Magnet knowledge & FAQ – Everything about magnets from Strong Magnets GmbH
Welcome to Strong Magnets GmbH – your expert for powerful neodymium magnets in Germany. On this site, you'll find comprehensive knowledge, frequently asked questions, and in-depth insights into magnets – for hobby, industry, technology, and everyday use.
What are neodymium magnets?
Neodymium magnets, also called NdFeB magnets, belong to the rare earth family and consist of neodymium, iron, and boron. They are among the strongest permanent magnets in the world and are used in countless applications – from technology to medicine to household appliances.
Advantages:
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Highest adhesive force with smallest volume
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Durable and stable
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Versatile
Why are neodymium magnets so strong?
The magnetic strength is based on:
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Crystal structure: Nd2Fe14B enables extreme magnetic alignment
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Material density: High proportion of magnetically active elements
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Magnetization processes: Optimized for maximum remanence and coercivity
They are up to 10 times stronger than conventional ferrite magnets.
Production of neodymium magnets
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Mixture of neodymium, iron and boron
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Vacuum melting & atomization to powder
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Pressing in a magnetic field
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Sintering at approx. 1100°C
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Coating (e.g. nickel)
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Magnetization in the pulsed magnetic field
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Quality control & calibration
Temperature limit: Why max. 80 °C?
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Loss of magnetic force begins at approx. 80 °C
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Irreversible damage from 150–200 °C (except special types)
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Curie temperature at ~320 °C: complete loss of magnetism
Tip: For high temperatures choose SH, UH, EH types.
Applications of neodymium magnets
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Electric motors (e-bikes, drones, wind power)
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Speakers, headphones
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Magnetic switches, sensors, safety applications
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Medicine : MRI, dental technology
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Household & DIY : Furniture, Workshop, Refrigerator
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Office : magnetic boards, glass boards
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Hobby & Model Building
How long do neodymium magnets last?
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Magnetically active for over 100 years without external influences
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No "discharge" like with batteries
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Caution: Heat damage, shocks, corrosion
Frequently asked questions & everyday knowledge
Do magnets interfere with my phone?
Not directly, but strong magnetism can affect the compass, hull sensors, and speakers. Keeping your distance is enough.
Are magnets dangerous?
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Yes, if swallowed by children
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Strong enough to pinch skin
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Be careful with pacemakers and credit cards
What do magnets attract?
Only ferromagnetic metals such as iron, cobalt and nickel.
Which magnets for the glass board?
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Extra strong flat magnets with large contact surface
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Alternatively: magnetic strips or foils
How do magnets work?
The alignment of electron spins creates magnetic domains that together generate a magnetic field.
Magnet types & variants
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Round, cuboid, ring, sphere, disc
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With internal thread, countersink or hook
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Coated (plastic, rubber) for protection and slip resistance
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Adhesive magnets & magnetic foil
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Custom-made to measure – inquire now!
Tips for storage & care
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Store in a dry place and protected from corrosion
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Never stack unprotected – risk of breakage!
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Do not use near storage media or implants
Environment & Recycling
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Neodymium is rare and difficult to mine
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Old magnets can be recycled – contact a specialist company for disposal
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Alternative developments: Rare-earth-free magnets in research
Keywords & SEO questions (integrated in the text)
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Making magnets yourself – is that possible?
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Conclusion: Rediscover magnetic power
At Strong Magnets GmbH you will find:
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Highest quality
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Fair prices
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Huge selection
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First-hand expertise
Discover, marvel and shop magnetically now: Go to the shop
Any questions? Contact us anytime or use our Magnet glossary and live chat for quick answers.
Stay curious – stay magnetic!
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