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China factories

China factory - Jiangyin Chengxin Alloy Material Co., Ltd ，

Jiangyin Chengxin Alloy Material Co., Ltd ，

  • China,Changzhou ,Jiangsu
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  3. Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion
China Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion
China Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion

  1. China Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion
  2. China Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion
  3. China Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion

Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion

  1. MOQ： 5kg
  2. Price：
  3. Get Latest Price
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 8.10
Resistivity at 20 ℃ 1.18±0.05
Melting point（℃） 1380
Thermal conductivity(KJ/mh ℃ ) 45.2
Elongation at rupture（% ) >20
Brand Name Senphus
Certification ISO9001
Place of Origin China
Model Number Cr30Ni70

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  1. Product Details
  2. Company Details

Product Specification

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 8.10 Resistivity at 20 ℃ 1.18±0.05
Melting point（℃） 1380 Thermal conductivity(KJ/mh ℃ ) 45.2
Elongation at rupture（% ) >20 Brand Name Senphus
Certification ISO9001 Place of Origin China
Model Number Cr30Ni70
High Light Cr30Ni70 nickel chromium alloy wire ，Resistance nickel chromium alloy wire ，Cr30Ni70 resistance heating wire

Cr30Ni70 Nickel-Chromium-Iron Alloy with Good Anti-Oxidation and Anti-Corrosion Performance for Electrical Applications

 
Cr30Ni70, with 70% nickel and 30% chromium, is recognized for its excellent properties below 1050°C, including good oxidation resistance, thermal strength, and a low positive temperature coefficient. It exhibits high plasticity, cold stamping, and welding properties at room temperature. After solution treatment, the alloy forms a single-phase austenite structure, providing structural stability during use. It has a density of 8.1 g/cm³, a resistivity of 1.18 μΩ·m at 20°C, and a melting point between 1370-1410°C.
 
Cr30Ni70 is used in various applications such as heating elements in periodic heat treatment furnaces below 1050°C, and as high-quality heat-resistant steel structural parts like shafts and burning frames. Its high resistivity makes it suitable for electric heating elements in household appliances and industrial ovens.

 

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 Cr30Ni70 include:

  1. High Nickel and Chromium Content: Comprising approximately 30% chromium and 70% nickel, this alloy is known for its excellent resistance to oxidation and corrosion.
  2. Thermal Stability: Cr30Ni70 exhibits excellent stability at high temperatures, allowing it to be used in applications that demand performance under extreme heat.
  3. Corrosion Resistance: The alloy's high chromium content provides it with superior resistance to a variety of corrosive environments, including acidic and alkaline conditions.
  4. Electrical Resistivity: It has a relatively high electrical resistivity, which makes it suitable for use in heating elements and other electrical applications where resistance is crucial.
  5. Mechanical Strength: Despite its high resistance to corrosion and oxidation, Cr30Ni70 maintains good mechanical strength, making it durable in various applications.
  6. Low Carbon Content: With very low carbon content, often denoted as "0" in the alloy name (0Cr30Ni70), it minimizes the risk of carbon-related corrosion and maintains its properties at high temperatures.
  7. Fabrication: The alloy is relatively easy to fabricate and can be formed into various shapes and sizes, which is beneficial for manufacturing components with specific dimensions.

These characteristics make Cr30Ni70 a valuable material in industries where high temperatures, corrosion resistance, and stability are paramount.

 

Applications:

  • Heating Elements: Due to its high electrical resistivity and temperature stability, Cr30Ni70 is used in the manufacturing of heating elements for various electrical appliances.
  • Chemical Processing Equipment: The alloy's resistance to corrosion makes it suitable for use in chemical reactors, heat exchangers, and other equipment that comes into contact with corrosive substances.
  • Aerospace Components: Cr30Ni70 is utilized in the aerospace industry for components that require high-temperature strength and resistance to oxidation.
  • High-Temperature Furnaces: It is used in the construction of furnace parts, such as muffles and heating chambers, that operate at elevated temperatures.
  • Thermocouples: The alloy's low thermal electromotive force relative to copper makes it suitable for use in thermocouples, particularly in Type E thermocouples.
  • Food Processing Equipment: Cr30Ni70 is used in equipment that requires resistance to both corrosion and high temperatures, such as in the food and pharmaceutical industries.
  • Power Generation: It finds application in power generation systems, particularly in components that are exposed to high heat and corrosive environments.
  • Automotive Exhaust Systems: Due to its high-temperature capabilities, Cr30Ni70 can be used in the manufacturing of automotive exhaust components.
  • Gas Turbines: The alloy is used in gas turbine blades and other hot sections of the turbines that require resistance to high temperatures and corrosion.

These applications capitalize on Cr30Ni70's unique combination of properties, including high-temperature strength, corrosion resistance, and thermal stability.

 

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.

 

 

 

 

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Exporter,Seller

  • Year Established:

    2003

  • Total Annual:

    230000000-240000000

  • Employee Number:

    1400~1500

  • Ecer Certification：

    Verified Supplier

Company Overview: Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and pre... Company Overview: Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and pre...

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Get in touch with us

  • Reach Us
  • Jiangyin Chengxin Alloy Material Co., Ltd ，
  • Building 3, No. 29, Beitanghe East Road, Qinglong Street, Tianning District, Changzhou City, Jiangsu Province
  • https://www.heatingalloywire.com/

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