Hard Ferrite (Ceramic)
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Hard Ferrite (Ceramic) — Sintered Grades
Isotropic & Anisotropic strontium ferrite | Properties at 20 °C | Low cost, corrosion resistant
<table><thead><tr><th>Grade / Type</th><th>Br (mT)</th><th>Br (Gauss)</th><th>Hcb (kA/m)</th><th>Hcb (Oe)</th><th>Hcj (kA/m)</th><th>Hcj (Oe)</th><th>(BH) max (kJ/m³)</th><th>(BH) max (MGOe)</th><th>Temp Coef Br (%/°C)</th><th>Temp Coef Hcj (%/°C)</th><th>Tw Max (°C)</th></tr></thead><tbody><tr><th colspan="12">Isotropic</th></tr><tr><td>Y10T</td><td>200</td><td>2000</td><td>128</td><td>1600</td><td>192</td><td>2400</td><td>7.2</td><td>0.9</td><td>-0.2</td><td>0.27</td><td>250</td></tr><tr><td>Y20</td><td>200</td><td>2000</td><td>136</td><td>1700</td><td>208</td><td>2600</td><td>7.6</td><td>0.95</td><td>-0.2</td><td>0.27</td><td>250</td></tr><tr><th colspan="12">Anisotropic — Strontium Ferrite</th></tr><tr><td>Y25</td><td>360</td><td>3600</td><td>135</td><td>1700</td><td>151</td><td>1900</td><td>23.9</td><td>3</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y26H-1</td><td>380</td><td>3800</td><td>191</td><td>2400</td><td>239</td><td>3000</td><td>27.2</td><td>3.4</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y26H-2</td><td>370</td><td>3700</td><td>183</td><td>2300</td><td>295</td><td>3700</td><td>25.5</td><td>3.2</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y28</td><td>380</td><td>3800</td><td>191</td><td>2400</td><td>199</td><td>2500</td><td>27.2</td><td>3.4</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y28H-1</td><td>395</td><td>3950</td><td>204</td><td>2560</td><td>320</td><td>4020</td><td>28.6</td><td>3.6</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y28H-2</td><td>385</td><td>3850</td><td>192</td><td>2410</td><td>318</td><td>3990</td><td>27.5</td><td>3.45</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y30</td><td>395</td><td>3950</td><td>204</td><td>2560</td><td>215</td><td>2700</td><td>30.2</td><td>3.8</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y30BH</td><td>405</td><td>4050</td><td>224</td><td>2810</td><td>354</td><td>4450</td><td>31.8</td><td>4</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y32</td><td>410</td><td>4100</td><td>220</td><td>2760</td><td>230</td><td>2890</td><td>32</td><td>4</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y32H-1</td><td>430</td><td>4300</td><td>239</td><td>3000</td><td>318</td><td>4000</td><td>35</td><td>4.4</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y32H-2</td><td>420</td><td>4200</td><td>224</td><td>2810</td><td>358</td><td>4500</td><td>33.5</td><td>4.2</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y33</td><td>430</td><td>4300</td><td>220</td><td>2760</td><td>230</td><td>2890</td><td>35</td><td>4.4</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y33H</td><td>435</td><td>4350</td><td>231</td><td>2900</td><td>358</td><td>4500</td><td>36</td><td>4.5</td><td>-0.18</td><td>0.4</td><td>250</td></tr><tr><td>Y34</td><td>440</td><td>4400</td><td>220</td><td>2760</td><td>235</td><td>2950</td><td>36.4</td><td>4.6</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y35</td><td>450</td><td>4500</td><td>220</td><td>2760</td><td>230</td><td>2890</td><td>38.2</td><td>4.8</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y36</td><td>460</td><td>4600</td><td>215</td><td>2700</td><td>224</td><td>2810</td><td>40</td><td>5</td><td>-0.18</td><td>0.27</td><td>250</td></tr><tr><td>Y40</td><td>470</td><td>4700</td><td>360</td><td>4520</td><td>370</td><td>4650</td><td>43</td><td>5.4</td><td>-0.18</td><td>0.4</td><td>250</td></tr></tbody></table>