HSMAG Rare Earth SmCo Permanent Magnet Tile Shaped Wearproof Strong
HSMAG Rare Earth SmCo Bread Shape Permanent Magnet Wearproof Strong Magnetic
Samarium cobalt magnet magnetic property is not weak than Ndfeb magnet, with high coercivity, good temperature stability (the highest use temperature is 250 to 550℃, Curie temperature is 700 to 800℃) and other characteristics, and samarium cobalt corrosion resistance, without electroplating treatment, is widely used in many fields.
Properties of samarium cobalt permanent magnets
1. Samarium cobalt permanent magnets have excellent corrosion and oxidation resistance, so they do not require any coating:
2, samarium cobalt permanent magnet has high magnetic energy product and high coercivity, its magnetic energy product can be as high as 239kJ /m3(30MGOE), magnetic performance is better than aluminum-nickel-cobalt permanent magnet and ferrite permanent magnet, is ferrite permanent magnet 8 times, aluminum-nickel-cobalt permanent magnet 3 times. Therefore, the permanent magnet component made of SMCO permanent magnet system has light weight, small volume and stable performance, which can be used in electroacoustic telecommunications equipment.
3. Samarium cobalt permanent magnet with high Curie temperature and small temperature coefficient can be used at a high temperature of 300 degrees.
4. Samarium cobalt permanent magnet has high brittleness, high hardness, low bending strength, tensile strength and compressive strength, so it is not suitable to be used as structural parts.
There are two families of Sm-Co magnets — SmCo5 and Sm2Co17.
SmCo5 has a hexagonal crystal structure that consists of five atoms of cobalt for each samarium atom. SmCo5 magnets are also known as Sm-Co 1:5, samarium-cobalt 1:5 magnets, SmCo series 1:5 magnets, or sometimes as 1:5 magnets.
Sm2Co17 has a rhombohedral crystal structure, which is obtained by replacing Sm atoms in the SmCo5 hexagonal structure with a pair of Co atoms. Other elements are added to improve properties such as intrinsic coercivity or reversible temperature coefficient. Elements such as iron, copper, hafnium, gadolinium, terbium, erbium and zirconium are commonly used. Sm2Co17 is also known as samarium-cobalt 2:17, SmCo Series 2:17, Sm(Co,Fe,Cu,Zr)z or sometimes as 2:17 magnets.
1:5 has a maximum energy product, (BH)max, around 20 MGOe. The reversible temperature coefficient of residual induction of SmCo5 is about -0.04%/°C. 2:17 has a maximum energy product (BH)max as high as 35 MGOe. The reversible temperature coefficient of residual induction is about -0.035%/oC.
Both SmCo5 and Sm2Co17 have very high intrinsic coercivity, Hci, a measurement of resistance to demagnetization. They also have very good corrosion resistance, thermal stability and resistance to radiation. Although brittle, they do not require a surface coating and can be used at temperatures up to 300oC.
| 牌号 | 剩磁 | 矫顽力 | 内禀矫顽力 | 最大磁能积 | 温度系数 | 最大工作温度Max.oper. Temp | 密度Density | |||||||||||||
| Grade | Remanece ( 20°C) | Coercivity (20°C) | Intrinsic coercive force ( 20°C ) | Energy Density | Temp.coefficient %/C | |||||||||||||||
| Br | Hcb | Hcj | (BH) max | 20-100°C | 20-150°C | |||||||||||||||
| Typ. | min | Min | Min | Typ. | min | Tk (Br) typ. | Tk (Hcj) typ. | Tk (Br) typ. | Tk (Hcj) typ | |||||||||||
| KGs | Tesla | KGs | Tesla | KOe | KA/m | KOe | KA/m | MGOe | KJ/m3 | MGOe | KJ/m3 | %/°C | %/°C | %/°C | %/°C | °C | °F | g/cm3 | ||
| SmCo5 | HSMAG/XG16 | 8.50 | 0.85 | 8.00 | 0.80 | 7.50 | 597 | 18.00 | 1433 | 16.00 | 127 | 14.00 | 111 | -0.04 | -0.14 | -0.045 | -0.22 | 250 | 482 | 8.1-8.3 |
| HSMAG/XG18 | 9.00 | 0.90 | 8.50 | 0.85 | 8.00 | 664 | 18.00 | 1433 | 18.00 | 143 | 16.00 | 127 | -0.04 | -0.14 | -0.045 | -0.22 | 250 | 482 | 8.1-8.3 | |
| HSMAG/XG20 | 9.50 | 0.95 | 8.80 | 0.88 | 8.50 | 677 | 15.00 | 1195 | 20.00 | 159 | 18.00 | 143 | -0.04 | -0.14 | -0.045 | -0.22 | 250 | 482 | 8.1-8.3 | |
| Sm2Co17 | HSMAG/XG24A | 10.30 | 1.03 | 9.50 | 0.95 | 8.50 | 677 | 25.00 | 1990 | 24.00 | 191 | 22.00 | 175 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 |
| HSMAG/XG26A | 10.50 | 1.05 | 10.30 | 1.03 | 9.00 | 716 | 25.00 | 1990 | 26.00 | 207 | 24.00 | 191 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG28A | 10.70 | 1.07 | 10.50 | 1.05 | 9.50 | 756 | 20.00 | 1592 | 28.00 | 223 | 26.00 | 207 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG30A | 11.00 | 1.10 | 10.70 | 1.07 | 10.00 | 796 | 20.00 | 1592 | 29.00 | 231 | 27.00 | 215 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG30EH | 11.20 | 1.12 | 10.80 | 1.08 | 10.20 | 812 | 20.00 | 1592 | 29.50 | 235 | 28.00 | 223 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG32A | 11.50 | 1.15 | 10.90 | 1.09 | 10.30 | 820 | 20.00 | 1592 | 30.50 | 243 | 28.50 | 226 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG33EH | 11.70 | 1.17 | 11.00 | 1.10 | 10.50 | 836 | 20.00 | 1592 | 31.50 | 251 | 29.00 | 235 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG18AH | 10.00 | 1.00 | 8.50 | 0.85 | 8.00 | 637 | 30.00 | 2388 | 18.00 | 143 | 15.00 | 119 | -0.02 | -0.15 | -0.03 | -0.16 | 400 | 752 | 8.3-8.5 | |
| Note | For large bread products, no thin size is allowed, because SmCo's huge brittleness will easily cause breakage during assembly | |||||||||||||||||||
Mianyang Hengxin Magnetic Materials Co., Ltd. was founded in 1999, specializing in the manufacture and development of sintered samarium cobalt permanent magnet materials and devices; after years of development, it has formed a production capacity of 500 tons of samarium cobalt permanent magnet materials per year, and is the main manufacturer of samarium cobalt permanent magnet materials and devices in China.
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