Facing frequent heater element failures in a high-demand pharmaceutical plant, engineers turned to NiCr 30:20 Round Bars to deliver consistent heat, strong oxidation resistance, and dependable mechanical performance. These bars have since become a trusted component for heating element manufacturers and procurement teams in chemical processing, marine, oil & gas, and power generation sectors, ensuring extended asset life and operational reliability.
Table of Contents:
NiCr 30:20 (DIN 17470, W.Nr. 1.4860) is a nickel-chromium-iron alloy with approximately 30% nickel and 20% chromium, providing high electrical resistivity, excellent weldability, and stability at temperatures up to 1050°C. This alloy is non-magnetic, with good ductility and strong resistance to oxidation and thermal fatigue, making it ideal for manufacturing resistant heating elements, electric furnace parts, convective heaters, and de-icing cables.
Globally supplied in bright annealed bars, wire, and specialized shapes, NiCr 30:20 is available in diameters from 0.06 mm (wire) to 60 mm (bars), complete with mill test certifications aligned with ASTM and DIN standards. Hardware suppliers, OEMs, and fabricators rely on its consistent chemistry and reliable mechanical properties for demanding industrial heating solutions.
In comparison to NiCr 60:15 or 80:20, NiCr 30:20 offers higher chromium content, enhancing oxidation resistance while maintaining excellent heating properties ideal for applications demanding both durability and thermal efficiency.
High-quality NiCr 30:20 Round Bars ready for industrial use.
Specification Overview
| Grade | NiCr 30:20 (W.Nr. 1.4860, DIN 17470) |
|---|---|
| Standards | ASTM B344, DIN 17470/17742, ISO compliant |
| Diameter Range | Wire: 0.06–1.0 mm, Bars: 3–60 mm |
| Finish | Bright annealed, drawn, peeled, polished |
| Delivery | Certified with mill test reports, ISO traceability |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | — |
| Werkstoff / EN number | 1.4860 |
| Density | 7.90 g/cm3 |
Identifiers and physical constants for Nichrome 30/20. A dash means no such designation is published for this grade.
Stock & Product Availability
NiCr 30:20 Round Bars and wires are stocked worldwide to meet the industrial supply demands of chemical, marine, oil & gas, and power sectors, supporting OEM and maintenance needs with quality-certificated inventory.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 28.0 | — |
| Manganese (Mn) | — | 1.0 |
| Iron (Fe) | — | Balance |
| Silicon (Si) | 1.8 | 3.0 |
| Chromium (Cr) | 18 | 22 |
| Carbon (C) | — | 0.10 |
| Aluminium (Al) | — | 0.30 |
| Copper (Cu) | — | 0.50 |
Composition limits for Nichrome 30/20. 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) | ≥600 |
| Elongation (%) | 18–30 (depending on diameter) |
| Electrical Resistivity (Ω·mm²/m) | 1.10–1.25 |
| Operating Temp Max (°C) | 1050 |
Applications & Benefits
- Heating elements for electric furnaces and industrial ovens
- Resistor wire in thermal control equipment
- De-icing cables and heating tapes for aerospace and automotive
- Furnace parts and industrial heating applications
- High temperature fans, heaters, and convective heating components
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 30:20 Round Bars offer proven performance and flexibility for heating elements and industrial applications up to 1050°C across chemical, marine, pharma, oil & gas, and power sectors. Are your heating systems optimized with these reliable, certified alloys?