Alliance N-40 Neodymium Iron Boron Magnetic Material

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Alliance N-40 Neodymium Iron Boron Magnetic Material
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.
Key Words:	NdFeB; Neo, Magnet, Magnets
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Physical Properties	Metric	English	Comments

Density	>= 7.50 g/cc	>= 0.271 lb/in³
	7.50 - 7.80 g/cc	0.271 - 0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Vickers	570 - 580	570 - 580
Tensile Strength	82.7 MPa	12000 psi
Tensile Strength, Ultimate	80.0 MPa	11600 psi
Modulus of Elasticity	152 GPa	22000 ksi
	150 - 160 GPa	21800 - 23200 ksi
Flexural Strength	180 - 270 MPa	26100 - 39200 psi
Compressive Strength	850 - 1050 MPa	123000 - 152000 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000120 - 0.000160 ohm-cm	0.000120 - 0.000160 ohm-cm
	0.000160 ohm-cm @Temperature 20.0 °C	0.000160 ohm-cm @Temperature 68.0 °F
Magnetic Coercive Force, H_c	11600 Oe	11600 Oe
	10800 - 12800 Oe	10800 - 12800 Oe
	12000 Oe	12000 Oe	Intrinsic
	12000 - 18000 Oe	12000 - 18000 Oe	Intrinsic
Magnetic Remanence, B_r	1600 - 12900 Gauss	1600 - 12900 Gauss
	12700 Gauss	12700 Gauss
Magnetic Maximum Energy Product, BH	38 - 41 MGOe	38 - 41 MGOe
	38 - 41 MGOe	38 - 41 MGOe
Curie Temperature	310 °C	590 °F
	310 °C	590 °F

Thermal Properties	Metric	English	Comments
CTE, linear	-4.80 µm/m-°C	-2.67 µin/in-°F	Perpendicular to M
	3.40 µm/m-°C	1.89 µin/in-°F	Parallel to M
	5.00 µm/m-°C @Temperature 20.0 °C	2.78 µin/in-°F @Temperature 68.0 °F	Parallel DOM
CTE, linear, Transverse to Flow	-1.00 µm/m-°C @Temperature 23.0 °C	-0.556 µin/in-°F @Temperature 73.4 °F	Perpendicular to M
Specific Heat Capacity	0.440 J/g-°C	0.105 BTU/lb-°F
Thermal Conductivity	9.00 W/m-K	62.5 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	80.0 °C	176 °F
	<= 80.0 °C	<= 176 °F	Continuous

Descriptive Properties
Reversible Temperature Coefficients	-0.12		α Br. %/°C
	-0.65		β Hcj. %/°C

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NALLIAN03 / 14828

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