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

MP 20x8x5 / N38 - ring magnet

ring magnet

Catalog no 030188

GTIN/EAN: 5906301812050

5.00
Load capacity 5.82 kg / 57.06 N Magnetic Induction 277.16 mT / 2772 Gs
Diameter
20 mm [±0,1 mm]
internal diameter Ø
8 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
9.9 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical parameters »

3.09 zł net / pcs

3.80 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
3.09 zł
3.80 zł
price from 200 pcs
2.90 zł
3.57 zł
price from 850 pcs
2.72 zł
3.34 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!

Technical of the product - MP 20x8x5 / N38 - ring magnet

Specification / characteristics - MP 20x8x5 / N38 - ring magnet

properties
properties values
Cat. no. 030188
GTIN/EAN 5906301812050
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 20 mm [±0,1 mm]
internal diameter Ø 8 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 9.9 g
Magnetization Direction ↑ axial
Load capacity ~ ? 5.82 kg / 57.06 N
Magnetic Induction ~ ? 277.16 mT / 2772 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x8x5 / 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

Technical modeling of the assembly - technical parameters

Presented information constitute the outcome of a mathematical calculation. Results are based on models for the class Nd2Fe14B. Operational performance may differ from theoretical values. Treat these data as a reference point for designers.

Table 1: Static pull force (force vs distance) - interaction chart
MP 20x8x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5917 Gs
591.7 mT
 5.82 kg / 12.83 lbs
5820.0 g / 57.1 N
 warning
1 mm 5321 Gs
532.1 mT
 4.71 kg / 10.38 lbs
4707.4 g / 46.2 N
 warning
2 mm 4736 Gs
473.6 mT
 3.73 kg / 8.22 lbs
3729.5 g / 36.6 N
 warning
3 mm 4184 Gs
418.4 mT
 2.91 kg / 6.42 lbs
2910.0 g / 28.5 N
 warning
5 mm 3216 Gs
321.6 mT
 1.72 kg / 3.79 lbs
1719.3 g / 16.9 N
 low risk
10 mm 1650 Gs
165.0 mT
 0.45 kg / 1.00 lbs
452.4 g / 4.4 N
 low risk
15 mm 907 Gs
90.7 mT
 0.14 kg / 0.30 lbs
136.8 g / 1.3 N
 low risk
20 mm 544 Gs
54.4 mT
 0.05 kg / 0.11 lbs
49.2 g / 0.5 N
 low risk
30 mm 240 Gs
24.0 mT
 0.01 kg / 0.02 lbs
9.6 g / 0.1 N
 low risk
50 mm 75 Gs
7.5 mT
 0.00 kg / 0.00 lbs
0.9 g / 0.0 N
 low risk
Magnetic force decreases sharply per each millimeter of spacing. Note that even a very thin break (e.g., contamination, paint, veneer) strongly weakens the grip. Neodymiums operate most effectively in perfect adhesion; air break drastically cuts the force. See how quickly the load capacity fall, when the product does not touch directly to the metal substrate. When planning the mounting, avoid unnecessary gaps.

Table 2: Slippage force (vertical surface)
MP 20x8x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.16 kg / 2.57 lbs
1164.0 g / 11.4 N
1 mm Stal (~0.2) 0.94 kg / 2.08 lbs
942.0 g / 9.2 N
2 mm Stal (~0.2) 0.75 kg / 1.64 lbs
746.0 g / 7.3 N
3 mm Stal (~0.2) 0.58 kg / 1.28 lbs
582.0 g / 5.7 N
5 mm Stal (~0.2) 0.34 kg / 0.76 lbs
344.0 g / 3.4 N
10 mm Stal (~0.2) 0.09 kg / 0.20 lbs
90.0 g / 0.9 N
15 mm Stal (~0.2) 0.03 kg / 0.06 lbs
28.0 g / 0.3 N
20 mm Stal (~0.2) 0.01 kg / 0.02 lbs
10.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
This section presents the estimated weight limit needed to cause the shifting of the magnet down along a upright steel plate (considering standard friction coefficient). The holding force is relative to the air gap between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 20x8x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.75 kg / 3.85 lbs
1746.0 g / 17.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.16 kg / 2.57 lbs
1164.0 g / 11.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.58 kg / 1.28 lbs
582.0 g / 5.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.91 kg / 6.42 lbs
2910.0 g / 28.5 N
When placing a element on a upright plane (e.g., a car body), it will only hold just about 1/5 of its maximum pull force. Gravitational force as well as a weak degree of grip mean that products move down faster than they detach. Designing a hanger? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a much lighter load. Using a rubber pad can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MP 20x8x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.58 kg / 1.28 lbs
582.0 g / 5.7 N
1 mm
25%
 1.46 kg / 3.21 lbs
1455.0 g / 14.3 N
2 mm
50%
 2.91 kg / 6.42 lbs
2910.0 g / 28.5 N
3 mm
75%
 4.37 kg / 9.62 lbs
4365.0 g / 42.8 N
5 mm
100%
 5.82 kg / 12.83 lbs
5820.0 g / 57.1 N
10 mm
100%
 5.82 kg / 12.83 lbs
5820.0 g / 57.1 N
11 mm
100%
 5.82 kg / 12.83 lbs
5820.0 g / 57.1 N
12 mm
100%
 5.82 kg / 12.83 lbs
5820.0 g / 57.1 N
A too thin steel is unable to absorb the full magnetic flux, which wastes potential of the magnet. If you mount a strong magnet to a thin surface, the flux will pass right through and the attraction force will be weaker. To achieve full efficiency of this magnet's potential, you require a sufficiently solid backing of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the magnet holds weaker. We recommend selecting the steel thickness from these parameters.

Table 5: Working in heat (stability) - thermal limit
MP 20x8x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 5.82 kg / 12.83 lbs
5820.0 g / 57.1 N
 OK
40 °C -2.2% 5.69 kg / 12.55 lbs
5692.0 g / 55.8 N
 OK
60 °C -4.4% 5.56 kg / 12.27 lbs
5563.9 g / 54.6 N
 OK
80 °C -6.6% 5.44 kg / 11.98 lbs
5435.9 g / 53.3 N
100 °C -28.8% 4.14 kg / 9.14 lbs
4143.8 g / 40.7 N
Classic neodymiums lose strength above the temperature limit. Avoid high temperatures – heat can irreversibly destroy this product. With every degree above norm, the neodymium's force momentarily drops. Do not use this product close to ovens higher than its working range. Exceeding the critical threshold will lead to permanent loss of magnetic properties.
*Important note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low Pc) risk losing magnetic properties sooner compared to rod magnets. The danger warning in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 20x8x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 54.03 kg / 119.11 lbs
6 121 Gs
8.10 kg / 17.87 lbs
8104 g / 79.5 N
 N/A
1 mm 48.76 kg / 107.50 lbs
11 242 Gs
7.31 kg / 16.13 lbs
7314 g / 71.8 N
 43.89 kg / 96.75 lbs
~0 Gs
2 mm 43.70 kg / 96.34 lbs
10 642 Gs
6.55 kg / 14.45 lbs
6555 g / 64.3 N
 39.33 kg / 86.71 lbs
~0 Gs
3 mm 38.98 kg / 85.94 lbs
10 051 Gs
5.85 kg / 12.89 lbs
5847 g / 57.4 N
 35.08 kg / 77.34 lbs
~0 Gs
5 mm 30.63 kg / 67.54 lbs
8 910 Gs
4.60 kg / 10.13 lbs
4595 g / 45.1 N
 27.57 kg / 60.78 lbs
~0 Gs
10 mm 15.96 kg / 35.19 lbs
6 432 Gs
2.39 kg / 5.28 lbs
2394 g / 23.5 N
 14.36 kg / 31.67 lbs
~0 Gs
20 mm 4.20 kg / 9.26 lbs
3 299 Gs
0.63 kg / 1.39 lbs
630 g / 6.2 N
 3.78 kg / 8.33 lbs
~0 Gs
50 mm 0.19 kg / 0.42 lbs
702 Gs
0.03 kg / 0.06 lbs
29 g / 0.3 N
 0.17 kg / 0.38 lbs
~0 Gs
60 mm 0.09 kg / 0.20 lbs
480 Gs
0.01 kg / 0.03 lbs
13 g / 0.1 N
 0.08 kg / 0.18 lbs
~0 Gs
70 mm 0.05 kg / 0.10 lbs
342 Gs
0.01 kg / 0.01 lbs
7 g / 0.1 N
 0.04 kg / 0.09 lbs
~0 Gs
80 mm 0.02 kg / 0.05 lbs
253 Gs
0.00 kg / 0.01 lbs
4 g / 0.0 N
 0.02 kg / 0.05 lbs
~0 Gs
90 mm 0.01 kg / 0.03 lbs
193 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.03 lbs
~0 Gs
100 mm 0.01 kg / 0.02 lbs
150 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnetic products attract each other from a much further distance than a magnet and steel combination. Such a system of two magnets creates a more powerful interaction and a wider radius of action. Want to build a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the impact force is extreme. The repulsion force is a bit weaker than the attraction, but still significant.
*Flux density for N-N configuration drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Important: Calculations refer to friction force of dual matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MP 20x8x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 14.5 cm
Hearing aid 10 Gs (1.0 mT) 11.5 cm
Timepiece 20 Gs (2.0 mT) 9.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 6.5 cm
Car key 50 Gs (5.0 mT) 6.0 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
Extremely neodym field poses a real danger to IT equipment and medical implants. These neodymiums generate a field that destroys function of digital equipment. Notice: the invisible magnetic field passes through tissues and plastic. Special caution must be taken by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - collision effects
MP 20x8x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.79 km/h
(6.61 m/s)
 0.22 J
30 mm 24.82 km/h
(6.89 m/s)
 0.24 J
50 mm 24.86 km/h
(6.90 m/s)
 0.24 J
100 mm 24.86 km/h
(6.91 m/s)
 0.24 J
Neodymium magnets are prone to chipping – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Impact energy can destroy the magnet or painful pinches to skin. Hold the magnet firmly during mounting so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when handling with large magnets.

Table 9: Surface protection spec
MP 20x8x5 / 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 following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Construction data (Pc)
MP 20x8x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 16 116 Mx 161.2 µWb
Pc Coefficient 1.13 High (Stable)
Total magnetic flux passing through the magnet pole. Essential parameter for generator designers and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Submerged application
MP 20x8x5 / N38

Environment Effective steel pull Effect
Air (land) 5.82 kg Standard
Water (riverbed) 6.66 kg
(+0.84 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
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. Vertical hold

*Caution: On a vertical wall, the magnet holds only a fraction of its nominal pull.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.

3. Heat tolerance

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.13

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.

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%

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: 030188-2026
Measurement Calculator

Magnet pull force

Field Strength

Just complete a single box, and the converter fill in everything else automatically.

Other offers

MW 16x9 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 16x9 / N38 - cylindrical magnet

7.36 zł brutto / pcs
UMN 410x44x15 / N52 - knife holder
Product available Ships today (order by 14:00)

UMN 410x44x15 / N52 - knife holder

98.99 zł brutto / pcs
SM 25x325 [2xM8] / N52 - magnetic separator
Product available Ships today (order by 14:00)

SM 25x325 [2xM8] / N52 - magnetic separator

1094.70 zł brutto / pcs
UMT 12x20 blue / N38 - board holder
Product available Ships today (order by 14:00)

UMT 12x20 blue / N38 - board holder

1.894 zł brutto / pcs
The ring-shaped magnet MP 20x8x5 / N38 is created for permanent mounting, where glue might fail or be insufficient. 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 5.82 kg works great as a cabinet closure, speaker holder, or spacer element in devices.
This is a crucial issue when working with model MP 20x8x5 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. 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 is not sufficient for rain. 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 magnets in hermetic housing or additional protection with varnish.
The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.
This model is characterized by dimensions Ø20x5 mm and a weight of 9.9 g. The key parameter here is the holding force amounting to approximately 5.82 kg (force ~57.06 N). The mounting hole diameter is precisely 8 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.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • Their power is durable, and after approximately ten years it drops only by ~1% (theoretically),
  • Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
  • Thanks to the glossy finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an clean appearance,
  • Magnetic induction on the top side of the magnet is impressive,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of detailed forming as well as adjusting to concrete needs,
  • Universal use in advanced technology sectors – they are commonly used in mass storage devices, motor assemblies, medical equipment, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and 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 - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing nuts and complicated forms in magnets, we recommend using casing - magnetic mount.
  • Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Additionally, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Magnetic strength at its maximum – what it depends on?

The force parameter is a result of laboratory testing conducted under standard conditions:
  • on a plate made of structural steel, optimally conducting the magnetic field
  • whose transverse dimension reaches at least 10 mm
  • characterized by smoothness
  • with zero gap (no impurities)
  • for force applied at a right angle (in the magnet axis)
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Holding efficiency impacted by working environment parameters, including (from most important):
  • Clearance – existence of any layer (paint, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be wasted into the air.
  • Steel type – low-carbon steel gives the best results. Higher carbon content lower magnetic permeability and lifting capacity.
  • Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets
Data carriers

Avoid bringing magnets near a purse, laptop, or screen. The magnetic field can destroy these devices and erase data from cards.

Metal Allergy

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction occurs, immediately stop working with magnets and wear gloves.

Dust is flammable

Fire hazard: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.

Demagnetization risk

Do not overheat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Shattering risk

Protect your eyes. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.

Adults only

Always keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets connecting inside the body are very dangerous.

Life threat

Patients with a heart stimulator must keep an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.

Magnetic interference

GPS units and mobile phones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Pinching danger

Pinching hazard: The pulling power is so great that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Handling rules

Before starting, check safety instructions. Sudden snapping can break the magnet or injure your hand. Think ahead.

Safety First! Learn more about risks in the article: Safety of working with magnets.