Nichrome wire is a highly versatile material that is widely used in
various industries due to its unique properties. It is composed of
nickel, chromium, and iron, which give it its non-magnetic alloy
characteristic. One of the key properties of nichrome wire is its
high resistivity, which means that it can resist the flow of
electrical current. This makes it an excellent choice for use in
electrical devices that require thermal action, such as heat guns
and industrial hair dryers.
In addition to its high resistivity, nichrome wire also has
excellent ductility after use and weldability. This means that it
can be easily shaped and formed into various shapes and sizes, and
can be easily welded together to form larger structures. As a
result, it is commonly used to manufacture heating elements for
laboratory and industrial electric furnaces, water heating systems,
high-value electrical resistors, heating cords, and cables.
Moreover, 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.
Overall, 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.
Nichrome wire has proven to be a highly useful material in various
industrial applications, and its importance in the manufacturing
industry cannot be overstated.
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.
