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

Jiangyin Chengxin Alloy Material Co., Ltd ，

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  3. Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For
China Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For
China Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For

  1. China Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For
  2. China Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For
  3. China Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For

Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For

  1. MOQ： 5kg
  2. Price：
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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
Brand Name Senphus
Model Number Cr30Ni70/NiCr7030/ХН70Ю
Certification ISO9001
Place of Origin China

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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 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
Brand Name Senphus Model Number Cr30Ni70/NiCr7030/ХН70Ю
Certification ISO9001 Place of Origin China
High Light Resistors NiCr Alloy ，Weldability NiCr Alloy ，Fabrication NiCr Alloy

Cr30Ni70/NiCr7030/ХН70Ю NiCr Alloy With Weldability And Fabrication For Resistors

 

NiCr Alloy Wire Cr30Ni70 (NiCr7030, ХН70Ю) is a high-performance alloy made of 30% chromium and 70% nickel, offering excellent high-temperature resistance, corrosion resistance, and good electrical resistivity. This alloy is particularly suitable for applications in industries requiring durability in high-temperature environments, such as electrical heating elements, resistors, and industrial furnaces. NiCr Alloy Wire Cr30Ni70 (NiCr7030, ХН70Ю) is an excellent choice for applications requiring high-temperature stability, corrosion resistance, and consistent electrical resistivity. Its ability to perform under extreme heat makes it a top contender for industries involved in heating elements, resistors, and industrial furnaces. While it comes at a higher cost than basic alloys, its robust performance in demanding environments justifies its use in applications where longevity and reliability are critical.

 

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:

Nickel (Ni): 70% (primary element for high-temperature stability and corrosion resistance).

Chromium (Cr): 30% (provides oxidation resistance and improves the alloy's high-temperature strength).

Carbon (C): Small amount, improving strength and resistance to wear.

Iron (Fe): Trace amounts, used for structural integrity.

Other trace elements may include manganese, silicon, and sulfur.

  • High-Temperature Resistance:

Performs well in high-temperature environments, making it ideal for heating elements and resistors used in applications requiring stable performance at elevated temperatures, often up to 1000°C to 1100°C (1832°F to 2012°F).

  • Corrosion and Oxidation Resistance:

Excellent Oxidation Resistance: Chromium content ensures the alloy maintains its structural integrity by forming a protective oxide layer when exposed to high temperatures, preventing further degradation.

Resistant to Scaling and Sulfidation: Performs well in environments that involve high temperatures and exposure to sulfur-containing atmospheres.

  • Electrical Resistivity:

Moderate Electrical Resistivity: Offers reliable and stable resistive properties, making it suitable for use in resistors, heating elements, and thermocouples.

Stable Resistance at Elevated Temperatures: The alloy maintains stable resistance across a wide range of operating temperatures.

  • Mechanical Properties:

Tensile Strength: Provides good tensile strength at high temperatures, allowing it to withstand mechanical stresses in industrial heating applications.

Ductility: Exhibits good ductility for forming and shaping into wires or strips for industrial uses.

  • Weldability and Fabrication:

Weldable: NiCr7030 can be welded using standard techniques, including gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW).

Formability: Can be easily drawn into wires and other shapes without compromising performance.

 

Applications:

  • Heating Elements: Commonly used in electrical heating systems such as electric furnaces, ovens, dryers, and toasters.
  • Resistors: Ideal for manufacturing precision resistors and thermal sensors.
  • Electrical and Electronics: Used in thermocouples and resistance temperature detectors (RTDs).
  • Industrial Furnaces: Widely used in industrial heating elements for applications involving high heat or thermal cycling.

 

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

  • High-Temperature Stability: Performs reliably at elevated temperatures up to 1100°C (2012°F).
  • Oxidation and Corrosion Resistance: Ensures durability and longevity in high-temperature, corrosive environments.
  • Electrical Stability: Offers stable electrical resistivity, ideal for heating elements and resistors.
  • Weldability and Fabrication: Easily processed into wires and welded for various industrial applications.
  • Durable and Long-Lasting: Suitable for demanding applications that require high mechanical strength and resistance to thermal stress.

 

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

  • Cost: Higher cost compared to regular metals due to its specialized properties and composition.
  • Limited Resistance to Strong Acids: Although it is resistant to oxidation and sulfidation, it may not perform well in highly acidic or chloride-rich environments compared to other alloys like Inconel.
  • Work Hardening: The alloy may harden when cold-worked, which can require additional processing steps for machining.

 

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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