If you are reading this on a computer, own a car, have flown in an airplane, talked on a cell phone, used a video camera, or have been subjected to an MRI, we all owe thanks to the late Dr. Karl Strnat for discovering Samarium Cobalt
magnets in 1966.
IMIhttp://www.magnetsim.com/ offers a wide range of SMCO magnets, with sizes ranging from 0.20” thick to 4.000” long, in disc, square, arc, or rectangle. We also develop customer specific requirements for any application, size, or industry.
-Key points about SMCO magnets:
- This material is used in many cases where it is more cost effective than using high temperature (dysprosium additive) Neodymium. Since Samarium Cobalt is very stable at high temperature as well as severe environments, it allows for a diverse range of applications from “Space applications” to implants into the human body.
- The material is direction dependent and once it has been magnetized it is almost impossible to reverse the direction of magnetization. Therefore, if grinding or machining is necessary to fit the size of your demand, SMCO 2-17 is not affected magnetically.
- SMCO is very brittle – and Nickel plating is used to strengthen the material.
Physical and Mechanical Characteristics
| Composition | SmCo 2:1732 30 28 26 24 22 | SmCo 1:524 22 20 18 | ||||
| Physical characteristics | ||||||
| Curie temperature | 0C | 800 to 850 | 700 to 750 | |||
| (K) | (1073 to 1123) | (973 to 1023) | ||||
| Thermal expansion coefficient | C// | 10C | 8×10‐6 | 6×10‐6 | ||
| (1K) | (8×10‐6) | (6×10‐6) | ||||
| CT | 10C | 11×10‐6 | 13×10‐6 | |||
| (1K) | (11×10‐6 ) | (13×10‐6) | ||||
| Specific heat | Cal/g0C | 8×10-2 | 9×10‐2 | |||
| (J/kgK) | (335) | (377) | ||||
| Thermal conductivity | 0Kcal/mhr C | 10 | 11 | |||
| (W/mK) | (12) | (13) | ||||
| Specific resistivity | Ω‐cm | 8.6X10-5 | 5.3×10‐5 | |||
| Composition | SmCo2:17 | SmCo 1:524 22 20 18 | ||||
| Mechanical characteristics | ||||||
| Deflection strength | 2Kg/mm | 15 | 18 | |||
| (N/m2) | (1.5×108) | (1.8×108) | ||||
| Vickers hardness | Hv | 500 to 600 | 450 to 500 | |||
| Compressive strength | 2Kg/mm | 82 | 102 | |||
| (N/m2) | (8×108) | (10×108) | ||||
| Tensile strength | Kg/mm2 | 3.6 | 4.1 | |||
| (N/m2) | (3.5×107) | (4×107) | ||||
| Young’s modulus | 2Kg/mm | 41.2×10 | 1.6×104 | |||
| (N/m2) | (1.2×1011) | (1.6×1011) | ||||
Contact us today (219) 465-1998 and speak with Don Coleman, President and Owner of International Magnaproducts, Inc. He will personally assist you with the proper selection for your magnetic needs and is happy to discuss ways he can save you money!
International Magnaproducts Incorporated (IMI) http://www.magnetsim.com (219) 465-1998 is a distributor and sales agent for permanent magnet producers worldwide. Established in 1982 as a result of customer requests for new and unique magnetic materials, IMI was formed to locate the best producers in the world. IMI’s mission is to assist in the design and supply of cost effective magnetic materials for their customers. We represent 28 different factories from 11 countries.