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BYP31 (4J47) has the similar linear expansion coefficient with soft glasses in a range of temperature. As one of the thermal expansion alloys, it is often used where components must maintain tight tolerances during temperature fluctuations. This material also belongs to controlled expansion alloys, known for their ability to match expansion rates with ceramics or glass in electronic and sealing applications.Similar alloy's names in different trademark systems:
Beiye | China Standard | America | Germany | France |
BYP31 | 4J47 | Alloy 48 Class3 | Ni48 Ni49 | Fe-Ni48 |
Sealing alloys for soft glasses
Insulator
| Ni | 46.8~47.8 | Fe | bal. |
Cr | 0.8~1.4 |
| 25℃-400℃ | 8.1~8.7 (α, 10-6℃-1) |
Tensile Strength | Soft | Hard |
<590 MPa (85.6 ksi) | >700 Mpa (101.5 ksi) | |
Hardness | Deep-drawing State: ≤190HV | |
Gain Size | Deep-drawing State: ≥Level 7 |
| Density | 8.19 g/cm3 (0.296 lb/in3) |
| Resistivity | 55 µΩ•cm |
Thermal conduction | 20 W/K |
Elastic modulus | 145 Gpa |
Reach out to Beiye today to request a quote for our precision alloy and supply of BYP31 (4J47) controlled-expansion alloy!
