SmCo_Ningbo Permanent Magnetics Co., Ltd.

SmCo Magnetic Properties

NO.	Unit	SI Unit				CGS Unit				Maximum Working Temperature °C
	Unit	Br T	Hcb kA/m	Hcj kA/m	(BH)max kJ/m³	Br KGS	Hcb kOe	Hcj kOe	(BH)max MGOe	Maximum Working Temperature °C
	Grade	min - max	min	min	min - max	min - max	min	min	min - max	(L/D=0.7) Typ
	SmCo₅	YX-16	0.81-0.85	620-660	1194-1830	110-127	8.1-8.5	7.8-8.3	15-23	14-16	250
YX-18		0.85-0.90	660-700	1194-1830	127-143	8.5-9.0	8.3-8.8	15-23	16-18	250
YX-20		0.90-0.94	676-725	1194-1830	150-167	9.0-9.4	8.5-9.1	15-23	19-21	250
YX-22		0.92-0.96	710-748	1194-1830	167-175	9.2-9.6	8.9-9.4	15-23	20-22	250
YX-24		0.96-1.00	730-770	1194-1830	175-190	9.6-10.0	9.2-9.7	15-23	22-24	250
YX-16s		0.79-0.84	620-660	≥1830	118-135	7.9-8.4	7.8-8.3	≥23	15-17	250
YX-18s		0.84-0.89	660-700	≥1830	135-151	8.4-8.9	8.3-8.8	≥23	17-19	250
YX-20s		0.89-0.93	684-732	≥1830	150-167	8.9-9.3	8.6-9.2	≥23	19-21	250
YX-22s		0.92-0.96	710-756	≥1830	167-183	9.2-9.6	8.9-9.5	≥23	21-23	250
YX-24s		0.96-1.00	740-788	≥1830	183-199	9.6-10.0	9.3-9.9	≥23	23-25	250
Sm₂Co₁₇	YXG-24H	0.95-1.02	692-764	≥1990	175-191	9.5-10.2	8.7-9.6	≥25	22-24	350
	YXG-26H	1.02-1.05	748-796	≥1990	191-207	10.2-10.5	9.4-10.0	≥25	24-26	350
	YXG-28H	1.03-1.08	756-812	≥1990	207-223	10.3-10.8	9.5-10.2	≥25	26-28	350
	YXG-30H	1.08-1.10	788-835	≥1990	223-239	10.8-11.0	9.9-10.5	≥25	28-30	350
	YXG-32H	1.10-1.13	812-860	≥1990	231-255	11.0-11.3	10.2-10.8	≥25	29-32	350
	YXG-33H	1.12-1.16	845-890	≥1990	239-263	11.2-11.6	10.6-11.2	≥25	30-33	350
	YXG-22	0.93-0.97	676-740	≥1433	160-183	9.3-9.7	8.5-9.3	≥18	20-23	300
	YXG-24	0.95-1.02	692-764	≥1433	175-191	9.5-10.2	8.7-9.6	≥18	22-24	300
	YXG-26	1.02-1.05	748-796	≥1433	191-207	10.2-10.5	9.4-10.0	≥18	24-26	300
	YXG-28	1.03-1.08	756-812	≥1433	207-223	10.3-10.8	9.5-10.2	≥18	26-28	300
	YXG-30	1.08-1.10	788-835	≥1433	223-239	10.8-11.0	9.9-10.5	≥18	28-30	300
	YXG-32	1.10-1.13	812-860	≥1433	231-255	11.0-11.3	10.2-10.8	≥18	29-32	300
	YXG-33	1.12-1.16	845-890	≥1433	239-263	11.2-11.6	10.6-11.2	≥18	30-33	300
	YXG-35	1.16-1.2	868-908	≥1433	255-278	11.6-12.0	10.9-11.4	≥18	32-35	300
	YXG-26M	1.02-1.05	676-780	955-1433	199-215	10.2-10.5	8.5-9.8	12-18	25-27	300
	YXG-28M	1.03-1.08	676-796	955-1433	207-220	10.3-10.8	8.5-10.0	12-18	26-28	300
	YXG-30M	1.08-1.10	676-835	955-1433	220-240	10.8-11.0	8.5-10.5	12-18	28-30	300
	YXG-32M	1.10-1.13	676-852	955-1433	230-255	11.0-11.3	8.5-10.7	12-18	29-32	300
	YXG-24L	0.95-1.02	541-716	636-955	183-199	9.5-10.2	6.8-9.0	8-12	23-25	250
	YXG-26L	1.02-1.05	541-748	636-955	199-215	10.2-10.5	6.8-9.4	8-12	25-27	250
	YXG-28L	1.03-1.08	541-764	636-955	207-220	10.3-10.8	6.8-9.6	8-12	26-28	250
	YXG-30L	1.08-1.15	541-796	636-955	220-240	10.8-11.5	6.8-10.0	8-12	28-30	250
	YXG-32L	1.10-1.15	541-812	636-955	230-255	11.0-11.5	6.8-10.2	8-12	29-32	250

Note: Maximum working temperature may vary depending on magnet geometry, dimensions, magnetic circuit and operating conditions.

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SmCo Physical Properties

	Unit	SmCo₅	Sm₂Co₁₇
Vickers Hardness	Hv	450-500	550-600
Electrical Resistivity	Ω·cm	5 ~ 6 x10⁻⁵	8 ~ 9 x10⁻⁵
Density	g/cm³	8.3	8.4
Coefficient of Thermal Expansion ┴	/°C	12 x10⁻⁶	11 x10⁻⁶
Coefficient of Thermal Expansion //	/°C	6×10⁻⁶	8×10⁻⁶
Bending Strength	MPa	1000	800
Flexural Strength	MPa	150-180	130-150
Tensile Strength	MPa	40	35

Note: The values listed above are typical physical characteristics and are for reference only.

SmCo Magnets

SmCo Magnetic Properties

SmCo Physical Properties