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NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
Specifications
Brand Name :
Senphus
Model Number :
Cr30Ni70/NiCr7030/ХН70Ю
Certification :
ISO9001
Place of Origin :
China
MOQ :
5kg
Payment Terms :
T/T, D/P
Supply Ability :
30 Tons per day
Delivery Time :
3 days
Packaging Details :
Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated.
Place of Orig :
China
Name :
Cr30Ni70/NiCr7030/ХН70Ю
Type :
Ni-Cr-Fe alloys
Application :
Heating element and resistor
Color :
Shiny silver or dark gray
Density :
8.10
Resistivity at 20 ℃ :
1.18±0.05
Melting point（℃） :
1380
Thermal conductivity(KJ/mh ℃ ) :
45.2
Elongation at rupture（% ) :
>20
Description

NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю for Industrial Heating Elements and Resistance Applications in High-Temperature Environments

NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю) is a high-performance nickel-chromium alloy primarily composed of 30% chromium and 70% nickel. This alloy offers excellent high-temperature strength, corrosion resistance, and thermal stability, making it widely used in industrial heating elements, electrical resistance applications, and high-temperature environments. NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю) is a high-performance nickel-chromium alloy that offers exceptional oxidation and corrosion resistance, high-temperature stability, and mechanical strength. It is commonly used in heating elements, electrical resistors, thermocouples, and other high-temperature applications across industries such as aerospace, chemical processing, and power generation. Its ability to maintain performance in extreme conditions, combined with its excellent formability and weldability, makes it an ideal material for critical industrial applications.

Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys

Type



Performance

 Cr30Ni70 Cr15Ni60 Cr20Ni35 Cr20Ni80 Cr20Ni30 Cr25Ni20
Main Chemical composition Ni Rest 55.0-61.0 34.0-37.0 Rest 30.0-34.0 19.0-22.0
Cr 28.0-31.0 15.0-18.0 18.0-21.0 20.0-23.0 18.0-21.0 24.0-26.0
Fe ≤ 1.0 Rest Rest ≤ 1.0 Rest Rest
Max. continuous service temp. of element (℃) 1250 1150 1100 1200 1100 1050
Resistivity at 20 ℃(μΩm) 1.18±0.05 1.12±0.05 1.04±0.05 1.09±0.05 1.06±0.05 0.95±0.05
Density(g/cm3) 8.10 8.20 7.90 8.40 7.90 7.15
Thermal condyctivity (KJ/m·h·℃) 45.2 45.2 43.8 60.3 43.8 43.8
Coefficient of lines expansion (α×10-6/℃) 17.0 17.0 19.0 18.0 19.0 19.0
Melting point (approx.)(℃) 1380 1390 1390 1400 1390 1400
Elonation at rupture(%) ＞20 ＞20 ＞20 ＞20 ＞20 ＞20
Micrographic structure Austenite Austenite Austenite Austenite Austenite Austenite
Magnetic properties Non-magnetic Low-magnetic Low-magnetic Non-magnetic Low-magnetic Non-magnetic
Note:The various grades of electric resistance alloy material are blended with the amountof rare earth, titanium and other trace elements, to improve the processing performance andextend the period of the uselife.

Chemical Composition Wt.% Cr30Ni60 % Ni Fe C Si Mn P S Cr Al
Min 0.75 28
Max Rest 0.08 0.08 1.6 0.6 0.02 0.015 31 0.5

Key Features of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

  • Composition:

Nickle (Ni): Approximately 70% — provides excellent resistance to corrosion, oxidation, and high-temperature stability.

Chromium (Cr): Approximately 30% — enhances oxidation resistance and contributes to the alloy's high-temperature strength.

Other Elements: May contain trace amounts of manganese, iron, and silicon to improve mechanical properties and processability.

  • Corrosion and Oxidation Resistance:

Oxidation Resistance: The high chromium content enables the alloy to form a protective oxide layer, providing exceptional resistance to oxidation, even at temperatures up to 1200°C (2192°F).

Corrosion Resistance: Resistant to acids, alkalis, and saltwater, making it suitable for use in chemically aggressive environments.

Resistant to Scaling: Can withstand high-temperature exposure to air, reducing the risk of scaling or material degradation.

  • High-Temperature Performance:

Temperature Stability: Retains mechanical strength and integrity even at high temperatures, up to 1100-1200°C (2012-2192°F).

Thermal Expansion: Exhibits a low coefficient of thermal expansion, which makes it stable under temperature variations.

  • Mechanical Properties:

High Tensile Strength: Provides excellent mechanical strength at elevated temperatures.

Ductility: Exhibits good ductility and formability, making it suitable for bending, twisting, or other fabrication techniques.

Fatigue Resistance: Withstands thermal cycling and mechanical stress without compromising integrity.

  • Weldability and Fabrication:

Ease of Fabrication: Easily fabricated into wires, strips, or other forms for industrial applications.

Weldable: Can be welded using standard techniques like GTAW and GMAW.

Formability: Can be drawn into fine wires for use in heating elements or resistance applications.

Applications:

  • Heating Elements: Commonly used in electric resistance heating elements, such as those found in ovens, furnaces, and industrial heaters.
  • Electrical Resistors: Suitable for the manufacture of high-temperature resistors, such as in industrial furnaces, kiln components, and in electrical appliances.
  • Thermocouples: Employed as a thermocouple wire for temperature sensing in extreme environments.
  • Aerospace and Power Generation: Used in turbine components, heat exchangers, and other high-temperature systems.
  • Chemical Industry: Ideal for applications where high resistance to corrosive environments and high temperatures is required.

Advantages of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

  • High Temperature Resistance: Retains strength and stability even at extreme temperatures, making it ideal for heating elements and high-heat industrial applications.
  • Corrosion and Oxidation Resistance: Performs well in corrosive environments, offering long service life in chemical processing industries.
  • Excellent Mechanical Properties: Offers high tensile strength, ductility, and fatigue resistance.
  • Weldable and Formable: Easy to work with and fabricate into various forms for different industrial uses.
  • Versatile Application Range: Suitable for use in a wide range of high-temperature and corrosive applications, including heating systems, resistive elements, and electrical components.

Limitations of NiCr Alloy Wire (Cr30Ni70, NiCr7030, ХН70Ю):

  • Cost: The high nickel content increases the cost of the alloy compared to other metals and alloys with lower nickel content.
  • Work Hardening: The alloy may work harden during cold forming processes, requiring specialized techniques for fabrication.
  • Mechanical Stress: While it has good strength at high temperatures, it may not be suitable for applications that involve extreme mechanical stress or heavy loads.

Technical data of wires

Dia. (mm) Cross-sectional area (mm²) Weight/Meter (g/m) Resistance/Meter at 20 ℃ (Ω/m) Dia. (mm) Cross-sectional area (mm²) Weight/Meter (g/m) Resistance/Meter at 20 ℃ (Ω/m)
0.018 0.000255 0.002117 3410-4610 0.25 0.04909 0.4074 20.88-23.54
0.020 0.000314 0.002606 2940-3740 0.28 0.06158 0.5111 16.64-18.76
0.022 0.000380 0.003154 2440-3100 0.30 0.07069 0.5867 14.49-16.35
0.025 0.000491 0.004075 1880-2400 0.32 0.07548 0.6265 12.74-14.36
0.028 0.000616 0.005113 1530-1870 0.33 0.08553 0.7099 12.20-13.40
0.030 0.000707 0.005868 1338-1696 0.38 0.1134 0.9412 9.13-10.09
0.032 0.000804 0.006673 1180-1440 0.40 0.1257 1.0433 8.24-9.108
0.035 0.000962 0.007985 981-1200 0.41 0.132 1.0956 7.68-8.89
0.040 0.001257 0.01043 780.7-954.1 0.45 0.159 1.3197 6.51-7.196
0.045 0.00159 0.0132 594-726 0.50 0.1963 1.6293 5.273-5.829
0.050 0.001963 0.01629 499.6-610.6 0.55 0.2376 1.9721 4.518-4.994
0.055 0.00238 0.01975 407-477 0.60 0.2827 2.3464 3.797-4.197
0.063 0.00312 0.02590 321.41-377.31 0.65 0.3318 2.7539 3.235-3.575
0.070 0.00385 0.03196 260.5-305.9 0.70 0.3848 3.1938 2.789-3.083
0.080 0.005027 0.04172 199.5-234.1 0.75 0.4418 3.6669 2.43-2.686
0.090 0.006362 0.0528 157.6-185.0 0.80 0.5027 4.1724 2.136-2.36
0.100 0.007854 0.0652 127.7-149.9 0.85 0.5674 4.7094 1.891-2.091
0.110 0.009852 0.08177 105.5-123.9 0.90 0.6362 5.2805 1.687-1.865
0.120 0.01227 0.1018 88.67-104.1 0.95 0.7088 5.883 1.46-1.62
0.140 0.01539 0.1277 65.85-75.77 1.00 0.7854 6.5188 1.367-1.511
0.150 0.01767 0.1467 56.75-66.63 1.10 0.9503 7.8875 1.13-1.26
0.160 0.02011 0.01669 50.42-58.00 1.12 0.9852 8.1772 1.05-1.17
0.170 0.022700 0.1884 44.18-51.86 1.18 1.0936 9.0769 0.95-1.05
0.180 0.02545 0.2112 40.26-45.40 1.20 1.313 10.8979 0.79-0.87
0.190 0.02835 0.2353 35.37-41.53 1.30 1.327 11.0141 0.78-0.86
0.200 0.03142 0.2608 32.62-36.78 1.40 1.539 12.7737 0.70-0.77
0.212 0.035300 0.2930 28.41-33.35 1.50 1.767 14.6661 0.60-0.67
0.220 0.03801 0.3155 26.65-30.39 1.60 2.011 16.8924 0.52-0.58

The tolerance or wires diameter

Wires Dia.(mm) Tolerance
0.018-0.025 ±0.001
0.028-0.035 ±0.0015
0.040-0.055 ±0.002
0.070 ±0.0025
0.08-0.10 ±0.003
0.11-0.14 ±0.004
0.16-0.20 ±0.005
0.22-0.25 ±0.006
0.28-0.30 ±0.007
0.32-0.40 ±0.01
0.41-0.50 ±0.015
0.55-0.80 +0.02/-0.03
0.85-1.00 +0.02/-0.03
1.10-1.50 ±0.03
Note:special specification can be produced as per client's request.

Technical data of ribbon

Thickness × Width(mm) Resistance/meter(20 ℃) (Ω/m) Surface area/ohm (20℃) (cm2/Ω) Weight/meter (g/m) Surface area/meter (cm2/m)
0.09x2.5 5.27 9.84 1.72 51.8
0.08x0.2 74 0.0756 0.122 5.6
0.08x0.3 49.4 0.154 0.183 7.6
0.08x0.4 37 0.259 0.244 9.6
0.08x0.5 29.6 0.392 0.305 11.6
0.08x0.6 24.7 0.551 0.367 13.6
0.08x0.7 21.2 0.737 0.428 15.6
0.08x0.8 18.5 0.951 0.489 17.6
0.08x0.9 16.5 1.19 0.55 19.6
0.08x1.0 14.8 1.46 0.611 21.6
0.08x1.2 12.3 2.07 0.733 25.6
0.08x1.5 9.87 3.2 0.916 31.6
0.08x1.8 8.23 4.57 1.1 37.6
0.08x2.0 7.4 5.62 1.22 41.6
0.07x0.2 84.6 0.0638 0.107 5.4
0.07x0.3 56.4 0.131 0.16 7.4
0.07x0.4 42.3 0.222 0.214 9.4
0.07x0.5 33.9 0.337 0.267 11.4
0.07x0.6 28.2 0.475 0.321 13.4
0.07x0.7 24.2 0.637 0.374 15.4
0.07x0.8 21.2 0.822 0.428 17.4
0.07x0.9 18.8 1.03 0.481 19.4
0.07x1.0 16.9 1.26 0.535 21.4
0.07x1.2 14.1 1.8 0.641 25.4
0.07x1.5 11.3 2.78 0.802 31.4
0.06x0.2 98.7 0.0527 0.0916 5.2
0.06x0.3 65.8 0.109 0.137 7.2
0.06x0.4 49.4 0.186 0.183 9.2
0.06x0.5 39.5 0.284 0.229 11.2
0.06x0.6 32.9 0.401 0.275 13.2
0.06x0.7 28.2 0.539 0.321 15.2
0.06x0.8 24.7 0.697 0.367 17.5
0.06x0.9 21.9 0.875 0.412 19.2
0.06x1.0 19.7 1.07 0.458 21.2
0.06x1.2 16.5 1.53 0.55 25.2
0.05x0.2 118 0.0422 0.0764 5.00
0.05x0.3 79 0.0886 0.115 7.00
0.05x0.4 59.2 0.152 0.153 9.00
0.05x0.5 47.4 0.232 0.191 11.00
0.05x0.6 39.5 0.329 0.229 13.00
0.05x0.7 33.9 0.443 0.267 15.0
0.05x0.8 29.6 0.574 0.305 17.0
0.05x0.9 16.3 0.722 0.344 19.0
0.05x1.0 23.7 0.886 0.382 21.0
Ribbon is rolled by the wire, the actual cross-sectional area of the ribbon is smaller 8％ than calculated by the rectangular.

NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature EnvironmentsNiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature EnvironmentsNiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments

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Product Detail
Brand Name :
Senphus
Model Number :
Cr30Ni70/NiCr7030/ХН70Ю
Certification :
ISO9001
Place of Origin :
China
MOQ :
5kg
Payment Terms :
T/T, D/P
Contact Supplier
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NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments
NiCr Alloy Cr30Ni70/NiCr7030/ХН70Ю For Industrial Heating Elements And Resistance Applications In High-Temperature Environments

Jiangyin Chengxin Alloy Material Co., Ltd ，

Verified Supplier
1 Years
jiangsu, changzhou
Since 2003
Business Type :
Manufacturer, Exporter, Seller
Main Products :
Pure Nickel Metal, NiCr Alloy, CuNi Alloy
Total Annual :
230000000-240000000
Employee Number :
1400~1500
Certification Level :
Verified Supplier
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