Sintered AlNiCo Magnets

Sintered Alnico magnet is usually restricted to smaller sizes, it has slightly lower magnetic properties, but better mechanical strength than cast alnico magnet. Sintered Alnico magnet is widely used in all kinds of sensors, meters, controller speedometer and other applications.

Attributes of Alnico Magnet ·Very temperature stable, great for high heat
applications
·Working temperature can reach 550-600 C
·Does not lend itself to conventional machining
(hard and brittle)
·High residual induction and energy product
compared to ceramic material
·Low coercive force compared to ceramic and rare
earth materials (more subject to demagnetization)

Magnetic properties and physical characteristics
of sintered AINiCo permanent magnets

Grade	(BH)max KJ/m3	Br mT	Hcb kA/m	Hcj kA/m	d g/cm3	α(Br) %/K	Tc ℃	Remarks
ALNiCo4/1	3.2-4.8	870-890	9-11	10-12	6.8	-0.02	750	isotropy
ALNiCo8/5	8.5-9.5	530-620	45-50	47-52	6.8	-0.02	750
ALNiCo10/5	9.5-11	630-700	48-56	50-58	6.8	-0.02	780
ALNiCo12/5	11-13	700-750	50-56	53-58	7.0	-0.02	800
ALNiCo14/5	13-15	730-800	47-50	50-53	7.1	-0.02	790
ALNiCo14/6	14-16	620-810	56-64	58-66	7.1	-0.02	790
ALNiCo14/8	14-16	550-610	75-88	80-92	7.1	-0.01	850
ALNiCo18/10	16-19	570-620	92-100	99-107	7.2	-0.01	860
ALNiCo35/5	35-39	1100-1200	48-52	50-54	7.20	-0.02	850	Anisotropy
ALNiCo29/6	29-33	970-1090	58-64	60-66	7.20	-0.02	860
ALNiCo32/10	33-38	770-870	90-104	94-109	7.20	-0.01	860
ALNiCo33/11	33-38	700-800	107-115	111-119	7.20	-0.01	860
ALNiCo39/12	39-43	830-900	115-123	119-127	7.25	-0.01	860
ALNiCo44/12	44-48	900-950	119-127	124-132	7.25	-0.01	860
ALNiCo37/15	37-41	700-800	143-151	150-158	7.10	-0.1	870