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NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment

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    Buy cheap NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment from wholesalers
     
    Buy cheap NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment from wholesalers
    • Buy cheap NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment from wholesalers
    • Buy cheap NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment from wholesalers
    • Buy cheap NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment from wholesalers

    NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment

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    Brand Name : Senphus
    Model Number : Cr30Ni70
    Certification : ISO9001
    Price :
    Payment Terms : T/T, D/P
    Supply Ability : 30 Tons per day
    Delivery Time : 3 days
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    • Company Profile

    NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment

    NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment


    Cr30Ni70, with approximately 30% chromium and the balance being nickel, is prized for its high electrical resistivity, which is over 10 times that of stainless steel, offering superior heating efficiency. This alloy exhibits excellent corrosion resistance, making it suitable for a variety of corrosive environments. It maintains its strength and stability at high temperatures, with a maximum service temperature of 1250°C . Cr30Ni70 also demonstrates good oxidation resistance and stability, critical for applications requiring long-term exposure to high heat . The alloy's low positive temperature coefficient below 1050°C ensures consistent performance in temperature-sensitive applications . At room temperature, it boasts high plasticity and excellent cold stamping and welding properties . After solution treatment, Cr30Ni70 presents a single-phase austenite structure, contributing to its structural stability during use . These characteristics make Cr30Ni70 an ideal material for high-temperature resistance elements and heating elements in various industrial applications.

    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.

    Chemical Composition Wt.% Cr30Ni60%NiFeCSiMnPSCrAl
    Min0.7528
    MaxRest0.080.081.60.60.020.015310.5

    Some key features of Cr30Ni70 include:

    1. High Electrical Resistivity: Cr30Ni70 has a high electrical resistivity, which is beneficial for applications requiring efficient heating elements.

    2. Corrosion Resistance: The alloy exhibits excellent resistance to corrosion, making it suitable for use in environments with corrosive substances.

    3. High-Temperature Stability: It maintains its properties at high temperatures, with a maximum service temperature of around 1250°C, which is vital for high-temperature applications.

    4. Oxidation Resistance: Cr30Ni70 has good resistance to oxidation, which is important for long-term performance in high-temperature environments.

    5. Thermal Expansion: The alloy has a low positive temperature coefficient, ensuring consistent performance in applications sensitive to temperature changes.

    6. Mechanical Properties: At room temperature, Cr30Ni70 has high plasticity, which allows for excellent cold stamping and welding properties.

    7. Microstructure: After solution treatment, Cr30Ni70 has a single-phase austenite structure, contributing to its structural stability during use.

    8. Weldability: The alloy is relatively easy to weld, which is an advantage in applications where components need to be joined without compromising the material's integrity.

    These features make Cr30Ni70 a popular choice for applications in the electrical, chemical, aerospace, and metallurgical industries, particularly for high-temperature resistance elements and heating elements.


    Applications:

    • Heating Elements in Industrial Furnaces: Cr30Ni70 is commonly used for manufacturing heating elements in industrial electric furnaces, where its excellent high-temperature oxidation resistance and creep resistance are beneficial for long-term stable operation at high temperatures

    • Household Appliances: It is used in electric heating elements within household appliances, such as in electric ovens, water heaters, and ironing boards, due to its long service life and uniform heating capabilities

    • Resistors and Heating Elements: Cr30Ni70 is utilized in industrial furnaces (wirewound resistors, metal film resistors), injection molds, and soldering irons, where its high resistivity and good weldability are advantageous .

    • High-Temperature Sensors: The alloy serves as a material for high-temperature sensors in industrial processes that require precise temperature measurement, thanks to its stable resistivity and oxidation resistance at high temperatures

    • Aerospace Industry: Cr30Ni70 is used in the aerospace field for high-temperature engine parts and heat barrier materials, leveraging its high-temperature strength and oxidation resistance

    • Metal Sheathed Tubular Elements: The alloy is used in the production of metal sheathed tubular elements and cylindrical elements, showcasing its versatility in various forms and applications


    These applications highlight the versatility and importance of Cr30Ni70 in various industries where high temperatures and resistance to heat and corrosion are critical factors.


    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

    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.

    Quality NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment for sale
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