High-Performance Wet-Pressed Ferrite Magnets - Permanent Ferrite-Product-Anhui Sinomag Technology Co., Ltd.-安徽龙磁科技股份有限公司

Magnetic materials are fundamental functional materials in the electronics industry. As a vital segment of magnetic materials, permanent ferrite magnets play a crucial role across a broad range of industries, including automotive, electronics, information technology, motorcycles, power tools and other industrial applications.

Permanent Ferrite Magnet Product Sizes & Tolerances

Product	Size	Before Grinding	After Grinding
Wet Press Segment Magnet	R	R（-0.5 ~ +1）mm	± 0.1mm
	r	r（-0.5 ~ +1）mm	± 0.1mm
	L	L ± 2%	± 0.2mm
	W	W ± 0.2%	± 0.2mm
	T	T（-0.5 ~ +1）mm	± 0.1mm
	H	H（-0.5 ~ +1）mm	± 0.2mm
Wet Press Block Magnet	长度L	L ± 2%	± 0.2mm
	W	W ± 0.2%	± 0.2mm
	T	T ± 1.0mm	± 0.1mm

Permanent Ferrite Material Grades

Grade	Mlagnetic Properties
	Remanence		Coercivity		Intrinsic Coercivity		Max. Energy (BH)
	Br（MT）	Br（GS）	Hcb（KA/m）	Hcb（Oe）	Hcj（KA/m）	Hcj（Oe）	（BH）max（KJ/m³）	（BH）max（MGOe）
SM4H	360-380	3600-3800	255-278	3200-3500	318-342	4000-4300	25.5-27.9	3.2-3.5
SM4E	340-360	3400-3600	255-278	3200-3500	358-382	4500-4800	22.3-24.7	2.8-3.1
SM5N	400-420	4000-4200	246-270	3100-3400	263-286	3300-3600	31.0-33.4	3.9-4.2
SM5B	390-410	3900-4100	255-278	3200-3500	270-294	3400-3700	30.2-32.6	3.8-4.1
SM6N	410-430	4100-4300	250-274	3150-3450	258-282	3250-3550	32.6-35.0	4.1-4.4
SM6B	400-420	4000-4200	270-294	3400-3700	295-318	3700-4000	31.8-34.2	4.0-4.3
SM6H	390-410	3900-4100	286-310	3600-3900	310-334	3900-4200	30.2-32.6	3.8-4.1
SM7N	420-440	4200-4400	246-270	3100-3400	251-275	3150-3450	34.2-37.4	4.3-4.7
SM7B	410-430	4100-4300	290-313	3650-3950	306-330	3850-4150	31.8-35.0	4.1-4.4
SM7H	390-410	3900-4100	290-314	3650-3950	346-370	4350-4650	29.6-32.6	3.7-4.1
SM10N	430-450	4300-4500	270-294	3400-3700	275-299	3450-3750	35.0-38.1	4.4-4.8
SM10B	420-440	4200-4400	302-342	3800-4300	342-366	4300-4600	33.4-36.6	4.2-4.6
SM10H	410-430	4100-4300	294-334	3700-4200	380-406	4800-5100	31.8-35.0	4.1-4.4
SM13N	450-470	4500-4700	278-302	3500-3800	298-322	3750-4050	38.1-41.4	4.8-5.2
SM13B	440-460	4400-4600	302-342	3800-4300	342-366	4300-4600	35.0-38.1	4.4-4.8
SM13H	430-450	4300-4500	302-342	3800-4300	380-406	4800-5100	33.4-36.6	4.2-4.6

Permanent Ferrite Magnet Physical Characteristics

Curie Temperature	℃	450
Max Operating Temperature	℃	250
Hardness	Hv	>530
Density	g/cm³	4.8-5.1
Relative Recoil Permeability	μrec	1.05-1.1
Temperature Coefficient of Br	%/℃	-0.18
Temperature Coefficient of iHc	%/℃	0.11-0.40
Anti-BendingStrength	N/m²	(0.5-0.9)x10⁸
Anti-CompressiveStrength	N/m²	≥6.9x10⁸
Anti-TensileStrength	N/m²	(0.2-0.5)x10⁸
Specific Heat	J/kg.K	600-900
Resistivity	Q.cm	>10⁴