SmCo Rare Earth Magnets Overview
Two common compositions of SmCo magnets are Sm1Co5 and Sm2Co17. Generally, the cost of SmCo magnets is higher than NdFeB magnets. As a big advantage, SmCo magnets can operate at higher temperatures up to 300 degrees Centigrade. SmCo magnets are widely used in applications in which higher operating temperature and higher corrosion and oxidation resistance are crucial. The main ingredient of SmCo permanent magnet is metal cobalt(CoY99.95%). So its price is high!
Key Advantages
SmCo magnets can operate at higher temperatures up to 300 degrees Centigrade.
High magnetic performance - up to about 32MGOe.
No need to be protected against oxidation.
Quick Leads
Density – 8.3 g/ cm³ (Sm1Co5), 8.4 g/ cm³ (Sm2Co17)
Manufacturing process - sintering (most common), with some injection molding and compression bonding.
Various shapes-- blocks, bars, discs, rings, arc segments, cylinders, etc.
Wide range of Grades - from about 1410 to 3214. (First 2 digits represent BH.max, and second two digits represent Intrinsic Coercivity, Hci.)
High magnetic performance - up to about 32MGOe.
Saturation magnetizing field required - about 50kOe
Operate at higher temperatures up to 300°c.
Common Applications
High performance motors Magnetic couplings Magnetic separators watches Transducers Speakers Instruments Medical equipments Positional detectors Various magnetism spreading devices Generators Magnetic processors magnetic derrick electrical engineering
SPECIFICATIONS OF Sm-Co MAGNETS
Type | Residual flux density | Intrinsic Coercive force | Coercive Force | Max.Energy product | ||||
mT | KGs | KA/M | KOe | KA/M | KOe | KJ/M3 | MGOe | |
YX16 | 750~880 | 7.5~8.8 | ≥1989 | ≥25 | 597±40 | 7.5±0.5 | 127±16 | 16±2 |
YX18 | 800~930 | 8.0~9.3 | ≥1432 | ≥18 | 637±40 | 8±0.5 | 143±16 | 18±2 |
YX20 | 850~980 | 8.5~9.8 | ≥1273 | ≥16 | 637±40 | 8±0.5 | 159±16 | 20±2 |
YXT18 | 900~1030 | 9.0~10.3 | ≥1194 | ≥15 | 637±40 | 8±0.5 | 143±16 | 18±2 |
YX22A | 900~1030 | 9.0~10.3 | ≥1989 | ≥25 | 653±40 | 8.2±0.5 | 175±16 | 22±2 |
YX22B | 900~1030 | 9.0~10.3 | ≥1432 | ≥18 | 635±40 | 8.2±0.5 | 175±16 | 22±2 |
YX24 | 980~1080 | 9.8~10.8 | ≥1432 | ≥18 | 676±40 | 8.5±0.5 | 191±16 | 24±2 |
YX26A | 1000~1130 | 10.0~11.3 | ≥1194 | ≥15 | 716±40 | 9.0±0.5 | 207±16 | 26±2 |
YX26B | 1000~1130 | 10.0~11.3 | ≥796 | ≥10 | 716±40 | 9.0±0.5 | 207±16 | 26±2 |
YX28 | 1030~1130 | 10.3~11.3 | ≥1432 | ≥18 | 756±40 | 9.5±0.5 | 223±16 | 28±2 |
YX27 | 1000~1100 | 10.0~11.0 | 413~556 | 5.2~7.0 | 357~516 | 4.5~6.5 | 183~223 | 26±2 |
YX30 | 1100~1200 | 11.0~12.0 | 454~597 | 5.7~7.5 | 438~517 | 5.5~6.5 | 239±16 | 30±2 |
.jpg)
