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NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity

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    Buy cheap NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity from wholesalers
     
    Buy cheap NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity from wholesalers
    • Buy cheap NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity from wholesalers
    • Buy cheap NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity from wholesalers
    • Buy cheap NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity from wholesalers

    NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity

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    Brand Name : Senphus
    Model Number : Cr25Ni20
    Certification : ISO9001
    Payment Terms : T/T, D/P
    Supply Ability : 30 Tons per day
    Delivery Time : 3 days
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    NiCr Alloy Wire Cr25Ni20 Perfect Combination Of Oxidation Resistance Thermal Stability And Moderate Electrical Resistivity

    NiCr Alloy Wire Cr25Ni20 Perfect Combination of Oxidation Resistance Thermal Stability and Moderate Electrical Resistivity


    Cr25Ni20 NiCr Alloy Wire is a nickel-chromium-based alloy consisting of 25% chromium and 20% nickel, designed for high-temperature applications. It is commonly used in environments where oxidation and corrosion resistance are crucial, as well as where moderate electrical resistivity is required. This alloy offers a combination of excellent high-temperature stability, oxidation resistance, and reliability in industrial applications, particularly in heating elements, resistors, and furnace components. Cr25Ni20 NiCr Alloy Wire is an excellent choice for high-temperature applications where oxidation resistance, electrical resistivity, and thermal durability are critical. Its performance in demanding environments like industrial furnaces, heating elements, and resistors makes it a versatile and reliable material in industries such as power generation, chemical processing, and electronics. While it is more costly than some other alloys, its ability to perform at high temperatures with excellent corrosion and oxidation resistance justifies its use in critical applications.

    Chemical Composition Wt.%

    Cr25Ni20

    %NiFeCSiMnPSCr
    Min1924
    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:

    • Composition:

    Nickel (Ni): 20% (provides excellent high-temperature strength and resistance to oxidation).

    Chromium (Cr): 25% (enhances the alloy’s resistance to oxidation and scaling at high temperatures).

    Iron (Fe): Balance (used for structural integrity and to keep the alloy cost-effective).

    Other Elements: Trace amounts of silicon, manganese, and carbon for improving strength, workability, and weldability.

    • High-Temperature Resistance:

    Oxidation Resistance: The 25% chromium content provides superior oxidation resistance, especially at elevated temperatures up to 1000°C (1832°F), ensuring long service life in environments where oxidation could degrade other materials.

    Thermal Cycling Resistance: The alloy can endure repeated heating and cooling cycles without significant deterioration, making it suitable for industrial processes where temperature fluctuations are common.

    • Electrical Resistivity:

    Moderate Electrical Resistivity: The alloy maintains a stable electrical resistance at elevated temperatures, making it suitable for applications like resistors and heating elements that require precise electrical properties.

    Temperature Coefficient of Resistance (TCR): It exhibits a moderate TCR, which is important for applications where resistance needs to remain relatively stable as the temperature changes.

    • Corrosion and Scaling Resistance:

    Corrosion Resistance: The high chromium content also enhances the alloy’s resistance to sulfidation and oxidizing environments, making it well-suited for use in high-temperature furnaces, chemical processing, and heat exchangers.

    Scaling Resistance: Performs well in environments with scaling tendencies, thanks to the protective oxide layer formed by chromium.

    • Mechanical Properties:

    Tensile Strength and Ductility: Offers good tensile strength at high temperatures, allowing it to be used in applications that require mechanical stability under thermal stress.

    Ductility: Sufficiently ductile for drawing into wire, strips, or coils for various applications, including heating elements and resistors.

    • Weldability and Fabrication:

    Weldability: The alloy can be welded using standard techniques like TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding, although care must be taken to avoid excessive heat to prevent embrittlement in the weld area.

    Formability: Easily drawn into wire or formed into different shapes for manufacturing resistors, heating elements, and other components.


    Applications:

    • Heating Elements: Widely used in industrial heating elements, furnaces, and electric heating systems that operate at high temperatures.
    • Resistors: Suitable for precision resistors and resistance temperature detectors (RTDs), where stable and consistent electrical resistance is required at elevated temperatures.
    • Furnace Components: Frequently used in parts of high-temperature furnaces, electric ovens, and dryers where reliable performance in harsh conditions is needed.
    • Thermocouples and Temperature Sensors: Can be used in thermocouples and temperature sensors, where high-temperature stability and oxidation resistance are required.

    Advantages of Cr25Ni20 NiCr Alloy Wire:

    • High-Temperature Durability: Performs excellently in environments with temperatures up to 1000°C (1832°F), making it ideal for high-temperature applications like heating elements and industrial furnaces.
    • Superior Oxidation Resistance: The 25% chromium content provides excellent resistance to oxidation, ensuring long life even in harsh conditions.
    • Electrical Resistivity: Provides stable electrical resistivity, which is essential for applications like resistors and heating elements that require predictable performance over time.
    • Corrosion Resistance: Good resistance to sulfidation and scaling, making it reliable in high-temperature industrial applications.
    • Versatility: Easily processed into wire, strips, or coils, and can be welded for various uses in heating systems, furnaces, and other high-temperature applications.

    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.


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