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BYP27 (4J42k) Controlled-Expansion Alloy
Overview of BYP27 (4J42k) Controlled-Expansion Alloy
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BYP27 (4J42k) is suitable for lead frame of large scale integrated circuits and other electronic components, with its precise matching characteristics making it an exemplary controlled expansion alloys among expansion alloys. Similar alloy's names in different trademark systems:

Beiye

China Standard

BYP27

4J42k



kovar thermal expansion BYP27 4J42K Controlled Expansion Alloy

The Typical Applications of This Alloy are

  • Mobile phones

  • Digital camera

  • Laptop

  • DVD recorder

  • Telecommunication equipment

  • Office automation equipment


Typical Chemical Composition in Percent


Ni

40.0~42.5

Fe

bal.



Typical Linear Expansion Coefficient


25℃-300℃

4.0~4.7

25℃-450℃

6.7~7.4 (α, 10-6-1)



Typical Mechanical Properties


Hardness

185~220 HV

Tensile Strength

588~735 MPa (85.2~106.6 ksi)

Elongation

5~20%



Typical Physical Properties


Density

8.12 g/cm3 (0.293 lb/in3)

Melting Point

1430 ℃ (2606 ℉)

Resistivity

64 µΩ•cm

Thermal conduction

16 W/K

Elastic modulus

150 Gpa



Check out our variety of BYP27 precision alloy and supply options available from Beiye!



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