Cheap N30 N33 N35 Neodymium Magnets
1. Material: Sintered neodymium magnet
2. Shape: Block / Rectangle / Disc / Round
3. Dimensions: As required / Customized
4. Grade: N30 N33 N35
5. Coating: Nickel,Zinc,Epoxy and etc.
6. Magnetized: Through thickness,width,length
7. Max working Temp.: 80℃-220℃
8. Tolerance: +/-0.05mm or +/-0.1mm
Sintered neodymium magnets greatly expand the applications of permanent magnets.They are widely
used in the fields of transportation,energy,communications,home
appliances,machinery and medical equipment and have become indispensible
function materials in manufacturing and daily life.
Block NdFeB magnets are used in applications such as medical,motors,lighting system,sensor,holding application,consumer electronics,consumer products,automotive and etc.
Avaliable sizes and tolerance of block NdFeB magnet
Relying on experienced production team and strong maching capability,most sizes of neodymium magnet can be produced with very high quality and precision,and the tolerance can be controlled within +/-0.05mm or +/-0.1mm.
The difference between different grade of sintered neodymium magnet
Basis on different temperature resistrance,the neodymium magnet are divided into N,M,H,SH,UH,EH,AH series,and the corresponding maximum operating temperature is 80℃,100℃,120℃,150℃,180℃,200℃,220℃.
In the same serires,the higher the grade of NdFeB magnet,the more magnetism it is.For example,in N series,N52 grade have more magnetic power than N35 grade,and the N55 grade is the strongest one.
For initial projects,we are happy to provide magnetic technology support and produce magnet samples according to your requirements for prototyping or testing needs.
Check the grade/properities of sintered neodymium magnet.
Surface treatment of sintered neodymium magnet
For general use,zinc and nickel plating are most common,and the salt spray test can reach 24 hours to 48 hours.
Epoxy or NiCu+Epoxy Coating have a better corrosion resistance,the salt spray test can reach 72 hours.
Block NdFeB magnets are used in applications such as medical,motors,lighting system,sensor,holding application,consumer electronics,consumer products,automotive and etc.
Avaliable sizes and tolerance of block NdFeB magnet
Relying on experienced production team and strong maching capability,most sizes of neodymium magnet can be produced with very high quality and precision,and the tolerance can be controlled within +/-0.05mm or +/-0.1mm.
Please see below available sizes of block neodymium magnet.
| Length | Width | Thickness |
| 1mm ≦ L ≦ 240mm | 1mm ≦ L ≦ 100mm | 1mm ≦ L ≦ 80mm |
The difference between different grade of sintered neodymium magnet
Basis on different temperature resistrance,the neodymium magnet are divided into N,M,H,SH,UH,EH,AH series,and the corresponding maximum operating temperature is 80℃,100℃,120℃,150℃,180℃,200℃,220℃.
In the same serires,the higher the grade of NdFeB magnet,the more magnetism it is.For example,in N series,N52 grade have more magnetic power than N35 grade,and the N55 grade is the strongest one.
For initial projects,we are happy to provide magnetic technology support and produce magnet samples according to your requirements for prototyping or testing needs.
Check the grade/properities of sintered neodymium magnet.
Surface treatment of sintered neodymium magnet
For general use,zinc and nickel plating are most common,and the salt spray test can reach 24 hours to 48 hours.
Epoxy or NiCu+Epoxy Coating have a better corrosion resistance,the salt spray test can reach 72 hours.
| Coating Type | Thickness | Clors | Resistance | ||
| PCT/HAST | SST | Temp.& Humi. | |||
| Zn (White Zn) | ≥5 μm | Bright Blue | —— | ★★ | ★★★ |
| Zn (Color-plated Zn) | ≥5 μm | Shining Color | —— | ★★★ | ★★★★ |
| Ni+Cu+N | ≥15 μm | Silver | ★★★ | ★★★★ | ★★★★★ |
| Ni+Cu+Ni+Cr | ≥15 μm | Silver | ★★★★ | ★★★★ | ★★★★★ |
| Ni+Cu+Ni+Sn | ≥15 μm | Silver | ★★★★ | ★★★★ | ★★★★★ |
| Chemic Ni | ≥5 μm | Silver | ★★★★ | ★★★★★ | ★★★★★ |
| Epoxy | ≥12 μm | Black | ★★★ | ★★★★★ | ★★★★★ |
| NiCu+Epoxy | ≥15 μm | Black | ★★★ | ★★★★★ | ★★★★★ |
| Passivated | ≤2 μm | Silver Grey | —— | —— | ★★★ |
| Phosphated | ≤2 μm | Silver Grey | —— | —— | ★★★ |
Magnetzation direction of block NdFeB magnet
Most
of block neodymium magnet are magnetized through thickness.But there
are some applications that require magnetization of its length or width
direction.If you have special requirements for magnetization
direction,please do not hesitate to let us know.
 |
 |
 |
| Magnetized Through Thickness | Magnetized Through Width | Magnetized Through Length |
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Mechanical Physical Property Of Sintered NdFeB Magnet
| Parameter | Unit | Reference Value | |
| Vickers hardness | Hv | ≥550 | |
| Density | g/cm3 | ≥7.50 | |
| μr Recal Penmeability | ＼ | 1.05 | |
| Tc Curie point | ℃ | 312～380 | |
| Specific resistance | μΩ·cm | 150 | |
| Bending strength | MPa | 250 | |
| Compressive strength | MPa | 1000～1100 | |
| Compressive strength | Thermal expansion | ℃－1 | - (1～3)×10－6K |
| （⊥Thermal expansion） | (⊥) | ||
| Compressive strength | Thermal expansion | ℃－1 | (3～4)×10－6K |
| （∥Thermal expansion） | (∥) | ||
Demagnetization Curves Of Sintered NdFeb Magnet (B-H Curves)
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| N52 | N50M |
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| N48SH | N45UH |
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Tel ：+86-769-88015513 , Zip Code: 523000
Mobile ：+86-13266004656（Jennifer Lin）
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E-mail:LZ@junhuimagnet.com
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