Injection Molded Magnets

Injection molded magnets, often referred to as molded composite magnets, represent a class of advanced materials formed by blending thermoplastic resin with magnetic powder. This unique amalgamation is meticulously processed under pressure, allowing it to flow into a precisely designed mold cavity. Within this cavity, the material takes on its final form, undergoes orientation, experiences a controlled cooling process, and ultimately solidifies into the desired shape. The injection molding process is capable of producing an array of intricate shapes, including thin-walled rings, rods, and complex custom geometries. Additionally, these magnets can be readily combined with other metal components to create versatile assemblies.

Injection molded magnets leverage a range of magnetic powders, including neodymium iron boron (NdFeB), samarium cobalt (SmCo), and ferrite, in conjunction with thermoplastic resins such as PA6, PA12, and PPS.

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Physical Properties

Magnet Type	Grade	Br		Hcb		Hcj		(BH)_max		TW	Tensile streng	270°Cx5kg Mell Flow Rate	Density	Molding shrikage Coefficient	Urec	αBr
mT	(kGs)	kA/m	kOe	kA/m	kOe	kJ/m³	MGOe	°C	Mpa	G/10 min	g/cm³	%	-	%/°C
-	-	-	-	-	-	-	-	-	-	ASTMD-638	ASTMD-638	ASTMD-792	DIC Method	-
Injection Ferrite Magnets	Ferrite Powder +Binder Nylon6
	*IMF0606	185	-	127	-	231	-	6.4	-	≤140	-	-	-	-	-	-
	*IMF0606	220	-	171	-	278	-	9.6	-	≤140	50	200	3.05	0.6	-	-
	*IMF0606	250	-	191	-	223	-	12.4	-	≤140	60	120	3.4	0.6	-	-
	*IMF0606	260	-	195	-	255	-	13.6	-	≤140	50	100	3.45	0.6	-	-
	*IMF0606	275	-	199	-	247	-	14.4	-	≤140	55	130	3.5	0.6	-	-
	*IMF0606	280	-	203	-	238	-	15.6	-	≤140	54	130	3.6	0.5	-	-
	*IMF0606	290	-	207	-	250	-	16.8	-	≤140	60	110	3.65	0.5	-	-
	*IMF0606	295	-	211	-	263	-	17.6	-	≤140	50	100	3.7	0.4	-	-
	Ferrite Powder +Binder Nylon12
	IMF0212	115	-	79	-	203	-	2.4	-	≤120	40	200	2.9	0.7	-	-
	IMF1212	265	-	199	-	250	-	12.8	-	≤120	50	50	3.45	0.5	-	-
	IMF1512	280	-	195	-	250	-	15.2	-	≤120	40	-	3.6	0.5	-	-
	IMF1612	290	-	199	-	247	-	16.8	-	≤120	40	-	3.65	0.5	-	-
Hybrid magnet	Hybrid Power +Binder Nylon/PPS
	IMH13PPS	260	-	179	-	227	-	13.2	-	≤180(PPS)	40	40	3.55	0.4	-	-
	IMH34PPS	450	-	302	-	915	-	33.6	-	≤180(PPS)	-	-	4.65	-	-	-
Injection NdFeB Magnets	Injection NdFeB Magnets
	IMN-2	200-400	2.0-4.0	120-240	1.5-3.0	560-720	7.0-9.0	6.4-24	0.8-3.0	≤120	-	-	3.5-4.0	-	1.25	-0.15
	IMN-4	400-490	4.0-4.9	247-310	3.1-3.9	573-732	7.2-9.2	28-36	3.5-4.5	≤120	-	-	4.0-5.0	-	1.2	-0.1
	IMN-6	490-570	4.9-5.7	312-382	3.9-4.8	637-796	8.0-10.0	42-56	5.2-7.0	≤120	-	-	5.0-5.5	-	1.2	-0.1
	IMN-8	570-630	5.7-6.3	382-430	4.8-5.4	676-835	8.5-10.5	59-67	7.4-8.4	≤120	-	-	5.0-5.5	-	1.2	-0.1
	IMN-6H	480-560	4.8-5.6	334-398	4.2-5.0	1035-1353	13.0-17.0	40-52	5.0-6.5	≤120	-	-	5.0-5.5	-	1.13	-0.15
Injection SmCo Magnets	Injection SmCo Magnets
	SMB-6(1:5)	400	4	280	3.5	800	10	30~50	4~6	≤120	-	-	-	-	-	-
	SMB-10(1:5)	500	5	320	5	800	10	50~65	6~8	≤120	-	-	-	-	-	-
	SMB-10(2:17)	600	6	360	4.5	800	10	65~80	8~10	≤120	-	-	-	-	-	-
	SMB-12(2:17)	700	7	400	5	800	10	80~95	10~12	≤120	-	-	-	-	-	-

Remark：*---Isotropic,others are anisotropic.

Application

The distinctive characteristics of injection molded magnet products set them apart in numerous ways. They exhibit a flawless, visually appealing surface finish and boast exceptionally high dimensional accuracy, eliminating the need for subsequent secondary processing. Their capacity for intricate shaping extends to micro-sized geometries, offering a new dimension of design freedom. Furthermore, these magnets deliver consistent performance stability, effectively withstand vibrations, and possess impressive resistance to mechanical shock.

These attributes collectively position injection molded magnets as indispensable components in precision motion and sensing applications. Their versatility, combined with their reliability and performance advantages, has led to widespread adoption in these demanding engineering domains.