Permalloy 80/Mumetal is a highly magnetic nickel-molybdenum-iron alloy, with roughly 80% nickel and 15% iron and 5% molybdenum content. It's useful as a magnetic core material in electrical and electronic equipment. Permalloy 80 provides high initial and maximum permeabilities with low coercive force, low hysteresis loss, low eddy-current losses, and low magnetostriction which is critical for industrial applications.
Forms: Sheet/Plate,Wire,Bar/Rod/Coil

Description

Permalloy 80 is a highly magnetic nickel-molybdenum-iron alloy, with roughly 80% nickel and 15% iron and 5% molybdenum content. It's useful as a magnetic core material in electrical and electronic equipment. Permalloy 80 provides high initial and maximum permeabilities with low coercive force, low hysteresis loss, low eddy-current losses, and low magnetostriction which is critical for industrial applications.

Application

Transformer laminations; Relay;Recording Heads;Deflection and Focusing Yokes; Amplifiers;Loudspeakers;Shielding.

parameter

Cross Reference

IEC	Russia	U.S.A	Japan
Ellc	79HM	4-79 Permalloy	-

Chemical Composition (%)

C	P	S	Cu	Mn	Si	Ni	Mo	Fe
≤
0.03	0.020	0.02	0.20	0.60~1.1	0.30~0.50	78.5~80.0	3.80~4.10	Balance

Mechanical Property

Resisitivity(μΩ•m )		0.55
Density(g/cm3)		8.6
Curie Point ℃		450
Brinell hardness HBS	unannealed	210
	annealed	120
Tensile Strength MPa	unannealed	1030
	annealed	560
Yield Strength MPa	unannealed	980
	annealed	150
Elongation (%)δ	unannealed	3
	annealed	50

Mechanical Property

Coefficient of Linear Expansion at Different Temperature/(×10-6/K)
20~ 100℃	20~ 200℃	20~ 300℃	20~ 400℃	20~ 500℃	20~ 600℃	20~ 700℃	20~ 800℃	20~ 800℃
10.3~ 10.8	10.9~ 11.2	11.4~ 12.9	11.9~ 12.5	12.3~ 13.2	12.7~ 13.4	13.1~ 13.6	13.4~ 13.6	13.2~ 13.7

Magnetic Property

Sorts	Distinction	(δ&D)/mm	μ0.08/(mH/m)	μm/(mH/m)	Bs/T	Hc/(A/m)
			≥			≤
Cold Rolling Strip	Ⅰ	0.005	12.5	44.0	0.75	6.4
		0.01	17.5	87.5	0.75	4.8
		0.02-0.04	20.0	112.5	0.75	4.0
		0.05-0.09	22.5	137.5	0.75	2.8
		0.10-0.19	25.0	162.5	0.75	2.0
		0.20-0.34	28.0	225.0	0.75	1.6
		0.35-1.00	30.0	250.0	0.75	1.2
		1.10-2.50	27.5	225.0	0.75	1.6
		2.50-3.00	26.3	187.5	0.75	2.0
	Ⅱ	0.02-0.04	22.5	125.0	0.75	2.4
		0.05-0.09	25.0	150.0	0.75	2.0
		0.10-0.19	27.5	187.5	0.75	1.6
		0.20-0.34	31.3	250.0	0.75	1.2
		0.35	32.5	275.0	0.75	0.96
	Ⅲ	0.01	25.0	150.0	0.73	2.4
		0.02-0.04	31.0	190.0	0.73	1.6
		0.05-0.09	38.0	250.0	0.73	1.2
		0.10-0.19	38.0	250.0	0.73	1.2
		0.20-0.34	38.0	280.0	0.73	1.0
		0.35	44.0	310.0	0.73	1.0
Hot Rolling flatspring	---	3-22	25.0	125.0	0.75	2.4
Hot Rolling Bar	---	8-100	25.0	125.0	0.75	2.4

Size Range

Sheet	Thickness 0.10mm~3.50mm,width:≤300mm
Plate	Thickness 3.5~40.0mm,width:≤500mm
Bar	Dia 5.0mm~Dia 8.0mm,length:≤2000mm
	Dia 8.0mm~Dia 32.0mm,length≤3000mm
	Dia 32.0mm~Dia 180.0mm,length:≤1300mm

Condition: (With max tolerance) cold rolled,bright,bright annealed,hot rolled,annealed,hot forging,peeled,turned,hot treated