High Temperature Stability Block Magnets Grade L42sht 
High Temperature Stability Block Magnets Grade L42sht 
High Temperature Stability Block Magnets Grade L42sht 

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High Temperature Stability Block Magnets Grade L42sht 

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Product name:High temperature stability block magnets grade L42SHT
Model No:TCND-LT501
High temperature stability block magnets grade L42SHT
The Magnetic Properties of L42SHTHigh Temperature Resistance Neodymium Magnets
Residual Induction - Br = 12.8 - 13.2 kGs / 1,280 - 1,320 mT
Coercive Force - Hcb ≥ 12.4 kOe / ≥ 987 kA/m
Intrinsic Coercive - Hcj ≥ 20 kOe / ≥ 1,592 kA/m
Maximum Energy Product - (BH)max = 40 - 43 MGOe / 318 - 342 kJ/m3
Maximum Working Temperature - Tw = 150°
Some other magnetic properties or our L-T grades magnets,Grade L38SHT,L42SHT,L35UHT,L38EHT... please refer to our Magnetic properties of Sintered NdFeB magnets:
Magnetic properties of Sintered NdFeB magnets:
Grade Remanence Coercive Force Intrinsic Coercive Force Max. energy product Max.
Operating
Temperature
Br Hcb Hcj (BH ) Tw
max
mT kA/m kA/m kJ/m3
(kGs) (kOe) (kOe) (MGOe)
N35 1170-1220 ≥868 ≥955 263-287 80 °C
(11.7-12.2) (≥ 10.9) (≥ 12) (33-36)
N38 1220-1250 ≥899 ≥955 287-310 80 °C
(12.2-12.5) (≥ 11.3) (≥ 12) (36-39)
N40 1250-1280 ≥907 ≥955 302-326 80 °C
(12.5-12.8) (≥ 11.4) (≥ 12) (38-41)
N42 1280-1320 ≥915 ≥955 318-342 80 °C
(12.8-13.2) (≥ 11.5) (≥ 12) (40-43)
N45 1320-1380 ≥923 ≥955 342-366 80 °C
(13.2-13.8) (≥ 11.6) (≥ 12) (43-46)
N48 1380-1420 ≥923 ≥876 366-390 80 °C
(13.8-14.2) (≥ 11.6) (≥ 12) (46-49)
N50 1400-1450 ≥796 ≥876 382-406 80 °C
(14.0-14.5) (≥ 10.0) (≥ 11) (48-51)
N52 1430-1480 ≥796 ≥876 398-422 60°C
(14.3-14.8) (≥ 10.0) (≥ 11) (50-53)
35M 1170-1220 ≥868 ≥1114 263-287 100 °C
(11.7-12.2) (≥ 10.9) (≥ 14) (33-36)
38M 1220-1250 ≥899 ≥1114 287-310 100 °C
(12.2-12.5) (≥ 11.3) (≥ 14) (36-39)
40M 1250-1280 ≥923 ≥1114 302-326 100 °C
(12.5-12.8) (≥ 11.6) (≥ 14) (38-41)
42M 1280-1320 ≥955 ≥1114 318-342 100 °C
(12.8-13.2) (≥ 12.0) (≥ 14) (40-43)
45M 1320-1380 ≥995 ≥1114 342-366 100 °C
(13.2-13.8) (≥ 12.5) (≥ 14) (43-46)
48M 1370-1430 ≥1027 ≥1114 366-390 100 °C
(13.7-14.3) (≥ 12.9) (≥ 14) (46-49)
50M 1400-1450 ≥ 1033 ≥1114 382-406 100 °C
(14.0-14.5) (≥ 13.0) (≥ 14) (48-51)
35H 1170-1220 ≥868 ≥1353 263-287 120 °C
(11.7-12.2) (≥ 10.9) (≥ 17) (33-36)
38H 1220-1250 ≥899 ≥1353 287-310 120 °C
(12.2-12.5) (≥ 11.3) (≥ 17) (36-39)
40H 1250-1280 ≥923 ≥1353 302-326 120 °C
(12.5-12.8) (≥ 11.6) (≥ 17) (38-41)
42H 1280-1320 ≥955 ≥1353 318-342 120 °C
(12.8-13.2) (≥ 12.0) (≥ 17) (40-43)
45H 1320-1360 ≥963 ≥1353 342-366 120 °C
(13.2-13.6) (≥ 12.1) (≥ 17) (43-46)
48H 1370-1430 ≥955 ≥1353 366-390 120 °C
(13.7-14.3) (≥ 12.5) (≥ 17) (46-49)
35SH 1170-1220 ≥876 ≥1592 263-287 150 °C
(11.7-12.2) (≥ 11.0) (≥ 20) (33-36)
38SH 1220-1250 ≥907 ≥1592 287-310 150 °C
(12.2-12.5) (≥ 11.4) (≥ 20) (36-39)
40SH 1240-1280 ≥939 ≥1592 302-326 150 °C
(12.5-12.8) (≥ 11.8) (≥ 20) (38-41)
42SH 1280-1320 ≥987 ≥1592 318-342 150 °C
(12.8-13.2) (≥ 12.4) (≥ 20) (40-43)
45SH 1320-1380 ≥ 1003 ≥1592 342-366 150 °C
(13.2-13.8) (≥ 12.6) (≥ 20) (43-46)
28UH 1040-1080 ≥764 ≥1990 207-231 180 °C
(10.4-10.8) (≥ 9.6) (≥ 25) (26-29)
30UH 1080-1130 ≥812 ≥1990 223-247 180 °C
(10.8-11.3) (≥ 10.2) (≥ 25) (28-31)
33UH 1130-1170 ≥852 ≥1990 247-271 180 °C
(11.3-11.7) (≥ 10.7) (≥ 25) (31-34)
35UH 1180-1220 ≥860 ≥1990 263-287 180 °C
(11.8-12.2) (≥ 10.8) (≥ 25) (33-36)
38UH 1220-1250 ≥876 ≥1990 287-310 180 °C
(12.2-12.5) (≥ 11.0) (≥ 25) (36-39)
40UH 1250-1280 ≥ 899 ≥1990 302-326 180 °C
(12.5-12.8) (≥ 11.3) (≥ 25) (38-41)
42UH 1280-1320 ≥ 899 ≥1990 318-342 180 °C
(12.8-13.2) (≥ 11.3) (≥ 25) (40-43)
28EH 1040-1080 ≥780 ≥2388 207-231 200 °C
(10.4-10.8) (≥ 9.8) (≥ 30) (26-29)
30EH 1080-1130 ≥812 ≥2388 223-247 200 °C
(10.8-11.3) (≥ 10.2) (≥ 30) (28-31)
33EH 1130-1170 ≥876 ≥2388 247-271 200 °C
(11.3-11.7) (≥ 10.5) (≥ 30) (31-34)
35EH 1170-1220 ≥876 ≥2388 263-287 200 °C
(11.7-12.2) (≥ 11.0) (≥ 30) (33-36)
38EH 1220-1250 ≥899 ≥2388 287-310 200 °C
(12.2-12.5) (≥ 11.3) (≥ 30) (36-39)
40EH 1250-1280 ≥899 ≥2388 302-326 200 °C
(12.5-12.8) (≥ 11.3) (≥ 30) (38-41)
28AH 1040-1080 ≥787 ≥2624 207-231 230 °C
(10.4-10.8) (≥ 9.9) (≥ 33) (26-29)
30AH (1080-1130) ≥819 ≥2624 223-247 230 °C
(10.8-11.3) (≥ 10.3) (≥ 33) (28-31)
33AH 1130-1170 ≥843 ≥2624 247-271 230 °C
(11.3-11.7) (≥ 10.6) (≥ 33) (31-34)
35AH (1170-1220) ≥ 876 ≥2624 263-287 230 °C
(11.7-12.2) (≥ 11.0) (≥ 33) (33-36)
38AH 1220-1250 ≥ 899 ≥2624 287-310 230 °C
(12.2-12.5) (≥ 11.3) (≥ 33) (36-39)

1.The NdFeB magnet properties change as the temperature changes. Ordinarily, when the temperature is up, the magnet properties are down. We use αBr, βHcj measuring the temperature stability of NdFeB magnet.
       αBr: Reversible Temperature Coefficient of Br,
                
                Br(20): Br at 20 ,           Br(T): Br at T
       βHcj: Reversible Temperature Coefficient of Hcj
               
               Hcj(20): Hcj at 20 ,            Hcj(T): Hcj at T
Usually, the industrial standards ofβHcj: is over -0.7%/℃, while theβHcj: of our developed magnet is less than -0.4%/℃, it helps our magnets with excellent temperature stability.
2. Application which needs the high temperature stability
High temperature stability magnets are mainly used in car motors, EPS, brake motors, servo motors and other permanent magnet motors.
3. Correlative temperature coefficient data
Grade
Serial NO.
Conventional Formula
T-Series
L-TSeries
αBr
-0.11~-0.128%/℃
-0.1-0.11%/℃
-0.09~-0.1%/℃
βHcj
-0.6~-0.7%/℃
-0.55~-0.6%/℃
-0.4~-0.55%/℃
Notes: TheαBr, βHcj is relative to aspect ratio, square degree chart(BH curve) etc. Higher the aspect ratio is, higher the working temperature can be. Our recommended aspect ratio is over 0.5.
The data of a certain grades, please feel free to contact us. Ordinarily, if you have the requests on αBr, βHcj, please inform the details while placing the order. Sample test is needed before mass production.
For more details, please consult our engineer.

The Physical properties of sintered NdFeB material
Physical properties of sintered NdFeB material
Properties Unit Standard
Curiepoint 310~380
Reversible temperature coefficientof Br %/℃ -0.09~-0.13
Reversible temperature coefficientof Hcj %/℃ 0.4~0.7
Maximumworking temperature 80230
Density g /cm3 ≥7.47.8
Vickershardness HV 550650
Bendingstrength MPa 250
Tensilestrength MPa 80
Compressivestrength MPa 1050
Specificresistance µΩ·cm 150
Thermalconductivity W/(m℃) 68
Thermal expansion 10-6 /℃ 5(parallel to the orientation)
1.5(Perpendicularto the orientation)

Our advantages: 1. Original factory with professional technical and servers.
                            2. Strict quality control systems under certification TS16949 and ISO 9001
                            3. Latest facilities to support R&D, quality control, process control, final product inspection
                            4. Very low prices due to our production well controlled , process optimization,
                            5, Fast lead time
                            6. Motto: partnership with all customers

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