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Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Specifications
Brand Name :
Senphus
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.
Model Number :
Cr20Ni30
Place of Orig :
China
Type :
Ni-Cr-Fe alloys
Application :
Heating element and resistor
Color :
Shiny silver or dark gray
Density :
7.90
Resistivity at 20 ℃ :
1.06±0.05
Melting point（℃） :
1390
Thermal conductivity(KJ/m h ℃ ) :
43.8
Elongation at rupture（% ) :
>20
Description

Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs

Cr20Ni30 is an austenitic stainless steel alloy composed of 20% chromium and 30% nickel, designed for high-performance applications in harsh environments. Its high chromium content provides excellent resistance to oxidation, while the nickel enhances its toughness, ductility, and resistance to stress-corrosion cracking. This makes Cr20Ni30 particularly effective in high-temperature and corrosive environments.

The alloy’s excellent oxidation resistance allows it to perform well in heat-intensive applications, such as furnaces, gas turbines, heat exchangers, and boiler components. It also maintains superior mechanical properties under thermal cycling, ensuring long-term durability even in fluctuating temperatures. Cr20Ni30 is highly resistant to both acidic and alkaline corrosion, making it suitable for use in chemical reactors, marine environments, and industrial incinerators.

With an austenitic structure, Cr20Ni30 is non-magnetic and offers good weldability, making it versatile for fabrication into complex shapes and structures. Its ability to withstand high temperatures, corrosive media, and mechanical stress also makes it a reliable choice in industries such as aerospace, power generation, and chemical processing.

In summary, Cr20Ni30 is a durable, high-performance alloy known for its resistance to high temperatures, oxidation, and corrosion, making it ideal for demanding industrial applications where reliability and longevity are critical.

Chemical Composition Wt.%

Cr20Ni30

 % Ni Fe C Si Mn P S Cr
Min 30 1 18
Max 34 Bal. 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.

Some key features of Cr20Ni30 include:

  1. Chemical Composition: Cr20Ni30 is a nickel-chromium alloy with approximately 20% chromium (Cr) and 30% nickel (Ni), with the remainder being iron (Fe) and trace amounts of other elements like carbon (C), silicon (Si), and manganese (Mn).
  2. Electrical Resistivity: The alloy has a high electrical resistivity, typically around 1.18 Ωmm²/m at 20°C, which is beneficial for applications requiring high resistance values.
  3. Temperature Coefficient of Resistance: Cr20Ni30 exhibits a low temperature coefficient of resistance, ensuring minimal resistance change with temperature variations, which is crucial for stability in high-temperature applications .
  4. Oxidation Resistance: The alloy demonstrates excellent resistance to oxidation at high temperatures, with the formation of a protective chromium oxide layer that prevents further oxygen penetration.
  5. Mechanical Strength: Cr20Ni30 maintains good mechanical strength at high temperatures, with a tensile strength of at least 450 MPa and an elongation rate of ≥25%, indicating good ductility and resistance to deformation.
  6. Thermal Stability: It can operate continuously at temperatures up to 1100°C, making it suitable for applications in high-temperature environments.
  7. Corrosion Resistance: The alloy shows superior corrosion resistance, particularly in oxidizing conditions, due to its chromium content
  8. Thermal Fatigue Resistance: Cr20Ni30 has good resistance to thermal fatigue, which is important for applications involving repeated heating and cooling cycles.
  9. Creep Resistance: The alloy exhibits low creep rates at high temperatures, ensuring dimensional stability over extended periods of use.

These characteristics make Cr20Ni30 a preferred material in various industries, particularly those requiring materials with specific electrical properties and resistance to high temperatures and corrosive environments.

Applications:

  • Heating Elements: Cr20Ni30 is widely used in electric heating elements for industrial furnaces, electric ovens, and household heaters due to its high electrical resistivity and stability at elevated temperatures.
  • Precision Resistors: The alloy is suitable for manufacturing precision resistors and shunt resistors, as it maintains stable resistance values across a wide temperature range.
  • Resistance Tape: Cr20Ni30 is utilized in the production of resistance tape for high-quality resistance boxes, ensuring reliable performance in various electrical applications.
  • Industrial Heating Equipment: It finds application in various industrial heating equipment, including heat treatment furnaces, where its high-temperature performance and corrosion resistance are essential.
  • Aerospace Components: The alloy is employed in aerospace applications for components that require high strength and stability at elevated temperatures.
  • Marine Applications: Cr20Ni30 is also used in marine environments for components that require resistance to seawater corrosion and high temperatures.

These applications highlight the versatility of Cr20Ni30 in industries where high performance, durability, and resistance to extreme conditions are critical. For further details on the properties and applications of Cr20Ni30, 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.

Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical NeedsCr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical NeedsCr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs

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Product Detail
Brand Name :
Senphus
Certification :
ISO9001
Place of Origin :
China
MOQ :
5kg
Payment Terms :
T/T, D/P
Supply Ability :
30 Tons per day
Contact Supplier
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Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs
Cr20Ni30 Nickel-Chromium-Iron Alloys The Top-Performing Choice for Industrial Electrical Needs

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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