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BYP45 (4J52) Controlled-Expansion Alloy
Overview of BYP45 (4J52) Controlled-Expansion Alloy
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BYP45 (4J52) has a certain linear expansion coefficient in a range of temperature. Similar alloy's names in different trademark systems:

Beiye

China Standard

America

Germany

France

BYP45

4J52

Niloy 52

FeNi52

NiFe47

N52



kovar thermal expansion

The Typical Applications of This Alloy are

  • Soft lead glass

  • Soft glass sealing for television

  • Small tail

  • Welding electrodes for cast iron

  • Power pipe spiral gate support


Typical Chemical Composition in Percent


Ni

51.5~52.5

Fe

bal.



Typical Linear Expansion Coefficient


25℃-300℃

9.8~11.0

25℃-400℃

9.8~11.0 (α, 10-6-1)



Typical Mechanical Properties


Tensile Strength

Soft

Hard


<590 MPa (85.6 ksi)

>720 Mpa (104.4 ksi)

Hardness

Thickness

Deep-drawing State


>0.2~2.5mm

≤165HV

>2.5mm

≤170HV

Gain Size

Deep-drawing State: ≥Level 7



Typical Physical Properties

Density

8.25 g/cm3 (0.298 lb/in3)

Melting Point

1430 ℃ (2606 ℉)

Resistivity

44 µΩ•cm

Thermal conduction

17 W/K

Elastic modulus

161 Gpa


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Thank You for Your Attention on Beiye!
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