← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MP 16x8/4x3 / N38 - ring magnet

ring magnet

Catalog no 030396

GTIN/EAN: 5906301812333

5.00
Load capacity 2.78 kg / 27.29 N Magnetic Induction 217.61 mT / 2176 Gs
Diameter
16 mm [±0,1 mm]
internal diameter Ø
8/4 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
4.24 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical parameters »

2.03 zł net / pcs

2.50 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
2.03 zł
2.50 zł
price from 300 pcs
1.908 zł
2.35 zł
price from 1250 pcs
1.786 zł
2.20 zł

Frequently asked questions

What is the hole in a ring magnet for?
For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.
What is the polarisation?
Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.
What sizes are available?
Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

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.

Order by 14:00 and we’ll ship today!

Product card - MP 16x8/4x3 / N38 - ring magnet

Specification / characteristics - MP 16x8/4x3 / N38 - ring magnet

properties
properties values
Cat. no. 030396
GTIN/EAN 5906301812333
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter 16 mm [±0,1 mm]
internal diameter Ø 8/4 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 4.24 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.78 kg / 27.29 N
Magnetic Induction ~ ? 217.61 mT / 2176 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 16x8/4x3 / N38 - ring 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 simulation of the product - data

Presented values constitute the outcome of a engineering calculation. Results are based on algorithms for the material Nd2Fe14B. Operational performance may differ. Use these calculations as a supplementary guide for designers.

Table 1: Static pull force (pull vs distance) - power drop
MP 16x8/4x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1882 Gs
188.2 mT
 2.78 kg / 6.13 LBS
2780.0 g / 27.3 N
 strong
1 mm 1746 Gs
174.6 mT
 2.39 kg / 5.27 LBS
2392.4 g / 23.5 N
 strong
2 mm 1561 Gs
156.1 mT
 1.91 kg / 4.22 LBS
1913.9 g / 18.8 N
 safe
3 mm 1357 Gs
135.7 mT
 1.45 kg / 3.19 LBS
1445.8 g / 14.2 N
 safe
5 mm 969 Gs
96.9 mT
 0.74 kg / 1.63 LBS
737.7 g / 7.2 N
 safe
10 mm 387 Gs
38.7 mT
 0.12 kg / 0.26 LBS
117.4 g / 1.2 N
 safe
15 mm 171 Gs
17.1 mT
 0.02 kg / 0.05 LBS
22.9 g / 0.2 N
 safe
20 mm 87 Gs
8.7 mT
 0.01 kg / 0.01 LBS
5.9 g / 0.1 N
 safe
30 mm 30 Gs
3.0 mT
 0.00 kg / 0.00 LBS
0.7 g / 0.0 N
 safe
50 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Grip strength drops drastically per each millimeter of distance. Remember that every additional insulation layer (e.g., dirt, varnish, dust) significantly diminishes the holding power. Neodymiums work strongest at the point of direct contact; distance drastically cuts the force. Notice how quickly the load capacity fall, when the product does not adhere directly to the steel surface. When designing the mounting, discard unnecessary gaps.

Table 2: Shear capacity (vertical surface)
MP 16x8/4x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.56 kg / 1.23 LBS
556.0 g / 5.5 N
1 mm Stal (~0.2) 0.48 kg / 1.05 LBS
478.0 g / 4.7 N
2 mm Stal (~0.2) 0.38 kg / 0.84 LBS
382.0 g / 3.7 N
3 mm Stal (~0.2) 0.29 kg / 0.64 LBS
290.0 g / 2.8 N
5 mm Stal (~0.2) 0.15 kg / 0.33 LBS
148.0 g / 1.5 N
10 mm Stal (~0.2) 0.02 kg / 0.05 LBS
24.0 g / 0.2 N
15 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
The following data calculates the estimated holding capacity sufficient to initiate the sliding of the magnet vertically along a upright steel wall (assuming standard friction coefficient). This value is a function of the gap size between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MP 16x8/4x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.83 kg / 1.84 LBS
834.0 g / 8.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.56 kg / 1.23 LBS
556.0 g / 5.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.28 kg / 0.61 LBS
278.0 g / 2.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.39 kg / 3.06 LBS
1390.0 g / 13.6 N
When mounting a element on a upright surface (e.g., a car body), it will only hold only approx. 20%-30% of its nominal power. Gravitational force and a low friction coefficient cause that holders slide down easier than they pull off. Designing a wall mount? Note that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will slip down under a noticeably lighter cargo. Application of an anti-slip layer can significantly raise the stability.

Table 4: Material efficiency (saturation) - power losses
MP 16x8/4x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.28 kg / 0.61 LBS
278.0 g / 2.7 N
1 mm
25%
 0.70 kg / 1.53 LBS
695.0 g / 6.8 N
2 mm
50%
 1.39 kg / 3.06 LBS
1390.0 g / 13.6 N
3 mm
75%
 2.09 kg / 4.60 LBS
2085.0 g / 20.5 N
5 mm
100%
 2.78 kg / 6.13 LBS
2780.0 g / 27.3 N
10 mm
100%
 2.78 kg / 6.13 LBS
2780.0 g / 27.3 N
11 mm
100%
 2.78 kg / 6.13 LBS
2780.0 g / 27.3 N
12 mm
100%
 2.78 kg / 6.13 LBS
2780.0 g / 27.3 N
A thin metal plate is incapable of conduct the entire magnetic field, which weakens actual performance of the magnet. Should you install a neodymium to a weak sheet, the field will penetrate right through and the holding will be smaller. To utilize 100% of this neodymium's power, you require a sufficiently solid piece of metal. The saturation phenomenon means that on thin elements (e.g., car bodies), the product shows lower pull force. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal stability (material behavior) - resistance threshold
MP 16x8/4x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.78 kg / 6.13 LBS
2780.0 g / 27.3 N
 OK
40 °C -2.2% 2.72 kg / 5.99 LBS
2718.8 g / 26.7 N
 OK
60 °C -4.4% 2.66 kg / 5.86 LBS
2657.7 g / 26.1 N
80 °C -6.6% 2.60 kg / 5.72 LBS
2596.5 g / 25.5 N
100 °C -28.8% 1.98 kg / 4.36 LBS
1979.4 g / 19.4 N
Ordinary NdFeB products change their properties power past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly destroy this product. With increasing heat, the neodymium's force momentarily decreases. Refrain from using this product near heat sources exceeding its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.
*Technical advisory: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Flat magnets (low Pc) risk losing magnetic properties under lower heat stress than taller cylinders. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 16x8/4x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.50 kg / 7.71 LBS
3 330 Gs
0.52 kg / 1.16 LBS
525 g / 5.1 N
 N/A
1 mm 3.28 kg / 7.23 LBS
3 644 Gs
0.49 kg / 1.08 LBS
492 g / 4.8 N
 2.95 kg / 6.51 LBS
~0 Gs
2 mm 3.01 kg / 6.64 LBS
3 492 Gs
0.45 kg / 1.00 LBS
452 g / 4.4 N
 2.71 kg / 5.97 LBS
~0 Gs
3 mm 2.71 kg / 5.98 LBS
3 316 Gs
0.41 kg / 0.90 LBS
407 g / 4.0 N
 2.44 kg / 5.39 LBS
~0 Gs
5 mm 2.11 kg / 4.64 LBS
2 920 Gs
0.32 kg / 0.70 LBS
316 g / 3.1 N
 1.90 kg / 4.18 LBS
~0 Gs
10 mm 0.93 kg / 2.05 LBS
1 939 Gs
0.14 kg / 0.31 LBS
139 g / 1.4 N
 0.84 kg / 1.84 LBS
~0 Gs
20 mm 0.15 kg / 0.33 LBS
773 Gs
0.02 kg / 0.05 LBS
22 g / 0.2 N
 0.13 kg / 0.29 LBS
~0 Gs
50 mm 0.00 kg / 0.01 LBS
98 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
60 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
40 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
27 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
20 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
14 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two strong neodymiums interact from a significantly greater distance than a magnet and steel setup. The setup of two magnets generates a stronger field and a further horizon of performance. Want to build a strong closure? Utilize two neodymiums instead of one magnet and a steel. Be careful that when attracting two neodymiums, the impact force is huge. The repulsion force is marginally weaker than the connection force, but still significant.
*The magnetic induction for N-N configuration reaches ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Results demonstrate sliding force of dual matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MP 16x8/4x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.0 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Mechanical watch 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Extremely neodym field is a large risk to electronic devices as well as pacemakers. These NdFeB products generate a field that prevents correct functioning of digital equipment. Be aware: the unseen radiation passes through tissues and housings. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - collision effects
MP 16x8/4x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.78 km/h
(6.88 m/s)
 0.10 J
30 mm 25.22 km/h
(7.01 m/s)
 0.10 J
50 mm 25.23 km/h
(7.01 m/s)
 0.10 J
100 mm 25.23 km/h
(7.01 m/s)
 0.10 J
Neodymium magnets are delicate – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Coating parameters (durability)
MP 16x8/4x3 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MP 16x8/4x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 743 Mx 37.4 µWb
Pc Coefficient 0.24 Low (Flat)
Flux value emitted by the pole surface. Key data in coil applications and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 16x8/4x3 / N38

Environment Effective steel pull Effect
Air (land) 2.78 kg Standard
Water (riverbed) 3.18 kg
(+0.40 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Warning: On a vertical surface, the magnet retains only a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Power loss vs temp

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.24

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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.

Technical and environmental data

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%

Sustainability

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: 030396-2026
Magnet Unit Converter

Magnet pull force

Field Strength

Just populate one field, and the tool compute the rest automatically.

Other products

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread
Product available Ships today (order by 14:00)

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

23.37 zł brutto / pcs
MP 25x8x20 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 25x8x20 / N38 - ring magnet

41.71 zł brutto / pcs
MW 40x8 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 40x8 / N38 - cylindrical magnet

31.27 zł brutto / pcs
MW 25x5 / N38AH - cylindrical magnet
Product available Ships today (order by 14:00)

MW 25x5 / N38AH - cylindrical magnet

16.68 zł brutto / pcs
The ring magnet with a hole MP 16x8/4x3 / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 2.78 kg works great as a door latch, speaker holder, or mounting element in devices.
This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.
Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for indoor use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.
A screw or bolt with a thread diameter smaller than 8/4 mm fits this model. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Aesthetic mounting requires selecting the appropriate head size.
The presented product is a ring magnet with dimensions Ø16 mm (outer diameter) and height 3 mm. The key parameter here is the holding force amounting to approximately 2.78 kg (force ~27.29 N). The mounting hole diameter is precisely 8/4 mm.
These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths as well as weaknesses of neodymium magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
  • They are noted for resistance to demagnetization induced by external magnetic fields,
  • Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Considering the possibility of accurate molding and adaptation to custom requirements, magnetic components can be created in a variety of geometric configurations, which increases their versatility,
  • Universal use in innovative solutions – they are commonly used in magnetic memories, motor assemblies, advanced medical instruments, also technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of neodymium magnets:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in realizing nuts and complex forms in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to complicate diagnosis medical in case of swallowing.
  • Due to neodymium price, their price is higher than average,

Pull force analysis

Maximum holding power of the magnet – what it depends on?

Holding force of 2.78 kg is a measurement result executed under standard conditions:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • possessing a massiveness of at least 10 mm to ensure full flux closure
  • with a plane perfectly flat
  • under conditions of gap-free contact (surface-to-surface)
  • during pulling in a direction perpendicular to the mounting surface
  • at standard ambient temperature

Practical lifting capacity: influencing factors

Please note that the application force will differ influenced by the following factors, in order of importance:
  • Gap between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Material composition – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.

H&S for magnets
This is not a toy

NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them attracting across intestines, which constitutes a critical condition and necessitates immediate surgery.

Maximum temperature

Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Protect data

Data protection: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, timepieces).

Medical implants

Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Flammability

Fire warning: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.

Shattering risk

Neodymium magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them breaking into shards.

Powerful field

Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Threat to navigation

A strong magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a device to prevent breaking the sensors.

Pinching danger

Mind your fingers. Two powerful magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Nickel allergy

Certain individuals have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to a rash. We strongly advise wear protective gloves.

Safety First! Need more info? Check our post: Why are neodymium magnets dangerous?