Sintered Samarium Cobalt Magnet

Samarium-cobalt magnets are mainly made of metal samarium, cobalt and other metal materials in different proportions, after high-temperature smelting, powder making, pressing, and sintering processes, to make blanks of various grades,then select the blanks with the properties required by customers and machined into the desired shape. After inspection, magnetization, packaging and then delivery to customers.

How to choose SmCo5 magnet and Sm2Co17 magnets

The maximum energy product [BH(max)] range of SmCo5 magnet is between 16 MGOe ~ 25 MGOe, and the maximum working temperature is 250°C. Although, the maximum energy product [BH(max)] of SmCo5 magnet is lower than that of Sm2Co17 magnet, but the mechanical properties and ductility are better than Sm2Co17 magnet, and it is easier to machine. The SmCo5 magnet is not as brittle as Sm2CO17 magnet when used, so SmCo5 magnets are suitable for processing into shapes and specifications that Sm2Co17 magnets are not easy to process. For example, disc, block, ring magnets with extremely thin thickness or walls and various complex irregularl shape magnets.

The maximum energy product [BH(max)] range of Sm2CO17 is between 20 MGOe ~ 35 MGOe, and the maximum working temperature is 350°C. Because Sm2Co17 has a lower temperature coefficient and better corrosion resistance, its magnetic performance exceeds that of NdFeB magnets at high temperatures, so it is widely used in aerospace, military fields, high-temperature motors, automotive sensors, and various magnetic drives, magnetic pumps and microwave devices and other fields.

Typical product specification of sintered samarium cobalt magnet

Blocks & Bars		Segment or Arc
L	1-200mm	W	3-100mm
W	0.5-100mm	H	1-100mm
H	0.3-120mm	L	1-120mm

Discs & Rods

Axial Magneitzed

Discs $ Rods

Diametrical Magnetized

1-130mm

1-120mm

0.3-100mm

Ring & Hollow Cylinder Axial Magnetized		Rring & Hollow Cylinder Diametrical Magnetized
D	1.2-120mm	D	1.2-120mm
d	0.3-90mm	d	0.3-80mm
T	0.3-60mm	T	0.3-130mm

Fen - Shaped		Bread- Shaped
W	3-100mm	W	3-100mm
H	1.5-100mm	H	1-100mm
L	1-100mm	L	1-100mm

Technological Advantages:
1. The largest block size can reach 130mm×130mm×100mm, and can achieve full saturation magnetization.
2. Produce planar multi-pole samarium cobalt magnets, and the magnetization thickness generally cannot exceed 6mm.
3. Produce SmCo magnets with magnetization deviation within 1° (for magnetizing products).
4. Produce a variety of complex shapes and multi-angle magnetized samarium-cobalt magnet components, such as halbeck array, magnetron, magnetic assembly for plasma source.

Properties of sintered samarium cobalt magnet

Grade		Remanence (Br)		Coercive Force (Hcb)		Intrinsic Coercivity (Hcj)		Maximum Energy Product (BH)max		Max Working Temp. (Tw)	Remanence Temp Coefficient α(Br)	Intrinsic Coercivity Temp Coefficient α(Hcj)
Grade		T	KGS	KA/m	kOe	KA/m	kOe	kJ/m³	MGOe	℃	%/°C	%/°C

SmCo5	YX16	0.81-0.85	8.1-8.5	610-660	7.8-8.3	1194-1830	15-23	111-127	14-16	250	-0.05	-0.3
	YX18	0.85-0.90	8.5-9.0	650-700	8.3-8.8	1194-1830	15-23	127-143	16-18	250	-0.05	-0.3
	YX20	0.90-0.94	9.0-9.4	680-725	8.5-9.1	1194-1830	15-23	143-159	18-20	250	-0.05	-0.3
	YX22	0.94-0.96	9.4-9.6	710-750	8.9-9.4	1194-1830	15-23	159-175	20-22	250	-0.05	-0.3
	YX24	0.96-1.00	9.6-10.0	720-770	9.2-9.7	1194-1830	15-23	175-190	22-24	250	-0.05	-0.3
	YX16S	0.79-0.84	7.9-8.4	612-660	7.7-8.3	≥1830	≥23	118-135	15-17	250	-0.035	-0.28
	YX18S	0.84-0.90	8.4-9.0	644-692	8.1-8.7	≥1830	≥23	135-151	17-19	250	-0.04	-0.28
	YX20S	0.90-0.94	9.0-9.4	684-732	8.6-9.2	≥1830	≥23	151-167	19-21	250	-0.045	-0.28
	YX22S	0.92-0.96	9.2-9.6	710-756	8.9-9.5	≥1830	≥23	167-183	21-23	250	-0.045	-0.28
	YX24S	0.96-1.00	9.6-10.0	740-788	9.3-9.9	≥1830	≥23	183-199	23-25	250	-0.045	-0.28

Sm2Co17	YXG22H	0.93-0.97	9.3-9.7	676-740	8.5-9.3	≥1990	≥25	160-175	20-22	300	-0.02	-0.2
	YXG24H	0.95-1.02	9.5-10.2	700-750	8.7-9.4	≥1990	≥25	175-191	22-24	350	-0.025	-0.2
	YXG26H	1.02-1.05	10.2-10.5	750-780	9.4-9.8	≥1990	≥25	191-207	24-26	350	-0.03	-0.2
	YXG28H	1.05-1.08	10.5-10.8	756-796	9.5-10	≥1990	≥25	207-220	26-28	350	-0.035	-0.2
	YXG30H	1.08-1.10	10.8-11.0	788-835	9.9-10.5	≥1990	≥25	220-240	28-30	350	-0.035	-0.2
	YXG32H	1.10-1.13	11.0-11.3	812-860	10.2-10.8	≥1990	≥25	230-255	29-32	350	-0.035	-0.2
	YXG22	0.93-0.97	9.3-9.7	676-740	8.5-9.3	≥1443	≥18	160-175	20-22	300	-0.02	-0.2
	YXG24	0.95-1.02	9.5-1.02	692-764	8.7-9.6	≥1443	≥18	175-191	22-24	300	-0.025	-0.2
	YXG26	1.02-1.05	10.2-10.5	748-796	9.4-10.0	≥1443	≥18	191-207	24-26	300	-0.03	-0.2
	YXG28	1.05-1.08	10.5-10.8	756-812	9.5-10.2	≥1443	≥18	207-220	26-28	300	-0.035	-0.2
	YXG30	1.08-1.10	10.8-11.0	788-835	9.9-10.5	≥1443	≥18	220-240	28-30	300	-0.035	-0.2
	YXG32	1.10-1.13	11.0-11.3	812-860	10.2-10.8	≥1443	≥18	230-255	29-32	300	-0.035	-0.2
	YXG26M	1.02-1.05	10.2-10.5	676-780	8.5-9.8	955-1433	12-18	191-207	24-26	300	-0.035	-0.2
	YXG28M	1.05-1.08	10.5-10.8	676-796	8.5-10.0	955-1433	12-18	207-220	26-28	300	-0.035	-0.2
	YXG30M	1.08-1.10	10.8-11.0	676-835	8.5-10.5	955-1433	12-18	220-240	28-30	300	-0.035	-0.2
	YXG28L	1.05-1.08	10.5-10.8	541-764	6.8-9.6	636-955	8-12	207-220	26-28	250	-0.035	-0.2
	YXG30L	1.08-1.15	10.8-11.5	541-796	6.8-10.0	636-955	8-12	220-240	28-30	250	-0.035	-0.2
	YXG32L	1.10-1.15	11.0-11.5	541-812	6.8-10.2	636-955	8-12	230-255	29-32	250	-0.035	-0.2

Download PDF file of properties of sintered samarium cobalt magnet

Technological Advantages:
1. Customize ultra-low temperature coefficient Sm2Co17 magnets. Under the condition of RT-100°C, the temperature coefficient of Br is -0.001%/°C.
2. Customize high temperature resistant Sm2Co17 magnets, the maximum working temperature can reach 400°C, 450°C, 500°C.
3. Customize ultra-high energy Sm2CO17 magnets, Br up to 11.6-12kGs and (BH)max up to 32-35MGOe.

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Sintered Samarium Cobalt Magnet