Alliance N-38AH Sintered NdFeB Neodymium Magnet

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Alliance N-38AH Sintered NdFeB Neodymium Magnet
Categories:	Metal; Electronic/Magnetic Alloy; Ferrous Metal
Material Notes:	Neodymium magnets (NdFeB or Neo), are the most commonly used magnet materials for high tech motors and sensors. They are popular due to their high magnetic strength and resistance to demagnetization. They do not have the high temperature resistance of other magnet materials, however they can be used in applications with maximum operating temperatures of 220°C. Because of a high iron content, they will corrode over time if not plated or coated. As with all magnet materials, NdFeB should never be used as a structural element in an application. Information provided by Alliance LLC.
Key Words:	Neodymium Iron Boron Permanent Magnet
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Physical Properties	Original Value	Comments

Density	>= 7.50 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength	12000 psi
Modulus of Elasticity	22000 ksi

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000160 ohm-cm @Temperature 20.0 °C
Magnetic Coercive Force, H_c	11600 - 13600 Oe
	35000 - 42000 Oe	Intrinsic
Magnetic Remanence, B_r	12200 - 12600 Gauss
Magnetic Maximum Energy Product, BH	35 - 39 MGOe
Curie Temperature	310 °C

Thermal Properties	Original Value	Comments
CTE, linear	-4.80 µm/m-°C	Perpendicular to M
	3.40 µm/m-°C	Parallel to M
Maximum Service Temperature, Air	<= 220 °C	Continuous

Descriptive Properties
Composition	Nd, B, Fe, Dy, Co
Required Magnetizing Force (Oe)	60000
Reversible Temperature Coefficients	-0.09	α Br. %/°C
	-0.45	β Hcj. %/°C

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NALLIAN9831 / 268414

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