Factory-Made High Permeability Soft Magnetic Alloy For Efficient Power Conversion

Permalloy 80 is a highly magnetic nickel-iron-molybdenum 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. Commercial permalloy alloys typically have relative permeability of around 100,000, compared to several thousand for ordinary steel. It provides maximum magnetic permeabilities and minimal core losses at low field strengths. This vacuum-melted product also offers the advantages of small size and weight in magnetic core and shielding materials for the applications shown below. Other magnetic properties are near zero magnetostriction, and significant anisotropic magnetoresistance. 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, allowing it to be used in thin films where variable stresses would otherwise cause a large destructive variation in magnetic properties.High sensitivity and small power transformers, magnetic amplifiers, relays, chokes, magnetic heads for magnetic recording devices, magnetic shields, various tape wound cores, cut cores, and laminated cores used in weak magnetic fields.

Material	C	P	S	Mn	Si	Ni	Cr	Co	Mo	Cu	Fe
	Max
Permalloy80	0.03	0.020	0.020	0.3-0.6	0.15-0.30	79.0-81.0	-	-	4.8-5.2	≤0.2.	Rest

AC magnetic properties of high permeability soft magnetic alloy：

Material	Shape	Thickness (mm)	When the peak magnetic field strength is 0.1A/m, the elastic permeability at different frequencies μm3 (mH/m)
			60Hz	400Hz	1kHz	10kHz
			No less than
Permalloy80	Cold rolled strip	0.02	-	-	16000（20）	12000（15）
		0.05	-	-	25040（31.3）	9040（11.3）
		0.10	-	25040（31.3）	20000（25）	-
		0.20	-	19040（23.8）	8000（10）	-
		0.35	38	10000（12.5）	-	-

DC magnetic properties of high permeability soft magnetic alloy：

Material	Shape	Class	Thickness or Diameter mm	Magnetic permeability in 0.08A/m magnetic field intensity μ0.4（mH/m）	Maximum permeability μm（mH/m）	Coercivity(under saturation magnetic induction)Hc/A·m-1	Saturation magnetic induction Bs/T
				not less than		no greater than
Permalloy80	Cold rolled strip	Ⅰ	0.03-0.04	18000（22.5）	80000（100）	3.6	0.70
			0.05-0.09	28000（35）	110000（137.5）	2.4	0.70
			0.10-0.19	30000（37.5）	150000（187.5）	1.6	0.70
			0.20-0.34	40000（50）	180000（225）	1.2	0.70
			0.35-1.00	50000（62.5）	250000（312.5）	0.8	0.70
			1.10-2.50	40000（50）	150000（187.5）	1.2	0.70
		Ⅱ	0.03-0.04	30000（37.5）	110000（137.5）	2.4	0.70
			0.05-0.09	40000（50）	140000（175）	1.6	0.70
			0.10-0.19	50000（62.5）	180000（225）	1.2	0.70
			0.20-0.34	60000（75）	200000（250）	1.0	0.70
			0.35	55040（68.8）	260000（325）	0.7	0.70
	Hot rolled tape		4.5-20	30000（37.5）	100000（125）	1.6	0.70
	Hot forged bar		20-100	30000（37.5）	100000（125）	1.6	0.70

High Permeability Soft Magnetic Alloy

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