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1、 烧结钕铁硼永磁体按内禀矫顽力大小分为低矫顽力N、中等矫顽力M、高矫顽力H、特高矫顽力SH、超高矫顽力UH、极高矫顽力EH、AH七类产品。每类产品按最大磁能积大小划分为若干个牌号(详见表1)。牌号表示方法N 40 第三层次 表示钕铁硼产品的矫顽力级别（没有该项时表示矫顽力为955KA/m）第二层次 表示钕铁硼产品的磁能积第一层次 表示钕铁硼产品牌号示例：N40H表示（BH）max为303318kJ/m3,Hcj为1353kA/m的烧结钕铁硼磁体。表1 烧结钕铁硼磁体233下的磁性能牌号magnetgrade剩磁Br矫顽力Hcb内禀矫顽力Hcj最大磁能积(BH)max温度系数最高连续工作温度Tw
2、密度BrHcjTkGskA/mkOekA/mkOekJ/m3MGOe%/%/g/m3N521.42-1.4814.2-14.883610.587611389-42249-53-0.12-0.65807.5N501.40-1.4514.0-14.583610.595512374-40647-51-0.12-0.65807.5N481.37-1.4213.7-14.283610.595512358-38245-48-0.12-0.65807.5N451.32-1.3713.2-13.783610.595512342-35843-45-0.12-0.65807.5N421.29-1.3212.9-1
3、3.283610.595512318-33440-42-0.12-0.65807.5N401.26-1.2912.6-12.983610.595512303-31838-40-0.12-0.65807.5N381.22-1.2612.2-12.685910.895512287-30336-38-0.12-0.65807.5N351.17-1.2111.7-12.185910.895512263-27933-35-0.12-0.65807.4-7.5N331.14-1.1711.4-11.783610.595512247-26331-33-0.12-0.65807.4-7.5N301.08-1.
4、1210.8-11.279610.095512223-23928-30-0.12-0.65807.4-7.5N50M1.39-1.4513.9-14.5105013.2111414374-40647-51-0.12-0.651007.5N48M1.37-1.4213.7-14.2101812.8111414366-39046-49-0.12-0.651007.5N45M1.32-1.3813.2-13.898712.4111414334-36642-46-0.12-0.651007.5N42M1.29-1.3212.9-13.295512.0111414318-33440-42-0.12-0.
5、651007.5N40M1.26-1.2912.6-12.993911.8111414303-31838-40-0.12-0.651007.5N38M1.22-1.2612.2-12.691611.5111414287-30336-38-0.12-0.651007.5N35M1.17-1.2111.7-12.187611.0111414263-27933-35-0.12-0.651007.5N33M1.14-1.1711.4-11.785210.7111414247-26331-33-0.12-0.651007.5N30M1.08-1.1210.8-11.281210.2111414223-2
6、3928-30-0.12-0.651007.5N48H1.36-1.4213.6-14.2102612.9127316358-39045-49-0.11-0.581207.5N45H1.32-1.3813.2-13.898712.4135317334-36642-46-0.11-0.581207.5N42H1.29-1.3212.9-13.295512.0135317318-33440-42-0.11-0.581207.5N40H1.26-1.2912.6-12.993911.8135317303-31838-40-0.11-0.621207.5N38H1.22-1.2612.2-12.691
7、611.6135317287-30336-38-0.11-0.621207.5N35H1.17-1.2111.7-12.187511.0135317263-27933-35-0.11-0.621207.5N33H1.14-1.1711.4-11.785110.7135317247-26331-33-0.11-0.621207.5N30H1.08-1.1210.8-11.281210.2135317223-23928-30-0.11-0.621207.5N44SH1.30-1.3713.0-13.799512.5159220326-35841-45-0.11-0.6015047.5N42SH1.
8、29-1.3212.9-13.296312.1159220318-33440-42-0.11-0.601507.5N40SH1.26-1.2912.6-12.993111.7159220303-31838-40-0.11-0.601507.5N38SH1.22-1.2612.2-12.689911.3159220287-30336-38-0.11-0.601507.5N35SH1.17-1.2111.7-12.187611.0159220263-27933-35-0.11-0.601507.5N33SH1.14-1.1711.4-11.785110.7159220247-26331-33-0.
9、11-0.601507.5N30SH1.08-1.1210.8-11.281210.2159220223-23928-30-0.11-0.601507.5N40UH1.26-1.3212.6-13.293911.8199025302-33438-42-0.10-0.551807.5N38UH1.22-1.2612.2-12.691511.5199025287-30336-38-0.10-0.551807.5N35UH1.17-1.2111.7-12.187511.0199025263-27933-35-0.10-0.551807.5N33UH1.14-1.1711.4-11.785110.71
10、99025247-26331-33-0.10-0.551807.5N30UH1.08-1.1210.8-11.281210.2199025223-23928-30-0.10-0.551807.5N38EH1.22-1.2912.2-12.990711.4238830287-31836-40-0.09-0.502007.5N35EH1.18-1.2511.8-12.587511.0238830263-29533-37-0.09-0.502007.5N33EH1.14-1.1711.4-11.785110.7238830247-26331-33-0.09-0.502007.5N30EH1.08-1.1210.8-11.281210.2238830223-23928-30-0.09-0.502007.5N32AH1.12-1.2010.8-12.086010.8262633247-27931-35-0.09-0.442207.5注: 1.Tw为L/D=0.7的磁体，经该温度老化后，开路磁通不可逆损失5。2.计算温度系数的温度区间划分为：M档及以下，T：23100；H档及以上，T：23150。3.SI与CGS单位制下磁性能的换算关系：1T=10kGs，1kOe=79.6kAm，lMGOe=7.96kJm3。4.产品磁性能检验结果的数值修约按GBT 8170规定进行。