Cr20Ni80 Alloy Wire With High Nickel Content For Excellent High
Temperature Resistance
Introduction:
Cr20Ni80 alloy wire is a high-temperature alloy wire, mainly
composed of 20% chromium and 80% nickel. It has good high
temperature resistance and can provide stable resistance
characteristics in high temperature environments. This alloy wire
is widely used in electric furnace heating elements, resistance
welding, heaters, hot mist generators and other fields.
Mechanical behavior:
The mechanical properties of Cr20Ni80 alloy wire can be adjusted
through cold working.
Cold working refers to the process of plastic deformation of alloy
wire at room temperature. Common cold working methods include
drawing, rolling and bending. Through cold working, the shape, size
and mechanical properties of the alloy wire can be changed.
Specifically:
1. Drawing: The process of drawing alloy wire through a die can
reduce its cross-sectional area and increase its length. This
causes the alloy wire to harden, increasing its strength and
hardness but also reducing its ductility.
2. Calendering: The alloy wire is pressed through equipment such as
a rolling mill to change its cross-sectional shape and size. During
the calendering process, the alloy wire will undergo cold
deformation, making it hard and improving strength and hardness.
3. Bending: By bending alloy wire, you can change its shape and
increase its ductility. However, when bending at a large angle, it
may cause breakage or surface cracks of the alloy wire.
| 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 |
Parameters:
Chemical composition (mass fraction):
Chromium (Cr): about 20%
Nickel (Ni): about 80%
Density: approximately 8.4 g/cm3.
Melting point: approximately 1400 degrees Celsius.
Resistivity: approximately 1.09-1.13×10^-6 Ω·m (at room temperature).
Temperature coefficient: approximately 0.0004-0.0005 1/degrees Celsius (within room
temperature range).
Maximum operating temperature: Typically up to 1000 degrees Celsius, depending on specific
application and environmental conditions.
Packaging:
Sturdy cardboard boxes are used for packaging NiCr Alloy.
Each box has dimensions of approximately 26 cm (length) x 26 cm
(width) x 30 cm (height).
The boxes are designed to provide protection to the contents during
transportation.
A plastic wrap is used to seal the boxes, ensuring that the
contents are shielded from dust and moisture.
The boxes are labeled with important information, including the
product name, quantity, and destination.
contact us
email:victory@dlx-alloy.com
Oem service:
Welcome customized size
We are experience factory for OEM&ODM service
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
FAQ:
What is the resistivity of Cr20Ni80 alloy wire?
The resistivity of Cr20Ni80 alloy wire is about 1.09-1.13×10^-6 Ω·m
(at room temperature).
What is the melting point of Cr20Ni80 alloy wire?
The melting point of Cr20Ni80 alloy wire is about 1400 degrees
Celsius.
What is the tensile strength of Cr20Ni80 alloy wire?
The tensile strength of Cr20Ni80 alloy wire is usually between
400-600 MPa.
