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Jiangyin Chengxin Alloy Material Co., Ltd ,
Jiangsu Xiangcheng Supply Chain Management Co. LTD
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Cr25Ni20 NiCr Alloy High-Temperature Resistance Heating Materials for Heating Applications

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Jiangyin Chengxin Alloy Material Co., Ltd ,

City: changzhou

Province/State:jiangsu

Country/Region:china

Tel:-0510-86650038

Contact Person:
Mr.Changfeng Ye
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Cr25Ni20 NiCr Alloy High-Temperature Resistance Heating Materials for Heating Applications

Brand Name Senphus
Model Number Cr25Ni20
Certification ISO9001
Place of Origin China
Minimum Order Quantity 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 7.15
Resistivity at 20 ℃ 0.95±0.05
Melting point(℃) 1400
Thermal conductivity(KJ/m h ℃ ) 43.8
Elongation at rupture(% ) >20
Detailed Product Description

Cr25Ni20 Nickel-Chromium-Iron Alloys High-Temperature Resistance

 

Cr25Ni20 is a nickel-chromium-iron alloy composed of approximately 25% chromium, 20% nickel, and the remainder iron, designed for excellent performance in high-temperature and corrosive environments. This alloy offers a superior combination of oxidation resistance, thermal stability, and mechanical strength, making it well-suited for industrial applications.

Known for its exceptional resistance to scaling and oxidation at elevated temperatures, Cr25Ni20 performs effectively in environments exposed to high heat and aggressive chemicals. It also provides good creep and stress rupture strength, ensuring reliability in prolonged high-stress conditions.

The alloy is commonly used in applications such as heat exchangers, furnace components, and industrial heating systems. Its resistance to carburizing and oxidizing atmospheres makes it suitable for chemical processing, power generation, and metallurgical industries. Additionally, its weldability and formability allow for versatility in fabrication.

In summary, Cr25Ni20 is a durable, high-performance material ideal for high-temperature and chemically aggressive environments, valued for its reliability and cost-effectiveness.

 

Chemical Composition Wt.%

Cr25Ni20

%NiFeCSiMnPSCr
Min19      24
Max22Bal.0.020.80.80.020.01526

 

Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys

 

               Type



Performance

Cr30Ni70Cr15Ni60Cr20Ni35Cr20Ni80Cr20Ni30Cr25Ni20
Main Chemical compositionNiRest55.0-61.034.0-37.0Rest30.0-34.019.0-22.0
Cr28.0-31.015.0-18.018.0-21.020.0-23.018.0-21.024.0-26.0
Fe≤ 1.0RestRest≤ 1.0RestRest
Max. continuous service temp. of element (℃)125011501100120011001050
Resistivity at 20 ℃(μΩm)1.18±0.051.12±0.051.04±0.051.09±0.051.06±0.050.95±0.05
Density(g/cm3)8.108.207.908.407.907.15
Thermal condyctivity (KJ/m·h·℃)45.245.243.860.343.843.8
Coefficient of lines expansion (α×10-6/℃)17.017.019.018.019.019.0
Melting point (approx.)(℃)138013901390140013901400
Elonation at rupture(%)>20>20>20>20>20>20
Micrographic structureAusteniteAusteniteAusteniteAusteniteAusteniteAustenite
Magnetic propertiesNon-magneticLow-magneticLow-magneticNon-magneticLow-magneticNon-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.

 

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)
0.0180.0002550.0021173410-46100.250.049090.407420.88-23.54
0.0200.0003140.0026062940-37400.280.061580.511116.64-18.76
0.0220.0003800.0031542440-31000.300.070690.586714.49-16.35
0.0250.0004910.0040751880-24000.320.075480.626512.74-14.36
0.0280.0006160.0051131530-18700.330.085530.709912.20-13.40
0.0300.0007070.0058681338-16960.380.11340.94129.13-10.09
0.0320.0008040.0066731180-14400.400.12571.04338.24-9.108
0.0350.0009620.007985981-12000.410.1321.09567.68-8.89
0.0400.0012570.01043780.7-954.10.450.1591.31976.51-7.196
0.0450.001590.0132594-7260.500.19631.62935.273-5.829
0.0500.0019630.01629499.6-610.60.550.23761.97214.518-4.994
0.0550.002380.01975407-4770.600.28272.34643.797-4.197
0.0630.003120.02590321.41-377.310.650.33182.75393.235-3.575
0.0700.003850.03196260.5-305.90.700.38483.19382.789-3.083
0.0800.0050270.04172199.5-234.10.750.44183.66692.43-2.686
0.0900.0063620.0528157.6-185.00.800.50274.17242.136-2.36
0.1000.0078540.0652127.7-149.90.850.56744.70941.891-2.091
0.1100.0098520.08177105.5-123.90.900.63625.28051.687-1.865
0.1200.012270.101888.67-104.10.950.70885.8831.46-1.62
0.1400.015390.127765.85-75.771.000.78546.51881.367-1.511
0.1500.017670.146756.75-66.631.100.95037.88751.13-1.26
0.1600.020110.0166950.42-58.001.120.98528.17721.05-1.17
0.1700.0227000.188444.18-51.861.181.09369.07690.95-1.05
0.1800.025450.211240.26-45.401.201.31310.89790.79-0.87
0.1900.028350.235335.37-41.531.301.32711.01410.78-0.86
0.2000.031420.260832.62-36.781.401.53912.77370.70-0.77
0.2120.0353000.293028.41-33.351.501.76714.66610.60-0.67
0.2200.038010.315526.65-30.391.602.01116.89240.52-0.58

 

Some key features of Cr25Ni20 include:

  • ‌High Chromium and Nickel Composition‌:

With chromium at approximately 25% and nickel around 20%, this alloy exhibits enhanced corrosion resistance and high-temperature durability.

  • ‌Exceptional High-Temperature Performance‌:

Cr25Ni20 maintains its structural integrity and mechanical properties at elevated temperatures, making it ideal for high-temperature applications.

  • ‌Outstanding Corrosion and Oxidation Resistance‌:

The high chromium content provides superior protection against corrosion and oxidation, even in challenging environments.

  • ‌Good Mechanical Strength and Toughness‌:

This alloy offers a balance of mechanical properties, including high tensile strength, good ductility, and creep resistance.

  • ‌Moderate Electrical Resistivity‌:

Cr25Ni20 has a moderate level of electrical resistivity, making it suitable for use in electrical heating elements, resistors, and other applications that require controlled heat generation.

  • ‌Versatility in Applications‌:

Due to its unique combination of properties, Cr25Ni20 is widely used in various industries, including aerospace, automotive, chemical processing, and electrical engineering, among others.

 

Applications:

  • Aerospace Industry‌

Used in aircraft components due to its high-temperature resistance and corrosion resistance.

  • ‌Automotive Industry‌

Employed in automotive parts that require durability and resistance to high temperatures, such as exhaust systems.

  • Chemical Processing‌

Suitable for use in chemical processing equipment because of its excellent corrosion resistance.

  • ‌Electrical Engineering‌

Utilized in electrical heating elements and resistors owing to its moderate electrical resistivity and ability to withstand high temperatures.

  • ‌Other Industries‌

Found in various other industries, including power generation, oil and gas, and heat treatment, where its combination of properties is valuable.

 

‌Core Sentence‌:
Cr25Ni20 is widely applied in multiple industries, including aerospace, automotive, chemical processing, and electrical engineering, due to its unique combination of high-temperature resistance, corrosion resistance, and moderate electrical resistivity.

 

 

The tolerance or wires diameter

 

WiresDia.(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)
0.09x2.55.279.841.7251.8
0.08x0.2740.07560.1225.6
0.08x0.349.40.1540.1837.6
0.08x0.4370.2590.2449.6
0.08x0.529.60.3920.30511.6
0.08x0.624.70.5510.36713.6
0.08x0.721.20.7370.42815.6
0.08x0.818.50.9510.48917.6
0.08x0.916.51.190.5519.6
0.08x1.014.81.460.61121.6
0.08x1.212.32.070.73325.6
0.08x1.59.873.20.91631.6
0.08x1.88.234.571.137.6
0.08x2.07.45.621.2241.6
0.07x0.284.60.06380.1075.4
0.07x0.356.40.1310.167.4
0.07x0.442.30.2220.2149.4
0.07x0.533.90.3370.26711.4
0.07x0.628.20.4750.32113.4
0.07x0.724.20.6370.37415.4
0.07x0.821.20.8220.42817.4
0.07x0.918.81.030.48119.4
0.07x1.016.91.260.53521.4
0.07x1.214.11.80.64125.4
0.07x1.511.32.780.80231.4
0.06x0.298.70.05270.09165.2
0.06x0.365.80.1090.1377.2
0.06x0.449.40.1860.1839.2
0.06x0.539.50.2840.22911.2
0.06x0.632.90.4010.27513.2
0.06x0.728.20.5390.32115.2
0.06x0.824.70.6970.36717.5
0.06x0.921.90.8750.41219.2
0.06x1.019.71.070.45821.2
0.06x1.216.51.530.5525.2
0.05x0.21180.04220.07645.00
0.05x0.3790.08860.1157.00
0.05x0.459.20.1520.1539.00
0.05x0.547.40.2320.19111.00
0.05x0.639.50.3290.22913.00
0.05x0.733.90.4430.26715.0
0.05x0.829.60.5740.30517.0
0.05x0.916.30.7220.34419.0
0.05x1.023.70.8860.38221.0
Ribbon is rolled by the wire, the actual cross-sectional area of the ribbon is smaller 8% than calculated by the rectangular.

 

 

 

 

 

Product Tags: Heating Applications NiCr Alloy   Cr25Ni20 NiCr Alloy   High Temperature Resistance NiCr Alloy  
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