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NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
Specifications
Brand Name :
Senphus
Model Number :
Cr20Ni35
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 :
Cr20Ni35
Type :
Ni-Cr-Fe alloys
Application :
Heating element and resistor
Color :
Shiny silver or dark gray
Density :
7.90
Resistivity at 20 ℃ :
1.04±0.05
Melting point（℃） :
1390
Thermal conductivity :
43.8(KJ/m h ℃ )
Elongation at rupture（% ) :
>20
Description

NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

NiCr Alloy Wire Cr20Ni35 is a nickel-chromium-based alloy with 30% chromium and 35% nickel, designed primarily for high-temperature resistance, oxidation resistance, and resistive applications. This composition offers an ideal balance of thermal stability, mechanical properties, and electrical resistivity, making it well-suited for a variety of industrial applications where these properties are critical. NiCr Alloy Wire Cr20Ni35 is an excellent choice for high-temperature and electrical resistive applications. Its oxidation resistance, thermal stability, and electrical resistivity make it suitable for demanding environments like heating elements, resistors, and industrial furnaces. While more costly than standard materials, its performance in high-temperature and corrosive conditions justifies its use in critical applications requiring durability and reliability over time. Its versatility in fabrication and welding further enhances its appeal in a wide range of industries.

Chemical Composition Wt.%

Cr20Ni35

 % Ni Fe C Si Mn P S Cr
Min 34 1 18
Max 37 Rest 0.08 3 1 0.02 0.015 21

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.

Key Features of NiCr Alloy Wire Cr30Ni35:

  • Composition:

Nickel (Ni): 35% (provides excellent high-temperature stability, corrosion resistance, and electrical resistivity).

Chromium (Cr): 20% (improves oxidation resistance and strength at elevated temperatures).

Iron (Fe): Small amounts (balance), contributing to structural integrity.

Other Elements: Small quantities of manganese, silicon, and carbon for improving fabrication, strength, and weldability.

  • High-Temperature Resistance:

Oxidation Resistance: Performs well at temperatures up to 1000°C (1832°F), with chromium forming a protective oxide layer to resist oxidation and prevent further degradation.

Thermal Fatigue Resistance: Can endure repeated heating and cooling cycles without significant loss of strength, making it ideal for industrial heating applications.

  • Electrical Resistivity:

Moderate Electrical Resistivity: Offers stable electrical resistance over a wide temperature range, making it suitable for resistors, heating elements, and other electrical components where controlled heating or consistent electrical properties are necessary.

Ideal for use in applications such as furnaces or electrical resistive heating elements, where precise and stable electrical characteristics are crucial.

  • Corrosion and Scaling Resistance:

Good Resistance to Corrosion: Particularly effective in oxidizing environments, and performs well in applications where the material is exposed to high temperatures and corrosive gases or vapors.

Sulfidation and Scaling Resistance: Resists scaling and corrosion in environments with high sulfur content or other aggressive atmospheres.

  • Mechanical Properties:

Tensile Strength and Ductility: Provides good tensile strength and can withstand mechanical stresses at high temperatures while maintaining adequate ductility for fabrication.

Work Hardening: The alloy may harden when cold-worked, but it remains sufficiently ductile for most forming applications, such as drawing into wire or other shapes.

  • Weldability and Fabrication:

Weldability: Can be welded using standard methods, including GTAW (TIG) and GMAW (MIG), with appropriate precautions to avoid cracking and ensure a strong bond.

Formability: Easily drawn into wires, strips, or other shapes, making it versatile for manufacturing heating elements and other specialized components.

​Applications:

  • Heating Elements: Commonly used in industrial heating elements, resistors, and furnaces, where high temperatures and stable electrical properties are essential.
  • Electrical Components: Suitable for resistors and thermocouples that require reliable performance in high-heat applications.
  • High-Temperature Furnaces: Often used in high-temperature industrial applications like furnaces, ovens, and dryers that require resistance to oxidation and thermal cycling.

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.

Advantages of NiCr Alloy Wire Cr20Ni35:

  • High-Temperature Stability: Ideal for high-temperature applications like heating elements and industrial furnaces, with stable mechanical properties even in extreme heat.
  • Excellent Oxidation Resistance: Provides strong protection against oxidation and scaling, ensuring a long service life in demanding environments.
  • Reliable Electrical Properties: Maintains consistent electrical resistance, making it perfect for use in resistors, heating coils, and temperature sensors.
  • Weldability and Formability: Can be processed and fabricated into various shapes, such as wire or strip, for a wide range of applications.
  • Durable in Harsh Environments: Suitable for environments where corrosive gases, scaling, or sulfur exposure could degrade other materials.

Limitations of NiCr Alloy Wire Cr30Ni35:

  • Cost: Higher cost compared to standard alloys due to the nickel and chromium content.
  • Limited Resistance to Highly Acidic Environments: While resistant to oxidation and scaling, it may not perform well in highly acidic or chloride-rich environments compared to more specialized alloys.
  • Work Hardening: As with other high-strength alloys, it can work-harden during cold working, which may require more care during processing.

NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial FurnacesNiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial FurnacesNiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

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Product Detail
Brand Name :
Senphus
Model Number :
Cr20Ni35
Certification :
ISO9001
Place of Origin :
China
MOQ :
5kg
Payment Terms :
T/T, D/P
Contact Supplier
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NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces
NiCr Alloy Wire Cr20Ni35 Stable Electrical Resistivity For Industrial Furnaces

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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