Wholesale Permanent Magnets - Alnico Magnet – Horizon

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Wholesale Permanent Magnets - Alnico Magnet – Horizon Detail:

Alnico magnet is a type of hard magnet mainly composed of alloys of Aluminum, Nickel, and Cobalt. It is manufactured through either casting or sintering process. Before rare earth magnets were developed in 1970, Alnico magnet was the strongest type of permanent magnet and widely used. Nowadays, in many applications Alnico has been replaced by Neodymium or Samarium Cobalt magnet. However, its property like temperature stability and very working high temperatures makes Alnico magnets indispensable in certain application markets.

1. High magnetic field. Residual induction is high to 11000 Gauss almost similar to Sm2Co17 magnet, and then it can produce high magnetic field around.

2. High working temperature. Its maximum working temperature can be high to 550⁰C.

3. High temperature stability: Alnico magnets have the best temperature coefficients of any magnet material. Alnico magnets should be regarded as the best choice in extremely high temperature applications.

4. Excellent corrosion resistance. Alnico magnets are not prone to corrosion and can normally be used without any surface protection

1. Easy to demagnetize: Its maximum low coercive force Hcb is lower than 2 kOe and then it is easy to demagnetize in some low demagnetizing field, even not handled with care.

2. Hard and brittle. It is prone to chipping and cracking.

1. As the coercivity of Alnico magnets is low, the ratio of length to diameter should be 5:1 or larger so as to get a good work point of Alnico.

2. As Alnico magnets are easily demagnetized by careless handling, it is recommended to make the magnetizing after assembly.

3. Alnico magnets offer outstanding temperature stability. The output from Alnico magnets varies the least with changes in temperature, making it an ideal choice for temperature sensitive applications, such as medical and military.

Definitely we are not an Alnico magnet manufacturer, but we are an expert in magnetic types of permanent magnets including Alnico. Moreover, our own produced rare earth magnets and magnetic assemblies will enable customers to have a one-stop purchase of magnet products from us conveniently.

Cast / Sintered	Grade	Equivalent MMPA	Br	Hcb	(BH)max	Density	α(Br)	TC	TW
Cast / Sintered	Grade	Equivalent MMPA	mT	KA/m	KJ/m³	g/cm³	%/ºC	ºC	ºC
Cast	LNG37	Alnico5	1200	48	37	7.3	-0.02	850	550
	LNG40		1230	48	40	7.3	-0.02	850	550
	LNG44		1250	52	44	7.3	-0.02	850	550
	LNG52	Alnico5DG	1300	56	52	7.3	-0.02	850	550
	LNG60	Alnico5-7	1330	60	60	7.3	-0.02	850	550
	LNGT28	Alnico6	1000	56	28	7.3	-0.02	850	550
	LNGT36J	Alnico8HC	700	140	36	7.3	-0.02	850	550
	LNGT18	Alnico8	580	80	18	7.3	-0.02	850	550
	LNGT38		800	110	38	7.3	-0.02	850	550
	LNGT44		850	115	44	7.3	-0.02	850	550
	LNGT60	Alnico9	900	110	60	7.3	-0.02	850	550
	LNGT72	Alnico9	1050	112	72	7.3	-0.02	850	550
Sintered	SLNGT18	Alnico7	600	90	18	7.0	-0.02	850	450
	SLNG34	Alnico5	1200	48	34	7.0	-0.02	850	450
	SLNGT28	Alnico6	1050	56	28	7.0	-0.02	850	450
	SLNGT38	Alnico8	800	110	38	7.0	-0.02	850	450
	SLNGT42	Alnico8	850	120	42	7.0	-0.02	850	450
	SLNGT33J	Alnico8HC	700	140	33	7.0	-0.02	850	450

Characteristics	Reversible Temperature Coefficient, α(Br)	Reversible Temperature Coefficient, β(Hcj)	Curie Temperature	Max Operating Temperature	Density	Hardness, Vickers	Electrical Resistivity	Coefficient of Thermal Expansion	Tensile Strength	Compression Strength
Unit	%/ºC	%/ºC	ºC	ºC	g/cm³	Hv	μΩ • m	10^-6/ºC	Mpa	Mpa
Value	-0.02	-0.03~+0.03	750-850	450 or 550	6.8-7.3	520-700	0.45~0.55	11~12	80~300	300~400

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Alnico Magnet