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Products Description
Nichrome Wire Nickel Chrome Resistance Heating Wire Cr20Ni30 For Heater
Cr20Ni30 resistance wire is a special alloy steel that meets the GB/T 1234-2012 standard and is known for its high resistivity and low resistance temperature coefficient. This alloy is composed of approximately 20% chromium and 30% nickel, providing good corrosion resistance, stable electrical resistance, and moderate mechanical strength. The maximum working temperature of Cr20Ni30 resistance wire is 800 ℃, which is suitable for manufacturing various electric heating elements and general resistance elements. It is widely used in electronic equipment, heat treatment equipment, and other industrial fields.
Parameter
Nichrome series: Cr10Ni90, Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni30, Cr20Ni35
Performance / material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
Composition | 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 | |
Maximum temperature℃ | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
Meltiing point ℃ | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
Density g/cm3 | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Resistivity at 20℃ (μΩ·m) | -- | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | |
Elongation at rupture | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
Specific heat (J/g.℃) | -- | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | |
Thermal conductivity (KJ/m.h℃) | -- | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
Coefficient of lines expansion a×10-6/(20~1000℃) | -- | 18 | 17 | 17 | 19 | 19 | |
Micrographic structure | -- | Austenite | Austenite | Austenite | Austenite | Austenite | |
Magnetic properties | -- | Non-magnetic | Non-magnetic | Non-magnetic | Weak magnetic | Weak magnetic | |
Shape | Size (mm) |
Wire | 0.05-7.5 |
Rod | 8-50 |
Ribbon | (0.05-0.35)*(0.5-6.0) |
Strip | (0.5-2.5)*(5-40) |
For more details, pls directly contact us.
Feature
High resistivity and low resistance temperature coefficient ensure that the resistance value changes less with temperature.
Good corrosion resistance and oxidation resistance, suitable for use in harsh environments.
Moderate mechanical strength, able to withstand certain external forces and vibrations.
Advangate
Stable resistance performance, suitable for precise resistance measurement and control.
Long service life, able to withstand repeated heating and cooling cycles.
Good processing performance can be made into different shapes to meet various application needs.
Application
Heating elements for household appliances such as electric ovens, kettles, etc.
Industrial electric furnaces and heat treatment equipment, such as periodic heat treatment furnaces.
Temperature sensors and other precision resistance components.
Used for manufacturing electric heating elements working below 800 ℃.
Used as a heating element in specific industrial heat treatment processes.
Q&A
Q: What is the maximum working temperature of Cr20Ni30 resistance wire?
A: The maximum working temperature of Cr20Ni30 resistance wire is 800 ℃, which is suitable for producing heating elements used below 800 ℃.
Q: What is the approximate resistivity of Cr20Ni30 alloy at 20 ° C?
A: The resistivity of Cr20Ni30 alloy is approximately 1.04 at 20 ° C μ Ω · m, the specific value may vary depending on the size and condition of the wire.
Q: What industrial applications are Cr20Ni30 resistance wires commonly used for?
A: Cr20Ni30 resistance wire is commonly used in periodic heat treatment furnaces, such as track heating devices, tempering furnaces, as well as electric heating wires for electric heating tubes and household electric heaters.
E-mail: Info@hulkalloy.com
Mobile: 0086 13852926463
Tel: 0086 13852926463
Whatapps: 0086 13852926463
Add: Renli Village, Fangxian Town, Danyang City, Jiangsu Province, China
