Nichrome wire is a non-magnetic alloy that is primarily composed of nickel, chromium, and iron. It is a highly useful material due to its unique properties, such as high resistivity and good oxidation resistance. The high resistivity of nichrome wire allows it to resist the flow of electrical current, which makes it an excellent choice for use in electrical devices that require thermal action, such as heat guns and industrial hair dryers.
Nichrome wire also has excellent ductility after use and weldability, which means that it can be easily shaped and formed into various shapes and sizes, and can be easily welded together to form larger structures. This makes it an ideal choice for manufacturing heating elements for laboratory and industrial electric furnaces, water heating systems, high-value electrical resistors, heating cords, and cables.
Furthermore, nichrome wire has good oxidation resistance, which allows it to withstand high temperatures and prevents it from corroding over time. This makes it an ideal choice for use in applications that require high-temperature resistance.
In conclusion, nichrome wire is a versatile and reliable material that is essential in many industries. Its unique combination of properties makes it an ideal choice for applications that require high-temperature resistance, electrical resistance, and ductility.
Size dimension range:
Wire: 0.01-10mm
Ribbons: 0.05*0.2-2.0*6.0mm
Strip: 0.05*5.0-5.0*250mm
NiCr series: Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, Cr20Ni30
| Performance material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 |
| Composición | Ni | 90 | Rest | Rest | 55.0～61.0 | 34.0～37.0 | 30.0～34.0 |
| Cr | 10 | 20.0～23.0 | 28.0～31.0 | 15.0～18.0 | 18.0～21.0 | 18.0～21.0 |
| Fe | － | ≤1.0 | ≤1.0 | Rest | Rest | Rest |
| Temperatura máxima℃ | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 |
| Punto de fusion ℃ | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 |
| Densidad g/cm3 | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 |
| Resistividad μΩ·m,20℃ | 0.76±0.05 | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 |
| Alargamiento a la ruptura | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 |
| Calor especifico J/g.℃ | － | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 |
| Conductividad térmica KJ/m.h℃ | － | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 |
| Coeficiente de expansión de líneas a×10-6/(20～1000℃) | － | 18 | 17 | 17 | 19 | 19 |
| Estructura micrográfica | － | Austenite | Austenite | Austenite | Austenite | Austenite |
| Propiedades magnéticas | － | Nonmagnetic | Nonmagnetic | Nonmagnetic | Weak magnetic | Weak magnetic |
| Form | Specification |
| Wire | Diameter=0.025mm~8mm |
| Flat wire | Width=0.40~6.0mm | Thick=0.03~0.50mm |
| Strip | width=8~250mm | Thick=0.05~3.0mm |
| Bar | Diameter=8~100mm | Long=50~1000 |
NiCr 80/20 is suitable for heating elements used for temperatures upto 1200°C. This is used for electrical cooking equipment, precison resistors. Oxidized wires of these alloys display better insulation properties.
NiCr 70/30 is suitable for heating elements used for temperatures upto 1230°C for industrial furnaces which have alternating oxidizing, or reducing atmosphere. This alloy has excellent corrosion resistance and long life in air and controlled atmospheres.
NiCr 60/15 is suitable for heating elements used for temperatures upto 1150°C. This is used for electrically heated equipment, high resistance and potientiometer resistors.
NiCr 30/20 is suitable for heating elements used for temperatures upto 1050°C. Inspite of relatively high Fe content, these alloys are resistant to oxidation and chemical corrosion. They are used for making heating elements of cooking equipment, heating cords and cables.
