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 | 8.10 |
| Resistivity at 20 ℃ | 1.18±0.05 |
| Melting point（℃） | 1380 |
| Thermal conductivity(KJ/mh ℃ ) | 45.2 |
| Elongation at rupture（% ) | >20 |
| Brand Name | Senphus |
| Model Number | Cr30Ni70 |
| Certification | ISO9001 |
| Place of Origin | China |
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NiCr Alloy Cr30Ni70 For High-Temperature Applications In Furnaces And Heat
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 | 8.10 | Resistivity at 20 ℃ | 1.18±0.05 |
| Melting point（℃） | 1380 | Thermal conductivity(KJ/mh ℃ ) | 45.2 |
| Elongation at rupture（% ) | >20 | Brand Name | Senphus |
| Model Number | Cr30Ni70 | Certification | ISO9001 |
| Place of Origin | China | ||
| High Light | Cr30Ni70 Nickel-Chromium-Iron Alloy Wire ，High Strength NiCr Alloy ，Anti-Corrosion NiCr Alloy | ||
NiCr Alloy Cr30Ni70 for High-Temperature Applications in Furnaces and Heat-Treating Equipment
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. | |||||||
| Chemical Composition Wt.% Cr30Ni60 | % | Ni | Fe | C | Si | Mn | P | S | Cr | Al |
| Min | 0.75 | 28 | ||||||||
| Max | Rest | 0.08 | 0.08 | 1.6 | 0.6 | 0.02 | 0.015 | 31 | 0.5 |
Some key features of Cr30Ni70 include:
High Electrical Resistivity: Cr30Ni70 has a high electrical resistivity, which is beneficial for applications requiring efficient heating elements.
Corrosion Resistance: The alloy exhibits excellent resistance to corrosion, making it suitable for use in environments with corrosive substances.
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.
Oxidation Resistance: Cr30Ni70 has good resistance to oxidation, which is important for long-term performance in high-temperature environments.
Thermal Expansion: The alloy has a low positive temperature coefficient, ensuring consistent performance in applications sensitive to temperature changes.
Mechanical Properties: At room temperature, Cr30Ni70 has high plasticity, which allows for excellent cold stamping and welding properties.
Microstructure: After solution treatment, Cr30Ni70 has a single-phase austenite structure, contributing to its structural stability during use.
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.
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
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. | ||||
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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