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MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

lamellar magnet

Catalog no 020154

GTIN/EAN: 5906301811602

5.00
Load capacity 11.35 kg / 111.37 N Magnetic Induction 249.11 mT / 2491 Gs
length
40 mm [±0,1 mm]
Width
15 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
22.5 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check technical data »

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Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

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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Technical of the product - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

properties
properties values
Cat. no. 020154
GTIN/EAN 5906301811602
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 40 mm [±0,1 mm]
Width 15 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 22.5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 11.35 kg / 111.37 N
Magnetic Induction ~ ? 249.11 mT / 2491 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x15x5x2[7/3.5] / N38 - lamellar 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 analysis of the product - technical parameters

Presented information constitute the outcome of a physical calculation. Values are based on algorithms for the material Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (force vs distance) - power drop
MPL 40x15x5x2[7/3.5] / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2490 Gs
249.0 mT
 11.35 kg / 25.02 pounds
11350.0 g / 111.3 N
 critical level
1 mm 2306 Gs
230.6 mT
 9.73 kg / 21.45 pounds
9731.3 g / 95.5 N
 medium risk
2 mm 2095 Gs
209.5 mT
 8.03 kg / 17.70 pounds
8028.8 g / 78.8 N
 medium risk
3 mm 1877 Gs
187.7 mT
 6.45 kg / 14.21 pounds
6445.4 g / 63.2 N
 medium risk
5 mm 1472 Gs
147.2 mT
 3.97 kg / 8.74 pounds
3965.1 g / 38.9 N
 medium risk
10 mm 792 Gs
79.2 mT
 1.15 kg / 2.53 pounds
1147.1 g / 11.3 N
 low risk
15 mm 454 Gs
45.4 mT
 0.38 kg / 0.83 pounds
376.9 g / 3.7 N
 low risk
20 mm 278 Gs
27.8 mT
 0.14 kg / 0.31 pounds
141.4 g / 1.4 N
 low risk
30 mm 122 Gs
12.2 mT
 0.03 kg / 0.06 pounds
27.0 g / 0.3 N
 low risk
50 mm 35 Gs
3.5 mT
 0.00 kg / 0.01 pounds
2.3 g / 0.0 N
 low risk
Grip strength weakens sharply with every mm of spacing. Note that even a microscopic distance (e.g., dirt, paint, rust) noticeably weakens the grip. Magnetic products hold most effectively during direct contact; gap drastically cuts the force. Analyze how rapidly the load capacity fall, when the magnet does not adhere tightly to the metal substrate. When designing the assembly, avoid additional spacers.

Table 2: Sliding force (wall)
MPL 40x15x5x2[7/3.5] / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.27 kg / 5.00 pounds
2270.0 g / 22.3 N
1 mm Stal (~0.2) 1.95 kg / 4.29 pounds
1946.0 g / 19.1 N
2 mm Stal (~0.2) 1.61 kg / 3.54 pounds
1606.0 g / 15.8 N
3 mm Stal (~0.2) 1.29 kg / 2.84 pounds
1290.0 g / 12.7 N
5 mm Stal (~0.2) 0.79 kg / 1.75 pounds
794.0 g / 7.8 N
10 mm Stal (~0.2) 0.23 kg / 0.51 pounds
230.0 g / 2.3 N
15 mm Stal (~0.2) 0.08 kg / 0.17 pounds
76.0 g / 0.7 N
20 mm Stal (~0.2) 0.03 kg / 0.06 pounds
28.0 g / 0.3 N
30 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The following data indicates the estimated shear load necessary to cause the shifting of the magnet downwards against a upright steel plate (considering standard friction). This value varies with the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
3.41 kg / 7.51 pounds
3405.0 g / 33.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.27 kg / 5.00 pounds
2270.0 g / 22.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.14 kg / 2.50 pounds
1135.0 g / 11.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
5.68 kg / 12.51 pounds
5675.0 g / 55.7 N
When placing a magnet on a upright wall (e.g., a car body), it will maintain barely approx. 20%-30% of its maximum pull force. Gravity as well as a weak degree of grip cause that products slide down easier than they detach. Want to create a vertical fastening? Note that the sliding force is much weaker than the maximum static pull force. On a painted metal, the holder will slide down under a noticeably lighter weight. Application of an anti-slip layer can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MPL 40x15x5x2[7/3.5] / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.57 kg / 1.25 pounds
567.5 g / 5.6 N
1 mm
13%
 1.42 kg / 3.13 pounds
1418.8 g / 13.9 N
2 mm
25%
 2.84 kg / 6.26 pounds
2837.5 g / 27.8 N
3 mm
38%
 4.26 kg / 9.38 pounds
4256.3 g / 41.8 N
5 mm
63%
 7.09 kg / 15.64 pounds
7093.8 g / 69.6 N
10 mm
100%
 11.35 kg / 25.02 pounds
11350.0 g / 111.3 N
11 mm
100%
 11.35 kg / 25.02 pounds
11350.0 g / 111.3 N
12 mm
100%
 11.35 kg / 25.02 pounds
11350.0 g / 111.3 N
A too thin steel is incapable of conduct the full magnetic flux, which weakens actual performance of the magnet. Should you mount a strong magnet to a thin surface, the flux will pass right through and the holding will be smaller. To squeeze the maximum of this neodymium's power, you need a suitably thick element of steel. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the magnet holds weaker. We advise picking the steel thickness according to the table below.

Table 5: Thermal resistance (stability) - resistance threshold
MPL 40x15x5x2[7/3.5] / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 11.35 kg / 25.02 pounds
11350.0 g / 111.3 N
 OK
40 °C -2.2% 11.10 kg / 24.47 pounds
11100.3 g / 108.9 N
 OK
60 °C -4.4% 10.85 kg / 23.92 pounds
10850.6 g / 106.4 N
80 °C -6.6% 10.60 kg / 23.37 pounds
10600.9 g / 104.0 N
100 °C -28.8% 8.08 kg / 17.82 pounds
8081.2 g / 79.3 N
Ordinary NdFeB products lose parameters after exceeding the maximum temperature. Avoid high temperatures – high temperature can permanently demagnetize this magnet. With increasing heat, the magnet's power briefly decreases. Refrain from using this magnet near heat sources higher than its safe range. Too high temperature will lead to permanent loss of magnetic properties.
*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 40x15x5x2[7/3.5] / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 22.94 kg / 50.58 pounds
3 961 Gs
3.44 kg / 7.59 pounds
3441 g / 33.8 N
 N/A
1 mm 21.37 kg / 47.11 pounds
4 807 Gs
3.21 kg / 7.07 pounds
3205 g / 31.4 N
 19.23 kg / 42.40 pounds
~0 Gs
2 mm 19.67 kg / 43.37 pounds
4 612 Gs
2.95 kg / 6.50 pounds
2951 g / 28.9 N
 17.70 kg / 39.03 pounds
~0 Gs
3 mm 17.94 kg / 39.55 pounds
4 404 Gs
2.69 kg / 5.93 pounds
2691 g / 26.4 N
 16.15 kg / 35.59 pounds
~0 Gs
5 mm 14.58 kg / 32.15 pounds
3 971 Gs
2.19 kg / 4.82 pounds
2187 g / 21.5 N
 13.12 kg / 28.93 pounds
~0 Gs
10 mm 8.01 kg / 17.67 pounds
2 944 Gs
1.20 kg / 2.65 pounds
1202 g / 11.8 N
 7.21 kg / 15.90 pounds
~0 Gs
20 mm 2.32 kg / 5.11 pounds
1 583 Gs
0.35 kg / 0.77 pounds
348 g / 3.4 N
 2.09 kg / 4.60 pounds
~0 Gs
50 mm 0.12 kg / 0.26 pounds
359 Gs
0.02 kg / 0.04 pounds
18 g / 0.2 N
 0.11 kg / 0.24 pounds
~0 Gs
60 mm 0.05 kg / 0.12 pounds
243 Gs
0.01 kg / 0.02 pounds
8 g / 0.1 N
 0.05 kg / 0.11 pounds
~0 Gs
70 mm 0.03 kg / 0.06 pounds
171 Gs
0.00 kg / 0.01 pounds
4 g / 0.0 N
 0.02 kg / 0.05 pounds
~0 Gs
80 mm 0.01 kg / 0.03 pounds
124 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.03 pounds
~0 Gs
90 mm 0.01 kg / 0.02 pounds
92 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.01 pounds
70 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnetic products attract each other from a much further distance than a neodymium and metal combination. Such a system of magnet-to-magnet produces a massive flux and a further horizon of action. Designing a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Be careful that when connecting a pair of magnets, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still impressive.
*The magnetic induction between like poles drops to ~0 Gs at the midpoint of the gap (due to field cancellation).
Attention: Estimates demonstrate shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MPL 40x15x5x2[7/3.5] / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 10.5 cm
Hearing aid 10 Gs (1.0 mT) 8.0 cm
Mechanical watch 20 Gs (2.0 mT) 6.5 cm
Mobile device 40 Gs (4.0 mT) 5.0 cm
Remote 50 Gs (5.0 mT) 4.5 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Powerful magnet radiation is a serious hazard to electronic devices as well as pacemakers. These neodymiums generate a field that destroys function of digital equipment. Notice: the invisible magnetic field passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MPL 40x15x5x2[7/3.5] / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.36 km/h
(6.49 m/s)
 0.47 J
30 mm 24.60 km/h
(6.83 m/s)
 0.53 J
50 mm 24.64 km/h
(6.84 m/s)
 0.53 J
100 mm 24.65 km/h
(6.85 m/s)
 0.53 J
Magnetic elements are delicate – a collision with steel can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can cause material chips or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Anti-corrosion coating durability
MPL 40x15x5x2[7/3.5] / 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MPL 40x15x5x2[7/3.5] / N38

Parameter Value SI Unit / Description
Magnetic Flux 14 969 Mx 149.7 µWb
Pc Coefficient 0.26 Low (Flat)
Total magnetic flux emitted by the magnet pole. Key data when building generators as well as sensors. Pc value determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 40x15x5x2[7/3.5] / N38

Environment Effective steel pull Effect
Air (land) 11.35 kg Standard
Water (riverbed) 13.00 kg
(+1.65 kg buoyancy gain)
+14.5%
Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

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

2. Steel saturation

*Thin metal sheet (e.g. computer case) significantly weakens the holding force.

3. Thermal stability

*For N38 grade, the max working temp 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.

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: 020154-2026
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This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x15x5 mm and a weight of 22.5 g, guarantees premium class connection. As a block magnet with high power (approx. 11.35 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 11.35 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 11.35 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (40x15 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 40x15x5 mm, which, at a weight of 22.5 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 11.35 kg (force ~111.37 N), which, with such a flat shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Pros and cons of neodymium magnets.

Pros

Apart from their superior holding force, neodymium magnets have these key benefits:
  • Their strength is maintained, and after around ten years it drops only by ~1% (according to research),
  • Magnets very well resist against loss of magnetization caused by ambient magnetic noise,
  • The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Magnetic induction on the top side of the magnet is very high,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
  • Thanks to the potential of precise shaping and customization to custom solutions, magnetic components can be produced in a broad palette of shapes and sizes, which amplifies use scope,
  • Fundamental importance in future technologies – they are utilized in HDD drives, drive modules, medical devices, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complex forms in magnets, we propose using casing - magnetic mount.
  • Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these magnets are able to be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum magnetic pulling force – what affects it?

The lifting capacity listed is a theoretical maximum value conducted under standard conditions:
  • on a plate made of mild steel, optimally conducting the magnetic flux
  • whose thickness reaches at least 10 mm
  • with an ground contact surface
  • under conditions of gap-free contact (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • in stable room temperature

Practical lifting capacity: influencing factors

During everyday use, the real power depends on a number of factors, listed from most significant:
  • Distance (between the magnet and the plate), because even a tiny clearance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Base massiveness – too thin sheet does not close the flux, causing part of the power to be wasted to the other side.
  • Material composition – different alloys attracts identically. High carbon content weaken the attraction effect.
  • Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however 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.

Precautions when working with NdFeB magnets
Magnetic media

Powerful magnetic fields can destroy records on payment cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.

Compass and GPS

Navigation devices and mobile phones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.

Serious injuries

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

Machining danger

Drilling and cutting of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Conscious usage

Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Allergy Warning

Some people suffer from a sensitization to nickel, which is the common plating for neodymium magnets. Frequent touching may cause skin redness. We suggest wear safety gloves.

Power loss in heat

Avoid heat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Material brittleness

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets will cause them shattering into shards.

Pacemakers

Life threat: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Adults only

Always store magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are very dangerous.

Caution! Want to know more? Check our post: Are neodymium magnets dangerous?