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BYP41 (4J49) has the similar linear expansion coefficient with soft glasses in a range of temperature. This critical characteristic is intrinsic to its design as controlled expansion alloys, making it one of the essential expansion alloys for reliable glass-to-metal sealing. Similar alloy's names in different trademark systems:
Beiye | China Standard | Germany | France |
BYP41 | 4J49 | Ni47Cr | Fe-Ni47Cr5 |
Sealing alloys for soft glasses
Anode cap of electron-beam tube
| Ni | 46.0~48.0 | Fe | bal. |
Cr | 5.0~6.0 |
| 25℃-300℃ | 8.6~9.3 |
| 25℃-400℃ | 9.4~10.1 (α, 10-6℃-1) |
Tensile Strength | Soft | Hard |
490~610 MPa (71.1~88.5 ksi) | ≤930 Mpa (134.9 ksi) | |
Elongation | >20% |
| Density | 8.18 g/cm3 (0.296 lb/in3) |
| Resistivity | 90 µΩ•cm |
Thermal conduction | 18 W/K |
Elastic modulus | 163 Gpa |
Don't hesitate to contact us for a quote on BYP41 (4J49), backed by Beiye's dependable precision alloy and supply.
