Nichrome 80 Ni80Cr20 Electrical Resistance Alloy Wire and Strip
Nichrome 80 Alloy Overview
Nichrome 80 (Ni80Cr20) is a nickel-chromium electrical resistance alloy used for heating elements and resistance components. Its combination of high resistivity, oxidation resistance, hot strength and form stability supports service in household appliances, industrial furnaces and precision heating systems.
The maximum continuous element temperature in air can reach approximately 1200°C, but the allowable operating temperature depends on wire or strip dimensions, atmosphere, surface load, thermal cycling and element design. A protective chromium-oxide layer develops during suitable high-temperature service.
| Identification | Reference |
|---|---|
| Nominal composition | Nickel 80% / Chromium 20% |
| UNS designation | N06003 |
| W.Nr. | 2.4869 |
| Common product specifications | ASTM B344 and ASTM B267, subject to product form and purchase requirements |
| Nominal melting point | Approximately 1400°C |
| Nominal resistivity at 20°C | Approximately 1.09 Ω·mm²/m; resistance per unit length varies with cross-sectional area and temperature |
Nichrome 80 Product Specification
| Item | Supply Reference |
|---|---|
| Alloy designation | Ni80Cr20 / UNS N06003 / W.Nr. 2.4869 |
| Nominal composition | Approximately 80% nickel and 20% chromium; final acceptance follows the ordered specification |
| Available forms | Round wire, fine wire, ribbon / flat wire and strip |
| Nominal resistivity at 20°C | Approximately 1.09 Ω·mm²/m |
| Maximum continuous element temperature in air | Up to approximately 1200°C; actual limit depends on dimensions, atmosphere, loading and element design |
| Condition and surface | Bright, oxidized or customer-specified condition subject to size and manufacturing route |
Supply Forms and Custom Processing
| Product Form | Production Review Information |
|---|---|
| Round wire | Diameter, tolerance, coil or spool weight, surface condition and required resistance |
| Ribbon / flat wire | Thickness, width, edge condition, camber and coil dimensions |
| Strip | Thickness, width, condition, slit edge and coil inside diameter |
| Finished heating parts | Drawing, electrical load, target resistance, cold dimensions and operating atmosphere for feasibility review |
Resistance per unit length is not a fixed alloy value. For preliminary design, R = ρL/A. Final element design should also account for temperature factor, heat dissipation, cycling and connection design.
Nichrome 80 Wire Current and Temperature Reference
The following values are reference data for the listed wire sizes. Actual current capacity and element temperature depend on installation, heat dissipation, atmosphere and duty cycle; final design verification is required.
| Wire AWG | Wire Dia. | Ohms / Foot | 400°F | 600°F | 800°F | 1000°F | 1200°F | 1400°F | 1600°F |
|---|---|---|---|---|---|---|---|---|---|
| 30 | 0.010 | 6.50 | 0.875 A | 1.16 A | 1.43 A | 1.74 A | 2.06 A | 2.43 A | 2.81 A |
| 32 | 0.008 | 10.55 | 0.650 A | 0.860 A | 1.08 A | 1.32 A | 1.56 A | 1.82 A | 2.09 A |
| 34 | 0.0063 | 16.66 | 0.493 A | 0.658 A | 0.820 A | 0.978 A | 1.16 A | 1.34 A | 1.54 A |
| 36 | 0.005 | 25.12 | 0.382 A | 0.506 A | 0.623 A | 0.732 A | 0.872 A | 0.998 A | 1.13 A |
| 40 | 0.0031 | 66.29 | 0.230 A | 0.300 A | 0.360 A | 0.410 A | 0.491 A | 0.550 A | 0.610 A |
| 48 | 0.00124 | 454.0 | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
Discuss Wire Size and Resistance Requirements
Nichrome 80 Applications
| Application Area | Typical Components |
|---|---|
| Household heating | Irons, water heaters, toasters and compact resistance heaters |
| Industrial heating | Furnace elements, cartridge heaters, metal-sheathed tubular elements and plastic-mould heating |
| Electronic and control equipment | Wire-wound resistors, potentiometers, pressure-transducer components and lead wire |
| Specialized heating | Soldering equipment, medical diagnostic devices, aerospace systems and precision thermal processes |
SASA Alloy supplies Nichrome 80 wire, ribbon and strip according to the requested dimensions, resistance requirement, surface condition, inspection scope and packing. Operating temperature, atmosphere, electrical load and certification requirements should be provided with the inquiry.
Quality Inspection and Documentation
| Inspection Item | Available Review |
|---|---|
| Material verification | Chemical composition and grade identification according to the agreed specification |
| Dimensions | Diameter or thickness, width, tolerances, coil dimensions and unit weight |
| Electrical properties | Resistivity or resistance-per-length requirement at an agreed reference temperature |
| Surface inspection | Visual examination for cleanliness, oxidation, scratches and edge condition |
| Documents | Inspection certificate, test results, marking and traceability requirements should be stated with the order |
Packaging and Export Delivery
| Wire | Spools or coils selected according to diameter, unit weight and unwinding requirement |
| Ribbon and strip | Coil protection, interleaving where required, moisture barrier and reinforced outer packing |
| Identification | Alloy grade, dimensions, heat / batch reference, net weight and order number |
| Export shipment | Cartons, cases or pallets selected according to dimensions, weight and shipping route |
RFQ Confirmation Checklist
| Please Provide | Required Detail |
|---|---|
| Product form and dimensions | Wire diameter or ribbon / strip thickness × width |
| Electrical requirement | Target resistivity, resistance per metre or finished-element resistance |
| Operating conditions | Element temperature, atmosphere, duty cycle and expected service life |
| Quantity and packaging | Total weight, spool / coil weight and delivery destination |
| Quality requirements | Specification, certificate type, inspection and marking |
Request a Nichrome 80 Quotation
Send the product form, dimensions, target resistance, operating conditions and required quantity for quotation review.
