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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

see technical data »

4.92 ZŁ with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

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Physical properties - 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 assembly - data

Presented information represent the result of a physical calculation. Values rely on algorithms for the material Nd₂Fe₁₄B. Actual conditions may differ. Treat these data as a preliminary roadmap for designers.

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

Grip strength weakens sharply with every mm of gap. Note that even a very thin break (e.g., dirt, varnish, veneer) strongly reduces the pull force. Neodymiums operate most effectively during direct contact; gap nullifies the force. Analyze how quickly the parameters plummet, when the magnet does not touch directly to the metal substrate. When planning the assembly, discard unnecessary gaps.

Table 2: Shear force (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 following data indicates the approximate weight limit sufficient to initiate the downward movement of the magnet down on a vertical steel wall (assuming standard friction coefficient). This parameter is relative to the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
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 magnet on a upright wall (e.g., a car body), it will only hold only approx. 20%-30% of its nominal power. Gravitational force as well as a weak degree of grip cause that products move down easier than they detach. Planning a vertical fastening? Note that the shear force is noticeably lower than the maximum static pull force. On a slippery surface, the holder will give way down under a significantly smaller load. Using a rubber coating can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
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 too thin steel is unable to absorb the entire magnetic field, which weakens actual performance of the holder. If you mount a strong magnet to a thin surface, the field will pass right through and the attraction force will be weaker. To squeeze the maximum of this magnet's potential, you need a suitably thick backing of metal. The saturation phenomenon means that on sheet metal structures (e.g., appliance housings), the holder holds weaker. We advise picking the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - power drop
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

Classic neodymiums irreversibly lose power above the temperature limit. Avoid high temperatures – high temperature can permanently destroy this product. As the temperature rises, the neodymium's capacity briefly lowers. Avoid using this product close to ovens exceeding its working range. Ignoring the limit will cause permanent loss of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) may lose charge permanently sooner than long magnets. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MPL 25x12.5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 steel combination. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Want to build a solid fastener? Apply two magnets instead of one magnet and a striker plate. Remember that when attracting two neodymiums, the collision energy is huge. The levitation is marginally weaker than the connection force, but still impressive.
*Flux density between like poles drops to ~0 Gs at the midpoint of the gap (resulting from vector opposition).
* Figures show shear force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - 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
Phone / Smartphone	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

Extremely neodym field is a serious hazard to electronic devices and pacemakers. These neodymiums generate a flux that disrupts operation of sensitive medical devices. Remember: the unseen radiation penetrates the body and glass. Increased vigilance must be taken by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
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

NdFeB products are prone to chipping – a violent impact against metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or painful pinches to skin. Always hold the magnet during bringing near metal so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Use safety goggles 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. 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)

Flux value passing through the pole surface. Essential parameter in coil applications as well as sensors. The P_c coefficient determines 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%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Caution: On a vertical wall, the magnet retains merely a fraction of its max power.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) significantly reduces 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 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.

Engineering data and GPSR

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%

Ecology and recycling (GPSR)

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

Measurement Calculator

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Component MPL 25x12.5x5 / N38 features a low profile and industrial pulling force, making it an ideal solution for building separators and machines. As a block magnet with high power (approx. 7.72 kg), this product is available immediately from our warehouse in Poland. Furthermore, 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. 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. Thanks to the flat surface and high force (approx. 7.72 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

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. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. 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. 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.

The presented product is a neodymium magnet with precisely defined parameters: 25 mm (length), 12.5 mm (width), and 5 mm (thickness). 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 grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of rare earth magnets.

Advantages

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

Their strength is durable, and after approximately 10 years it drops only by ~1% (theoretically),
They do not lose their magnetic properties even under close interference source,
In other words, due to the smooth layer of silver, the element gains a professional look,
Magnets are characterized by exceptionally strong magnetic induction on the outer side,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Considering the ability of free shaping and customization to unique needs, magnetic components can be created in a broad palette of shapes and sizes, which increases their versatility,
Significant place in electronics industry – they are utilized in computer drives, drive modules, medical equipment, and technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in compact constructions

Cons

What to avoid - cons of neodymium magnets: tips and applications.

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures 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 immune to moisture, when using outdoors
We suggest casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated forms.
Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what it depends on?

Holding force of 7.72 kg is a measurement result performed under standard conditions:

with the contact of a sheet made of special test steel, ensuring full magnetic saturation
with a cross-section of at least 10 mm
characterized by even structure
under conditions of gap-free contact (surface-to-surface)
under vertical application of breakaway force (90-degree angle)
at conditions approx. 20°C

Practical aspects of lifting capacity – factors

During everyday use, the real power depends on a number of factors, ranked from crucial:

Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be lost to the other side.
Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Rough surfaces weaken the grip.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the lifting capacity.

Warnings

Immense force

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

Safe distance

Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

Shattering risk

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Physical harm

Large magnets can smash fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Keep away from children

Neodymium magnets are not toys. Eating a few magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates immediate surgery.

Avoid contact if allergic

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness appears, immediately stop handling magnets and use protective gear.

Machining danger

Powder produced during grinding of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Impact on smartphones

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Do not overheat magnets

Avoid heat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Warning for heart patients

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Safety First! Looking for details? Check our post: Why are neodymium magnets dangerous?

MPL 25x12.5x5 / N38 - lamellar magnet

Physical properties - 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 assembly - data

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

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

Table 3: Vertical assembly (sliding) - vertical pull MPL 25x12.5x5 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 25x12.5x5 / N38

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

Table 6: Two magnets (attraction) - forces in the system MPL 25x12.5x5 / N38

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

Table 8: Impact energy (cracking risk) - warning MPL 25x12.5x5 / N38

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

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

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

1. Vertical hold

2. Steel thickness impact

3. Thermal stability

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Field Strength

See also products

MW 4x5 / N38 - cylindrical magnet

MPL 3x3x2 / N38 - lamellar magnet

UMS 36x10.5x6.5x8 / N38 - conical magnetic holder

SM 18x225 [2xM5] / N42 - magnetic separator

Pros and cons of rare earth magnets.

Advantages

Cons

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what it depends on?

Practical aspects of lifting capacity – factors

Warnings

Immense force

Safe distance

Shattering risk

Physical harm

Keep away from children

Avoid contact if allergic

Machining danger

Impact on smartphones

Do not overheat magnets

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

Table 3: Vertical assembly (sliding) - vertical pull
MPL 25x12.5x5 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 25x12.5x5 / N38

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

Table 6: Two magnets (attraction) - forces in the system
MPL 25x12.5x5 / N38

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

Table 8: Impact energy (cracking risk) - warning
MPL 25x12.5x5 / N38

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

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

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