Samarium Cobalt magnets is consist of Samarium, Cobalt, and with a few transition metals. Samarium Cobalt magnets is a high performance, low temperature coefficient permanent magnet with its maximum working temperature 350 degree centigrade, when above 180 centigrade, its maximum energy product BH and steady temperature are superior than Neodymium magnets. As the corrosion resistance of Samarium Cobalt magnets is considered good, so it usually do not need to be coated. Samarium Cobalt magnets is widely used in motors, watch, transducers, instruments, positional detector, generators, radar communications, medical equipment, various magnetism spreading device, magnetic processor, electrical engineering, etc.

Machining and tolerances
We achieve dimensional size and tolerance by cutting or grinding with super abrasives. Samarium Cobalt (SmCo) cannot be ground with conventional drilling, turning or milling processes, and must be machined before they are magnetized. Additionally, large or complex assemblies are usually magnetized prior to assembly. Standard tolerances for Samarium Cobalt magnets are +/-.005 for ground dimensions. Adams stocks SmCo magnets in block, ring and disc form in a variety of sizes and grades, and we are fully equipped to produce the size and tolerance that you require.

1:15 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, 1:15 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.