← previous
next →
Product available Ships today (order by 14:00)

MP 15x7/3.5x3 / N38 - ring magnet

ring magnet

Catalog no 030182

GTIN/EAN: 5906301811992

5.00

Diameter

15 mm [±0,1 mm]

internal diameter Ø

7/3.5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

3.76 g

Magnetization Direction

↑ axial

Load capacity

2.71 kg / 26.61 N

Magnetic Induction

230.16 mT / 2302 Gs

Coating

[NiCuNi] Nickel

technical specifications »

1.747 ZŁ with VAT / pcs + price for transport

1.420 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
1.420 ZŁ
1.747 ZŁ
price from 450 pcs
1.335 ZŁ
1.642 ZŁ
price from 1800 pcs
1.250 ZŁ
1.537 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Looking for a better price?

Give us a call +48 22 499 98 98 or contact us using request form through our site.
Lifting power and structure of a magnet can be analyzed using our our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

Technical details - MP 15x7/3.5x3 / N38 - ring magnet

Specification / characteristics - MP 15x7/3.5x3 / N38 - ring magnet

properties
properties values
Cat. no. 030182
GTIN/EAN 5906301811992
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 15 mm [±0,1 mm]
internal diameter Ø 7/3.5 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 3.76 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.71 kg / 26.61 N
Magnetic Induction ~ ? 230.16 mT / 2302 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 15x7/3.5x3 / N38 - ring magnet
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 BH max KJ/m
max. 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 312 - 380 °C
Curie Temperature TF 593 - 716 °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 assembly - technical parameters

These values constitute the result of a engineering calculation. Results were calculated on models for the material Nd2Fe14B. Operational parameters may differ. Treat these data as a reference point for designers.

Table 1: Static force (force vs gap) - interaction chart
MP 15x7/3.5x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1995 Gs
199.5 mT
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
 medium risk
1 mm 1833 Gs
183.3 mT
 2.29 kg / 5.05 pounds
2289.1 g / 22.5 N
 medium risk
2 mm 1618 Gs
161.8 mT
 1.78 kg / 3.93 pounds
1784.1 g / 17.5 N
 low risk
3 mm 1385 Gs
138.5 mT
 1.31 kg / 2.88 pounds
1307.5 g / 12.8 N
 low risk
5 mm 959 Gs
95.9 mT
 0.63 kg / 1.38 pounds
627.1 g / 6.2 N
 low risk
10 mm 362 Gs
36.2 mT
 0.09 kg / 0.20 pounds
89.3 g / 0.9 N
 low risk
15 mm 156 Gs
15.6 mT
 0.02 kg / 0.04 pounds
16.5 g / 0.2 N
 low risk
20 mm 78 Gs
7.8 mT
 0.00 kg / 0.01 pounds
4.1 g / 0.0 N
 low risk
30 mm 27 Gs
2.7 mT
 0.00 kg / 0.00 pounds
0.5 g / 0.0 N
 low risk
50 mm 6 Gs
0.6 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 low risk
Magnetic force decreases drastically per each millimeter of gap. Note that even a very thin break (e.g., dirt, varnish, veneer) noticeably diminishes the holding power. Magnets hold most effectively in perfect adhesion; distance drastically cuts the force. See how rapidly the load capacity fall, when the magnet does not touch tightly to the steel surface. When calculating the arrangement, eliminate redundant distances.

Table 2: Shear hold (vertical surface)
MP 15x7/3.5x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.54 kg / 1.19 pounds
542.0 g / 5.3 N
1 mm Stal (~0.2) 0.46 kg / 1.01 pounds
458.0 g / 4.5 N
2 mm Stal (~0.2) 0.36 kg / 0.78 pounds
356.0 g / 3.5 N
3 mm Stal (~0.2) 0.26 kg / 0.58 pounds
262.0 g / 2.6 N
5 mm Stal (~0.2) 0.13 kg / 0.28 pounds
126.0 g / 1.2 N
10 mm Stal (~0.2) 0.02 kg / 0.04 pounds
18.0 g / 0.2 N
15 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
This section shows the estimated holding capacity needed to start the sliding of the magnet down along a upright metal surface (assuming typical 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 15x7/3.5x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.81 kg / 1.79 pounds
813.0 g / 8.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.54 kg / 1.19 pounds
542.0 g / 5.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.27 kg / 0.60 pounds
271.0 g / 2.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.36 kg / 2.99 pounds
1355.0 g / 13.3 N
When hanging a magnet on a upright plane (e.g., a board), it you can count on only about 1/5 of its nominal power. Gravitational force and a low friction coefficient influence the fact that products move down easier than they pop off the substrate. Want to create a hanger? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the element will give way down under a much lighter cargo. Application of an anti-slip coating can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 15x7/3.5x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.27 kg / 0.60 pounds
271.0 g / 2.7 N
1 mm
25%
 0.68 kg / 1.49 pounds
677.5 g / 6.6 N
2 mm
50%
 1.36 kg / 2.99 pounds
1355.0 g / 13.3 N
3 mm
75%
 2.03 kg / 4.48 pounds
2032.5 g / 19.9 N
5 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
10 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
11 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
12 mm
100%
 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
A too thin steel is incapable of take in the entire magnetic field, which squanders power of the holder. If you mount a strong magnet to a too thin substrate, the field will pass right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's potential, you require a sufficiently solid element of steel. The saturation effect causes that on sheet metal structures (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 15x7/3.5x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.71 kg / 5.97 pounds
2710.0 g / 26.6 N
 OK
40 °C -2.2% 2.65 kg / 5.84 pounds
2650.4 g / 26.0 N
 OK
60 °C -4.4% 2.59 kg / 5.71 pounds
2590.8 g / 25.4 N
80 °C -6.6% 2.53 kg / 5.58 pounds
2531.1 g / 24.8 N
100 °C -28.8% 1.93 kg / 4.25 pounds
1929.5 g / 18.9 N
Classic neodymiums change their properties strength above the temperature limit. Avoid high temperatures – excessive heat can irreversibly demagnetize this magnet. With increasing heat, the neodymium's power momentarily lowers. Avoid using this magnet close to heaters higher than its safe range. Exceeding the critical threshold will lead to irreversible degradation of magnetic properties.
*Important note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Flat magnets (pancake types) are more susceptible to demagnetization under lower heat stress compared to rod magnets. Red status in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MP 15x7/3.5x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.48 kg / 7.68 pounds
3 483 Gs
0.52 kg / 1.15 pounds
523 g / 5.1 N
 N/A
1 mm 3.24 kg / 7.14 pounds
3 846 Gs
0.49 kg / 1.07 pounds
486 g / 4.8 N
 2.91 kg / 6.43 pounds
~0 Gs
2 mm 2.94 kg / 6.49 pounds
3 666 Gs
0.44 kg / 0.97 pounds
441 g / 4.3 N
 2.65 kg / 5.84 pounds
~0 Gs
3 mm 2.62 kg / 5.78 pounds
3 460 Gs
0.39 kg / 0.87 pounds
393 g / 3.9 N
 2.36 kg / 5.20 pounds
~0 Gs
5 mm 1.98 kg / 4.36 pounds
3 004 Gs
0.30 kg / 0.65 pounds
296 g / 2.9 N
 1.78 kg / 3.92 pounds
~0 Gs
10 mm 0.81 kg / 1.78 pounds
1 919 Gs
0.12 kg / 0.27 pounds
121 g / 1.2 N
 0.73 kg / 1.60 pounds
~0 Gs
20 mm 0.11 kg / 0.25 pounds
724 Gs
0.02 kg / 0.04 pounds
17 g / 0.2 N
 0.10 kg / 0.23 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
88 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
54 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
35 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
24 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
17 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
13 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnetic products interact from a much further distance than a magnet and steel combination. Such a system of magnet-to-magnet generates a stronger field and a wider radius of action. Want to build a solid fastener? Apply two magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the pinch force is massive. The levitation is marginally weaker than the connection force, but still large.
*Flux density in repulsion mode reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
Attention: Figures refer to friction force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - warnings
MP 15x7/3.5x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 5.5 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.0 cm
Remote 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 IT equipment as well as pacemakers. These magnets produce a field that destroys function of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and plastic. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MP 15x7/3.5x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 27.63 km/h
(7.67 m/s)
 0.11 J
30 mm 46.90 km/h
(13.03 m/s)
 0.32 J
50 mm 60.54 km/h
(16.82 m/s)
 0.53 J
100 mm 85.62 km/h
(23.78 m/s)
 1.06 J
Neodymium magnets are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Use safety goggles when working with large magnets.

Table 9: Surface protection spec
MP 15x7/3.5x3 / 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. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MP 15x7/3.5x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 3 461 Mx 34.6 µWb
Pc Coefficient 0.26 Low (Flat)
Total magnetic flux passing through the magnet pole. Key data in coil applications as well as sensors. Pc value determines the working geometry.

Table 11: Physics of underwater searching
MP 15x7/3.5x3 / N38

Environment Effective steel pull Effect
Air (land) 2.71 kg Standard
Water (riverbed) 3.10 kg
(+0.39 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Wall mount (shear)

*Warning: On a vertical surface, the magnet retains only ~20% of its perpendicular strength.

2. Steel saturation

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Heat tolerance

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.26

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.

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: 030182-2026
Quick Unit Converter
Pulling force
Magnetic Induction
Simply fill in a single box, and the tool calculate everything else for you.

View also offers

MP 30x6x10 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 30x6x10 / N38 - ring magnet

16.00 ZŁ brutto / pcs
SMZR 32x175 / N52 - magnetic separator with handle
Product available Ships today (order by 14:00)

SMZR 32x175 / N52 - magnetic separator with handle

553.50 ZŁ brutto / pcs
SM 25x300 [2xM8] / N52 - magnetic separator
Product available Ships today (order by 14:00)

SM 25x300 [2xM8] / N52 - magnetic separator

910.20 ZŁ brutto / pcs
MW 8x20 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 8x20 / N38 - cylindrical magnet

4.60 ZŁ brutto / pcs
It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. This product with a force of 2.71 kg works great as a door latch, speaker holder, or spacer element in devices.
This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.
These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but does not ensure full waterproofing. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. 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 7/3.5 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. Always check that the screw head is not larger than the outer diameter of the magnet (15 mm), so it doesn't protrude beyond the outline.
The presented product is a ring magnet with dimensions Ø15 mm (outer diameter) and height 3 mm. The pulling force of this model is an impressive 2.71 kg, which translates to 26.61 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 7/3.5 mm.
The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros as well as cons of neodymium magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain attractive force for nearly 10 years – the drop is just ~1% (according to analyses),
  • They are resistant to demagnetization induced by external magnetic fields,
  • By using a shiny layer of silver, the element has an elegant look,
  • Neodymium magnets ensure maximum magnetic induction on a contact point, which increases force concentration,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Considering the possibility of accurate forming and adaptation to custom requirements, magnetic components can be produced in a broad palette of forms and dimensions, which expands the range of possible applications,
  • Fundamental importance in high-tech industry – they are used in magnetic memories, motor assemblies, medical equipment, and industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices

Weaknesses

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing threads and complicated shapes in magnets, we recommend using casing - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what it depends on?

Information about lifting capacity was defined for ideal contact conditions, taking into account:
  • using a base made of low-carbon steel, serving as a ideal flux conductor
  • with a thickness minimum 10 mm
  • with an ideally smooth contact surface
  • under conditions of no distance (metal-to-metal)
  • under vertical force direction (90-degree angle)
  • at room temperature

Lifting capacity in practice – influencing factors

Bear in mind that the working load will differ influenced by elements below, starting with the most relevant:
  • Distance (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Steel grade – ideal substrate is high-permeability steel. Cast iron may attract less.
  • Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.

Warnings
Keep away from children

Neodymium magnets are not intended for children. Eating a few magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.

Electronic devices

Data protection: Strong magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

GPS and phone interference

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Skin irritation risks

It is widely known that nickel (the usual finish) is a common allergen. For allergy sufferers, prevent touching magnets with bare hands or choose encased magnets.

Hand protection

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!

Caution required

Exercise caution. Rare earth magnets act from a distance and snap with massive power, often faster than you can react.

Maximum temperature

Avoid heat. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Fire risk

Dust created during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.

Magnets are brittle

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

Pacemakers

Warning for patients: Powerful magnets affect medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Safety First! More info about risks in the article: Safety of working with magnets.