Product available Ships tomorrow

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 properties »

4.92 ZŁ with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

4.00 ZŁ

4.92 ZŁ

price from 150 pcs

3.76 ZŁ

4.62 ZŁ

price from 650 pcs

3.52 ZŁ

4.33 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Contact us by phone +48 888 99 98 98 alternatively drop us a message through form the contact section.
Parameters as well as shape of magnets can be calculated using our force calculator.

Orders submitted before 14:00 will be dispatched today!

Technical of the product - 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 simulation of the product - technical parameters

Presented data constitute the outcome of a mathematical simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Real-world parameters might slightly differ. Please consider these calculations as a supplementary guide when designing systems.

Table 1: Static 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 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	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

Pulling power decreases significantly with every subsequent millimeter of spacing. Keep in mind that even a microscopic distance (e.g., contamination, varnish, dust) noticeably reduces the pull force. Magnets operate optimally during direct contact; air break nullifies the power. Observe how rapidly the load capacity drop, when the product does not touch flatly to the metal substrate. When planning the mounting, discard unnecessary gaps.

Table 2: Vertical force (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 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 presents the estimated force sufficient to cause the slippage of the magnet vertically along a upright steel wall (considering typical friction coefficient). The holding force is relative to the air gap between the magnet and the metal.

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 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 placing a element on a upright surface (e.g., a fridge), it will maintain only about 20%-30% of nominal attraction strength. Gravity and a low friction coefficient cause that products move down faster than they pull off. Want to create a wall mount? Note that the shear force is noticeably lower than the maximum static pull force. On a smooth steel, the element will slip down under a much lighter cargo. Utilizing a rubberized layer can significantly improve the result.

Table 4: Material efficiency (substrate influence) - 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 thin metal plate is not enough to conduct the entire magnetic field, which weakens actual performance of the magnet. Should you mount a strong magnet to a weak sheet, the magnetism will penetrate right through and the holding will be smaller. To achieve the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation effect causes that on thin elements (e.g., appliance housings), the magnet shows lower pull force. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal stability (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 power after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently damage this magnet. With increasing heat, the magnet's power temporarily drops. Do not use this product near heat sources higher than its operating temperature limit. Too high temperature will result in irreversible degradation of magnetic properties.

*Engineering note: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) risk losing magnetic properties under lower heat stress than long magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
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 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 magnetic products attract each other from a wider radius than a magnet and sheet combination. The setup of magnet-to-magnet generates a stronger field and a larger range of action. Want to build a strong closure? Utilize two neodymiums instead of one magnet and a steel. Be careful that when bringing together two magnets, the pinch force is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density in repulsion mode drops to ~0 Gs at the geometric center of the gap (due to field cancellation).
Note: Results show sliding force of dual same magnets (friction coefficient ~0.15 for Ni-Ni layer).

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
Timepiece	20 Gs (2.0 mT)	5.0 cm
Mobile device	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

A strong magnetic field poses a real danger to IT equipment as well as pacemakers. These magnets generate a flux that destroys function of digital equipment. Remember: the unseen radiation penetrates the body and housings. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (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

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Control the attraction moment – a neodymium left loose turns into a projectile. Impact energy can cause material chips or dangerous crushing to skin. Be sure to control the product during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when handling 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)

The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction 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)

Flux value emitted by the magnet pole. Key data when building generators and motors. P_c value determines the magnet's operating point.

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

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds only approx. 20-30% of its perpendicular strength.

2. Efficiency vs thickness

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

3. Power loss vs temp

*For N38 grade, the safety 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

Measurement Calculator

Magnet pull force

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

Simply fill in any input, and the converter calculate the rest instantly.

Other products

Product available Ships tomorrow

MW 28.9x10 / N38 - cylindrical magnet

23.99 ZŁ brutto / pcs

Product available Ships tomorrow

UMT 20x25 white / N38 - board holder

3.49 ZŁ brutto / pcs

Product available Ships tomorrow

UI 40x12x7 [CA] - badge holder

0.984 ZŁ brutto / pcs

Product available Ships tomorrow

XT-5 magnetyzery do silników - DIESEL + olej - XT-5 magnetizer

98.99 ZŁ brutto / pcs

Component MPL 25x12.5x5 / N38 features a low profile and industrial pulling force, making it a perfect 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. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

The key to success is sliding the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 7.72 kg can pinch very hard and cause hematomas. 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 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, 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 25x12.5x5 / N38 model is magnetized axially (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. 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. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

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 holding force 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.

Pros and cons of rare earth magnets.

Pros

In addition to their long-term stability, neodymium magnets provide the following advantages:

They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
They have excellent resistance to magnetic field loss when exposed to external magnetic sources,
Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an visually attractive appearance,
Magnets possess maximum magnetic induction on the active area,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to modularity in constructing and the capacity to adapt to unusual requirements,
Huge importance in electronics industry – they are commonly used in mass storage devices, electric drive systems, medical devices, as well as industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
NdFeB magnets lose strength 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 very resistant to heat
They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited ability of creating threads in the magnet and complex shapes - recommended is a housing - magnet mounting.
Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Information about lifting capacity was determined for the most favorable conditions, taking into account:

using a plate made of low-carbon steel, functioning as a circuit closing element
with a thickness minimum 10 mm
with an polished contact surface
under conditions of ideal adhesion (metal-to-metal)
for force acting at a right angle (in the magnet axis)
at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Bear in mind that the application force may be lower depending on the following factors, in order of importance:

Air gap (between the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
Angle of force application – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
Steel thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted into the air.
Metal type – not every steel reacts the same. High carbon content weaken the attraction effect.
Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Thermal environment – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of neodymium magnets

Heat warning

Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. This process is irreversible.

Physical harm

Large magnets can break fingers instantly. Under no circumstances place your hand betwixt two attracting surfaces.

Phone sensors

Be aware: rare earth magnets generate a field that interferes with sensitive sensors. Maintain a separation from your mobile, device, and navigation systems.

Dust is flammable

Fire warning: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Nickel coating and allergies

Certain individuals experience a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Extended handling might lead to an allergic reaction. We strongly advise wear safety gloves.

Danger to the youngest

Product intended for adults. Tiny parts can be swallowed, causing intestinal necrosis. Store out of reach of children and animals.

Eye protection

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets leads to them shattering into small pieces.

ICD Warning

For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Data carriers

Data protection: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Safe operation

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

Safety First! Want to know more? Read our article: Why are neodymium magnets dangerous?

MPL 25x12.5x5 / N38 - lamellar magnet

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - technical parameters

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

Table 2: Vertical force (vertical surface) MPL 25x12.5x5 / N38

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

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

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

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

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

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

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

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

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

1. Wall mount (shear)

2. Efficiency vs thickness

3. Power loss vs temp

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

Chemical composition

Sustainability

Magnet pull force

Magnetic Induction

Other products

MW 28.9x10 / N38 - cylindrical magnet

UMT 20x25 white / N38 - board holder

UI 40x12x7 [CA] - badge holder

XT-5 magnetyzery do silników - DIESEL + olej - XT-5 magnetizer

Pros and cons of rare earth magnets.

Pros

Disadvantages

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Determinants of lifting force in real conditions

Safe handling of neodymium magnets

Heat warning

Physical harm

Phone sensors

Dust is flammable

Nickel coating and allergies

Danger to the youngest

Eye protection

ICD Warning

Data carriers

Safe operation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Vertical force (vertical surface)
MPL 25x12.5x5 / N38

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

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

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

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

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

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

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

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

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