80/20 Ni Cr Resistance Wire of DLX Alloy is an alloy used at operating temperatures up to 1200°C (2200°F). 80/20 Ni Cr Resistance Wire is also known as Nichrome / Nicrhrome V, Brightray C, Cronix 80, Nicrothal 80, Chromalloy, Chromel, and Gilphy 80. Its chemical composition gives good oxidation resistance, especially under conditions of frequent switching or wide temperature fluctuations. This makes it ideal for a wide variety of applications including heating elements in domestic and industrial appliances, wire-wound resistors, through to the aerospace industry.
Chemical Composition:
| Designations | Element | C | Si | Mn | P | S | Cr | Ni | Al | Cu | Fe |
Cr20Ni80 UNS N06003 W.Nr. 2.4869 | Min % | - | 0.5 | - | - | - | 19 | 75 | - | - | - |
| Max % | 0.15 | 2.00 | 1.00 | 0.02 | 0.015 | 21.00 | - | 0.30 | 0.50 | 1.00 |
DLX ALLOY Nichrome 80/20 materials come in the following sizes:
| Nichrome 80/20 | Finishing Surface State | Shape | Size Range |
| Bright/Oxidized/Sour white/Misty Surface Treatment Available | Round Wire | Dia 0.018mm to 7.5mm | |
| Flat wire | Width:0.3mm to 6.0mm/Thick:0.03mm to 0.35mm | ||
| Foil/Strip | Width:5mm to 200mm/Thick:0.08mm to 2.0mm | ||
| Rod/Bar | Dia 5.0mm to 150mm | ||
| Heating Spring | Customized as per drawing | ||
| Shaped Heating element | Customized as per drawing |
How to Calculate the Resistance per Meter of Nicrothal 80? The resistance is decided by the size, not related to the finishing surface and shape. DLX ALLOY Team is ready to help you confirm the sizes and resistance. We also list some main-size data in the graph below for your reference.
| Chromel 80/20 Round Wire Dia(mm) | Cross-Sectional Area(mm2) | Weight/Meter (g/m) | Resistance/Meter at 20°C |
| 0.018 | 0.000255 | 0.00211 | 3410 |
| 0.030 SWG49 | 0.000707 | 0.005868 | 1338 |
| 0.102 SWG42 | 0.007854 | 0.0652 | 127.7 |
| 0.508 SWG25 | 0.1963 | 1.6293 | 5.273 |
| 0.813 SWG21 | 0.5027 | 4.1724 | 2.136 |
| 1.219 SWG18 | 1.313 | 10.8979 | 0.79 |
| 1.626 SWG16 | 2.011 | 16.8924 | 0.52 |
Note: There are tolerances to sizes and resistance, please contact us for the exact range.
The Nichrome Working Conditions:
| Density | Electrical Resistivity at 20°C | Operating Temperature as Heating element | Operating Temperature as cutting or sealing | Melting Point | Coefficient of Expansion | Magnetic Properties |
| 8.31 g/cm³ | 108 microhm • cm | 1200°C | 300°C | 1400°C | 12.5 µm/m °C (20 – 100 °C) | Non-Magnetic |
However, in different applications, the conditions vary a lot. The surface treatment and Hardness of Nichrome material will also lead to quite different testing results. It is suggested to check with our engineers for immediate answers. Here we made a list of commonly asked questions about Ni80Cr20 wires:
Q：Compared with FeCrAl resistance wire, what is the advantage of Nichrome 80/20?
A: Nickel is much more anti-oxidation than Fe. The FeCrAl wire will be thinner after long-term use.
Q：What is the MOQ of Nichrome 80/20 wire?
A: MOQ is from 1kg to 20kg, depending on the sizes.
Q:What is the Production time?
A: Normal lead time is 7 to 10 days.
Q:How to get connect with your engineers for questions?
A: You may send emails directly or fill the form sheet. We will reply ASAP.
