Model NO.: Sa21
Grade: Customized
Trademark: Uskym
Transport Package: Standard Carton Package
Specification: Customzed
Origin: Ningbo, China
HS Code: 8505190090
Disc Ferrite Magnets With Adhesive(Sa21)Ceramic (ferrite) magnets are composed of strontium carbonate and iron oxide. Ferrite Magnets are charcoal gray in color and usually appear in the forms of discs, rings, blocks, cylinders, and sometimes arcs for motors.Â
Least expensive material compared to alnico and rare earth magnets
High intrinsic coercive force
Available in simple shapes only due to manufacturing process
Lower service temperature than alnico, greater than rare earth
Lower energy product than alnico and rare earth magnets
Most common grades of Y25, Y30, Y30H-1, Y30H-2, Y32, Y33 ceramic are 1, 5 and 8 (1-8 possible)
| Magnetic properties of Sintered Ferrite Magnets: | ||||||||
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Chinese standard | ||||||||
| Material | Br | Hcb | Hcj | (BH)max | ||||
| mT | KGs | KA/m | KOe | KA/m | KOe | KJ/m 3 | MGOe | |
| Y10T | 200~235 | 2.0~2.35 | 125~160 | 1.57~2.01 | 210~280 | 2.64~3.52 | 6.5~9.5 | 0.8~1.2 |
| Y20 | 320~380 | 3.2~3.8 | 135~190 | 1.70~2.38 | 140~195 | 1.76~2.45 | 18.0~22.0 | 2.3~2.8 |
| Y22H | 310~360 | 3.1~3.6 | 220~250 | 2.77~3.14 | 280~320 | 3.52~4.02 | 20.0~24.0 | 2.5~3.0 |
| Y23 | 320~370 | 3.2~3.7 | 170~190 | 2.14~2.38 | 190~230 | 2.39~2.89 | 20.0~25.5 | 2.5~3.2 |
| Y25 | 360~380 | 3.6~4.0 | 135~170 | 1.70~2.14 | 140~200 | 1.76~2.51 | 22.5~28.0 | 2.8~3.5 |
| Y26H | 360~390 | 3.6~3.9 | 220~250 | 2.77~3.14 | 225~255 | 2.83~3.21 | 23.0~28.0 | 2.9~3.5 |
| Y27H | 370~400 | 3.7~4.0 | 205~250 | 2.58~3.14 | 210~255 | 2.64~3.21 | 25.0~29.0 | 3.1~3.7 |
| Y30 | 370~400 | 3.7~4.0 | 175~210 | 2.20~2.64 | 180~220 | 2.26~2.77 | 26.0~30.0 | 3.3~3.8 |
| Y30BH | 380~390 | 3.8~3.90 | 223~235 | 2.80~2.95 | 231~245 | 2.90~3.08 | 27.0~30.0 | 3.4~3.7 |
| Y30-1 | 380~400 | 3.8~4.0 | 230~275 | 2.89~3.46 | 235~290 | 2.95~3.65 | 27.0~32.0 | 3.4~4.0 |
| Y30H-2 | 395~415 | 3.95~4.15 | 275~300 | 3.46~3.77 | 310~335 | 3.90~4.21 | 28.5~32.5 | 3.5~4.0 |
| Y32 | 400~420 | 4.0~4.2 | 160~190 | 2.01~2.38 | 165~195 | 2.07~2.45 | 30.0~33.5 | 3.8~4.2 |
| Y33 | 410~430 | 4.1~4.3 | 220~250 | 2.77~3.14 | 225~255 | 2.83~3.21 | 31.5~35.0 | 4.0~4.4 |
| Y35 | 400~410 | 4.00~4.10 | 175~195 | 2.20~2.45 | 180~200 | 2.26~2.51 | 30.0~32.0 | 3.8~4.0 |
| Â | ||||||||
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â USA standard | ||||||||
| Material | Br | Hcb | Hcj | (BH)max | ||||
| mT | KGs | KA/m | KOe | KA/m | KOe | KJ/m 3 | MGOe | |
| C1 | 230 | 2.3 | 148 | 1.86 | 258 | 3.5 | 8.36 | 1.05 |
| C5 | 380 | 3.8 | 191 | 2.4 | 199 | 2.5 | 27 | 3.4 |
| C7 | 340 | 3.4 | 258 | 3.23 | 318 | 4 | 21.9 | 2.75 |
| C8(=C8A) | 385 | 3.85 | 235 | 2.95 | 242 | 3.05 | 27.8 | 3.5 |
| C8B | 420 | 4.2 | 232 | 2.913 | 236 | 2.96 | 32.8 | 4.12 |
| C9 | 380 | 3.8 | 280 | 3.516 | 320 | 4.01 | 26.4 | 3.32 |
| C10 | 400 | 4 | 288 | 3.617 | 280 | 3.51 | 30.4 | 3.82 |
| C11 | 430 | 4.3 | 200 | 2.512 | 204 | 2.56 | 34.4 | 4.32 |
| Â | ||||||||
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Europe standard | ||||||||
| The standard from International Electronics Committee (IEC404-8-1) | ||||||||
| O× 100=Y10T=C1  × 300=Y30=C5  O× 330=Y30 BH | ||||||||
| Grade | Allowed Value (min-typical) | |||||||
| Br | Hcb | BrHcj | (BH)max | |||||
| mT | KGs | KA/m | KOe | KA/m | KOe | KJ/m 3 | MGOe | |
| HF8/22 | 200-220 | 2.00-2.20 | 125-140 | 1.57-1.76 | 220-230 | 2.76-2.89 | 6.5-6.8 | 0.8-1.1 |
| HF20/19 | 320-333 | 3.20-3.33 | 170-190 | 2.14-2.39 | 190-200 | 2.39-2.51 | 20.0-21.0 | 2.5-2.7 |
| HF20/28 | 310-325 | 3.10-3.25 | 220-230 | 2.76-2.89 | 280-290 | 3.52-3.64 | 20.0-21.0 | 2.5-2.7 |
| HF22/30 | 350-365 | 3.50-3.65 | 255-265 | 3.20-3.33 | 290-300 | 3.64-3.77 | 22.0-23.5 | 2.8-3.0 |
| HF24/16 | 350-365 | 3.50-3.65 | 155-175 | 1.95-2.20 | 160-180 | 2.01-2.26 | 24.0-25.5 | 3.0-3.2 |
| HF24/23 | 350-365 | 3.50-3.65 | 220-230 | 2.76-2.89 | 230-240 | 2.89-3.01 | 24.0-25.5 | 3.0-3.2 |
| HF24/35 | 360-370 | 3.60-3.70 | 260-270 | 3.27-3.39 | 350-360 | 4.40-4.52 | 24.0-25.5 | 3.0-3.2 |
| HF26/16 | 370-380 | 3.70-3.80 | 155-175 | 1.95-2.20 | 160-180 | 2.01-2.26 | 26.0-27.0 | 3.2-3.4 |
| HF26/18 | 370-380 | 3.70-3.80 | 175-190 | 2.20-2.39 | 180-190 | 2.26-2.39 | 26.0-27.0 | 3.3-3.4 |
| HF26/24 | 370-380 | 3.70-3.80 | 230-240 | 2.89-3.01 | 240-250 | 3.01-3.14 | 26.0-27.0 | 3.3-3.4 |
| HF26/26 | 370-380 | 3.70-3.80 | 230-240 | 2.89-3.01 | 260-270 | 3.27-3.39 | 26.0-27.0 | 3.3-3.4 |
| HF26/30 | 385-395 | 3.85-3.95 | 260-270 | 3.27-3.39 | 300-310 | 3.77-3.89 | 26.0-27.0 | 3.3-3.4 |
| HF28/26 | 385-395 | 3.85-3.95 | 250-265 | 3.14-3.33 | 260-275 | 3.27-3.45 | 28.0-30.0 | 3.5-3.8 |
| HF28/28 | 385-395 | 3.85-3.95 | 260-270 | 3.27-3.39 | 280-290 | 3.50-3.60 | 28.0-30.0 | 3.5-3.8 |
| HF30/26 | 395-405 | 3.95-4.05 | 250-260 | 3.14-3.33 | 260-270 | 3.27-3.39 | 30.0-31.5 | 3.8-3.9 |
| HF32/17 | 410-420 | 4.10-4.20 | 160-180 | 2.01-2.26 | 165-175 | 2.07-2.20 | 32.0-33.0 | 4.0-4.1 |
| HF32/22 | 410-420 | 4.10-4.20 | 215-225 | 2.70-2.83 | 220-230 | 2.76-2.89 | 32.0-33.0 | 4.0-4.1 |
| HF32/25 | 410-420 | 4.10-4.20 | 240-250 | 3.01-3.14 | 250-260 | 3.14-3.27 | 32.0-33.0 | 4.0-4.1 |
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