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Home > Product Information : Permalloy materials(YFN-45)


YFN-45
Permalloy materials

YFN-45

Characteristics

•YFN-45 is the PB type permalloy.
•YFN-45 has the high permeability and high magnetic flux density.
•YFN-45 can be supplied by low cost rather than PC permalloy.
•YFN-45 that has big magnetic flux density is the most suitable for yoke parts of watch, clock and so on.
•Referential standards: JIS C2531

Chemical composition(wt%)

Ni Fe
45 Bal.

Mechanical properties

Temper Hardness(HV)
A 120-160
1/2H 180-220
R 200-250

Physical properties

Density(20) g/cm3 8.25
Electrical resistivity µ•m 0.45
Coefficient of thermal expansion X10-6/ 7(30-300)
Modulus of elasticity GPa 160
Curie point 450
Melting point 1425

Our furnace for magnetic annealing

Our furnace for magnetic annealing

High Temperature annealing

YFN-45's permeability is maximized through high temperature annealing.

recommendatory atmosphere Hydrogen
recommendatory temp. 1,100
recommendatory keeping time min. 2 hours
recommendatory cooling condition cool it down in furnance

Magnetic properties (DC)

Initial permeability µi 3,000
Maximum permeability µm 30,000
Coercive force Hc 16A/m
Magnetic flux density B1000 1.4T

Hysteresis curve of YFN-45

Hysteresis curve of YFN-45

Magnetic properties (AC)

Inductance µe 0.3kHz 1.0kHz
0.15mm(t) 3,600 2,400
0.30mm(t) 3,000 2,200
0.40mm(t) 1,800 900

Inductance curve of YFN-45

Inductance curve of YFN-45

Manufacturing range

Product form coil
Thickness (mm) 0.05-1.50
Width (mm) 6-510
Main application

Main application

•Stepper motors for watch and clock:
Yoke
Stator
•Transformer cores:
Modem transformer
Audio transformer
•Automotive instruments:
Magnetic shield cases
•Relay cores
•Various yoke parts:
Various magnetic circuits that need high magnetic flux density.

The specifications shown above are those as of Jan., 2015.
The specifications are subject to change without prior notice.

Inquiries

DOWA METALTECH CO.,LTD.
METAL PROCESSING BUSINESS UNIT SALES DEPARTMENT II
TEL 81-(0)53-453-4223 FAX 81-(0)53-453-4226



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