Cr20Ni30 Austenitic Stainless Steel Alloy For Superior Mechanical Properties And More
Price:
Negotiable
MOQ:
5kg
Delivery Time:
3 days
Brand:
Senphus
Product Description
Cr20Ni30 The Austenitic Stainless Steel Alloy for Superior Mechanical Properties and More
NiCr Alloy Wire Cr20Ni30 is a high-performance electric heating alloy wire, widely used in industrial furnaces, heaters, and other applications. It contains 20% to 21% chromium and 30% to 34% nickel, with a maximum continuous service temperature of 1100°C and a melting point of approximately 1390°C. The alloy has a resistivity of 1.04±0.05 μΩ·m at 20°C, a density of 7.9 g/cm³, and an elongation at rupture of over 20%. It exhibits good oxidation resistance, form stability, ductility, and weldability, making it suitable for various heating applications. Typical applications include solid hot plates, open coil heaters, night-storage heaters, and resistors. The alloy is non-magnetic and has a coefficient of linear expansion of 19×10⁻⁶/°C from 20°C to 1000°C.
|
Chemical Composition Wt.% Cr20Ni30 |
% | Ni | Fe | C | Si | Mn | P | S | Cr |
| Min | 30 | 1 | 18 | ||||||
| Max | 34 | Bal. | 0.08 | 3 | 1 | 0.02 | 0.015 | 21 |
Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys
|
Type
|
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. | |||||||
Key Features of NiCr Alloy Wire Cr20Ni30:
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High Temperature Resistance: It has a maximum continuous service temperature of 1100°C and a melting point of around 1390°C, making it suitable for high-temperature heating applications.
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Good Oxidation Resistance: The alloy forms a protective oxide layer on its surface at high temperatures, which helps prevent further oxidation and extends the service life of the wire.
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Stable Electrical Resistivity: With a resistivity of 1.04±0.05 μΩ·m at 20°C, it provides stable and reliable electrical performance, ensuring consistent heating output.
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Excellent Ductility and Formability: It can be easily bent, shaped, and formed into various configurations without breaking, allowing for flexibility in designing heating elements.
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High Tensile Strength and Elongation: Possessing a tensile strength of 650 MPa and an elongation of over 20%, it can withstand mechanical stress during installation and operation.
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Non-Magnetic: The alloy is non-magnetic, which is beneficial in applications where magnetic interference needs to be minimized.
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Good Weldability: It can be welded using standard welding techniques, facilitating the fabrication of complex heating assemblies.
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Corrosion Resistance: It exhibits good resistance to corrosion in many environments, enhancing its durability and reliability in various industrial settings.
Applications:
Industrial Applications
- Heating Elements for Industrial Furnaces
Heat Treatment Processes: Used in annealing, tempering, and sintering processes.
Glass and Ceramic Production Kilns: Ideal for high-temperature operations.
Metallurgical Melting and Casting: Suitable for heating elements in furnaces used for metal melting and casting.
- Cutting and Welding Technologies
Hot Wire Foam Cutting: Used in the packaging and construction industries for precise shaping of polystyrene and similar materials.
Welding Equipment: Used as heating components in spot welders and other thermal joining tools.
- Petrochemical and Process Industries
Hydrocarbon Cracking and Reforming Heaters: Used in heaters for cracking and reforming hydrocarbons.
Catalytic Reactors and Chemical Vapor Deposition Systems: Used in processing equipment requiring controlled thermal environments.
- Consumer Applications
- Household Heating Devices
Toasters and Ovens: Widely used for their stable heating properties.
Hair Dryers and Irons: Preferred for their high resistance to oxidation and long service life.
Electric Space Heaters: Serve as core components for efficient heat generation.
- Electronic Cigarettes
Heating Coils: Commonly used in the heating coils of electronic cigarettes due to their consistent performance and compatibility with temperature control technologies.
- Defrosting and Demisting
Car Windows and Refrigeration Units: Embedded in car windows and refrigeration units to provide rapid defrosting and demisting solutions.
- Emerging Applications
- 3D Printing
Polymer Extrusion and Sintering: Used as heating elements in 3D printing applications.
- Energy Storage Systems
Thermal Energy Storage Units: Used in thermal energy storage units for renewable energy solutions.
- Specific Applications
- Cartridge Heaters
Industrial and Commercial Use: Cartridge heaters are cylindrical and specifically shaped to fit into holes for precise and localized heating at high temperatures. They are used in various industrial applications for heating metal parts from the inside.
- Defrost Heaters
Rapid Defrosting Solutions: Used in car windows and refrigeration units to provide rapid defrosting and demisting.
Efficient Heat Transfer: Used in various industrial applications for efficient heat transfer.
- Industrial Furnaces
These applications highlight the versatility and reliability of NiCr Alloy Wire Cr20Ni30 in both industrial and consumer settings.
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. | ||||
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Company
Jiangyin Chengxin Alloy Material Co., Ltd ，
Location
Building 3, No. 29, Beitanghe East Road, Qinglong Street, Tianning District, Changzhou City, Jiangsu Province
Contact Person
Changfeng Ye