In a major global marine repair yard, repeated failures of low-grade alloy elements in aggressive brine heaters prompted high maintenance costs and unpredictable shutdowns. The solution came with NiCr 80:20 Round Bars, trusted for their unmatched electrical consistency, durability at high temperatures up to 1200°C (2192°F), and robust oxidation resistance. Today, these bars are standard for engineers and procurement heads in process, chemical, marine, oil & gas, pharma, and power applications, reliably extending service life and maximizing uptime.
Table of Contents:
NiCr 80:20 (UNS N06023, W. Nr. 2.4869) is an austenitic nickel-chromium alloy, long recognized for delivering stable resistance properties and mechanical strength in heating elements, furnace components, resistor systems, and industrial wire products. With 80% nickel and 19–21% chromium, plus excellent room-temperature ductility and weldability, it is an economical and proven alternative where traditional stainless steels and copper-base alloys fail under heat or corrosive attack.
Supplied globally in bright, annealed bars and wire forms from 3mm and up, NiCr 80:20 Round Bars can be custom produced to tight tolerances for high-power heaters, resistor grids, and demanding chemical production equipment. Hardware suppliers and OEM manufacturers rely on traceable, ISO 9001-certified batches that meet stringent mechanical and metallurgical standards, with export packing and rapid dispatch options.
Compared with plain stainless grades, NiCr 80:20 Round Bars deliver superior thermal stability, consistent resistivity, and lower lifecycle costs for industrial heating and corrosion-prone equipment. Use cases range from plastic mold die heaters and soldering irons to high-pressure process lines, with proven cost savings and safety record across a variety of sectors.
High-quality NiCr 80:20 Round Bars ready for industrial use.
Specification Overview
| Grade | NiCr 80:20 (UNS N06023, W. Nr. 2.4869) |
|---|---|
| Standards | ASTM B344, DIN 17470/17742 |
| Diameter Range | ≥3mm (bars), wires, mesh, and custom forms |
| Finish | Bright, annealed, drawn, ground |
| Delivery | Export-ready packaging, full MTC, ISO 9001 traceability |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N06023 |
| Werkstoff / EN number | 2.4869 |
| EN designation | NiCr 80 20 |
| Density | 8.3 g/cm3 |
| Melting range | 1400 °C |
| Electrical resistivity (20 °C - per DIN 17470) | 112 µΩ·cm |
| Electrical resistivity (20 °C - per ASTM B 344) | 108 µΩ·cm |
| Thermal conductivity | 14.6 W/m·K |
| Specific heat (20 °C) | 420 J/kg·K |
| Coefficient of expansion (200 °C) | 14.0 µm/m·°C |
| Modulus of elasticity | 200 kN/mm² |
| Maximum operating temperature in air (as heating element) | 1200 °C |
| Maximum operating temperature in air (as resistance alloy) | 600 °C |
| Rod and bar specification | ASTM B344 |
Identifiers and physical constants for Nichrome 80/20. A dash means no such designation is published for this grade.
Stock & Product Availability
NiCr 80:20 Round Bars are stocked for rapid delivery in all popular diameters and wire gauges, plus custom sizes supporting quick turnarounds for marine, chemical, and energy maintenance as well as OEM production.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Iron (Fe) | — | 1 |
| Chromium (Cr) | 19 | 21 |
| Nickel (Ni) | — | Balance |
| Carbon (C) | — | 0.15 |
| Manganese (Mn) | — | 1.0 |
| Silicon (Si) | 0.75 | 1.75 |
| Others | — | 0.01 |
Composition limits for Nichrome 80/20. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength (MPa) | ≥650 |
| Elongation (%) | ≥20 (up to 25 for larger dims) |
| Max. Service Temp (°C) | up to 1200 (2192°F) |
| Electrical Resistivity (Ω∙mm2/m) | 1.12–1.17 (stable to 1200°C) |
| Thermal Conductivity (W/m∙K) | 15.0 |
| Specific Heat (kJ/kg∙K) | 0.42–0.50 |
| Thermal Expansion (10⁻⁶/K) | 15–17 (over 20 to 1200°C) |
Applications & Benefits
- Chemical: heaters, vaporizer rods, control resistors, furnace elements
- Marine: brine heaters, wire mesh conveyor, exhaust resistors
- Oil & Gas: heating lines for process/reactor start-up, downhole sensors
- Pharma: autoclave elements, sterilizer grids, process temp control
- Power: high-power cartridge-type heaters, generator resistor banks
- OEM/Fabrication: wire-wound control resistors, soldering irons, mesh belts
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
NiCr 80:20 Round Bars deliver unmatched performance in chemical, marine, oil & gas, pharma, and power sectors where stable resistance, high temperature endurance, and certified reliability are vital. Are you ready to future-proof your process assets with this proven alloy?