Can a magnet that has lost its magnetism be re-magnetized

Provided that the material has not been damaged by extreme heat. the magnet can be re-magnetized back to its original strength.

Can I make a magnet that I already have any stronger?

Once a magnet is fully magnetized, it cannot be made any stronger-it is'saturated.' in that sense, magnets are like buckets of water; once they are full. they can't get any 'fuller.'

Can you supply magnets with one pole on the outside and one on the inside?

Ring magnets can be magnetized this way and they are referred to as radially magnetized.

N42 Magnetic Disc Permanent Neodymium Small Round Magnet

Name: N42 Magnetic Disc Permanent Neodymium Small Round Magnet
Brand: Great Magtech (Xiamen) Electric Co., Ltd.
SKU: 944611705

Fujian, ChinaGreat Magtech (Xiamen) Electric Co., Ltd.

US$2.50

100-999 Pieces

US$2.20

1,000+ Pieces

Sample price:US$30.00/piece.Request sample

Product profile

Customization

Available

Application

Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet, Generator NdFeB Magnet

Shape

Ring

Coating

Nickel

Grade

N40sh NdFeB Magnet

Product Name of NdFeB Magnet

Sintered Strong Permanent N40sh Ring NdFeB Magnet

Envrionment Management System

ISO9001/14001

Certificate of NdFeB Magnet

CE/RoHS/SGS

Tolerance of NdFeB Magnet

+/- 0.05mm

Model Number of NdFeB Magnet

Gme-Ring

Magnetization Direction of NdFeB Magnet

Axial/Radial/Multi-Poles Magnetization

Working Temp. of NdFeB Magnet

80-200 Degree Centigrade

Transportation of NdFeB Magnet

by Sea, by Air, by Express

Payment

T/T, Paypal, Western Union

Lead Time of NdFeB Magnet

7-25days

Transport Package

Carton, Wood Case, Anti-Magnetized Package

Specification

As Client's Request

Trademark

GME

Origin

Zhejiang/Xiamen

HS Code

8505111000

Production Capacity

3000 Tons

Key features

Wide Grade Range: Available in N35-N54 grades including M, H, SH, UH, EH, and AH series.

Customizable Shapes: Offering discs, cylinders, blocks, rings, spheres, arcs, and custom shapes.

Multiple Coating Options: Coatings include Nickel, Zinc, NiCuNi, Gold, Silver, Copper, and Epoxy.

Flexible Magnetization: Supports axial, radial, multi-poles, and other customized magnetization directions.

OEM/ODM Services: Full OEM and ODM customization services available for tailored requirements.

Fast Lead Time: Standard lead time ranges from 5 to 25 days depending on stock and order size.

Global Shipping: Shipping via courier (TNT, DHL, FedEx, UPS), air, or sea with tracking available.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceCooperated with Fortune 500Multi-language Pioneer

Great Magtech (Xiamen) Electric Co., Ltd.

Fujian, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Flexible customization CertifiedExport Year: 9 Years CertifiedNearest Port: Ningbo Port, Xiamen Port, Shanghai PortAverage Response Time: ≤8.03h

AI-Powered supplier vetting

SummaryThe supplier demonstrates a strong emphasis on quality and customer satisfaction, with a focus on flexible customization and significant export activities. However, it lacks overseas infrastructure like warehouses or showrooms and does not provide overseas services through agents. Despite having no SDK for R&D, the supplier offers ODM and OEM services and has introduced new products in the past year. Financial and sustainable development capabilities are supported by certifications and systems like ERP, though specific details on financial health are sparse.

CertificationsThe supplier holds certifications such as RoHS and CE, indicating compliance with relevant industry standards.

After-Sales capabilityThe supplier follows formal procedures for service capability and has corrective mechanisms in place, with acceptable payment terms and a clear lead time structure.

R&D capabilityThe supplier offers ODM services, introduced new products recently, and emphasizes innovation in its mission, although it lacks SDK availability.

Production capacityThe supplier has a substantial annual production capacity for various magnets, indicating strong production capabilities.

Customization capabilityThe supplier provides flexible customization and ODM services, demonstrating a strong capability for tailored product development.

Product Q&A

Q:How long is your lead time?

Generally it is 5-10 days if the goods or materials are in stock. or it is 20-25days for new production, it is according to the order quantity.

Q:What is your MOQ?

We have no strict MOQ, if we can do, we will try our best to cooperate; if any questions as small quantity, we will be open to communicate with our customers for a better solution.

Q:What are your terms of payment?

Payment<=10,000/sd,100% in advance, paymcnt>=10,000usd,30%t/t in advance, balance before shipment.

Q:Will magnets lose their power over time?

Modern magnet materials do lose a very small fraction of their magnetism over time. for samarium cobalt materials, for example, this has been shown to be less than 1% over a period of ten years.

Q:What might affect the strength of a magnet?

The factors can affect a magnet's strength: heat radiation strong electrical currents in close proximity to the magnets other magnets in close proximity to the magnet(Neodymium magnets will corrode in high humidity environments unless they have a protective coat-ing-) shock and vibration do not affect modern magnet materials unless sufficient to physically damage the material.