N35-N52 Strong Neodymium Rare Earth Magnet Permanent Block Magnet
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Product Highlights
- Wide Grade Range: Available in N30H to N52 grades including M, H, SH, UH, EH, and AH variants.
- Nickel Coating: Standard Ni coating ensures durability and corrosion resistance for industrial use.
- Block Shape: Precise block geometry suitable for electronic products, speakers, and motors.
- OEM & ODM Services: Full OEM and ODM customization services available for tailored magnetic solutions.
- Precision Tolerance: Manufacturing tolerance maintained at +/-0.1mm for high-precision applications.
- 11 R&D Engineers: Dedicated team of 11 engineers supports product development and technical innovation.
- Flexible Payment Terms: Accepts LC and T/T payment methods for secure international transactions.
Product Attributes
- Customization
- Available
- Application
- Electronic Products, Speaker Magnet, Industrial Magnet, Motor Magnet
- Shape
- Block
- Model NO.
- N35-N52
- Coating
- Nickel
- Grade
- N30H-48H
- Tolerance
- +/-0.1
- Density
- 7.4~7.6
- Curie Temperature
- 310~380
- Flexural Strenth
- 25kg/mm
- Recoil Permeabilty
- 1.05
- Vickers Hardness
- 620hv
- Transport Package
- as Customer Required
- Specification
- Customized
- Trademark
- RCMAG
- Origin
- China
- HS Code
- 85051110
- Production Capacity
- 1000 Ton/Year
Product Images of N35-N52 Strong Neodymium Rare Earth Magnet Permanent Block Magnet
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Product Description


| Magnetic and Physical Properties of Sintered NdFeB Magnet | ||||||||||
| Grades | Remanence | Coercive Force | Intrinsic Coercivity | Maximum Energy Product | Curie Temp. | Temp. Coefficient | ||||
| Br | Hcb | Hcj | (BH)max | TC | TW | |||||
| T | KGs | KA/m | KOe | KA/m | Koe | KJ/m3 | MGOe | ºC | ºC | |
| N33 | 1.13-1.18 | 11.3-11.8 | ≥836 | ≥10.5 | ≥955 | ≥12 | 247-263 | 31-33 | 310 | ≤80 |
| N35 | 1.18-1.23 | 11.8-12.3 | ≥868 | ≥10.9 | ≥955 | ≥12 | 263-287 | 33-36 | 310 | ≤80 |
| N38 | 1.22-1.28 | 12.2-12.8 | ≥899 | ≥11.3 | ≥955 | ≥12 | 287-310 | 36-39 | 310 | ≤80 |
| N40 | 1.26-1.31 | 12.6-13.1 | ≥923 | ≥11.6 | ≥955 | ≥12 | 302-326 | 38-41 | 310 | ≤80 |
| N42 | 1.28-1.34 | 12.8-13.4 | ≥923 | ≥11.6 | ≥955 | ≥12 | 318-342 | 40-43 | 310 | ≤80 |
| N45 | 1.34-1.39 | 13.4-13.9 | ≥876 | ≥11.0 | ≥955 | ≥12 | 342-366 | 43-46 | 310 | ≤80 |
| N48 | 1.38-1.42 | 13.8-14.2 | ≥836 | ≥10.5 | ≥876 | ≥11 | 358-390 | 45-48 | 310 | ≤80 |
| N50 | 1.40-1.46 | 14.0-14.6 | ≥836 | ≥10.5 | ≥876 | ≥11 | 374-406 | 47-51 | 310 | ≤80 |
| N35M | 1.18-1.23 | 11.8-12.3 | ≥868 | ≥10.9 | ≥1114 | ≥14 | 263-287 | 33-36 | 320 | ≤100 |
| N38M | 1.22-1.28 | 12.2-12.8 | ≥899 | ≥11.3 | ≥1114 | ≥14 | 287-310 | 36-39 | 320 | ≤100 |
| N40M | 1.26-1.31 | 12.6-13.1 | ≥923 | ≥11.6 | ≥1114 | ≥14 | 302-326 | 38-41 | 320 | ≤100 |
| N42M | 1.28-1.34 | 12.8-13.4 | ≥923 | ≥11.6 | ≥1114 | ≥14 | 318-342 | 40-43 | 320 | ≤100 |
| N45M | 1.34-1.39 | 13.4-13.9 | ≥876 | ≥11.0 | ≥1114 | ≥14 | 342-366 | 43-46 | 320 | ≤100 |
| N33H | 1.14-1.19 | 11.4-11.9 | ≥836 | ≥10.5 | ≥1353 | ≥17 | 247-270 | 31-34 | 330 | ≤120 |
| N35H | 1.18-1.23 | 11.8-12.3 | ≥868 | ≥10.9 | ≥1353 | ≥17 | 263-287 | 33-36 | 330 | ≤120 |
| N38H | 1.22-1.28 | 12.2-12.8 | ≥899 | ≥11.3 | ≥1353 | ≥17 | 287-310 | 36-39 | 330 | ≤120 |
| N40H | 1.26-1.31 | 12.6-13.1 | ≥923 | ≥11.6 | ≥1353 | ≥17 | 302-326 | 38-41 | 330 | ≤120 |
| N42H | 1.28-1.34 | 12.8-13.4 | ≥923 | ≥11.6 | ≥1353 | ≥17 | 318-342 | 40-43 | 330 | ≤120 |
| N30SH | 1.08-1.13 | 10.8-11.3 | ≥810 | ≥10.2 | ≥1592 | ≥20 | 223-247 | 28-31 | 340 | ≤150 |
| N33SH | 1.14-1.19 | 11.4-11.9 | ≥836 | ≥10.5 | ≥1592 | ≥20 | 247-270 | 31-34 | 340 | ≤150 |
| N35SH | 1.18-1.23 | 11.8-12.3 | ≥868 | ≥10.9 | ≥1592 | ≥20 | 263-287 | 33-36 | 340 | ≤150 |
| N38SH | 1.22-1.28 | 12.2-12.8 | ≥899 | ≥11.3 | ≥1592 | ≥20 | 287-310 | 36-39 | 340 | ≤150 |
| N40SH | 1.26-1.31 | 12.6-13.1 | ≥923 | ≥11.6 | ≥1592 | ≥20 | 302-326 | 38-41 | 340 | ≤150 |
| N28UH | 1.03-1.09 | 10.3-10.9 | ≥764 | ≥9.60 | ≥1990 | ≥25 | 207-231 | 26-29 | 350 | ≤180 |
| N30UH | 1.09-1.14 | 10.9-11.4 | ≥812 | ≥10.2 | ≥1990 | ≥25 | 223-247 | 28-31 | 350 | ≤180 |
| N33UH | 1.13-1.17 | 11.3-11.7 | ≥852 | ≥10.7 | ≥1990 | ≥25 | 247-263 | 31-33 | 350 | ≤180 |
| N35UH | 1.17-1.24 | 11.7-12.4 | ≥868 | ≥10.9 | ≥1990 | ≥25 | 263-295 | 33-37 | 350 | ≤180 |
| N28EH | 1.03-1.09 | 10.3-10.9 | ≥780 | ≥9.80 | ≥2388 | ≥30 | 207-231 | 26-29 | 380 | ≤200 |
| N30EH | 1.08-1.13 | 10.8-11.3 | ≥812 | ≥10.2 | ≥2388 | ≥30 | 223-247 | 28-31 | 380 | ≤200 |
| N33EH | 1.14-1.21 | 11.4-12.1 | ≥852 | ≥10.7 | ≥2388 | ≥30 | 247-279 | 31-35 | 380 | ≤200 |
| N35EH | 1.17-1.24 | 11.7-12.4 | ≥868 | ≥10.9 | ≥2388 | ≥30 | 263-295 | 33-37 | 380 | ≤200 |
| N38EH | 1.22-1.29 | 12.2-12.9 | ≥915 | ≥11.5 | ≥2388 | ≥30 | 287-318 | 36-40 | 380 | ≤200 |
| N30AH | 1.08-1.15 | 10.8-11.5 | ≥804 | ≥10.1 | ≥2786 | ≥35 | 223-255 | 28-32 | 380 | ≤230 |
| N33AH | 1.14-1.21 | 11.4-12.1 | ≥852 | ≥10.7 | ≥2786 | ≥35 | 247-279 | 31-35 | 380 | ≤230 |








About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASI223184". Items marked "" are certified.
Company Profile
Zhejiang Rongxin Magnet Co., Ltd. (RCMAG) is a high-tech permanent magnet manufacturer in Huzhou China. We are specialized in producting NdFeB magnet & AlNiCo magnet, distributes SmCo magnet, Bounded NdFeB magnet, Ferrite magnet and related assemblies. The annual production capacity is 3400 tons: 2000 tons for NdFeB, 1200 tons for AlNiCo and 200 tons for SmCo. It is one of the largest enterprises in the permanent magnet magnetic material industries. Our skillful sales team is in the branch named Hangzhou Zishan Import & Export Trade Co., Ltd.
We warmly welcome all friends to visit our company and establish business relationship. Thanks!
Hangzhou Rongchang Magnet Co., Ltd started to manufacture AlNiCo magnet. The main grade is AlNiCo2, AlNiCo3, AlNiCo5, AlNiCo6.
Hangzhou Rongjia Magnet Technology Co., Ltd. (RJMAG) was constructed in 2009. It produces NdFeB magnet. The annual output is up to 1000 Tons.
There are 170 staff at present. ISO9001: 2008, TS16949 and RoHS have been approved. Our products are widely used such as magnetic chuck, magnetic separator, sensors, motor, UAV, Electric car, radar, meters, speaker, guitar, toy and hardware tools. The products are widely exported to globe. Especially Europe, North American and South-east Asia.
We have a series of automatical machines to strictly control quality. A professional and hard-working international sales team do the best to keep nice business relationships with a large number of worthy clients in the global market. We warmly welcome the friends to visit our factory and establish business relationship.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- 528# Fuqian Street, Industrial Park, Si 'an Town, Changxing County, Hangzhou, Zhejiang, China
-
Registered Capital
- 20,000,000 RMB
-
Terms of Payment
- LC, T/T
-
International Commercial Terms(Incoterms)
- FOB, EXW
-
Average Lead Time
-
Peak Season Lead Time: 1-3 months
Off Season Lead Time: one month -
Nearest Port
- Shanghai Port, Ningbo Port
Our Production Capability & Technical Expertise
- Main Products
- NdFeB Magnet, AlNiCo Magnet, SmCo Magnet
-
Production Machines
- Materials Mixing Machine, Airflow Milling Machine, Grinding Machine, Magnet Automatic Inspection Machine, Automatic Measuring Instrument for Magnetization Characteristics, Magnetizing Apparatus, Cutting Machine, Multi-wire Cutting Machine, Vacuum Sintering Furnace, Automatic Magnetic Field Press, Isostatic Pressing Machine, Stripping Machine, Projector, Automatic Magnetizing Flux Testing Machine, Stick Put Oneself in Machine, Automatic Magnetizing Apparatus, Magnetizing Apparatus, Chamber Electric Furnace, Well Type Resistance Furnace, electric Dry Oven, Core Shooting Machine, Ultrasonic Cleaners, Smelting Furnace
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 11 people
Our Industry Experience & Global Business Record
- Export Year
- 2019-06-21
-
Main Markets
- Domestic
-
Number of Foreign Trading Staff
- 6
-
Overseas Agent/Branch
- No
FAQ
- What grades are available?
- We offer a wide range of grades from N30H to N52, including M, H, SH, UH, EH, and AH series.
- What is the coating material?
- The standard coating for these magnets is Nickel, providing excellent corrosion resistance.
- Can you customize the shape and size?
- Yes, we provide OEM and ODM services with a precision tolerance of +/-0.1mm.
- What are the payment terms?
- We accept LC and T/T as our standard terms of payment for all orders.
- What is the lead time for production?
- Lead time is one month during off-peak season and 1-3 months during peak season.
- Where is the factory located?
- Our factory is located in Changxing County, Hangzhou, Zhejiang, China.
- What are the main applications?
- These magnets are primarily used in electronic products, speakers, industrial equipment, and motors.
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