel-chromium resistance heating alloy); (02) Self-healing Cr₂O₃ protective oxide surface (Adherent chromium-oxide (Cr₂O₃) high-temperature surface passivation layer (+1200 °C)).

What factory test certificates are supplied with Ni80Cr20 (Cr20Ni80)?

Every production drum or spool of Ni80Cr20 (Cr20Ni80) undergoes routine conductor DC resistance, dimensional and dielectric/integrity testing per ASTM B344 / DIN 17470 (1.4861 / CrNi 80 20), and is delivered with an EN 10204 3.1 factory test certificate.

Request a quote

Get an engineering quote for Ni80Cr20 (Cr20Ni80)

Your selection and application details are copied into the enquiry form below.

01Selected sizes

Use + Add next to a size or configuration.

02Reel & motion

Add your operating conditions here to include them in your enquiry.

Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

Ni80Cr20 (Cr20Ni80) Ni80Cr20 Nickel-Chromium Austenitic Resistance Heating Alloy Wire

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
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