Alnico | HB SPEICAL ALLOY

AlNiCo Cast Permanent Magnetic Alloys

AlNiCo8/4, AlNiCo9/5, AlNiCo12/6, AlNiCo17/9, AlNiCo37/5, AlNiCo44/5, AlNiCo52/6, AlNiCo26/6, AlNiCo38/11, AlNiCo60/11, AlNiCo36/15, AlNiCo28/10, AlNiCo44/14, AlNiCo72/11, AlNiCo80/12

Alnico is the first developed permanent magnet material. It is an alloy composed of aluminum, nickel, cobalt, iron and other trace metal elements. Alnico permanent magnet material was successfully developed in the 1930s. At that time, it had the best magnetic performance and small temperature coefficient, so it was most widely used in permanent magnet motors.

Chemical Composition and Magnetic Properties

Alloy	Chemical Composition, %							Magnetic properties					Typical density/g.cm-3
	Al	Co	Cu	Nb	Ni	Ti	Fe	Maximum eneMax energy product (BH)max, kJ.m-2	Magnetic retentivity Br/mT	Corecive force Hcb/kA.m-1	Corecive force Hci/kA.m-1	Relative recovery perameability/μr
	Typical value							Specified minimum value
AlNiCo8/4	11-13	0-1	2-4	–	21-28	0-1	Rest	8	520	40	43	4.5-5.5	6.9
AlNiCo9/5	11-13	0-5	2-4	–	21-28	0-1	Rest	9	550	44	47	6.0-7.0	–
AlNiCo12/6	9-13	12-17	2-6	–	18-24	0-1	Rest	11.6	630	52	55	4.0-5.5	–
AlNiCo17/9	6-8	24-34	3-6	–	13-19	5-9	Rest	17	580	80	86	3.0-4.0	7.3
AlNiCo37/5	8-9	23-26	3-4	0-1	14-16	–	Rest	37	1180	48	49	3.0-4.5	7.3
AlNiCo44/5	8-9	23-26	3-4	0-1	13-15	–	Rest	44	1200	52	53	2.5-4.0	7.3
AlNiCo52/6	8-9	23-26	3-4	0-1	13-15	–	Rest	52	1250	55	56	1.5-3.0	7.3
AlNiCo26/6	7-9	25-27	3-4	0-3	13-15	0-1	Rest	26	900	56	68	3.5-5.5	7.3
AlNiCo38/11	6-8	30-36	3-4	0-1	13-15	4-6	Rest	38	800	110	112	1.5-2.5	7.3
AlNiCo60/11	6-8	35-39	2-4	0-1	13-15	4-6	Rest	60	900	110	112	1.5-2.5	7.3
AlNiCo36/15	6-8	38-42	2-4	0-1	13-15	7-9	Rest	36	700	140	148	1.5-2.5	7.3
AlNiCo28/10*	6-8	24-34	3-6	0-1	13-19	5-9	Rest	28	750	104	105	1.5-2.5	7.3
AlNiCo44/14*	6-8	35-39	2-4	0-1	13-15	7-9	Rest	44	800	136	140	1.5-2.5	7.3
AlNiCo72/11**	6-8	34-36	2-4	0-1	13-15	7-9	Rest	72	1050	112	114	1.5-2.5	7.3
AlNiCo80/12**	6-8	34-42	2-4	0-1	13-15	7-9	Rest	80	1050	120	122	1.5-2.5	7.3

Physical Properties

Alloy	L/D	Temperature coefficient αBr/%.K-1
LNG40	3	-0.016
	4	-0.016
	8	-0.022
LNGT28	3.6	-0.02
LNGT28	8	-0.032
LNGT32	2	-0.001
	3	-0.005
	6	-0.007

Curie temperature ℃	850-890
Maximum working temperature ℃	550
Density g/cm-3	7.3
Hardness HRC	45-60

Available Products and Specifications

Rod, Bar, Wire and Forgings	GB/T17951-2000
Plate, Sheet and Strip	GB/T17951-2000
Pipe and Tube	GB/T17951-2000
Welding Product	–
Others	–

Features

AlNiCo cast permanent magnetic alloy is one of the most important permanent materials with excellent permanent magnetic properties and temperature stability.