Customization: | Available |
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Product Type: | Wire |
Material: | Fenico |
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FeNi Glass Sealing Alloys | |
Grade | 4J42,4J45,4J50,4J52,4J54 |
Size | Strip:(0.03-0.1)mm*(180-250)mm (0.1-1.0)mm*(10-250)mm (1.0-3.0)mm*(100-250)mm Wire:0.1-6.0mm Bar:20-100mm(Hot forging) 2.0-20mm(Cold drawing) |
Features | It has a certain linear expansion coefficient in a certain temperature rang |
Application | Used as soft glass or ceraimc sealing material in the electric vacuum industry. |
Grade | C | P | S | Mn | Si | Al | Ni | Co | Fe |
4J42 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.8 | ≤0.3 | ≤0.1 | 41.5-42.5 | ≤1.0 | Bal. |
4J45 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.8 | ≤0.3 | ≤0.1 | 44.5-45.5 | / | Bal. |
4J50 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.8 | ≤0.3 | ≤0.1 | 49.5-50.5 | / | Bal. |
4J52 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.6 | ≤0.3 | / | 51.5-52.5 | / | Bal. |
4J54 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.6 | ≤0.3 | / | 53.5-54.5 | / | Bal. |
Density (g/cm3) | 8.21 |
Electrical resistivity at 20ºC(ohm.mm2/m) | 0.44 |
Thermal conductivity, λ/ W/(m*ºC) | 16.7 |
Curie point Tc/ ºC | 500 |
Elastic Modulus, E/ Gpa | 158 |
θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
20~100 | 9.8 | 20~400 | 9.4 |
20~200 | 9.8 | 20~450 | 9.4 |
20~300 | 9.5 | 20~500 | 9.7 |
20~350 | 9.4 | 20~600 | 10.6 |
Annealing | Heated to 900 ±20ºC in a hydrogen atmosphere |
Holding time, h | 1 hour |
cooling | With speed not more than 5 ºC / min. cooling to below 200 ºC |