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Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Specifications
Brand Name :
Victory
Model Number :
Cr30Ni70
Certification :
CE
Place of Origin :
China
MOQ :
5
Payment Terms :
L/C, T/T, Western Union, MoneyGram
Supply Ability :
300 tons per month
Delivery Time :
5-21 days
Packaging Details :
Spool package with Carton box, Coil package with polybag for Resistance wire
Max. continuous service temp. of element(ºC) :
1100
Melting Point :
1390
Resistivity :
1.04±0.05
Density(g/cm3) :
7.9
Thermal conductivity (KJ/m·h·ºC) :
43.8
Coefficient of lines expansion(α×10-6/ºC) :
19
Melting point approx.( ºC) :
1390
Elongation at rupture(%) :
>20
Description

Cr30Ni70 Nichrome Wire: Exceptional Thermal Stability for Long-Lasting Industrial Heating

NiCr Series

Cr30Ni70 nickel-chromium alloy wire is a high-performance resistance heating material with excellent high-temperature stability and oxidation resistance, and is widely used in the field of industrial heating. Its chemical composition mainly includes 70% nickel and 30% chromium, with a melting point of about 1380℃, a maximum operating temperature of up to 1250℃, a resistivity of 1.18±0.05μΩ·m (at 20℃), a tensile strength of 810 MPa, and an elongation of 30%, showing good mechanical properties.
The high-temperature stability of Cr30Ni70 alloy wire makes it not easy to deform during long-term use and has a long service life. In addition, the alloy wire also has good weldability and forming ability, suitable for manufacturing heating elements of various shapes.
Cr30Ni70 alloy wire is widely used in industrial furnaces, electric heating elements, heat treatment equipment, and other fields that require high-temperature stability, especially in reducing atmospheres and high-temperature oxidizing environments. Its excellent performance makes it an indispensable material in industries such as aerospace, energy, and metallurgy.

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 0.44 0.461 0.494 0.5 0.5
J/g.℃
Thermal conductivity 60.3 45.2 45.2 43.8 43.8
KJ/m.h℃
Coefficient of lines expansion 18 17 17 19 19
a×10-6/
(20~1000℃)
Micrographic structure Austenite Austenite Austenite Austenite Austenite
Magnetic properties Non-magnetic Non-magnetic Non-magnetic Weak magnetic Weak magnetic
Micrographic structure Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
Magnetic properties Magnetic Magnetic Magnetic Magnetic Magnetic 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

Size Range
Wire
dia 0.03-7.5mm
 Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
dia 8.0-12.0mm
 Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Ribbon
(0.05-0.35)*(0.5-6.0)mm
 Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Strip
(0.50-2.5)*(5-180)mm
 Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Rod
8-50mm
 Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating

  • Feature

High temperature performance:
It has excellent high temperature strength and oxidation resistance, and can work stably at 1000°C or even higher.
The chromium oxide protective film formed on the alloy surface can effectively prevent further oxidation.
Corrosion resistance:
It has strong corrosion resistance to chemical media such as acids and alkalis, especially in high temperature corrosion environments.
Thermal stability:
It has a low thermal expansion coefficient (about 14×10⁻⁶/K) and good dimensional stability when the temperature changes.
It has a moderate specific heat capacity (about 0.4 J/g·K), which is suitable for applications that respond quickly to temperature changes.
Resistance performance:
The room temperature resistivity is about 1.1-1.3×10⁻⁶Ω·m, and the resistivity changes little at high temperatures.
Processing performance:
Although the hardness is high, it can be finely processed through appropriate heat treatment and processing technology.

  • Q&A

Which industries is Cr30Ni70 wire suitable for?
Cr30Ni70 wire is widely used in electric heating, chemical industry, metallurgy, aerospace and other industries, especially for high-temperature furnaces, electric heating elements, chemical reactors and aerospace high-temperature parts.
What are its welding methods?
Cr30Ni70 wire welding methods include argon arc welding (TIG), metal arc welding (MIG) and laser welding, etc. The specific selection depends on the thickness of the workpiece and the welding requirements.
How is the oxidation resistance of Cr30Ni70 wire?
Cr30Ni70 wire has excellent oxidation resistance and can form a dense chromium oxide protective film at high temperature to prevent further oxidation. At 1000℃, its oxidation rate is extremely low, which is suitable for long-term high-temperature use.

Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial HeatingCr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating

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Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating

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Product Detail
Brand Name :
Victory
Model Number :
Cr30Ni70
Certification :
CE
Place of Origin :
China
MOQ :
5
Payment Terms :
L/C, T/T, Western Union, MoneyGram
Contact Supplier
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating
Cr30Ni70 Nichrome Wire Exceptional Thermal Stability for Long Lasting Industrial Heating

Changzhou Victory Technology Co., Ltd

Verified Supplier
2 Years
jiangsu, changzhou
Since 2008
Business Type :
Manufacturer, Distributor/Wholesaler, Trading Company, Seller
Main Products :
FeCrAl Wire, Nichrome Alloy, FeCrAl Alloy
Total Annual :
100-100000
Employee Number :
100~150
Certification Level :
Verified Supplier
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