Customization: | Available |
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Application: | Aviation, Electronics, Industrial, Medical, Chemical |
Standard: | JIS, GB, DIN, BS, ASTM, AISI |
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Cr30Ni70 strip refers to a strip made of an alloy containing 30% chromium (Cr) and 70% nickel (Ni). This alloy is another type of Nichrome alloy, which, like the Ni80Cr20 alloy, is widely used for its high electrical resistance.
The Cr30Ni70 alloy has similar applications to Ni80Cr20, including in heating elements for various appliances and industrial equipment. The specific composition of this alloy may offer slightly different electrical and thermal properties compared to Ni80Cr20, which can make it suitable for specific applications where those properties are desired.
Overall, Cr30Ni70 strips are utilized in various heating applications where stable electrical resistance at high temperatures is required, including in ovens, furnaces, electric heaters, and other heating devices.
Performance\ material | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
Composition | Ni | 90 | Rest | Rest | 55.0~61.0 | 34.0~37.0 | 30.0~34.0 |
Cr | 10 | 20.0~23.0 | 28.0~31.0 | 15.0~18.0 | 18.0~21.0 | 18.0~21.0 | |
Fe | - | ≤1.0 | ≤1.0 | Rest | Rest | Rest | |
Maximum temperatureºC | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
Meltiing point ºC | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
Density g/cm3 | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Resistivity at 20ºC((μΩ·m) | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | ||
Elongation at rupture | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
Specific heat J/g.ºC |
- | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | |
Thermal conductivity KJ/m.hºC |
- | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
Coefficient of lines expansion a×10-6/ (20~1000ºC) |
- | 18 | 17 | 17 | 19 | 19 | |
Micrographic structure | - | Austenite | Austenite | Austenite | Austenite | Austenite | |
Magnetic properties | - | Non-magnetic | Non-magnetic | Non-magnetic | Weak magnetic | Weak magnetic |