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超強力磁鐵(釹鐵硼磁鐵)

永久磁鐵(釹鐵硼磁鐵)為目前各種磁鐵材質中唯一最強的實用永磁材料，技術成熟於上世紀80年代。與通常的鋁鎳鈷，鐵氧體等永磁材料相比，永久磁鐵有著十份優異的特性．其磁能積遠高於其它類磁體，約為鋁鎳鈷和硬磁鐵氧體等磁性材料的10倍，理論值達64MGOe．可稱“一代磁王”．

永久磁鐵表面通常以電鍍來防止表面氧化，可分鍍鎳、鋅、錫、銀、金，磷化處理或環氧樹脂等處理來減慢其氧化速度．

應用：
  • 省油裝置
  • 磁性吸座
  • 發電機
  • 馬達
  • 感應器
  • 楊聲器等．
特點：
  • 高抗退磁性（超強磁力）
  • 高成本／性能比例（免開模）
  • 一般温度穩定性
  • 不適合于高工作温度環境
  • 可以控制最小公差
永久磁鐵磁石特性說明：
特性 殘留磁束密度
(Br)		 保磁力
(bHc)		 內保磁力
(iHc)		 最大磁能積
(BH max)		 最大工作溫度
等級 KGs mT KOe KA/m KOe KA/m MGOe KJ/m3 ℃
N35 11.7~12.2 1170~1220 ≧10.9 ≧868 ≧12.00 ≧955 33~36 263~287 < 80
N38 12.2~12.6 1220~1260 ≧11.3 ≧899 ≧12.00 ≧955 36~38 287~310 < 80
N40 12.5~12.8 1250~1280 ≧11.4 ≧907 ≧12.00 ≧955 38~40 302~326 < 80
N42 12.8~13.2 1280~1320 ≧11.5 ≧915 ≧12.00 ≧955 40~42 318~342 < 80
N45 13.2~13.8 1320~1380 ≧11.6 ≧923 ≧12.00 ≧955 43~46 342~366 < 80
N48 13.8~14.2 1380~1420 ≧10.5 ≧836 ≧12.00 ≧955 46~49 366~390 < 80
N50 14.0~14.5 1400~1450 ≧10.0 ≧796 ≧11.00 ≧876 48~51 382~406 < 60
N52 14.3~14.8 1430~1480 ≧10.0 ≧796 ≧11.00 ≧876 50~53 398~422 < 60
N33M 11.3~11.7 1130~1170 ≧10.5 ≧836 ≧14.00 ≧1114 31~33 247~263 < 100
N35M 11.7~12.1 1170~1210 ≧10.9 ≧868 ≧14.00 ≧1114 33~36 263~287 < 100
N38M 12.2~12.6 1220~1260 ≧11.3 ≧899 ≧14.00 ≧1114 36~39 287~310 < 100
N40M 12.5~12.8 1250~1280 ≧11.6 ≧923 ≧14.00 ≧1114 38~40 302~326 < 100
N42M 12.8~13.2 1280~1320 ≧12.0 ≧955 ≧14.00 ≧1114 40~43 318~342 < 100
N45M 13.2~13.8 1320~1380 ≧12.5 ≧995 ≧14.00 ≧1114 43~46 342~366 < 100
N48M 13.6~14.3 1360~1430 ≧12.9 ≧1027 ≧14.00 ≧1114 46~49 366~390 < 100
N50M 14.0~14.5 1400~1450 ≧13.0 ≧1033 ≧14.00 ≧1114 48~51 382~406 < 100
N35H 11.7~12.2 1170~1220 ≧10.9 ≧868 ≧17.00 ≧1353 33~36 263~287 < 120
N38H 12.2~12.5 1220~1250 ≧11.3 ≧899 ≧17.00 ≧1353 36~39 287~310 < 120
N40H 12.5~12.8 1250~1280 ≧11.6 ≧923 ≧17.00 ≧1353 38~41 302~326 < 120
N42H 12.8~13.2 1280~1320 ≧12.0 ≧955 ≧17.00 ≧1353 40~43 318~342 < 120
N45H 13.2~13.6 1320~1360 ≧12.1 ≧963 ≧17.00 ≧1353 43~46 342~366 < 120
N48H 13.7~14.3 1370~1430 ≧12.5 ≧995 ≧17.00 ≧1353 46~49 366~390 < 120
N35SH 11.7~12.2 1170~1220 ≧11.0 ≧876 ≧20.00 ≧1592 33~36 263~287 < 150
N38SH 12.2~12.5 1220~1250 ≧11.4 ≧907 ≧20.00 ≧1595 36~39 287~310 < 150
N40SH 12.5~12.8 1240~1280 ≧11.8 ≧939 ≧20.00 ≧1592 38~41 302~326 < 150
N42SH 12.8~13.2 1280~1320 ≧12.4 ≧987 ≧20.00 ≧1592 40~43 318~342 < 150
N45SH 13.2~13.8 1320~1380 ≧12.6 ≧1003 ≧20.00 ≧1592 43~46 342~366 < 150
N28UH 10.2~10.8 1020~1080 ≧9.6 ≧764 ≧25.00 ≧1990 26~29 207~231 < 180
N30UH 10.8~11.3 1080~1130 ≧10.2 ≧812 ≧25.00 ≧1990 28~31 223~247 < 180
N33UH 11.3~11.7 1130~1170 ≧10.7 ≧852 ≧25.00 ≧1990 31~34 247~271 < 180
N35UH 11.8~12.2 1180~1220 ≧10..8 ≧860 ≧25.00 ≧1990 33~36 263~287 < 180
N38UH 12.2~12.5 1220~1250 ≧11.0 ≧876 ≧25.00 ≧1990 36~38 287~310 < 180
N40UH 12.5~12.8 1240~1280 ≧11.3 ≧899 ≧25.00 ≧1990 38~41 302~326 < 180
N28EH 10.4~10.9 1040~1090 ≧9.8 ≧780 ≧30.00 ≧2388 26~29 207~231 < 200
N30EH 10.8~11.3 1080~1130 ≧10.2 ≧812 ≧30.00 ≧2388 28~31 223~247 < 200
N33EH 11.3~11.7 1130~1170 ≧10.5 ≧836 ≧30.00 ≧2388 31~34 247~271 < 200
N35EH 11.7~12.2 1170~1220 ≧11.0 ≧876 ≧30.00 ≧2388 33~36 263~287 < 200
N38EH 12.2~12.5 1220~1250 ≧11.3 ≧899 ≧30.00 ≧2388 36~39 287~310 < 200
N28AH 10.4~10.9 1040~1090 ≧9.9 ≧787 ≧33.00 ≧2624 26~29 207~231 < 230
N30AH 10.8~11.3 1080~1130 ≧10.3 ≧819 ≧33.00 ≧2624 28~31 223~247 < 230
N33AH 11.3~11.7 1130~1170 ≧10.6 ≧843 ≧33.00 ≧2624 31~34 247~271 < 230