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MPL 25x12.5x5 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

lamellar magnet

Catalog no 020136

GTIN/EAN: 5906301811428

5.00

length

25 mm [±0,1 mm]

Width

12.5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.72 g

Magnetization Direction

↑ axial

Load capacity

7.72 kg / 75.74 N

Magnetic Induction

299.70 mT / 2997 Gs

Coating

[NiCuNi] Nickel

view properties »

4.92 ZŁ with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

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Parameters along with structure of a neodymium magnet can be tested with our modular calculator.

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Product card - MPL 25x12.5x5 / N38 - lamellar magnet

Specification / characteristics - MPL 25x12.5x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020136
GTIN/EAN	5906301811428
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	25 mm [±0,1 mm]
Width	12.5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	11.72 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.72 kg / 75.74 N
Magnetic Induction ~ ?	299.70 mT / 2997 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 25x12.5x5 / 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

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 simulation of the magnet - technical parameters

Presented values are the outcome of a engineering calculation. Results rely on models for the material Nd₂Fe₁₄B. Real-world parameters might slightly differ. Use these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MPL 25x12.5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2996 Gs 299.6 mT	7.72 kg / 17.02 lbs 7720.0 g / 75.7 N	medium risk
1 mm	2705 Gs 270.5 mT	6.29 kg / 13.87 lbs 6292.6 g / 61.7 N	medium risk
2 mm	2384 Gs 238.4 mT	4.89 kg / 10.77 lbs 4886.6 g / 47.9 N	medium risk
3 mm	2067 Gs 206.7 mT	3.67 kg / 8.10 lbs 3674.4 g / 36.0 N	medium risk
5 mm	1517 Gs 151.7 mT	1.98 kg / 4.36 lbs 1979.6 g / 19.4 N	low risk
10 mm	702 Gs 70.2 mT	0.42 kg / 0.93 lbs 424.1 g / 4.2 N	low risk
15 mm	355 Gs 35.5 mT	0.11 kg / 0.24 lbs 108.6 g / 1.1 N	low risk
20 mm	198 Gs 19.8 mT	0.03 kg / 0.07 lbs 33.6 g / 0.3 N	low risk
30 mm	76 Gs 7.6 mT	0.01 kg / 0.01 lbs 5.0 g / 0.0 N	low risk
50 mm	20 Gs 2.0 mT	0.00 kg / 0.00 lbs 0.3 g / 0.0 N	low risk

Grip strength weakens drastically with every mm of gap. Remember that every additional insulation layer (e.g., dirt, varnish, rust) strongly weakens the grip. Magnetic products work strongest at the point of direct contact; distance weakens the force. Analyze how quickly the load capacity plummet, when the product does not touch tightly to the steel surface. When designing the mounting, avoid additional spacers.

Table 2: Shear load (wall)
MPL 25x12.5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.54 kg / 3.40 lbs 1544.0 g / 15.1 N
1 mm	Stal (~0.2)	1.26 kg / 2.77 lbs 1258.0 g / 12.3 N
2 mm	Stal (~0.2)	0.98 kg / 2.16 lbs 978.0 g / 9.6 N
3 mm	Stal (~0.2)	0.73 kg / 1.62 lbs 734.0 g / 7.2 N
5 mm	Stal (~0.2)	0.40 kg / 0.87 lbs 396.0 g / 3.9 N
10 mm	Stal (~0.2)	0.08 kg / 0.19 lbs 84.0 g / 0.8 N
15 mm	Stal (~0.2)	0.02 kg / 0.05 lbs 22.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 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

The table below defines the theoretical weight limit required to cause the downward movement of the magnet down on a upright steel wall (considering typical friction coefficient). This parameter is a function of the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 25x12.5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.32 kg / 5.11 lbs 2316.0 g / 22.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.54 kg / 3.40 lbs 1544.0 g / 15.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.77 kg / 1.70 lbs 772.0 g / 7.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.86 kg / 8.51 lbs 3860.0 g / 37.9 N

When hanging a element on a vertical surface (e.g., a car body), it will maintain barely approx. 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient influence the fact that holders slip faster than they detach. Designing a vertical fastening? Note that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will slide down under a much lighter load. Utilizing a rubberized coating can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MPL 25x12.5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.77 kg / 1.70 lbs 772.0 g / 7.6 N
1 mm	25%	1.93 kg / 4.25 lbs 1930.0 g / 18.9 N
2 mm	50%	3.86 kg / 8.51 lbs 3860.0 g / 37.9 N
3 mm	75%	5.79 kg / 12.76 lbs 5790.0 g / 56.8 N
5 mm	100%	7.72 kg / 17.02 lbs 7720.0 g / 75.7 N
10 mm	100%	7.72 kg / 17.02 lbs 7720.0 g / 75.7 N
11 mm	100%	7.72 kg / 17.02 lbs 7720.0 g / 75.7 N
12 mm	100%	7.72 kg / 17.02 lbs 7720.0 g / 75.7 N

A thin sheet is unable to take in the entire magnetic field, which wastes potential of the magnet. Should you mount a strong magnet to a weak sheet, the flux will pass right through and the holding will be smaller. To achieve the maximum of this neodymium's potential, you require a sufficiently solid backing of metal. The saturation phenomenon causes that on thin elements (e.g., appliance housings), the holder shows lower pull force. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 25x12.5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.72 kg / 17.02 lbs 7720.0 g / 75.7 N	OK
40 °C	-2.2%	7.55 kg / 16.65 lbs 7550.2 g / 74.1 N	OK
60 °C	-4.4%	7.38 kg / 16.27 lbs 7380.3 g / 72.4 N
80 °C	-6.6%	7.21 kg / 15.90 lbs 7210.5 g / 70.7 N
100 °C	-28.8%	5.50 kg / 12.12 lbs 5496.6 g / 53.9 N

Ordinary NdFeB products irreversibly lose parameters past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly demagnetize this product. With every degree above norm, the magnet's capacity briefly lowers. Do not use this product near heat sources exceeding its safe range. Too high temperature will lead to permanent loss of magnetic properties.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress compared to rod magnets. Warning indicator in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 25x12.5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	17.29 kg / 38.13 lbs 4 511 Gs	2.59 kg / 5.72 lbs 2594 g / 25.4 N	N/A
1 mm	15.73 kg / 34.68 lbs 5 715 Gs	2.36 kg / 5.20 lbs 2360 g / 23.2 N	14.16 kg / 31.22 lbs ~0 Gs
2 mm	14.10 kg / 31.08 lbs 5 410 Gs	2.11 kg / 4.66 lbs 2114 g / 20.7 N	12.69 kg / 27.97 lbs ~0 Gs
3 mm	12.48 kg / 27.52 lbs 5 091 Gs	1.87 kg / 4.13 lbs 1872 g / 18.4 N	11.23 kg / 24.77 lbs ~0 Gs
5 mm	9.52 kg / 20.99 lbs 4 446 Gs	1.43 kg / 3.15 lbs 1428 g / 14.0 N	8.57 kg / 18.89 lbs ~0 Gs
10 mm	4.43 kg / 9.78 lbs 3 034 Gs	0.67 kg / 1.47 lbs 665 g / 6.5 N	3.99 kg / 8.80 lbs ~0 Gs
20 mm	0.95 kg / 2.09 lbs 1 404 Gs	0.14 kg / 0.31 lbs 142 g / 1.4 N	0.85 kg / 1.88 lbs ~0 Gs
50 mm	0.03 kg / 0.06 lbs 238 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs
60 mm	0.01 kg / 0.02 lbs 153 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs
70 mm	0.01 kg / 0.01 lbs 103 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.01 lbs 73 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 53 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 40 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets interact from a much further distance than a magnet and sheet combination. The setup of two magnets generates a stronger field and a wider radius of operation. Designing a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the pinch force is huge. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
Attention: Figures show shear force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MPL 25x12.5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	4.0 cm
Remote	50 Gs (5.0 mT)	4.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Extremely neodym field is a real danger to electronics as well as medical implants. These neodymiums generate a field that disrupts operation of digital equipment. Notice: the invisible magnetic field penetrates the body and plastic. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, remotes, membranes, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MPL 25x12.5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	26.76 km/h (7.43 m/s)	0.32 J
30 mm	44.85 km/h (12.46 m/s)	0.91 J
50 mm	57.88 km/h (16.08 m/s)	1.51 J
100 mm	81.85 km/h (22.74 m/s)	3.03 J

Magnetic elements are prone to chipping – a violent impact against metal can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments or injury to skin. Always hold the magnet 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. Wear eye protection when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MPL 25x12.5x5 / 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: Electrical data (Flux)
MPL 25x12.5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 639 Mx	96.4 µWb
P_c Coefficient	0.35	Low (Flat)

Total magnetic flux passing through the pole surface. Key data in coil applications and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MPL 25x12.5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.72 kg	Standard
Water (riverbed)	8.84 kg (+1.12 kg buoyancy gain)	+14.5%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Wall mount (shear)

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

2. Steel saturation

*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.35

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 P_c (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 P_c 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

Chemical composition

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: 020136-2026

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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 25x12.5x5 mm and a weight of 11.72 g, guarantees the highest quality connection. This rectangular block with a force of 75.74 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

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. To separate the MPL 25x12.5x5 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. 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 wind generators and material handling systems. Thanks to the flat surface and high force (approx. 7.72 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 25x12.5x5 / N38, it is best to use strong epoxy glues (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. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

This model is characterized by dimensions 25x12.5x5 mm, which, at a weight of 11.72 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 7.72 kg (force ~75.74 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Besides their exceptional field intensity, neodymium magnets offer the following advantages:

They have unchanged lifting capacity, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
They are resistant to demagnetization induced by external field influence,
In other words, due to the aesthetic surface of nickel, the element is aesthetically pleasing,
Neodymium magnets achieve maximum magnetic induction on a small area, which ensures high operational effectiveness,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Due to the possibility of accurate molding and customization to custom projects, magnetic components can be created in a broad palette of forms and dimensions, which makes them more universal,
Fundamental importance in modern technologies – they serve a role in HDD drives, brushless drives, medical devices, as well as multitasking production systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

What to avoid - cons of neodymium magnets: application proposals

At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Limited possibility of producing nuts in the magnet and complex shapes - preferred is casing - magnetic holder.
Health risk to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child safety. Additionally, tiny parts of these magnets are able to complicate diagnosis medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

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

Magnet power was defined for the most favorable conditions, assuming:

on a plate made of structural steel, optimally conducting the magnetic field
with a thickness of at least 10 mm
with an ideally smooth touching surface
under conditions of gap-free contact (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
at ambient temperature room level

What influences lifting capacity in practice

In real-world applications, the actual lifting capacity depends on a number of factors, ranked from crucial:

Gap (between the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Material composition – different alloys attracts identically. High carbon content weaken the attraction effect.
Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal weaken the grip.
Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the load capacity.

Safety rules for work with neodymium magnets

Magnet fragility

Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. We recommend safety glasses.

ICD Warning

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Serious injuries

Pinching hazard: The pulling power is so great that it can result in hematomas, crushing, and broken bones. Use thick gloves.

Machining danger

Dust generated during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

This is not a toy

NdFeB magnets are not intended for children. Swallowing several magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.

Heat warning

Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Powerful field

Be careful. Rare earth magnets act from a distance and snap with huge force, often quicker than you can react.

Magnetic interference

A powerful magnetic field negatively affects the functioning of compasses in phones and navigation systems. Maintain magnets near a device to prevent breaking the sensors.

Cards and drives

Avoid bringing magnets near a wallet, laptop, or TV. The magnetic field can permanently damage these devices and erase data from cards.

Sensitization to coating

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, prevent direct skin contact or choose versions in plastic housing.

Danger! Need more info? Check our post: Are neodymium magnets dangerous?

MPL 25x12.5x5 / N38 - lamellar magnet

Product card - MPL 25x12.5x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - technical parameters

Table 1: Static pull force (force vs gap) - interaction chart MPL 25x12.5x5 / N38

Table 2: Shear load (wall) MPL 25x12.5x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 25x12.5x5 / N38

Table 4: Material efficiency (saturation) - power losses MPL 25x12.5x5 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MPL 25x12.5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MPL 25x12.5x5 / N38

Table 7: Hazards (electronics) - precautionary measures MPL 25x12.5x5 / N38

Table 8: Dynamics (cracking risk) - collision effects MPL 25x12.5x5 / N38

Table 9: Anti-corrosion coating durability MPL 25x12.5x5 / N38

Table 10: Electrical data (Flux) MPL 25x12.5x5 / N38

Table 11: Underwater work (magnet fishing) MPL 25x12.5x5 / N38

1. Wall mount (shear)

2. Steel saturation

3. Heat tolerance

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

Chemical composition

Sustainability

Force (pull)

Magnetic Field

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Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Holding force characteristics

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

What influences lifting capacity in practice

Safety rules for work with neodymium magnets

Magnet fragility

ICD Warning

Serious injuries

Machining danger

This is not a toy

Heat warning

Powerful field

Magnetic interference

Cards and drives

Sensitization to coating

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MPL 25x12.5x5 / N38

Table 2: Shear load (wall)
MPL 25x12.5x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 25x12.5x5 / N38

Table 4: Material efficiency (saturation) - power losses
MPL 25x12.5x5 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 25x12.5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 25x12.5x5 / N38

Table 7: Hazards (electronics) - precautionary measures
MPL 25x12.5x5 / N38

Table 8: Dynamics (cracking risk) - collision effects
MPL 25x12.5x5 / N38

Table 9: Anti-corrosion coating durability
MPL 25x12.5x5 / N38

Table 10: Electrical data (Flux)
MPL 25x12.5x5 / N38

Table 11: Underwater work (magnet fishing)
MPL 25x12.5x5 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.