MPL 12.5x12.5x5 / N38 - lamellar magnet - ujęcie 2

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MPL 12.5x12.5x5 / 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 020117

GTIN/EAN: 5906301811237

5.00

length

12.5 mm [±0,1 mm]

Width

12.5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

5.86 g

Magnetization Direction

↑ axial

Load capacity

4.84 kg / 47.51 N

Magnetic Induction

360.91 mT / 3609 Gs

Coating

[NiCuNi] Nickel

product parameters »

2.83 ZŁ with VAT / pcs + price for transport

2.30 ZŁ net + 23% VAT / pcs

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Physical properties - MPL 12.5x12.5x5 / N38 - lamellar magnet

Specification / characteristics - MPL 12.5x12.5x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020117
GTIN/EAN	5906301811237
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	12.5 mm [±0,1 mm]
Width	12.5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	5.86 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.84 kg / 47.51 N
Magnetic Induction ~ ?	360.91 mT / 3609 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 12.5x12.5x5 / 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 analysis of the magnet - technical parameters

The following data constitute the direct effect of a engineering calculation. Values are based on models for the material Nd₂Fe₁₄B. Operational parameters may differ from theoretical values. Please consider these calculations as a reference point during assembly planning.

Table 1: Static pull force (pull vs distance) - power drop
MPL 12.5x12.5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3608 Gs 360.8 mT	4.84 kg / 10.67 lbs 4840.0 g / 47.5 N	warning
1 mm	3156 Gs 315.6 mT	3.70 kg / 8.17 lbs 3704.2 g / 36.3 N	warning
2 mm	2671 Gs 267.1 mT	2.65 kg / 5.85 lbs 2653.8 g / 26.0 N	warning
3 mm	2211 Gs 221.1 mT	1.82 kg / 4.01 lbs 1817.7 g / 17.8 N	weak grip
5 mm	1464 Gs 146.4 mT	0.80 kg / 1.76 lbs 797.6 g / 7.8 N	weak grip
10 mm	538 Gs 53.8 mT	0.11 kg / 0.24 lbs 107.6 g / 1.1 N	weak grip
15 mm	234 Gs 23.4 mT	0.02 kg / 0.05 lbs 20.4 g / 0.2 N	weak grip
20 mm	119 Gs 11.9 mT	0.01 kg / 0.01 lbs 5.3 g / 0.1 N	weak grip
30 mm	42 Gs 4.2 mT	0.00 kg / 0.00 lbs 0.7 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	weak grip

Grip strength weakens sharply per each millimeter of spacing. Remember that even a very thin break (e.g., contamination, paint, rust) significantly reduces the pull force. Magnets work strongest at the point of direct contact; air break drastically cuts the force. See how rapidly the pull force plummet, when the magnet does not touch flatly to the steel surface. When designing the mounting, discard unnecessary gaps.

Table 2: Slippage force (wall)
MPL 12.5x12.5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.97 kg / 2.13 lbs 968.0 g / 9.5 N
1 mm	Stal (~0.2)	0.74 kg / 1.63 lbs 740.0 g / 7.3 N
2 mm	Stal (~0.2)	0.53 kg / 1.17 lbs 530.0 g / 5.2 N
3 mm	Stal (~0.2)	0.36 kg / 0.80 lbs 364.0 g / 3.6 N
5 mm	Stal (~0.2)	0.16 kg / 0.35 lbs 160.0 g / 1.6 N
10 mm	Stal (~0.2)	0.02 kg / 0.05 lbs 22.0 g / 0.2 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 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 theoretical holding capacity necessary to initiate the sliding of the magnet downwards along a upright steel plate (assuming typical friction coefficient). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 12.5x12.5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.45 kg / 3.20 lbs 1452.0 g / 14.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.97 kg / 2.13 lbs 968.0 g / 9.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.48 kg / 1.07 lbs 484.0 g / 4.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.42 kg / 5.34 lbs 2420.0 g / 23.7 N

When placing a holder on a vertical surface (e.g., a fridge), it you can count on just approx. 1/5 of its maximum pull force. Gravity and a low friction coefficient cause that magnets slide down faster than they detach. Want to create a hanger? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the holder will slide down under a noticeably lighter cargo. Utilizing a rubberized pad can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MPL 12.5x12.5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.48 kg / 1.07 lbs 484.0 g / 4.7 N
1 mm	25%	1.21 kg / 2.67 lbs 1210.0 g / 11.9 N
2 mm	50%	2.42 kg / 5.34 lbs 2420.0 g / 23.7 N
3 mm	75%	3.63 kg / 8.00 lbs 3630.0 g / 35.6 N
5 mm	100%	4.84 kg / 10.67 lbs 4840.0 g / 47.5 N
10 mm	100%	4.84 kg / 10.67 lbs 4840.0 g / 47.5 N
11 mm	100%	4.84 kg / 10.67 lbs 4840.0 g / 47.5 N
12 mm	100%	4.84 kg / 10.67 lbs 4840.0 g / 47.5 N

A thin metal plate is incapable of take in the full magnetic flux, which weakens actual performance of the holder. If you mount a strong magnet to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To squeeze the maximum of this magnet's power, you need a suitably thick backing of metal. The saturation effect means that on thin elements (e.g., appliance housings), the magnet works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MPL 12.5x12.5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.84 kg / 10.67 lbs 4840.0 g / 47.5 N	OK
40 °C	-2.2%	4.73 kg / 10.44 lbs 4733.5 g / 46.4 N	OK
60 °C	-4.4%	4.63 kg / 10.20 lbs 4627.0 g / 45.4 N
80 °C	-6.6%	4.52 kg / 9.97 lbs 4520.6 g / 44.3 N
100 °C	-28.8%	3.45 kg / 7.60 lbs 3446.1 g / 33.8 N

Standard neodymium magnets change their properties strength above the temperature limit. Avoid high temperatures – heat can irreversibly destroy this magnet. As the temperature rises, the neodymium's capacity briefly decreases. Refrain from using this product near heat sources higher than its safe range. Ignoring the limit will lead to irreversible degradation of magnetic properties.

*Engineering note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures compared to rod magnets. The danger warning in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MPL 12.5x12.5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	12.54 kg / 27.64 lbs 5 069 Gs	1.88 kg / 4.15 lbs 1880 g / 18.4 N	N/A
1 mm	11.08 kg / 24.43 lbs 6 783 Gs	1.66 kg / 3.66 lbs 1662 g / 16.3 N	9.97 kg / 21.98 lbs ~0 Gs
2 mm	9.59 kg / 21.15 lbs 6 312 Gs	1.44 kg / 3.17 lbs 1439 g / 14.1 N	8.63 kg / 19.04 lbs ~0 Gs
3 mm	8.18 kg / 18.03 lbs 5 827 Gs	1.23 kg / 2.70 lbs 1226 g / 12.0 N	7.36 kg / 16.22 lbs ~0 Gs
5 mm	5.71 kg / 12.60 lbs 4 871 Gs	0.86 kg / 1.89 lbs 857 g / 8.4 N	5.14 kg / 11.34 lbs ~0 Gs
10 mm	2.07 kg / 4.55 lbs 2 929 Gs	0.31 kg / 0.68 lbs 310 g / 3.0 N	1.86 kg / 4.10 lbs ~0 Gs
20 mm	0.28 kg / 0.61 lbs 1 076 Gs	0.04 kg / 0.09 lbs 42 g / 0.4 N	0.25 kg / 0.55 lbs ~0 Gs
50 mm	0.00 kg / 0.01 lbs 136 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 84 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.00 lbs 56 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.00 lbs 39 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 28 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 21 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets attract each other from a much further distance than a magnet and sheet combination. The setup of magnet-to-magnet produces a massive flux and a further horizon of operation. Want to build a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the impact force is huge. The repulsion force is a bit weaker than the attraction, but still large.
*The magnetic induction in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Figures demonstrate friction force of dual identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 12.5x12.5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.5 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.5 cm
Remote	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a serious hazard to electronics as well as medical implants. These magnets generate a field that disrupts operation of digital equipment. Be aware: the invisible magnetic field penetrates the body and housings. Increased vigilance must be exercised by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MPL 12.5x12.5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	29.38 km/h (8.16 m/s)	0.20 J
30 mm	50.21 km/h (13.95 m/s)	0.57 J
50 mm	64.81 km/h (18.00 m/s)	0.95 J
100 mm	91.65 km/h (25.46 m/s)	1.90 J

Magnetic elements are prone to chipping – a collision with steel causes immediate chipping. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Kinetic force can cause material chips or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Surface protection spec
MPL 12.5x12.5x5 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MPL 12.5x12.5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 874 Mx	58.7 µWb
P_c Coefficient	0.46	Low (Flat)

Total magnetic flux emitted by the magnet pole. Essential parameter in coil applications as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Submerged application
MPL 12.5x12.5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	4.84 kg	Standard
Water (riverbed)	5.54 kg (+0.70 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. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds merely approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

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

3. Thermal stability

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.46

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 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%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020117-2026

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Component MPL 12.5x12.5x5 / N38 features a flat shape and professional pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 47.51 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.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 12.5x12.5x5 / 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.

Plate magnets MPL 12.5x12.5x5 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as fasteners under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 12.5x12.5x5 / N38, we recommend utilizing 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 12.5x12.5x5 / N38 model is magnetized through the thickness (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. 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: 12.5 mm (length), 12.5 mm (width), and 5 mm (thickness). The key parameter here is the holding force amounting to approximately 4.84 kg (force ~47.51 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of neodymium magnets.

Advantages

Besides their exceptional strength, neodymium magnets offer the following advantages:

They do not lose strength, even over nearly 10 years – the reduction in power is only ~1% (based on measurements),
Neodymium magnets prove to be extremely resistant to demagnetization caused by external interference,
A magnet with a metallic gold surface is more attractive,
Magnetic induction on the working part of the magnet is maximum,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Considering the ability of accurate shaping and customization to individualized needs, neodymium magnets can be modeled in a wide range of shapes and sizes, which expands the range of possible applications,
Wide application in modern technologies – they are commonly used in computer drives, electric motors, medical devices, also technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of neodymium magnets:

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in power. 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
They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited possibility of producing threads in the magnet and complex shapes - recommended is casing - magnet mounting.
Health risk resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, small elements of these products can complicate diagnosis 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

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

The declared magnet strength represents the maximum value, measured under ideal test conditions, meaning:

on a block made of structural steel, effectively closing the magnetic flux
possessing a thickness of minimum 10 mm to avoid saturation
characterized by lack of roughness
with zero gap (no paint)
under perpendicular force vector (90-degree angle)
at conditions approx. 20°C

Practical aspects of lifting capacity – factors

Please note that the application force will differ depending on the following factors, in order of importance:

Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content reduce magnetic permeability and holding force.
Surface structure – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Impact on smartphones

A strong magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Keep magnets close to a smartphone to avoid damaging the sensors.

Health Danger

Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Cards and drives

Do not bring magnets close to a purse, laptop, or screen. The magnetic field can destroy these devices and erase data from cards.

Do not underestimate power

Exercise caution. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can move away.

Power loss in heat

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, immediately stop working with magnets and use protective gear.

Adults only

These products are not intended for children. Accidental ingestion of several magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Fragile material

Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Dust is flammable

Machining of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Finger safety

Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand between two attracting surfaces.

Safety First! Need more info? Check our post: Why are neodymium magnets dangerous?

MPL 12.5x12.5x5 / N38 - lamellar magnet

Physical properties - MPL 12.5x12.5x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - technical parameters

Table 1: Static pull force (pull vs distance) - power drop MPL 12.5x12.5x5 / N38

Table 2: Slippage force (wall) MPL 12.5x12.5x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 12.5x12.5x5 / N38

Table 4: Steel thickness (substrate influence) - power losses MPL 12.5x12.5x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MPL 12.5x12.5x5 / N38

Table 6: Two magnets (attraction) - forces in the system MPL 12.5x12.5x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MPL 12.5x12.5x5 / N38

Table 8: Collisions (kinetic energy) - collision effects MPL 12.5x12.5x5 / N38

Table 9: Surface protection spec MPL 12.5x12.5x5 / N38

Table 10: Electrical data (Flux) MPL 12.5x12.5x5 / N38

Table 11: Submerged application MPL 12.5x12.5x5 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Thermal stability

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

Chemical composition

Environmental data

Force (pull)

Magnetic Field

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Pros as well as cons of neodymium magnets.

Advantages

Disadvantages

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

Practical aspects of lifting capacity – factors

Precautions when working with neodymium magnets

Impact on smartphones

Health Danger

Cards and drives

Do not underestimate power

Power loss in heat

Warning for allergy sufferers

Adults only

Fragile material

Dust is flammable

Finger safety

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MPL 12.5x12.5x5 / N38

Table 2: Slippage force (wall)
MPL 12.5x12.5x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 12.5x12.5x5 / N38

Table 4: Steel thickness (substrate influence) - power losses
MPL 12.5x12.5x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MPL 12.5x12.5x5 / N38

Table 6: Two magnets (attraction) - forces in the system
MPL 12.5x12.5x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 12.5x12.5x5 / N38

Table 8: Collisions (kinetic energy) - collision effects
MPL 12.5x12.5x5 / N38

Table 9: Surface protection spec
MPL 12.5x12.5x5 / N38

Table 10: Electrical data (Flux)
MPL 12.5x12.5x5 / N38

Table 11: Submerged application
MPL 12.5x12.5x5 / N38