Jiangyin Chengxin Alloy Material Co., Ltd ，
| 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 |
| Brand Name | Senphus |
| Model Number | Cr25Ni20 |
| Certification | ISO9001 |
| Place of Origin | China |
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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 | 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 | Brand Name | Senphus |
| Model Number | Cr25Ni20 | Certification | ISO9001 |
| Place of Origin | China | ||
| High Light | Cr25Ni20 Austenitic Alloy ，Electric Heating Austenitic Alloy ，Large Specific Resistance Austenitic Alloy | ||
Cr25Ni20 Austenitic Alloy with Large Specific Resistance for Electric Heating Applications
Cr25Ni20 is a high-performance nickel-chromium-iron alloy consisting of approximately 25% chromium, 20% nickel, and the balance iron. This alloy is designed to withstand extreme conditions, offering excellent resistance to oxidation, carburization, and other forms of high-temperature corrosion. Its superior mechanical strength and stability at elevated temperatures make it ideal for applications in demanding industrial environments.
The alloy's composition provides a balance of oxidation resistance and structural integrity, mking it suitable for prolonged use in temperatures up to 1100°C (2012°F). It also exhibits good creep strength and resistance to thermal fatigue, essential for high-temperature industrial processes.
Cr25Ni20 is widely used in applications such as heat treatment equipment, furnace components, petrochemical processing, and power generation. Typical components include heating elements, radiant tubes, heat exchangers, and combustion systems. Its durability, resistance to scaling, and reliable performance in harsh environments make it a preferred material in industries requiring high-temperature strength and corrosion resistance.
|
Chemical Composition Wt.% Cr25Ni20 |
% | Ni | Fe | C | Si | Mn | P | S | Cr |
| Min | 19 | 24 | |||||||
| Max | 22 | Bal. | 0.02 | 0.8 | 0.8 | 0.02 | 0.015 | 26 |
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. | |||||||
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 |
Some key features of Cr25Ni20 include:
Maintains strength and structural integrity at temperatures up to 1100°C (2012°F), making it suitable for extreme heat applications.
Resists oxidation in both air and combustion environments, ensuring long-term performance in high-temperature settings.
Offers good resistance to carburization, nitridation, and sulfidation, even in chemically aggressive environments.
High tensile strength and creep resistance at elevated temperatures, ensuring reliability in demanding conditions.
Withstands thermal cycling and repeated heating and cooling without significant degradation or cracking.
Resists scaling and degradation in corrosive and oxidizing atmospheres, making it ideal for prolonged use in industrial processes.
Can be easily welded and fabricated into complex shapes for specific industrial requirements.
Suitable for a variety of industrial applications, including heat exchangers, furnace components, and petrochemical processing equipment.
These features make Cr25Ni20 a reliable choice for high-temperature, high-stress applications across multiple industries.
Applications:
Furnace Components: Used in furnace linings, trays, and fixtures due to its resistance to oxidation and thermal fatigue.
Heating Elements: Ideal for heating elements operating at high temperatures.
Reformer Tubes: Suitable for use in reformer and cracker tubes exposed to carburizing and oxidizing atmospheres.
Catalyst Support Structures: Withstands high temperatures in catalytic reactors.
Heat Exchangers: Used in boilers and other systems requiring resistance to thermal stress and corrosion.
Combustion Systems: Components in turbines, burners, and exhaust systems.
Exhaust Systems: Utilized in high-performance automotive and aircraft exhaust systems for its heat resistance.
Turbine Components: Suitable for hot gas environments in jet engines and power turbines.
Kiln Components: Lining materials and support structures in kilns and metallurgical equipment.
Rollers and Conveyor Belts: Used in industrial kilns and continuous casting operations.
Reactors and Retorts: Handles aggressive chemical environments in high-temperature reactors and chemical processing equipment.
Molds and Tools: Operates effectively in high-temperature glass forming processes.
Rotary Kilns: Utilized in components subjected to extreme heat and corrosive atmospheres during cement production.
Cr25Ni20’s ability to withstand high temperatures, corrosion, and mechanical stress makes it indispensable in industries where durability and reliability are critical.
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
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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