Round samarium cobalt magnet

Brand :
NIROKU
Caution
- Due to limited stock and material shortage, the availability of this product may be affected. Please refer to the WOS to confirm current stock status. Apologies on the inconvenience caused.
Product Description
[Features]
· Samacoba magnets are molded sintered products mainly made of samarium and cobalt, second only to neodymium magnets in their magnetic properties.
· Although rust-resistant and resistant to high temperatures, it breaks easily and must be handled with care.
Product Specification

- Samarium cobalt magnets are shaped and sintered products whose main components are samarium and cobalt.
- Excellent magnetic properties second only to neodymium magnets.
Magnetic Properties
| Material Name | Residual magnetic flux density Br | Coercive Force bHc | Coercive Force iHc | Maximum energy product (BH) max |
|---|---|---|---|---|
| T | kA/m | kA/m | kJ/m3 | |
| kg | kOe | kOe | MGOe | |
| 1-5 series YK-20 | ≥ 0.89 | ≥ 637.0 | ≥ 1194.0 | 143.0 to 175.0 |
| 2-17 Series YKK-20 | ≥ 0.85 | ≥ 557.0 | ≥ 716.0 | 143.0 to 175.0 |
| 2-17 Series YKR-22 | ≥ 0.92 | ≥ 620.0 | ≥ 796.0 | 159.0 to 191.0 |
| 2-17 Series YKK-23 | ≥ 0.97 | ≥ 557.0 | ≥ 716.0 | 175.0 to 199.0 |
| 2-17 Series YKG-24 | ≥ 0.95 | ≥ 676.0 | ≥ 1432.0 | 175.0 to 199.0 |
| 2-17 Series YKS-240 | ≥ 0.98 | ≥ 636.0 | ≥ 1432.0 | 175.0 to 207.0 |
| 2-17 Series YKS-26A | ≥ 1.00 | ≥ 676.0 | ≥ 1194.0 | 191.0 to 223.0 |
| 2-17 Series YKG-28 | ≥ 1.02 | ≥ 748.0 | ≥ 1194.0 | 205.0 to 231.0 |
| 2-17 Series YKS-280 | ≥ 1.03 | ≥ 716.0 | ≥ 1432.0 | 207.0 to 239.0 |
| 2-17 Series YKG-30 | ≥ 1.07 | ≥ 733.0 | ≥ 1194.0 | 220.0 to 247.0 |
| 2-17 Series YKK-30 | ≥ 1.09 | ≥ 557.0 | ≥ 716.0 | 215.0 to 247.0 |
| 2-17 Series YKS-300 | ≥ 1.10 | ≥ 438.0 | ≥ 454.0 | 223.0 to 255.0 |
- * The figures are representative values and are not quality guaranteed values.
Physical Properties
| Material Name | Temperature coefficient (Br) | Density | Curie Temperature | Vickers Hardness | Operating temperature※ |
|---|---|---|---|---|---|
| %/°C | g/cm3 | ℃ | HV | ℃ | |
| 1-5 series YK-20 | -0.050 | 8.3 | 750 | 470 | 250 |
| 2-17 Series YKK-20 | -0.030 | 8.2 | 820 | 550 | 250 |
| 2-17 Series YKR-22 | -0.030 | 8.4 | 800 | 550 | 300 |
| 2-17 Series YKK-23 | -0.030 | 8.2 | 820 | 550 | 250 |
| 2-17 Series YKG-24 | -0.030 | 8.4 | 800 | 550 | 300 |
| 2-17 Series YKS-240 | -0.040 | 8.3 | 750 | 550 | 300 |
| 2-17 Series YKS-26A | -0.040 | 8.3 | 750 | 550 | 300 |
| 2-17 Series YKG-28 | -0.030 | 8.4 | 800 | 550 | 300 |
| 2-17 Series YKS-280 | -0.040 | 8.3 | 750 | 550 | 300 |
| 2-17 Series YKG-30 | -0.030 | 8.4 | 800 | 550 | 300 |
| 2-17 Series YKK-30 | -0.030 | 8.2 | 820 | 550 | 250 |
| 2-17 Series YKS-300 | -0.040 | 8.3 | 750 | 550 | 300 |
- * The figures are representative values and are not quality guaranteed values.
- * In the case where the dimensional ratio of thickness (t) / diameter (D) in a round shape is 0.7

Product image of KE062
KE062 Samarium Cobalt ⌀11 (diameter 11 mm) × 1.5 mm (YKS240)
- Thickness direction magnetization Length 150 mT Width 0.80 kg
- Weight 1.18 g

Product image of KE113
KE113 Samarium Cobalt ⌀1 (diameter 1 mm) × 2 mm (YKG28): Ni plating
- Thickness direction magnetization Length 130 mT Width 0.01 kg
- Weight 0.01 g
Product Feature Details

Magnetization Direction: Y-direction

Magnetization Direction: Radial (KE023 only)
Cautions and Prohibitions
- There is a risk of injury, such as fingers getting pinched, if the magnet adheres to each other, tools, or iron pieces.
- If the magnets are accidentally attracted, fix one magnet and move the other to the side. This method makes it relatively easy to remove.
At this time, if tools are used, the magnet may be cracked or chipped. - Magnets are generally fragile, and neodymium magnets tend to corrode from the damaged surface.
Also, there is a risk of injury from these fragments. - Keep magnets out of reach of children. If you accidentally swallow a magnet, contact your doctor immediately.
- People with metal allergies may experience itching or redness if they come into contact with magnets.
If you experience any of these symptoms, do not touch the magnet. - If the magnet comes into direct contact with water, its components may leach out. Never drink this water.
- Bringing a magnet close to a credit card, cash card, etc., may render it unusable.
- Bringing magnets close to precision equipment such as PCs, smartphones, watches, etc., may cause malfunction.
- Placing a magnet close to an electronic medical device such as a cardiac pacemaker may impair its normal operation.
- Demagnetization may occur if the magnet is used outside the operating temperature range.
- Applying a strong impact to the magnet or processing it may demagnetize it.
- Excessive bending of rubber magnets with a thickness of 2 mm or more may cause cracks.