Magnetic Performance of Sintered NdFeB

GRADE  Remanence  BrCoercivity HcbIntrinsic Coercivity HcjMax. Energy ProductCurie Temp.Oper. Temp.
(BH)max
TKGsKA/mKOeKA/mKOeKJ/m3MGOeºCºC
N351.18-1.2211.8-12.2≥868≥10.9≥955≥12263-28733-36310≤80
N381.22-1.2512.2-12.5≥899≥11.3≥955≥12287-31036-39310≤80
N401.25-1.2812.5-12.8≥923≥11.6≥955≥12302-32638-41310≤80
N421.28-1.3212.8-13.2≥923≥11.6≥955≥12318-34240-42310≤80
N451.32-1.3613.2-13.6≥923≥11.6≥955≥12342-36642-45310≤80
N481.36-1.4013.6-14.0≥836≥10.5≥876≥11358-39045-48310≤80
N501.39-1.4213.9-14.2≥836≥10.5≥876≥11385-40648-51310≤80
N521.42-1.4614.2-14.6≥836≥10.5≥876≥11406-42251-53310≤80
N541.46-1.5014.6-15.0≥836≥10.5≥876≥11422-43853-55310≤80
N35M1.18-1.2211.8-12.2≥876≥11.0≥1114≥14263-28733-36310≤100
N38M1.22-1.2512.2-12.5≥899≥11.3≥1114≥14287-31036-39310≤100
N40M1.25-1.2812.5-12.8≥923≥11.6≥1114≥14302-32638-41310≤100
N42M1.28-1.3212.8-13.2≥955≥12.0≥1114≥14318-34240-43310≤100
N45M1.32-1.3613.2-13.6≥995≥12.5≥1114≥14342-36643-46310≤100
N48M1.36-1.4013.6-14.0≥1027≥12.9≥1114≥14358-39045-48310≤100
N50M1.39-1.4213.9-14.2≥1027≥12.9≥1114≥14385-40648-51310≤100
N52M1.42-1.4614.2-14.6≥995≥12.5≥1035≥13406-42250-53310≤100
N33H1.14-1.1811.4-11.8≥836≥10.5≥1353≥17247-27031-34330≤120
N35H1.18-1.2211.8-12.2≥868≥10.9≥1353≥17263-28733-36330≤120
N38H1.22-1.2512.2-12.5≥899≥11.3≥1353≥17287-31036-39330≤120
N40H1.25-1.2812.5-12.8≥923≥11.6≥1353≥17302-32638-41330≤120
N42H1.28-1.3212.8-13.2≥955≥12.0≥1353≥17318-34240-43330≤120
N45H1.32-1.3613.2-13.6≥995≥12.5≥1353≥17326-36643-46330≤120
N48H1.36-1.4013.6-14.0≥1027≥12.9≥1353≥17366-39046-49330≤120
N50H1.39-1.4213.9-14.2≥1027≥12.9≥1273≥16374-40648-51330≤120
N52H1.42-1.4614.2-14.6≥1035≥13.0≥1273≥16406-42250-53330≤120
N30SH1.08-1.1410.8-11.4≥810≥10.2≥1592≥20223-24728-31340≤150
N33SH1.14-1.1811.4-11.8≥844≥10.6≥1592≥20247-27131-34340≤150
N35SH1.18-1.2211.8-12.2≥876≥11.0≥1592≥20263-28733-36340≤150
N38SH1.22-1.2512.2-12.5≥899≥11.3≥1592≥20287-31036-39340≤150
N40SH1.25-1.2812.5-12.8≥939≥11.8≥1592≥20302-32638-41340≤150
N42SH1.28-1.3212.8-13.2≥955≥12.0≥1592≥20318-34240-43340≤150
N45SH1.32-1.3613.2-13.6≥995≥12.5≥1592≥20342-36643-46340≤150
N48SH1.36-1.4013.6-14.0≥1027≥12.8≥1512≥19366-39046-49340≤150
N50SH1.39-1.4213.9-14.2≥1035≥13.0≥1512≥19374-40648-51340≤150
N28UH1.02-1.0810.2-10.8≥764≥9.60≥1990≥25207-23126-29350≤180
N30UH1.08-1.1410.8 -11.4≥812≥10.2≥1990≥25223-24728-31350≤180
N33UH1.14-1.1411.4-11.8≥852≥10.7≥1990≥25247-27131-34350≤180
N35UH1.18-1.2211.8 -12.2≥860≥10.8≥1990≥25263-28733-36350≤180
N38UH1.22-1.2512.2-12.5≥876≥11.0≥1990≥25287-31036-39350≤180
N40UH1.25-1.2812.8-12.8≥939≥11.8≥1990≥25302-32638-41350≤180
N42UH1.28-1.3212.8-13.2≥955≥12.5≥1990≥25318-35040-44350≤180
N45UH1.32-1.3613.2-13.6≥955≥12.5≥1990≥25342-36643-46350≤180
N48UH1.36-1.4013.6-14.0≥1026≥12.9≥1990≥25366-39046-49350≤180
N28EH1.04-1.0910.4-10.9≥780≥9.80≥2388≥30207-23126-29360≤200
N30EH1.08-1.1410.8-11.4≥812≥10.2≥2388≥30223-24728-31360≤200
N33EH1.14-1.1811.4-11.8≥836≥10.5≥2388≥30247-27131-34360≤200
N35EH1.18-1.2211.8-12.2≥876≥11.0≥2388≥30263-28733-36360≤200
N38EH1.22-1.2912.2-12.9≥915≥11.5≥2388≥30287-31836-40360≤200
N40EH1.25-1.2812.8-12.8≥939≥11.8≥2388≥30302-32638-41360≤200
N42EH1.28-1.3212.8-13.2≥955≥12.5≥2388≥30318-35040-44360≤200
N45EH1.32-1.3613.2-13.6≥955≥12.5≥2388≥30342-36643-46360≤200
N48EH1.36-1.4013.6-14.0≥1026≥12.9≥2388≥30366-39046-49360≤200
N30AH1.08-1.1310.8-11.3≥804≥10.1≥2786≥35223-25528-32360≤220
N33AH1.13-1.1811.3-11.8≥836≥10.5≥2786≥35247-27131-34360≤220
N35AH1.18-1.2411.8-12.4≥860≥10.8≥2786≥35255-28732-36360≤220

 (Note): The above-mentioned maximum working temperature of the magnet is given when the ratio of length and diameter is 0.7(i.e. D/L=0.7).

The above-mentioned maximum temperature o magnet is changeable due to the ratio length and diameter, surface, and environmental factors.

Physical Properties of Sintered NdFeB

TempCoeff.of BrNormal: -0.12%/℃TempCoeff.of HcjNormal: -0.75–0.65 %/℃
Tgrade:-0.11%/℃Tgrade:-0.65–0.5 %/℃
LT grade:＜-0.10%/℃LT grade:＜-0.50%/℃
Density7.4-7.6g/cm³Electrical Resistivity114μΩ.cm
Vickers Hardness600HvThermal Conductivity8.95W/m·K
Curie Temperature310-340℃Relative recoil permeabilityμrev1.05