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Cr20Ni80/80Ni20Cr/NiCr8020 High-Performance Alloy for Industrial Furnace Components

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Cr20Ni80/80Ni20Cr/NiCr8020 High-Performance Alloy for Industrial Furnace Components

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Brand Name : Senphus

Model Number : Cr20Ni80/80Ni20Cr/NiCr8020

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

Type : Ni-Cr-Fe alloys

Application : Heating element and resistor

Color : Shiny silver or dark gray

Density : 8.40

Resistivity at 20 ℃ : 1.09±0.05

Melting point（℃） : 1400

Thermal conductivity KJ/mh ℃ : 60.3

Elongation at rupture（% ) : >20

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Cr20Ni80/80Ni20Cr/NiCr8020 High-Performance Alloy for Industrial Furnace Components

Cr20Ni80 is an alloy composed of approximately 20% chromium (Cr) and 80% nickel (Ni), known for its exceptional resistance to oxidation and corrosion, particularly at high temperatures. Its high nickel content gives it excellent resistance to both acidic and alkaline environments, making it ideal for applications in harsh chemical environments. The chromium component enhances its ability to form a protective oxide layer, which further improves its resistance to oxidation.

This alloy is particularly valued for its high-temperature performance, maintaining its strength and stability in temperatures up to 1,100°C (2,012°F). It also possesses good mechanical properties, including strength, ductility, and resistance to wear and fatigue.

Cr20Ni80 is commonly used in heating elements for electric furnaces, ovens, and heating coils due to its ability to withstand high thermal stress. It is also used in industrial applications like furnace components and chemical processing equipment, where high temperature and corrosion resistance are essential. The alloy’s ability to resist thermal degradation and maintain electrical resistivity makes it a reliable material for demanding industrial applications.

Chemical Composition Wt.% Cr20Ni80 % Ni Fe C Si Mn P S Cr Al
Min 0.75 20
Max Rest 1 0.08 1.6 0.6 0.02 0.015 23 0.5

Type

GB JIS ASTM DIN EN/DIN GOST
Cr20Ni80 NCHW-1
NCHR-1		 80Ni20Cr NiCr8020 Х20Н80-Н

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.

Some key features of Cr20Ni80 include:

  • High Nickel Content:

    • With approximately 80% nickel, Cr20Ni80 offers excellent resistance to corrosion and oxidation, particularly in high-temperature environments.

  • Corrosion Resistance:

    • The alloy is highly resistant to a variety of corrosive media, including acids, alkalis, and salt solutions, which makes it suitable for use in chemical processing and marine applications.

  • Thermal Stability:

    • Cr20Ni80 maintains its properties at elevated temperatures, allowing for continuous use up to approximately 1200°C without significant degradation.

  • Low Expansion Coefficient:

    • The alloy has a low coefficient of thermal expansion, which means it does not change dimensions significantly with temperature changes, contributing to its stability in high-temperature applications.

  • Non-Magnetic:

    • Cr20Ni80 is non-magnetic, which is an advantage in applications where magnetic fields could interfere with performance.

  • Formability:

    • The alloy is relatively easy to form and shape, making it suitable for a variety of manufacturing processes, including welding, brazing, and cold and hot working.

  • Electrical Properties:

    • While not primarily used for electrical applications, Cr20Ni80 has acceptable electrical conductivity, which can be utilized in certain heating element designs.

  • Weldability:

    • Cr20Ni80 can be welded using various techniques, including TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding, which allows for the fabrication of complex components.

These features make Cr20Ni80 a popular choice in a variety of industries where high-temperature performance, corrosion resistance, and dimensional stability are required.

Applications:

  • Heating Elements: Cr20Ni80 is widely used in electric heating elements for industrial furnaces, electric ovens, and household heaters due to its ability to withstand high temperatures (up to 1200°C) and its excellent electrical resistance properties.

  • Precision Resistors: The alloy is suitable for manufacturing precision resistors and shunt resistors, as it maintains stable resistance values across a wide temperature range, making it ideal for electrical measuring instruments.

  • Resistance Tape: Cr20Ni80 is utilized in the production of resistance tape for high-quality resistance boxes, ensuring reliable performance in various electrical applications.

  • Industrial Applications: It is used in various industrial applications, including heat treatment furnaces, where its high-temperature performance and corrosion resistance are essential.

  • Aerospace Components: The alloy is employed in aerospace applications, particularly in components that require high strength and stability at elevated temperatures.

  • Marine Applications: Cr20Ni80 is also used in marine environments for components that require resistance to seawater corrosion and high temperatures.

These applications demonstrate the versatility of Cr20Ni80 in industries where high performance, durability, and resistance to extreme conditions are critical.

For further details on the properties and applications of Cr20Ni80, you can refer to the relevant technical datasheets and industry standards .

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.

Cr20Ni80/80Ni20Cr/NiCr8020 High-Performance Alloy for Industrial Furnace ComponentsCr20Ni80/80Ni20Cr/NiCr8020 High-Performance Alloy for Industrial Furnace ComponentsCr20Ni80/80Ni20Cr/NiCr8020 High-Performance Alloy for Industrial Furnace Components


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