Mumetal SuPermalloy (1J85) sheet/STRIP/ bar/Ring

Common Trade Names: Mumetal,UNS N14080, HY-MU80,Permalloy 80, 1J79, 79НМ,

Mumetal /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. Applications: • Transformer laminations      • Relay     • Recording Heads     •Deflection and Focusing Yokes     • Amplifiers      •Loudspeakers       •Shielding.

Grade	U.K.	Germany	U.S.A.	Russia	Standard
Mumetal (1J79)	Mumetal	/	Permalloy 80 HY-MU80	79HM	ASTM A753-78 GBn 198-1988

Mumetal Chemical Composition

Grade	Chemical Composition (%)
	C	P	S	Cu	Mn	Si	Ni	Mo	Fe
Mumetal  1J79	≤
	0.03	0.020	0.020	0.20	0.60~1.1	0.30~0.50	78.5~80.0	3.80~4.10	Balance

Mumetal Physical Property

Grade	Resistivity (μΩ•m)	Density (g/cm3)	Curie point °C	saturation magnetostriction constant (×10-2)	Tensile Strength/MPa		Yelid Strength/MPa
Mumetal 1J79					Unannealed	Annealed	Unannealed	Annealed
	0.40	8.20	980	2	1030	560	980	150

Mumetal Avager Linear Expansion

Grade	Coefficient of Linear Expansion at Different Temperaturel(x 10-6/K)
	20～100℃	20～ 200℃	20～ 300℃	20～400℃	20～ 500℃	20～ 600℃	20～ 700℃	20～ 800℃	20～ 900℃
Mumetal 1J79	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

  Mumetal Shielding Potential                                                                                                                                                                     Permalloy has extremely high permeability and nominal coercive force that make it a suitable material for shielding operations. To achieve the desired shielding properties, HyMu 80 is annealed up to 1900oF or 1040oC subsequent to forming processes. Annealing at the elevated temperatures enhances the permeability and shielding properties.