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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

check properties »

4.92 ZŁ with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

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Technical - 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

Technical modeling of the assembly - report

The following data represent the result of a engineering simulation. Values are based on algorithms for the class Nd₂Fe₁₄B. Real-world conditions may deviate from the simulation results. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - power drop
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 pounds 7720.0 g / 75.7 N	warning
1 mm	2705 Gs 270.5 mT	6.29 kg / 13.87 pounds 6292.6 g / 61.7 N	warning
2 mm	2384 Gs 238.4 mT	4.89 kg / 10.77 pounds 4886.6 g / 47.9 N	warning
3 mm	2067 Gs 206.7 mT	3.67 kg / 8.10 pounds 3674.4 g / 36.0 N	warning
5 mm	1517 Gs 151.7 mT	1.98 kg / 4.36 pounds 1979.6 g / 19.4 N	low risk
10 mm	702 Gs 70.2 mT	0.42 kg / 0.93 pounds 424.1 g / 4.2 N	low risk
15 mm	355 Gs 35.5 mT	0.11 kg / 0.24 pounds 108.6 g / 1.1 N	low risk
20 mm	198 Gs 19.8 mT	0.03 kg / 0.07 pounds 33.6 g / 0.3 N	low risk
30 mm	76 Gs 7.6 mT	0.01 kg / 0.01 pounds 5.0 g / 0.0 N	low risk
50 mm	20 Gs 2.0 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	low risk

Grip strength weakens drastically with every subsequent millimeter of distance. Keep in mind that even a microscopic distance (e.g., contamination, varnish, veneer) noticeably reduces the pull force. Neodymiums work strongest at the point of direct contact; distance nullifies the force. Notice how flashily the parameters fall, when the product does not adhere tightly to the steel surface. When planning the assembly, avoid additional spacers.

Table 2: Slippage load (vertical surface)
MPL 25x12.5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.54 kg / 3.40 pounds 1544.0 g / 15.1 N
1 mm	Stal (~0.2)	1.26 kg / 2.77 pounds 1258.0 g / 12.3 N
2 mm	Stal (~0.2)	0.98 kg / 2.16 pounds 978.0 g / 9.6 N
3 mm	Stal (~0.2)	0.73 kg / 1.62 pounds 734.0 g / 7.2 N
5 mm	Stal (~0.2)	0.40 kg / 0.87 pounds 396.0 g / 3.9 N
10 mm	Stal (~0.2)	0.08 kg / 0.19 pounds 84.0 g / 0.8 N
15 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section shows the approximate shear load necessary to initiate the slippage of the magnet downwards on a upright metal surface (assuming standard friction). This parameter depends on the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - 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 pounds 2316.0 g / 22.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.54 kg / 3.40 pounds 1544.0 g / 15.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.77 kg / 1.70 pounds 772.0 g / 7.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.86 kg / 8.51 pounds 3860.0 g / 37.9 N

When hanging a holder on a vertical wall (e.g., a car body), it will only hold just about 20%-30% of its nominal power. Gravitational force and a weak degree of grip influence the fact that magnets move down faster than they detach. Planning a hanger? Consider that the shear force is much weaker than the maximum static pull force. On a slippery surface, the magnet will give way down under a noticeably lighter weight. Utilizing a rubberized pad can drastically increase the grip.

Table 4: Steel thickness (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 pounds 772.0 g / 7.6 N
1 mm	25%	1.93 kg / 4.25 pounds 1930.0 g / 18.9 N
2 mm	50%	3.86 kg / 8.51 pounds 3860.0 g / 37.9 N
3 mm	75%	5.79 kg / 12.76 pounds 5790.0 g / 56.8 N
5 mm	100%	7.72 kg / 17.02 pounds 7720.0 g / 75.7 N
10 mm	100%	7.72 kg / 17.02 pounds 7720.0 g / 75.7 N
11 mm	100%	7.72 kg / 17.02 pounds 7720.0 g / 75.7 N
12 mm	100%	7.72 kg / 17.02 pounds 7720.0 g / 75.7 N

A thin metal plate is not enough to conduct the full magnetic flux, which squanders power of the holder. If you install a neodymium to a weak sheet, the magnetism will pass right through and the attraction force will be weaker. To utilize the maximum of this magnet's potential, you need a suitably thick element of metal. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the holder holds weaker. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal stability (stability) - 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 pounds 7720.0 g / 75.7 N	OK
40 °C	-2.2%	7.55 kg / 16.65 pounds 7550.2 g / 74.1 N	OK
60 °C	-4.4%	7.38 kg / 16.27 pounds 7380.3 g / 72.4 N
80 °C	-6.6%	7.21 kg / 15.90 pounds 7210.5 g / 70.7 N
100 °C	-28.8%	5.50 kg / 12.12 pounds 5496.6 g / 53.9 N

Ordinary NdFeB products lose power past the thermal threshold. Protect against heat – heat can permanently damage this magnet. As the temperature rises, the magnet's force briefly drops. Refrain from using this product close to heaters higher than its working range. Ignoring the limit will lead to irreversible degradation of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, as well as the dimension ratios. Low-profile magnets (low Pc) risk losing magnetic properties at lower temperatures compared to rod magnets. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MPL 25x12.5x5 / N38

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

Two magnetic products interact from a wider radius than a magnet and steel combination. Such a system of magnet-to-magnet generates a stronger field and a further horizon of performance. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the collision energy is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*Flux density in repulsion mode drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Note: Figures demonstrate sliding force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (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
Timepiece	20 Gs (2.0 mT)	5.0 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Car key	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

A strong magnetic field poses a real danger to electronic devices and medical implants. These magnets produce a field that disrupts operation of sensitive medical devices. Remember: the unseen radiation penetrates the body and plastic. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - 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

Neodymium magnets are prone to chipping – a violent impact against metal causes immediate chipping. Watch the impact speed – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Corrosion resistance
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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
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 emitted by the pole surface. Essential parameter when building generators and motors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
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%

Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Note: On a vertical wall, the magnet holds merely approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

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

3. Heat tolerance

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

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

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

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 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 and environmental data

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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Component MPL 25x12.5x5 / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. 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 secures 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 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

They constitute a key element in the production of 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. 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. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to roughen and wash 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. In practice, this means that this magnet has the greatest attraction force on its main planes (25x12.5 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

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. It is a magnetic block with dimensions 25x12.5x5 mm and a self-weight of 11.72 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of neodymium magnets.

Pros

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:

They have unchanged lifting capacity, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
Neodymium magnets are extremely resistant to demagnetization caused by magnetic disturbances,
A magnet with a smooth gold surface has better aesthetics,
They show high magnetic induction at the operating surface, which affects their effectiveness,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of individual machining and modifying to defined conditions,
Key role in future technologies – they are used in computer drives, electromotive mechanisms, diagnostic systems, also modern systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power 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
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
Limited ability of producing threads in the magnet and complicated forms - preferred is casing - magnet mounting.
Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
Due to neodymium price, their price is higher than average,

Pull force analysis

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

Magnet power is the result of a measurement for ideal contact conditions, taking into account:

with the contact of a yoke made of low-carbon steel, guaranteeing maximum field concentration
whose thickness is min. 10 mm
characterized by smoothness
with direct contact (without paint)
during pulling in a direction vertical to the plane
at ambient temperature room level

Impact of factors on magnetic holding capacity in practice

It is worth knowing that the magnet holding will differ subject to elements below, in order of importance:

Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Plate material – mild steel attracts best. Alloy steels reduce magnetic properties and lifting capacity.
Surface quality – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Safe handling of NdFeB magnets

Thermal limits

Keep cool. Neodymium magnets are susceptible to heat. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).

Nickel allergy

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.

Medical implants

For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Mechanical processing

Dust generated during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Protect data

Do not bring magnets near a purse, computer, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Crushing risk

Big blocks can break fingers instantly. Under no circumstances put your hand between two strong magnets.

Danger to the youngest

Adult use only. Tiny parts pose a choking risk, causing serious injuries. Store away from children and animals.

Magnet fragility

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them cracking into shards.

Precision electronics

Remember: neodymium magnets produce a field that confuses sensitive sensors. Keep a safe distance from your phone, tablet, and GPS.

Powerful field

Be careful. Neodymium magnets act from a distance and snap with massive power, often quicker than you can move away.

Danger! Need more info? Read our article: Why are neodymium magnets dangerous?

MPL 25x12.5x5 / N38 - lamellar magnet

Technical - MPL 25x12.5x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the assembly - report

Table 1: Static pull force (pull vs distance) - power drop MPL 25x12.5x5 / N38

Table 2: Slippage load (vertical surface) MPL 25x12.5x5 / N38

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

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

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

Table 6: Two magnets (repulsion) - field range MPL 25x12.5x5 / N38

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

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

Table 9: Corrosion resistance MPL 25x12.5x5 / N38

Table 10: Construction data (Pc) MPL 25x12.5x5 / N38

Table 11: Physics of underwater searching MPL 25x12.5x5 / N38

1. Sliding resistance

2. Steel thickness impact

3. Heat tolerance

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

Chemical composition

Sustainability

Force (pull)

Magnetic Induction

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Strengths as well as weaknesses of neodymium magnets.

Pros

Disadvantages

Pull force analysis

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

Impact of factors on magnetic holding capacity in practice

Safe handling of NdFeB magnets

Thermal limits

Nickel allergy

Medical implants

Mechanical processing

Protect data

Crushing risk

Danger to the youngest

Magnet fragility

Precision electronics

Powerful field

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MPL 25x12.5x5 / N38

Table 2: Slippage load (vertical surface)
MPL 25x12.5x5 / N38

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

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

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

Table 6: Two magnets (repulsion) - field range
MPL 25x12.5x5 / N38

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

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

Table 9: Corrosion resistance
MPL 25x12.5x5 / N38

Table 10: Construction data (P_c)
MPL 25x12.5x5 / N38

Table 11: Physics of underwater searching
MPL 25x12.5x5 / N38