Grade | Brm T(KGs) | Hcb KA/m(kOe) | Hcj KA/m(kOe) | (BH)max KJ/m3(MGOe) | (Tw) |
N27 | 1030-1080(10.3-10.8) | ≥796(≥10.0) | ≥955(≥12) | 199-231(25-29) | 80℃ |
N30 | 1080-1130(10.8-11.3) | ≥796(≥10.0) | ≥955(≥12) | 223-247(28-31) | 80℃ |
N33 | 1130-1170(11.3-11.7) | ≥836(≥10.5) | ≥955(≥12) | 247-271(31-34) | 80℃ |
N35 | 1170-1220(11.7-12.2) | ≥868(≥10.9) | ≥955(≥12) | 263-287(33-36) | 80℃ |
N38 | 1220-1250(12.2-12.5) | ≥899(≥11.3) | ≥955(≥12) | 287-310(36-39) | 80℃ |
N40 | 1250-1280(12.5-12.8) | ≥907(≥11.4) | ≥955(≥12) | 302-326(38-41) | 80℃ |
N42 | 1280-1320(12.8-13.2) | ≥915(≥11.5) | ≥955(≥12) | 318-342(40-43) | 80℃ |
N45 | 1320-1380(13.2-13.8) | ≥923(≥11.6) | ≥955(≥12) | 342-366(43-46) | 80℃ |
N48 | 1380-1420(13.8-14.2) | ≥923(≥11.6) | ≥876(≥12) | 366-390(46-49) | 80℃ |
N50 | 1400-1450(14.0-14.5) | ≥796(≥10.0) | ≥876(≥12) | 382-406(48-51) | 60℃ |
N52 | 1430-1480(14.3-14.8) | ≥796(≥10.0) | ≥876(≥12) | 398-422(50-53) | 60℃ |
N30M | 1080-1130(10.8-11.3) | ≥796(≥10.0) | ≥1114(≥14) | 223-247(28-31) | 100℃ |
N33M | 1130-1170(11.3-11.7) | ≥836(≥10.5) | ≥1114(≥14) | 247-263(31-33) | 100℃ |
N35M | 1170-1220(11.7-12.2) | ≥868(≥10.9) | ≥1114(≥14) | 263-287(33-36) | 100℃ |
N38M | 1220-1250(12.2-12.5) | ≥899(≥11.3) | ≥1114(≥14) | 287-310(36-39) | 100℃ |
N40M | 1250-1280(12.5-12.8) | ≥923(≥11.6) | ≥1114(≥14) | 302-326(38-41) | 100℃ |
N42M | 1280-1320(12.8-13.2) | ≥955(≥12.0) | ≥1114(≥14) | 318-342(40-43) | 100℃ |
N45M | 1320-1380(13.2-13.8) | ≥995(≥12.5) | ≥1114(≥14) | 342-366(43-46) | 100℃ |
N48M | 1360-1430(13.6-14.3) | ≥1027(≥12.9) | ≥1114(≥14) | 366-390(46-49) | 100℃ |
N50M | 1400-1450(14.0-14.5) | ≥1033(≥1.0) | ≥1114(≥14) | 382-406(48-51) | 100℃ |
N30H | 1080-1130(10.8-11.3) | ≥796(≥10.0) | ≥1353(≥17) | 223-247(28-31) | 120℃ |
N33H | 1130-1170(11.3-11.7) | ≥836(≥10.5) | ≥1353(≥17) | 247-271(31-34) | 120℃ |
N35H | 1170-1220(11.7-12.2) | ≥868(≥10.9) | ≥1353(≥17) | 263-287(33-36) | 120℃ |
N38H | 1220-1250(12.2-12.5) | ≥899(≥11.3) | ≥1353(≥17) | 287-310(36-39) | 120℃ |
N40H | 1250-1280(12.5-12.8) | ≥923(≥11.6) | ≥1353(≥17) | 302-326(38-41) | 120℃ |
N42H | 1280-1320(12.8-13.2) | ≥955(≥12.0) | ≥1353(≥17) | 318-342(40-43) | 120℃ |
N45H | 1300-1360(13-13.6) | ≥963(≥12.1) | ≥1353(≥17) | 326-358(43-46) | 120℃ |
N48H | 1370-1430(13.7-14.3) | ≥995(≥12.5) | ≥1353(≥17) | 366-390(46-49) | 120℃ |
N30SH | 1080-1130(10.8-11.3) | ≥804(≥10.1) | ≥1592(≥20) | 223-247(28-31) | 150℃ |
N33SH | 1130-1170(11.3-11.7) | ≥844(≥10.6) | ≥1592(≥20) | 247-271(31-34) | 150℃ |
N35SH | 1170-1220(11.7-12.2) | ≥876(≥11.0) | ≥1592(≥20) | 263-287(33-36) | 150℃ |
N38SH | 1220-1250(12.2-12.5) | ≥907(≥11.4) | ≥1592(≥20) | 287-310(36-39) | 150℃ |
N40SH | 1240-1280(12.5-12.8) | ≥939(≥11.8) | ≥1592(≥20) | 302-326(38-41) | 150℃ |
N42SH | 1280-1320(12.8-13.2) | ≥987(≥12.4) | ≥1592(≥20) | 318-342(40-43) | 150℃ |
N45SH | 1320-1380(13.2-13.8) | ≥1003(≥12.6) | ≥1592(≥20) | 342-366(43-46) | 150℃ |
N28UH | 1020-1080(10.2-10.8) | ≥764(≥9.6) | ≥1990(≥25) | 207-231(26-29) | 180℃ |
N30UH | 1080-1130(10.8-11.3) | ≥812(≥10.2) | ≥1990(≥25) | 223-247(28-31) | 180℃ |
N33UH | 1130-1170(11.3-11.7) | ≥852(≥10.7) | ≥1990(≥25) | 247-271(31-34) | 180℃ |
N35UH | 1180-1170(11.8-12.2) | ≥860(≥10.8) | ≥1990(≥25) | 263-287(33-36) | 180℃ |
N38UH | 1220-1250(12.2-12.5) | ≥876(≥11.0) | ≥1990(≥25) | 287-310(36-39) | 180℃ |
N40UH | 1240-1280(12.5-12.8) | ≥899(≥11.3) | ≥1990(≥25) | 302-326(38-41) | 180℃ |
N28EH | 1040-1090(10.4-10.9) | ≥780(≥9.8) | ≥2388(≥30) | 207-231(26-29) | 200℃ |
N30EH | 1080-1130(10.8-11.3) | ≥812(≥10.2) | ≥2388(≥30) | 223-247(28-31) | 200℃ |
N33EH | 1130-1170(11.3-11.7) | ≥836(≥10.5) | ≥2388(≥30) | 247-271(31-34) | 200℃ |
N35EH | 1170-1220(11.7-12.2) | ≥876(≥11.0) | ≥2388(≥30) | 263-287(33-36) | 200℃ |
N38EH | 1220-1250(12.2-12.5) | ≥899(≥11.3) | ≥2388(≥30) | 287-310(36-39) | 200℃ |
Physical and Mechanical Properties of Sintered NdFeB magnet:
Thermal Conductivity | 7.7 kcal/m-h-°C |
Young's Modulus | 1.7 x 104 kg/mm2 |
Bending Strength | 24 kg/mm2 |
Compressive Strength | 80 kg/mm2 |
Electrical Resistivity | 160 µ-ohm-cm/cm2 |
Density | 7.4-7.55 g/cm3 |
Vickers Hardness | 500 - 600 |
Available coatings for Sintered NdFeB magnet:
Available Coatings: | ||||
Surface | Coating | Thickness (Microns) | Color | Resistance |
Passivation | 1 | Silver Grey | Temporary Protection | |
Nickel | Ni+Ni | 10-20 | Bright Silver | Excellent against Humidity |
Ni+Cu+Ni | ||||
Zinc | Zn | 8-20 | Bright Blue | Good Against Salt Spray |
C-Zn | Shinny Color | Excellent Against Salt Spray | ||
Tin | Ni+Cu+Sn | 15-20 | Silver | Superior Against Humidity |
Gold | Ni+Cu+Au | 10-20 | Gold | Superior Against Humidity |
Copper | Ni+Cu | 10-20 | Gold | Temporary Protection |
Epoxy | Epoxy | 15-25 | Black, Red, Grey | Excellent Against Humidity & Salt Spray |
Ni+Cu+Epoxy | ||||
Zn+Epoxy | ||||
Chemical | Ni | 10-20 | Silver Grey | Excellent Against Humidity |
Parylene | Parylene | 5-20 | Grey | Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria. FDA Approved. |
