SmCo Disc Magnets

Product Introduction

Types & Sizes: Samarium Cobalt Disc Magnets (SmCo5 / Sm2Co17) Diameter Range: 1 mm – 120 mm Common Sizes: D10×2, D2×2, D3×1.2, D80×30 Magnetization: Axial or Diametrical Tolerances: Standard machining tolerances applied (e.g., ±0.03–0.1 mm)

Coatings: Uncoated or Nickel (Ni) Coating Naturally corrosion-resistant

Applications: High-temperature environments, precision instruments, aerospace, motors, magnetic couplings, and sensors Excellent thermal stability (up to 350°C), corrosion resistance, and demagnetization resistance

Features: High energy product (BH)max: 20–32 MGOe Superior to ferrite and AlNiCo in performance Brittle and must be handled with care

Description

Reviews

As a leading SmCo Magnets manufacturer in China, MAG SPRING offers high-quality Samarium Cobalt (SmCo) Disc Magnets, available in various dimensions and grades, tailored to meet diverse application needs. These magnets provide excellent thermal stability, corrosion resistance, and magnetic performance, with options for axial or diametric magnetization and reliable coatings for enhanced durability.

SmCo Magnets manufacturer

Material: Samarium Cobalt (SmCo5 or Sm2Co17)
Magnetization: Axial or Diametric
Coating: Uncoated or Nickel (Ni) anti-corrosion coating
(BH)max Range: 20 to 32 MGOe
Dimensions:

Available sizes include D10x2, D2x2, D3x1.2, D1.5x1.5, D80x30, and more
Maximum diameter: 120mm
Minimum diameter: 1mm
MOQ: 1 piece
Lead Time: 7 to 30 days, depending on order quantity

Standard Tolerance for SmCo Disc Magnets:

Dimension Range (mm)	Cylindricity (mm)	Tolerance (mm)	Parallelism (mm)
1 ≤ D ≤ 5	0.03	0.03	0.04
5 < D ≤ 25	0.05	0.05	0.05
25 < D ≤ 50	0.05	0.05	0.05
D > 50	0.05	0.1	0.1

Features:

Material Properties: SmCo5 magnets are brittle and hard, prone to chipping or breaking if dropped or stuck together.
Magnetic Performance: Higher magnetic properties compared to AlNiCo and Ferrite magnets.
Thermal Stability: Maximum working temperature up to 350°C, superior to Ferrite and Neodymium magnets.
Corrosion Resistance: Better resistance to corrosion compared to Neodymium magnets.
Demagnetization Resistance: Superior resistance to demagnetization compared to Ferrite and Neodymium magnets.

Applications:

Widely used in motors, sensors, magnetic assemblies, electronics, and other high-performance industrial and consumer applications requiring high thermal stability and corrosion resistance.

Production and Delivery:

Packaging: Standard packaging for air or sea shipment, customizable based on customer requirements.
Note: Special handling recommended due to the brittle nature of SmCo magnets.

Quality and Compliance:

Manufactured under strict quality controls, fully RoHS compliant.

Magnetic Properties of SmCo Disc Magnets

Material	Grade	B_r		H_cb		H_cj		(BH)_max		T_c	T_w	B_r	£ H_cj)
Material	Grade	T	KGs	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe			%/	%/
SmCO5 magnet and Sm₂Co_{17 magnet}	XGS16L	0.81-0.85	8.1-8.5	517-669	6.5-8.4	636-955	8--12	111-127	14-16	800	250	0.020	0.20
	XGS18L	0.85-0.90	8.5-9.0	525-708	6.6-8.9	636-955	8--12	127-143	16-18	800	250	0.020	0.20
	XGS20L	0.90-0.94	9.0-9.4	533-732	6.7-9.2	636-955	8--12	143-159	18-20	800	250	0.020	0.20
	XGS22L	0.94-0.97	9.4-9.7	533-740	6.7-9.3	636-955	8--12	159-175	20-22	800	250	0.020	0.20
	XGS24L	0.97-1.02	9.7-10.2	541-756	6.8-9.5	636-955	8--12	175-191	22-24	800	250	0.030	0.20
	XGS26L	1.02-1.05	10.2-10.5	541-764	6.8-9.6	636-955	8--12	191-207	24-26	800	250	0.030	0.20
	XGS28L	1.05-1.08	10.5-10.8	541-780	6.8-9.8	636-955	8--12	207-223	26-28	800	250	0.035	0.20
	XGS30L	1.08-1.11	10.8-11.1	541-796	6.8-10.0	636-955	8--12	223-239	28-30	800	250	0.035	0.20
	XGS32L-A	1.11-1.13	11.1-11.3	549-804	6.9-10.1	636-955	8--12	239-246	30-31	800	250	0.035	0.22
	XGS32L-B	1.13-1.15	11.3-11.5	550-805	6.9-10.1	636-955	8--12	246-255	31-32	800	250	0.040	0.25
	XGS33L	1.15-1.17	11.5-11.7	558-815	7.0-10.2	636-955	8--12	246-262	31-33	800	250	0.045	0.25
	XGS16M	0.81-0.85	8.1-8.5	573-669	7.2-8.4	955-1433	12--18	111-127	14-16	800	300	0.020	0.20
	XGS18M	0.85-0.90	8.5-9.0	605-708	7.6-8.9	955-1433	12--18	127-143	16-18	800	300	0.020	0.20
	XGS20M	0.90-0.94	9.0-9.4	637-732	8.0-9.2	955-1433	12--18	143-159	18-20	800	300	0.020	0.20
	XGS22M	0.94-0.97	9.4-9.7	645-740	8.1-9.3	955-1433	12--18	159-175	20-22	800	300	0.020	0.20
	XGS24M	0.97-1.02	9.7-10.2	661-764	8.3-9.6	955-1433	12--18	175-191	22-24	800	300	0.030	0.20
	XGS26M	1.02-1.05	10.2-10.5	685-788	8.6-9.9	955-1433	12--18	191-207	24-26	800	300	0.030	0.20
	XGS28M	1.05-1.08	10.5-10.8	693-812	8.7-10.2	955-1433	12--18	207-223	26-28	800	300	0.035	0.20
	XGS30M	1.08-1.11	10.8-11.1	700-828	8.8-10.4	955-1433	12--18	223-239	28-30	800	300	0.035	0.20
	XGS32M-A	1.11-1.13	11.1-11.3	708-852	8.9-10.7	955-1433	12--18	239-246	30-31	800	300	0.035	0.22
	XGS32M-B	1.13-1.15	11.3-11.5	716-860	9.0-10.8	955-1433	12--18	246-255	31-32	800	300	0.040	0.25
	XGS33M	1.15-1.17	11.5-11.7	726-870	9.1-10.9	955-1433	12--18	246-262	31-33	800	300	0.045	0.25
	XGS14	0.74-0.81	7.4-8.1	540-609	7.0-7.9	1433	18	96--111	12--14	800	300	0.020	0.20
	XGS16	0.81-0.85	8.1-8.5	597-669	7.5-8.4	1433	18	111-127	14-16	800	300	0.020	0.20
	XGS18	0.85-0.90	8.5-9.0	621-708	7.8-8.9	1433	18	127-143	16-18	800	300	0.020	0.20
	XGS20	0.90-0.94	9.0-9.4	653-732	8.2-9.2	1433	18	143-159	18-20	800	300	0.020	0.20
	XGS22	0.94-0.97	9.4-9.7	677-740	8.5-9.3	1433	18	159-175	20-22	800	300	0.020	0.20
	XGS24	0.97-1.02	9.7-10.2	693-772	8.7-9.7	1433	18	175-191	22-24	800	300	0.030	0.20
	XGS26	1.02-1.05	10.2-10.5	748-796	9.4-10.0	1433	18	191-207	24-26	800	300	0.030	0.20
	XGS28	1.05-1.08	10.5-10.8	756-820	9.5-10.3	1433	18	207-223	26-28	800	300	0.035	0.20
	XGS30	1.08-1.11	10.8-11.1	788-836	9.9-10.5	1433	18	223-239	28-30	800	300	0.035	0.20
	XGS32-A	1.11-1.13	11.1-11.3	812-860	10.2-10.8	1433	18	239-246	30-31	800	300	0.035	0.22
	XGS32-B	1.13-1.15	11.3-11.5	820-870	10.3-10.9	1433	18	246-255	31-32	800	300	0.040	0.25
	XGS33	1.15-1.17	11.5-11.7	830-880	10.4-11.0	1433	18	246-262	31-33	800	300	0.045	0.25
	XGS14H	0.74-0.81	7.4-8.1	557-629	7.0-7.9	1990	25	96--111	12--14	800	350	0.020	0.20
	XGS16H	0.81-0.85	8.1-8.5	605-669	7.6-8.4	1990	25	111-127	14-16	800	350	0.020	0.20
	XGS18H	0.85-0.90	8.5-9.0	629-708	7.9-8.9	1990	25	127-143	16-18	800	350	0.020	0.20
	XGS20H	0.90-0.94	9.0-9.4	661-732	8.3-9.2	1990	25	143-159	18-20	800	350	0.020	0.20
	XGS22H	0.94-0.97	9.4-9.7	685-740	8.6-9.3	1990	25	159-175	20-22	800	350	0.020	0.20
	XGS24H	0.97-1.02	9.7-10.2	700-772	8.8-9.7	1990	25	175-191	22-24	800	350	0.030	0.20
	XGS26H	1.02-1.05	10.2-10.5	756-796	9.5-10.0	1990	25	191-207	24-26	800	350	0.030	0.20
	XGS28H	1.05-1.08	10.5-10.8	764-820	9.6-10.3	1990	25	207-223	26-28	800	350	0.035	0.20
	XGS30H	1.08-1.11	10.8-11.1	796-836	10.0-10.5	1990	25	223-239	28-30	800	350	0.035	0.20
	XGS32H-A

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