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MW 10x3 zestaw 50 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010542

GTIN/EAN: 5906301815334

Load capacity 2.15 kg / 21.08 N Magnetic Induction 318.70 mT / 3187 Gs
Diameter Ø
10 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
88.5 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check technical data »

44.71 zł net / pcs

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Frequently asked questions

Where can I buy strong cylindrical neodymium magnets?
See the available cylinders in the DHIT catalogue. Compare dimensions, grade and the pull-force value on each product card; grade alone does not determine the pull force of a finished magnet.
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Yes, but size alone is not enough to predict the result. Geometry, the steel surface and the direction of load affect the grip. Compare the specifications of the selected dimensions on their product cards.
Which cylindrical magnet can work at a higher temperature?
Check the operating-temperature limit of the particular model rather than assuming one limit for all N grades. The offered N52 models are rated up to 60°C. For hotter applications, ask for a product with a confirmed specification for the actual working temperature.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Physical properties - MW 10x3 zestaw 50 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 10x3 zestaw 50 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010542
GTIN/EAN 5906301815334
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 10 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 88.5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.15 kg / 21.08 N
Magnetic Induction ~ ? 318.70 mT / 3187 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x3 zestaw 50 szt. / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Physical analysis of the magnet - technical parameters

The following information represent the direct effect of a mathematical simulation. Values rely on algorithms for the class Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MW 10x3 zestaw 50 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3185 Gs
318.5 mT
 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
 medium risk
1 mm 2657 Gs
265.7 mT
 1.50 kg / 3.30 LBS
1496.2 g / 14.7 N
 weak grip
2 mm 2081 Gs
208.1 mT
 0.92 kg / 2.02 LBS
918.1 g / 9.0 N
 weak grip
3 mm 1573 Gs
157.3 mT
 0.52 kg / 1.16 LBS
524.4 g / 5.1 N
 weak grip
5 mm 874 Gs
87.4 mT
 0.16 kg / 0.36 LBS
161.7 g / 1.6 N
 weak grip
10 mm 241 Gs
24.1 mT
 0.01 kg / 0.03 LBS
12.3 g / 0.1 N
 weak grip
15 mm 92 Gs
9.2 mT
 0.00 kg / 0.00 LBS
1.8 g / 0.0 N
 weak grip
20 mm 44 Gs
4.4 mT
 0.00 kg / 0.00 LBS
0.4 g / 0.0 N
 weak grip
30 mm 14 Gs
1.4 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 weak grip
50 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 weak grip
Magnetic force decreases sharply per each millimeter of gap. Note that even the smallest gap (e.g., dirt, varnish, dust) strongly weakens the grip. Magnetic products hold optimally at the point of direct contact; gap weakens the power. See how rapidly the load capacity plummet, when the product does not touch directly to the steel surface. When calculating the assembly, avoid redundant distances.

Table 2: Sliding force (vertical surface)
MW 10x3 zestaw 50 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.43 kg / 0.95 LBS
430.0 g / 4.2 N
1 mm Raw steel (µ ≈ 0.2) 0.30 kg / 0.66 LBS
300.0 g / 2.9 N
2 mm Raw steel (µ ≈ 0.2) 0.18 kg / 0.41 LBS
184.0 g / 1.8 N
3 mm Raw steel (µ ≈ 0.2) 0.10 kg / 0.23 LBS
104.0 g / 1.0 N
5 mm Raw steel (µ ≈ 0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
10 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
The following data calculates the estimated shear load sufficient to start the downward movement of the magnet down along a vertical metal surface (considering typical friction coefficient). The holding force is relative to the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MW 10x3 zestaw 50 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.64 kg / 1.42 LBS
645.0 g / 6.3 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.43 kg / 0.95 LBS
430.0 g / 4.2 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.22 kg / 0.47 LBS
215.0 g / 2.1 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
1.08 kg / 2.37 LBS
1075.0 g / 10.5 N
When hanging a element on a vertical plane (e.g., a car body), it will only hold barely about 1/5 of its nominal power. Gravitational force and a low friction coefficient influence the fact that holders slip faster than they pop off the substrate. Designing a hanger? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slip down under a noticeably lighter weight. Utilizing a rubberized layer can effectively increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 10x3 zestaw 50 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.22 kg / 0.47 LBS
215.0 g / 2.1 N
1 mm
25%
 0.54 kg / 1.18 LBS
537.5 g / 5.3 N
2 mm
50%
 1.08 kg / 2.37 LBS
1075.0 g / 10.5 N
3 mm
75%
 1.61 kg / 3.55 LBS
1612.5 g / 15.8 N
5 mm
100%
 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
10 mm
100%
 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
11 mm
100%
 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
12 mm
100%
 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
A thin sheet is incapable of take in the entire magnetic field, which squanders power of the holder. If you attach a powerful product to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To utilize 100% of this neodymium's power, you require a sufficiently solid element of metal. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the magnet shows lower pull force. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal resistance (stability) - power drop
MW 10x3 zestaw 50 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.15 kg / 4.74 LBS
2150.0 g / 21.1 N
 Estimate
40 °C -4.4% 2.06 kg / 4.53 LBS
2056.4 g / 20.2 N
 Estimate
60 °C -8.6% 1.96 kg / 4.33 LBS
1965.0 g / 19.3 N
 Estimate
80 °C -12.8% 1.88 kg / 4.13 LBS
1875.6 g / 18.4 N
 Material limit
100 °C — — Out of range — no model
The table estimates the reversible force change relative to 20°C, assuming a Br coefficient of -0.11%/°C and force proportional to Br². This is a simplified model with unchanged contact and geometry, not a measurement. Above the material limit, neither force nor irreversible magnetization loss is predicted.
The temperature limit comes from this product’s material data. Permissible conditions also depend on geometry and the magnetic circuit. Without B-H curves for the specific grade and temperature, Pc alone does not determine irreversible demagnetization. Values within the material range do not guarantee the allowable temperature of the complete assembly.

Table 6: Two magnets (repulsion) - field range
MW 10x3 zestaw 50 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.91 kg / 10.83 LBS
4 754 Gs
0.74 kg / 1.62 LBS
737 g / 7.2 N
 N/A
1 mm 4.18 kg / 9.22 LBS
5 877 Gs
0.63 kg / 1.38 LBS
627 g / 6.2 N
 3.76 kg / 8.30 LBS
~0 Gs
2 mm 3.42 kg / 7.54 LBS
5 314 Gs
0.51 kg / 1.13 LBS
513 g / 5.0 N
 3.08 kg / 6.78 LBS
~0 Gs
3 mm 2.71 kg / 5.98 LBS
4 732 Gs
0.41 kg / 0.90 LBS
407 g / 4.0 N
 2.44 kg / 5.38 LBS
~0 Gs
5 mm 1.59 kg / 3.52 LBS
3 630 Gs
0.24 kg / 0.53 LBS
239 g / 2.3 N
 1.44 kg / 3.16 LBS
~0 Gs
10 mm 0.37 kg / 0.81 LBS
1 747 Gs
0.06 kg / 0.12 LBS
55 g / 0.5 N
 0.33 kg / 0.73 LBS
~0 Gs
20 mm 0.03 kg / 0.06 LBS
483 Gs
0.00 kg / 0.01 LBS
4 g / 0.0 N
 0.03 kg / 0.06 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
48 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
29 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
19 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
13 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
9 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
7 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products interact from a much further distance than a neodymium and metal combination. The connection of two magnets creates a more powerful interaction and a larger range of operation. Planning to create a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is extreme. The repulsion force is slightly lower than the connection force, but still impressive.
*Field value in repulsion mode drops to ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Note: Results demonstrate shear force of dual identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Axial field levels — not safety zones
MW 10x3 zestaw 50 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 4.5 cm
< 10 Gs < 1.0 mT 3.5 cm
< 20 Gs < 2.0 mT 3.0 cm
< 40 Gs < 4.0 mT 2.5 cm
< 50 Gs < 5.0 mT 2.0 cm
< 400 Gs < 40.0 mT 1.0 cm
< 600 Gs < 60.0 mT 1.0 cm
Reference field levels for a model of one magnet, on its axis in air, with a 5 mm distance step. These are not device immunity limits or safe distances for implants. Do not use this table to assess the safety of a pacemaker, defibrillator or other implant; follow the device manufacturer’s and your clinician’s guidance. Steel and other magnets change the field distribution.

Table 8: Collisions (kinetic energy) - warning
MW 10x3 zestaw 50 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 3.64 km/h
(1.01 m/s)
 0.05 J
30 mm 3.66 km/h
(1.02 m/s)
 0.05 J
50 mm 3.66 km/h
(1.02 m/s)
 0.05 J
100 mm 3.66 km/h
(1.02 m/s)
 0.05 J
Neodymium magnets are very brittle – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Surface protection spec
MW 10x3 zestaw 50 szt. / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MW 10x3 zestaw 50 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 694 Mx 26.9 µWb
Pc Coefficient 0.40 Low (Flat)
Flux value emitted by the magnet pole. Essential parameter in coil applications and motors. Pc value defines the magnet's operating point.

Table 11: Submerged application
MW 10x3 zestaw 50 szt. / N38

Environment Effective steel pull Effect
Air (land) 2.15 kg Standard
Water (riverbed) 2.46 kg
(+0.31 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Warning: On a vertical wall, the magnet holds only approx. 20-30% of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Power loss vs temp

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.40

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Engineering data and GPSR

Elemental analysis

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010542-2026
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The offered product is a very strong cylindrical magnet, composed of modern NdFeB material, which, at dimensions of Ø10x3 mm, guarantees maximum efficiency. This specific item features a tolerance of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 2.15 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 21.08 N with a weight of only 88.5 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 10.1 mm) using epoxy glues. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Choose the material grade together with the dimensions and working conditions. A grade designation alone does not determine the pull force of the finished magnet. Check the properties and working temperature of this specific model on its product card; contact us before ordering for an unusual application.
This model is characterized by dimensions Ø10x3 mm, which, at a weight of 88.5 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 2.15 kg (force ~21.08 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 3 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of neodymium magnets.

Benefits

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • They retain attractive force for nearly ten years – the drop is just ~1% (based on simulations),
  • Neodymium magnets are characterized by exceptionally resistant to magnetic field loss caused by magnetic disturbances,
  • A magnet with a smooth gold surface has better aesthetics,
  • Neodymium magnets achieve maximum magnetic induction on a small surface, which allows for strong attraction,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures approaching 230°C and above...
  • Thanks to modularity in shaping and the ability to modify to complex applications,
  • Significant place in modern industrial fields – they serve a role in computer drives, drive modules, medical devices, also multitasking production systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • We recommend cover - magnetic holder, due to difficulties in realizing threads inside the magnet and complex shapes.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical after entering the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Lifting parameters

Maximum lifting capacity of the magnet – what contributes to it?

Breakaway force was determined for the most favorable conditions, including:
  • on a plate made of mild steel, effectively closing the magnetic flux
  • with a thickness minimum 10 mm
  • with a surface perfectly flat
  • under conditions of no distance (surface-to-surface)
  • under perpendicular application of breakaway force (90-degree angle)
  • in neutral thermal conditions

Practical lifting capacity: influencing factors

Bear in mind that the working load may be lower subject to the following factors, starting with the most relevant:
  • Clearance – existence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Steel grade – ideal substrate is high-permeability steel. Cast iron may attract less.
  • Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
  • Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate lowers the load capacity.

Safe handling of neodymium magnets
Safe operation

Handle with care. Rare earth magnets act from a distance and connect with huge force, often faster than you can react.

Safe distance

Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Danger to the youngest

Always store magnets away from children. Choking hazard is high, and the effects of magnets clamping inside the body are tragic.

Machining danger

Fire warning: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation appears, immediately stop handling magnets and wear gloves.

Permanent damage

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

GPS and phone interference

A powerful magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Health Danger

For implant holders: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.

Hand protection

Big blocks can crush fingers instantly. Do not put your hand betwixt two attracting surfaces.

Beware of splinters

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Caution! More info about hazards in the article: Magnet Safety Guide.