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

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

lamellar magnet

Catalog no 020154

GTIN/EAN: 5906301811602

5.00

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

view technical specifications »

15.07 ZŁ with VAT / pcs + price for transport

12.25 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
12.25 ZŁ
15.07 ZŁ
price from 50 pcs
11.51 ZŁ
14.16 ZŁ
price from 210 pcs
10.78 ZŁ
13.26 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Do you have problems deciding?

Give us a call +48 22 499 98 98 alternatively drop us a message through request form the contact section.
Parameters along with shape of a neodymium magnet can be estimated on our online calculation tool.

Same-day processing for orders placed before 14:00.

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
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 modeling of the magnet - data

These data represent the outcome of a physical analysis. Values are based on algorithms for the class Nd2Fe14B. Operational performance might slightly differ from theoretical values. Use these calculations as a reference point when designing systems.

Table 1: Static force (force vs gap) - 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
 crushing
1 mm 2306 Gs
230.6 mT
 9.73 kg / 21.45 pounds
9731.3 g / 95.5 N
 warning
2 mm 2095 Gs
209.5 mT
 8.03 kg / 17.70 pounds
8028.8 g / 78.8 N
 warning
3 mm 1877 Gs
187.7 mT
 6.45 kg / 14.21 pounds
6445.4 g / 63.2 N
 warning
5 mm 1472 Gs
147.2 mT
 3.97 kg / 8.74 pounds
3965.1 g / 38.9 N
 warning
10 mm 792 Gs
79.2 mT
 1.15 kg / 2.53 pounds
1147.1 g / 11.3 N
 weak grip
15 mm 454 Gs
45.4 mT
 0.38 kg / 0.83 pounds
376.9 g / 3.7 N
 weak grip
20 mm 278 Gs
27.8 mT
 0.14 kg / 0.31 pounds
141.4 g / 1.4 N
 weak grip
30 mm 122 Gs
12.2 mT
 0.03 kg / 0.06 pounds
27.0 g / 0.3 N
 weak grip
50 mm 35 Gs
3.5 mT
 0.00 kg / 0.01 pounds
2.3 g / 0.0 N
 weak grip
Grip strength drops significantly with every subsequent millimeter of gap. Note that even the smallest gap (e.g., dirt, paint, dust) strongly reduces the pull force. Magnets hold most effectively in perfect adhesion; air break weakens the force. Notice how rapidly the parameters drop, when the magnet does not adhere directly to the steel surface. When calculating the arrangement, eliminate redundant distances.

Table 2: Vertical capacity (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
This section defines the theoretical shear load necessary to initiate the slippage of the magnet down on a vertical metal surface (considering standard friction coefficient). The holding force is relative to the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - 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 hanging a magnet on a upright surface (e.g., a board), it will maintain just approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient cause that magnets move down faster than they pull off. Designing a hanger? Note that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will slip down under a noticeably lighter cargo. Using a rubber layer can significantly increase the grip.

Table 4: Material efficiency (saturation) - 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 thin metal plate is unable to absorb the entire magnetic field, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the field will pass right through and the holding will be smaller. To utilize the maximum of this neodymium's potential, you require a sufficiently solid backing of metal. The saturation effect causes that on delicate walls (e.g., car bodies), the holder holds weaker. We advise picking the steel cross-section from these parameters.

Table 5: Thermal resistance (stability) - power drop
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
Standard neodymium magnets lose strength after exceeding the maximum temperature. Protect against heat – heat can permanently demagnetize this product. As the temperature rises, the magnet's force temporarily lowers. Do not use this product close to heaters exceeding its safe range. Ignoring the limit will lead to irreversible degradation of magnetism.
*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than long magnets. Warning indicator in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 40x15x5x2[7/3.5] / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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 significantly greater distance than a magnet and steel combination. The connection of two magnets generates a stronger field and a wider radius of performance. Designing a solid fastener? Apply two magnets instead of a neodymium and a steel. Be careful that when bringing together two magnets, the impact force is huge. The levitation is marginally weaker than the connection force, but still impressive.
*Field value for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Note: Results demonstrate sliding force of dual identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (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
Phone / Smartphone 40 Gs (4.0 mT) 5.0 cm
Car key 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
Extremely neodym field is a serious hazard to electronic devices and pacemakers. These NdFeB products generate a flux that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field acts through matter and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MPL 40x15x5x2[7/3.5] / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.04 km/h
(6.68 m/s)
 0.50 J
30 mm 39.29 km/h
(10.91 m/s)
 1.34 J
50 mm 50.66 km/h
(14.07 m/s)
 2.23 J
100 mm 71.63 km/h
(19.90 m/s)
 4.45 J
Neodymium magnets are very brittle – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Use safety goggles when handling with powerful specimens.

Table 9: Coating parameters (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: Construction 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)
Flux value passing through the magnet pole. Essential parameter when building generators as well as sensors. Pc value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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%
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. Buoyancy helps in lifting finds.
1. Vertical hold

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

2. Steel thickness impact

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

3. Temperature resistance

*For N38 material, 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

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 specification and ecology
Elemental analysis
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Environmental data
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 020154-2026
Quick Unit Converter
Force (pull)
Magnetic Induction
Input your value in a single field to see the conversion for the other units immediately.

Other proposals

MW 3x1 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 3x1 / N38 - cylindrical magnet

0.1353 ZŁ brutto / pcs
SM 25x250 [2xM8] / N52 - magnetic separator
Product available Ships today (order by 14:00)

SM 25x250 [2xM8] / N52 - magnetic separator

762.60 ZŁ brutto / pcs
MPL 45x25x10 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 45x25x10 / N38 - lamellar magnet

35.01 ZŁ brutto / pcs
BM 510x180x70 [4x M8] - magnetic beam
Product available Ships today (order by 14:00)

BM 510x180x70 [4x M8] - magnetic beam

5253.21 ZŁ brutto / pcs
This product is a very powerful 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 the highest quality connection. As a magnetic bar with high power (approx. 11.35 kg), this product is available off-the-shelf from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 40x15x5x2[7/3.5] / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of wind generators and material handling systems. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 40x15x5x2[7/3.5] / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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).
Standardly, the MPL 40x15x5x2[7/3.5] / N38 model is magnetized axially (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 40 mm (length), 15 mm (width), and 5 mm (thickness). It is a magnetic block with dimensions 40x15x5 mm and a self-weight of 22.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Pros as well as cons of rare earth magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They do not lose strength, even during nearly 10 years – the drop in power is only ~1% (according to tests),
  • Magnets very well resist against demagnetization caused by foreign field sources,
  • Thanks to the shiny finish, the layer of nickel, gold, or silver gives an professional appearance,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
  • Possibility of custom modeling as well as optimizing to individual conditions,
  • Fundamental importance in modern technologies – they are utilized in magnetic memories, drive modules, diagnostic systems, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in compact constructions

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience 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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • Limited possibility of creating threads in the magnet and complicated shapes - preferred is cover - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
  • With large orders the cost of neodymium magnets can be a barrier,

Lifting parameters

Best holding force of the magnet in ideal parameters – what affects it?

The specified lifting capacity refers to the maximum value, obtained under optimal environment, specifically:
  • using a plate made of high-permeability steel, acting as a magnetic yoke
  • possessing a massiveness of min. 10 mm to avoid saturation
  • with a surface free of scratches
  • under conditions of ideal adhesion (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • at room temperature

Practical lifting capacity: influencing factors

During everyday use, the real power depends on several key aspects, presented from most significant:
  • Clearance – the presence of any layer (rust, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Cast iron may attract less.
  • Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Keep away from computers

Device Safety: Strong magnets can damage data carriers and delicate electronics (heart implants, medical aids, timepieces).

Do not drill into magnets

Combustion risk: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Impact on smartphones

Remember: neodymium magnets produce a field that interferes with sensitive sensors. Maintain a safe distance from your mobile, device, and navigation systems.

Handling rules

Handle magnets with awareness. Their powerful strength can surprise even professionals. Plan your moves and respect their force.

Swallowing risk

Product intended for adults. Small elements can be swallowed, leading to serious injuries. Store out of reach of kids and pets.

Bone fractures

Protect your hands. Two large magnets will join instantly with a force of massive weight, destroying everything in their path. Be careful!

Metal Allergy

Some people suffer from a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Frequent touching can result in an allergic reaction. We suggest use safety gloves.

Operating temperature

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Protective goggles

Neodymium magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets leads to them breaking into shards.

Health Danger

Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

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