Samarium-Cobalt Magnets | Products | Magnet manufacturer

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	Neodymium magnets

	Samarium-cobalt magnets

	Ferrite magnets

	Neodymium plastic magnets

	Al-Ni-Co magnets

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These magnets are characterized by high magnetism, and are also resistant to both rust and high temperature.

These magnets represent the highest magnetic energy product after neodymium magnets. They are also highly corrosion-resistant without being rustproofed and offer excellent temperature characteristics as well. These are rare-earth magnets resistant to high temperature.
Samarium-cobalt magnets
These sintered products consist mainly of samarium (Sm) and cobalt (Co), and are available with two kinds of material: 1-5 series and 2-17 series.
The 1-5 series has high magnetic coercive force (Hcj), but is easy to magnetize and adjust magnetism. Magnets of this series also exhibit relatively stable performance under changing temperature.
The 2-17 series has high magnetism and offers excellent temperature stability in magnetic characteristics as well. Samarium-cobalt magnets are relatively low in mechanical strength. Caution should therefore be exercised in handling these magnets to prevent chipping and cracking.

Characteristics of magnets | Characteristic data | Characteristic distribution
Demagnetization curve | Physical characteristics of magnet | Manufacturing process


	Residual flux density (Br)	Magnetic coercive force		(BH) max
	Residual flux density (Br)	(Hcb)	(Hcj)	(BH) max

Material name	kG/T	kOe/kA/m	kOe/kA/m	MGOe/kj/m3

SF20 1-5 series	≥9.0 ≥0.90	≥8.5 ≥676	≥15 ≥1194	19 - 21 150- 167

SF24 2-17 series	≥9.5 ≥0.95	≥8.7 ≥692	≥18 ≥1433	22- 24 175- 191

SF26 2-17 series	≥10.2 ≥1.02	≥9.4 ≥748	≥18 ≥1433	24- 26 191- 215

SF28 2-17 series	≥10.3 ≥1.03	≥9.5 ≥756	≥18 ≥1433	26- 28 205- 220

SF30 2-17 series	≥10.8 ≥1.08	≥9.9 ≥788	≥18 ≥1433	28- 30 220- 240

Characteristics of magnets | Characteristic data | Characteristic distribution
Demagnetization curve | Physical characteristics of magnet | Manufacturing process


		Temp. coefficient		Density	Curie Temp.	Vickers hardness	Working Temp.

		(20°C - Tw)		(D)	(Tc)	(HV)	Tw

		αBr	αH
Series name	Product name	-%/°C	-%/°C	g/cm3	°C		°C

Sm1Co5 series	SF20	0.05	0.3	8.3	750	450 - 500	250

Sm2Co17 series	SF24	0.025	0.2	8.4	800	550 - 600	300

	SF26	0.03	0.2	8.4	800	550 - 600	300

	SF28	0.035	0.2	8.4	800	550 - 600	300

	SF30	0.035	0.2	8.4	800	550 - 600	300

Characteristics of magnets | Characteristic data | Characteristic distribution
Demagnetization curve | Physical characteristics of magnet | Manufacturing process

1.	Mix the ingredients.
2.	Dissolve the mixture at high temperature and prepare an alloy.
3.	Turn the alloy into fine powder.
4.	When pressing the fine powder, apply a magnetic field to it and prepare a molded product of powder with aligned directions of magnetization.
5.	Sinter the product at about 1,200°C, and then subject it to heat treatment at about 1,000°C in order to increase its magnetic characteristics.
6.	Process the manufactured magnet base material and finish it into the product shape.
7.	Apply a magnetic field to give the magnet magnetism.

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