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BYP24 (4J42) has a certain linear expansion coefficient in a range of temperature, making it a controlled expansion alloys that exemplifies the precision achievable in thermal expansion alloys. Similar alloy's names in different trademark systems:
Beiye | China Standard | America | Germany | France | Japan |
BYP24 | 4J42 | NiCloy CarpanterL.E.42 Glass Sealing 42 GasFree Alloy 42 Glass5 | Nilo42 Vacodill Ni42 | FeNi42 | D 42FN NSD Fe-42Ni |
Passive layer of thermal bimetals
Sealing plugs
Glass sealing widgets
Camera sealing after silver plating
Ni | 41.0~42.5 | Fe | bal. |
25℃-300℃ | 4.0~5.0 |
25℃-450℃ | 6.5~7.4 (α, 10-6℃-1) |
Tensile Strength | Soft | Hard |
<590 MPa (85.6 ksi) | >700 Mpa (101.5 ksi) | |
Hardness | Thickness | Deep-drawing State |
>0.2~2.5mm | ≤165HV | |
>2.5mm | ≤170HV | |
Gain Size | Deep-drawing State: ≥Level 7 |
Density | 8.12 g/cm3 (0.293 lb/in3) |
Melting Point | 1430 ℃ (2606 ℉) |
Resistivity | 61 µΩ•cm |
Thermal conduction | 15 W/K |
Elastic modulus | 150 Gpa |
Contact Beiye for more precision alloy and supply options with BYP24 (4J42).
