Smco magnet

Specifications

resistance to corrosion;resistance to demagnetization (Hc)
magnetic strength (Br) ;high operating temperatures (350 C)

Smco Magnets:

1:5 alloy material
1:5 offers 16 MGOe (energy product) to 22 MGOe and is made up of approximately 50% samarium and 50% cobalt. The 1:5 series has a maximum recommended operating temperature of 250°C. SmCo 1:5 magnets require lower field strengths than 2:17 materials to magnetize. In some instances, 1:5 material may be magnetized with multiple poles, provided that a magnetizing fixture is available.

2:17 alloy material
2:17 offers 24 MGOe to 32 MGOe and is composed of about 25% samarium, 5% copper, 18% iron, 2% hafnium or zirconium, with the remainder being cobalt. The 2:17 series of has a maximum operating temperature of 350°C. Special grades of 2:17 are available which can operate to even higher temperatures. SmCo 2:17 requires extremely high magnetizing fields, and multiple pole magnetization is not possible.

 

Rare Earth Magnet

NdFeB(Neodymium-Iron-Boron) This is the most powerful permanent magnet on the market, and it offers a great return for cost/performance. Neodymium magnets have the highest field/surface strength (Br), and offer high coercivity (Hc) at reasonable prices. However, b/c of their corrosive nature, they are usually produced by plating or coating after they are machined (nickel, zinc, etc.). Due to its exceptional magnetic strength, extreme caution is required during handling and assembly. SmCo (Samarium Cobalt) SmCo5 and Sm2Co17 Expensive and extremely brittle, this alloy offers a unique combination of high levels as below: resistance to corrosion resistance to demagnetization (Hc) magnetic strength (Br) high operating temperatures (350°C) Similar to neodymium magnets, extreme caution/care is required due to its high magnetic force.