Permalloy Ni79Mo4 Magnetic Alloy Manufacturer

Permalloy Ni79Mo4 Magnetic Alloy

View All: http://alloy-material.com

Introduction
Permalloy magnetic alloy is of Fi-Ni alloy with a wide nickel content range of 35%-90%. The biggest characteristic of permalloy is high magnetic permeability of weak magnetic field. And its saturation induction density is generally within 0.6-1.0T.

Type of supply

Style	Size
Wire	D= 0.1~8mm
Strip	W= 8~390mm	T= 0.3mm
Foil	W= 10~100mm	T= 0.01~0.1mm
Rod	Dia= 8~100mm	L= 50~1000mm

Application
Permalloy is used in aviation industry and other electronic industries for manufacturing electronic elements with features of high sensitivity, exact size, small size, low high frequency loss, good stability of time and temperature and special function.

Chemical composition (%)

Ni	78.5~80.0	Fe	Bal.	Mn	0.6~1.1	Si	0.3~0.5
Mo	3.8~4.1	Cu	≤0.2
C	≤0.03	P	≤0.02	S	≤0.02

Mechanical property

Yield strength	Tensile Strength	Elongation
Mpa	Mpa	%
980	1030	3~50

Physical property

Density (g/cm³)	8.6
Resistivity under 20℃(Ωmm²/m)	0.55
Linear expansion coefficient (20℃-200℃) X10-6/℃	10.3~11.5
Saturation magnetostrictive coefficient, λθ/ 10-6	2.0
Curie point, Tc/ ℃	450

Magnetic property

	Initial magnetic permeability	Max.magnetic permeability	Coercive force	Saturation induction intensity
Cold rolled strip/sheet material thickness, mm	μ0.08/ (mH/m)	μm/ (mH/m)	Hc/ (A/m)	BS/ T
	≥		≤
0.01	17.5	87.5	5.6	0.75
0.1~0.19	25.0	162.5	2.4
0.2~0.34	28.0	225.0	1.6
0.35~1.0	30.0	250.0	1.6
1.1~2.5	27.5	225.0	1.6
2.6~3.0	26.3	187.5	2.0
Hard drawn wire Diameter (mm)
0.1 mm	6.3	50	6.4
Bar Diameter (mm)
8-100 mm	25	100	3.2

Heat treatment process

Annealing medium	Dry hydrogen ( dew point is no more than -40℃) or vacuum, and the residual pressure is no more than 0.1Pa
Heating temperature and speed	1100~1150℃
Heat preservation (h)	3~6
Cooling speed	Be cooled to 600℃ at a speed of 100 ~ 200 ℃/ h, then be quickly cooled to 300℃.

Index
nickel iron alloy, alloy strip, alloy rod