AA International, Inc--Permanet Magnets, magnets, Neodymium, permanent, ceramic, rare earth, flexible

Product Introduction

AlNiCo alloys basically consist of aluminum, nickel, cobalt, copper, iron and titanium. In some grades cobalt and/or titanium can be omitted. Also these alloys may contain additions of silicon, columbium, zirconium or other elements which enhance heat treatment response of one of the magnetic characteristics. AlNiCo alloys are formed by casting or powder metallurgical processes.

Characteristics

AlNiCo magnets are very good at temperature properties. Its temperature coefficient is very low, so the change of magnetic properties is low under high temperature. The maximum working temperature can be as high as 400 °C
The coercive force of AlNiCo magnets is also very low, so it can be easily effected by reverse magnetic force and impact of iron. This means that they can be easily demagnetized by external influences. For this reason, AlNiCo magnets should not be stored and packed with the same poles opposing to each other.
In open circuit, the ration of length/diameter (L/D) should be at least 4:1. With shorter length, AlNiCo magnets are unstable in open circuit.
AlNiCo magnets have good corrosion resistance characteristic. No coating is needed for surface protection.

Applications

Instruments
Meters
Mobile Phones
Odometers

Magnetic Property for Cast Alnico Magnet

Grade	B_r KGs (mT)	H_cj Oe (KA/m)	BH_max MGOe(KJ/m³)	D g/cm³	MMPA Class	α %/°C Br (H_cj)	T_C °C/°F	T_Max °C/°F
*LN9	6.8(680)	380 (30)	1.13 (9.0)	6.9	Alnico3	-0.03 (-0.02)	810/1490	450/842
*LN10	6.0(600)	500 (40)	1.20 (10.0)	6.9	Alnico3	-0.03 (-0.02)	810/1490	450/842
*LNG12	7.2(720)	500 (45)	1.55 (12.4)	7.0	Alnico2	-0.03 (-0.02)	810/1490	450/842
*LNG13	7.0(700)	600 (48)	1.60 (12.8)	7.0	Alnico2	-0.03 (-0.02)	810/1490	450/842
LNG37	12.0(1200)	600 (48)	4.65 (37.0)	7.3	Alnico5	-0.02 (+0.02)	860/1580	525/977
LNG40	12.5(1250)	600 (48)	5.00 (40.0)	7.3	Alnico5	-0.02 (+0.02)	860/1580	525/977
LNG44	12.5(1250)	650 (52)	5.50 (44.0)	7.3	Alnico5	-0.02 (+0.02)	860/1580	525/977
LNG52	13.0(1300)	700 (56)	6.50 (52.0)	7.3	Alnico5DG	-0.02 (+0.02)	860/1580	525/977
LNG60	13.5(1350)	740 (59)	7.50 (60.0)	7.3	Alnico5-7	-0.02 (+0.02)	860/1580	525/977
LNGT28	10.0(1000)	720 (58)	3.50 (28.0)	7.3	Alnico5	-0.02 (+0.03)	860/1580	525/977
LNGT36J	7.0(700)	1750 (140)	4.50 (36.0)	7.3	Alnico8HC	-0.025(+0.02)	860/1580	550/1022
*LNGT18	5.8(580)	1250 (100)	2.20 (18.0)	7.3	Alnico8	-0.025(+0.02)	860/1580	550/1022
LNGT32	8.0(800)	1250 (100)	4.00 (32.0)	7.3	Alnico8	-0.025(+0.02)	860/1580	550/1022
LNGT40	8.0(800)	1380 (110)	5.00 (40.0)	7.3	Alnico8	-0.025(+0.02)	860/1580	550/1022
LNGT60	9.0(900)	1380 (110)	7.50 (60.0)	7.3	Alnico9	-0.025(+0.02)	860/1580	550/1022
LNGT72	10.5(1050)	1400 (112)	9.00 (72.0)	7.3	Alnico9	-0.025(+0.02)	860/1580	550/1022
* = Isotropic, Others = An-isotropic

Magnetic Property for Sintered Alnico Magnet

Grade	B_r KGs (mT)	H_cj Oe (KA/m)	H_cb Oe (KA/m)	BH_max MGOe(KJ/m³)	D g/cm³	α %/°C	T_C °C/°F
*FLN8	5.2(520)	540 (43)	500 (40)	1.0-1.25 (8-10)	6.8	-0.022	760/1400
*FLNG12	7.0(700)	540 (43)	500 (40)	1.5-1.75 (12-14)	7.0	-0.014	810/1490
*FLNGT14	5.7(570)	980 (78)	950 (76)	1.75-2.0 (14-16)	7.1	-0.020	850/1562
*FLNGT18	5.6(560)	1130 (90)	1100 (88)	2.25-2.75 (18-22)	7.2	-0.020	850/1562
FLNG28	10.5(1050)	590 (47)	580 (46)	3.5-4.15 (28-33)	7.2	-0.016	850/1562
FLNG34	11.0(1100)	640 (51)	630 (50)	4.3-4.8 (34-38)	7.2	-0.016	890/1562
FLNGT28	10.0(1000)	710 (57)	700 (56)	3.5-3.8 28-30)	7.2	-0.020	850/1562
FLNGT31	7.8(780)	1130 (106)	1300 (104)	3.9-4.5 (33-36)	7.2	-0.020	850/1562
FLNG33J	6.5(650)	1880 (150)	1700 (136)	4.15-4.5 (31-36)	7.2	-0.020	850/1562
FLNGT38	8.0(800)	1580 (126)	1550 (123)	4.75-5.3 (38-42)	7.2	-0.020	850/1562
FLNGT42	8.8(880)	1530 (122)	1500 (120)	5.3-6.0 (42-48)	7.25	-0.020	850/1562
* = Isotropic, Others = An-isotropic