NdFeB Basic Grades
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Neodymium Iron Boron (NdFeB) — Basic Sintered Grades
Properties at 20 °C | Magnetic flux density Br, coercivity Hcb & Hcj, energy product (BH) max, temperature coefficients
<table><thead><tr><th>Grade</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 Typical (kJ/m³)</th><th>(BH) max Typical (MGOe)</th><th>(BH) max Min (kJ/m³)</th><th>(BH) max Min (MGOe)</th><th>Temp Coef Br (%/°C)</th><th>Temp Coef Hcj (%/°C)</th><th>Tw Max (°C)</th></tr></thead><tbody><tr><td>N35</td><td>1210</td><td>12100</td><td>868</td><td>10900</td><td>955</td><td>12000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N38</td><td>1250</td><td>12500</td><td>860</td><td>10800</td><td>955</td><td>12000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N40</td><td>1270</td><td>12700</td><td>923</td><td>11600</td><td>955</td><td>12000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N42</td><td>1315</td><td>13150</td><td>868</td><td>10900</td><td>955</td><td>12000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N45</td><td>1360</td><td>13600</td><td>868</td><td>10900</td><td>955</td><td>12000</td><td>358</td><td>45</td><td>340.1</td><td>42.8</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N48</td><td>1400</td><td>14000</td><td>995</td><td>12500</td><td>955</td><td>12000</td><td>374</td><td>47</td><td>355.3</td><td>44.6</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N50</td><td>1425</td><td>14250</td><td>836</td><td>10500</td><td>875</td><td>11000</td><td>390</td><td>49</td><td>370.5</td><td>46.5</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N52</td><td>1450</td><td>14500</td><td>836</td><td>10500</td><td>875</td><td>11000</td><td>406</td><td>51</td><td>385.7</td><td>48.4</td><td>-0.12</td><td>-0.618</td><td>80</td></tr><tr><td>N55</td><td>1490</td><td>14900</td><td>716</td><td>9000</td><td>875</td><td>11000</td><td>430</td><td>54</td><td>408.5</td><td>51.3</td><td>-0.15</td><td>-0.618</td><td>60</td></tr><tr><td>N35M</td><td>1210</td><td>12100</td><td>868</td><td>10900</td><td>1114</td><td>14000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N38M</td><td>1250</td><td>12500</td><td>860</td><td>10800</td><td>1114</td><td>14000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N40M</td><td>1270</td><td>12700</td><td>923</td><td>11600</td><td>1114</td><td>14000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N42M</td><td>1315</td><td>13150</td><td>955</td><td>12000</td><td>1114</td><td>14000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N45M</td><td>1360</td><td>13600</td><td>971</td><td>12200</td><td>1114</td><td>14000</td><td>350</td><td>44</td><td>332.5</td><td>41.8</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N48M</td><td>1390</td><td>13900</td><td>995</td><td>12500</td><td>1114</td><td>14000</td><td>374</td><td>47</td><td>355.3</td><td>44.6</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N50M</td><td>1400</td><td>14000</td><td>1011</td><td>12700</td><td>1273</td><td>16000</td><td>390</td><td>49</td><td>370.5</td><td>46.5</td><td>-0.12</td><td>-0.595</td><td>100</td></tr><tr><td>N35H</td><td>1210</td><td>12100</td><td>868</td><td>10900</td><td>1353</td><td>17000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N38H</td><td>1250</td><td>12500</td><td>860</td><td>10800</td><td>1353</td><td>17000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N40H</td><td>1270</td><td>12700</td><td>923</td><td>11600</td><td>1353</td><td>17000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N42H</td><td>1315</td><td>13150</td><td>868</td><td>10900</td><td>1353</td><td>17000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N45H</td><td>1360</td><td>13600</td><td>971</td><td>12200</td><td>1353</td><td>17000</td><td>350</td><td>44</td><td>332.5</td><td>41.8</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N48H</td><td>1390</td><td>13900</td><td>1011</td><td>12700</td><td>1273</td><td>16000</td><td>374</td><td>47</td><td>355.3</td><td>44.6</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N50H</td><td>1400</td><td>14000</td><td>1011</td><td>12700</td><td>1273</td><td>16000</td><td>390</td><td>49</td><td>370.5</td><td>46.5</td><td>-0.12</td><td>-0.572</td><td>120</td></tr><tr><td>N35SH</td><td>1210</td><td>12100</td><td>811</td><td>10200</td><td>1592</td><td>20000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N38SH</td><td>1250</td><td>12500</td><td>868</td><td>10900</td><td>1592</td><td>20000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N40SH</td><td>1260</td><td>12600</td><td>999</td><td>11900</td><td>1592</td><td>20000</td><td>306.5</td><td>39</td><td>291.2</td><td>37</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N42SH</td><td>1315</td><td>13150</td><td>868</td><td>10900</td><td>1592</td><td>20000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N45SH</td><td>1360</td><td>13600</td><td>979</td><td>12300</td><td>1592</td><td>20000</td><td>350</td><td>44</td><td>332.5</td><td>41.8</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N48SH</td><td>1390</td><td>13900</td><td>979</td><td>12300</td><td>1592</td><td>20000</td><td>374</td><td>47</td><td>355.3</td><td>44.6</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N35UH</td><td>1210</td><td>12100</td><td>868</td><td>10900</td><td>1990</td><td>25000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.51</td><td>180</td></tr><tr><td>N38UH</td><td>1250</td><td>12500</td><td>868</td><td>10900</td><td>1990</td><td>25000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.51</td><td>180</td></tr><tr><td>N40UH</td><td>1270</td><td>12700</td><td>868</td><td>10900</td><td>1990</td><td>25000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.51</td><td>180</td></tr><tr><td>N42UH</td><td>1315</td><td>13150</td><td>868</td><td>10900</td><td>1990</td><td>25000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.51</td><td>180</td></tr><tr><td>N45UH</td><td>1360</td><td>13600</td><td>979</td><td>12300</td><td>1990</td><td>25000</td><td>350</td><td>44</td><td>332.5</td><td>41.8</td><td>-0.12</td><td>-0.51</td><td>180</td></tr><tr><td>N35EH</td><td>1210</td><td>12100</td><td>868</td><td>10900</td><td>2388</td><td>30000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N38EH</td><td>1250</td><td>12500</td><td>868</td><td>10900</td><td>2388</td><td>30000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N40EH</td><td>1270</td><td>12700</td><td>979</td><td>12300</td><td>2388</td><td>30000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N42EH</td><td>1315</td><td>13150</td><td>868</td><td>10900</td><td>2388</td><td>30000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N28AH</td><td>1075</td><td>10750</td><td>780</td><td>9800</td><td>2706</td><td>34000</td><td>227</td><td>29</td><td>215.6</td><td>27.5</td><td>-0.12</td><td>-0.449</td><td>220</td></tr><tr><td>N30AH</td><td>1135</td><td>11350</td><td>812</td><td>10200</td><td>2706</td><td>34000</td><td>243</td><td>31</td><td>230.8</td><td>29.4</td><td>-0.12</td><td>-0.449</td><td>220</td></tr><tr><td>N33AH</td><td>1175</td><td>11750</td><td>844</td><td>10600</td><td>2706</td><td>34000</td><td>267</td><td>34</td><td>253.6</td><td>32.3</td><td>-0.12</td><td>-0.449</td><td>220</td></tr><tr><td>N35AH</td><td>1210</td><td>12100</td><td>883</td><td>11100</td><td>2706</td><td>34000</td><td>282.5</td><td>35</td><td>268.4</td><td>33.2</td><td>-0.12</td><td>-0.375</td><td>220</td></tr><tr><td>N42AH</td><td>1315</td><td>13150</td><td>868</td><td>10900</td><td>2388</td><td>30000</td><td>334</td><td>42</td><td>317.3</td><td>39.9</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N45AH</td><td>1350</td><td>13500</td><td>995</td><td>12500</td><td>2388</td><td>30000</td><td>358</td><td>45</td><td>340.1</td><td>42.8</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N30EH</td><td>1185</td><td>11850</td><td>812</td><td>10200</td><td>2388</td><td>30000</td><td>243</td><td>31</td><td>230.8</td><td>29.4</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N33EH</td><td>1235</td><td>12350</td><td>811</td><td>10200</td><td>2388</td><td>30000</td><td>279</td><td>35</td><td>265.1</td><td>33.2</td><td>-0.12</td><td>-0.449</td><td>200</td></tr><tr><td>N38AH</td><td>1250</td><td>12500</td><td>868</td><td>10900</td><td>2706</td><td>34000</td><td>306</td><td>38</td><td>290.7</td><td>36.1</td><td>-0.12</td><td>-0.449</td><td>220</td></tr><tr><td>N40AH</td><td>1270</td><td>12700</td><td>915</td><td>11500</td><td>2706</td><td>34000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.449</td><td>220</td></tr><tr><td>N45AH</td><td>1350</td><td>13500</td><td>979</td><td>12300</td><td>2706</td><td>34000</td><td>358</td><td>45</td><td>340.1</td><td>42.8</td><td>-0.12</td><td>-0.449</td><td>220</td></tr><tr><td>N51SH</td><td>1410</td><td>14100</td><td>883</td><td>11100</td><td>1592</td><td>20000</td><td>406</td><td>51</td><td>385.7</td><td>48.4</td><td>-0.12</td><td>-0.549</td><td>150</td></tr><tr><td>N40AH</td><td>1270</td><td>12700</td><td>883</td><td>11100</td><td>2706</td><td>34000</td><td>318</td><td>40</td><td>302.1</td><td>38</td><td>-0.12</td><td>-0.449</td><td>220</td></tr></tbody></table>