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MPL 40x10x5x2[7/3.5] / 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 020397

GTIN/EAN: 5906301811909

5.00

length

40 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

15 g

Magnetization Direction

↑ axial

Load capacity

11.85 kg / 116.27 N

Magnetic Induction

321.37 mT / 3214 Gs

Coating

[NiCuNi] Nickel

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Technical data of the product - MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

properties

properties	values
Cat. no.	020397
GTIN/EAN	5906301811909
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	40 mm [±0,1 mm]
Width	10 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	15 g
Magnetization Direction	↑ axial
Load capacity ~ ?	11.85 kg / 116.27 N
Magnetic Induction ~ ?	321.37 mT / 3214 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x10x5x2[7/3.5] / 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 analysis of the product - report

The following data are the result of a engineering analysis. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual parameters might slightly deviate from the simulation results. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs gap) - characteristics
MPL 40x10x5x2[7/3.5] / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3212 Gs 321.2 mT	11.85 kg / 26.12 LBS 11850.0 g / 116.2 N	dangerous!
1 mm	2791 Gs 279.1 mT	8.95 kg / 19.73 LBS 8947.7 g / 87.8 N	warning
2 mm	2358 Gs 235.8 mT	6.38 kg / 14.08 LBS 6384.9 g / 62.6 N	warning
3 mm	1965 Gs 196.5 mT	4.43 kg / 9.77 LBS 4432.4 g / 43.5 N	warning
5 mm	1360 Gs 136.0 mT	2.12 kg / 4.68 LBS 2122.9 g / 20.8 N	warning
10 mm	615 Gs 61.5 mT	0.43 kg / 0.96 LBS 434.1 g / 4.3 N	safe
15 mm	329 Gs 32.9 mT	0.12 kg / 0.27 LBS 124.5 g / 1.2 N	safe
20 mm	195 Gs 19.5 mT	0.04 kg / 0.10 LBS 43.9 g / 0.4 N	safe
30 mm	83 Gs 8.3 mT	0.01 kg / 0.02 LBS 8.0 g / 0.1 N	safe
50 mm	24 Gs 2.4 mT	0.00 kg / 0.00 LBS 0.6 g / 0.0 N	safe

Pulling power drops drastically per each millimeter of spacing. Keep in mind that even the smallest gap (e.g., contamination, paint, veneer) strongly weakens the grip. Magnetic products operate strongest in perfect adhesion; distance drastically cuts the power. Notice how flashily the load capacity plummet, when the product does not touch tightly to the metal substrate. When designing the mounting, eliminate additional spacers.

Table 2: Slippage capacity (wall)
MPL 40x10x5x2[7/3.5] / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.37 kg / 5.22 LBS 2370.0 g / 23.2 N
1 mm	Stal (~0.2)	1.79 kg / 3.95 LBS 1790.0 g / 17.6 N
2 mm	Stal (~0.2)	1.28 kg / 2.81 LBS 1276.0 g / 12.5 N
3 mm	Stal (~0.2)	0.89 kg / 1.95 LBS 886.0 g / 8.7 N
5 mm	Stal (~0.2)	0.42 kg / 0.93 LBS 424.0 g / 4.2 N
10 mm	Stal (~0.2)	0.09 kg / 0.19 LBS 86.0 g / 0.8 N
15 mm	Stal (~0.2)	0.02 kg / 0.05 LBS 24.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 8.0 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 theoretical shear load sufficient to cause the slippage of the magnet vertically along a vertical steel wall (assuming standard friction coefficient). This parameter varies with the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x10x5x2[7/3.5] / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.55 kg / 7.84 LBS 3555.0 g / 34.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.37 kg / 5.22 LBS 2370.0 g / 23.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.19 kg / 2.61 LBS 1185.0 g / 11.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.93 kg / 13.06 LBS 5925.0 g / 58.1 N

When mounting a holder on a upright wall (e.g., a board), it will only hold just about 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient cause that products slip faster than they pop off the substrate. Planning a wall mount? Remember that the shear force is much weaker than the perpendicular breakaway force. On a slippery surface, the element will slide down under a noticeably lighter load. Application of an anti-slip pad can effectively improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x10x5x2[7/3.5] / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.59 kg / 1.31 LBS 592.5 g / 5.8 N
1 mm	13%	1.48 kg / 3.27 LBS 1481.3 g / 14.5 N
2 mm	25%	2.96 kg / 6.53 LBS 2962.5 g / 29.1 N
3 mm	38%	4.44 kg / 9.80 LBS 4443.8 g / 43.6 N
5 mm	63%	7.41 kg / 16.33 LBS 7406.3 g / 72.7 N
10 mm	100%	11.85 kg / 26.12 LBS 11850.0 g / 116.2 N
11 mm	100%	11.85 kg / 26.12 LBS 11850.0 g / 116.2 N
12 mm	100%	11.85 kg / 26.12 LBS 11850.0 g / 116.2 N

A thin sheet is unable to take in the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this magnet's power, you need a suitably thick element of metal. The saturation effect causes that on sheet metal structures (e.g., appliance housings), the product works worse. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 40x10x5x2[7/3.5] / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	11.85 kg / 26.12 LBS 11850.0 g / 116.2 N	OK
40 °C	-2.2%	11.59 kg / 25.55 LBS 11589.3 g / 113.7 N	OK
60 °C	-4.4%	11.33 kg / 24.98 LBS 11328.6 g / 111.1 N
80 °C	-6.6%	11.07 kg / 24.40 LBS 11067.9 g / 108.6 N
100 °C	-28.8%	8.44 kg / 18.60 LBS 8437.2 g / 82.8 N

Classic neodymiums change their properties parameters after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently damage this magnet. With every degree above norm, the magnet's capacity temporarily drops. Avoid using this magnet in hot environments higher than its safe range. Exceeding the critical threshold will lead to destruction of magnetism.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low Pc) are more susceptible to demagnetization under lower heat stress compared to rod magnets. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 40x10x5x2[7/3.5] / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	25.44 kg / 56.10 LBS 4 569 Gs	3.82 kg / 8.41 LBS 3817 g / 37.4 N	N/A
1 mm	22.33 kg / 49.22 LBS 6 018 Gs	3.35 kg / 7.38 LBS 3349 g / 32.9 N	20.09 kg / 44.30 LBS ~0 Gs
2 mm	19.21 kg / 42.36 LBS 5 582 Gs	2.88 kg / 6.35 LBS 2882 g / 28.3 N	17.29 kg / 38.12 LBS ~0 Gs
3 mm	16.31 kg / 35.96 LBS 5 144 Gs	2.45 kg / 5.39 LBS 2447 g / 24.0 N	14.68 kg / 32.36 LBS ~0 Gs
5 mm	11.45 kg / 25.23 LBS 4 309 Gs	1.72 kg / 3.78 LBS 1717 g / 16.8 N	10.30 kg / 22.71 LBS ~0 Gs
10 mm	4.56 kg / 10.05 LBS 2 719 Gs	0.68 kg / 1.51 LBS 684 g / 6.7 N	4.10 kg / 9.04 LBS ~0 Gs
20 mm	0.93 kg / 2.05 LBS 1 230 Gs	0.14 kg / 0.31 LBS 140 g / 1.4 N	0.84 kg / 1.85 LBS ~0 Gs
50 mm	0.04 kg / 0.08 LBS 249 Gs	0.01 kg / 0.01 LBS 6 g / 0.1 N	0.03 kg / 0.08 LBS ~0 Gs
60 mm	0.02 kg / 0.04 LBS 167 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.03 LBS ~0 Gs
70 mm	0.01 kg / 0.02 LBS 116 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 84 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.01 LBS 62 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 48 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and steel combination. Such a system of two magnets produces a massive flux and a further horizon of operation. Designing a strong closure? Use a pair of magnets instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the collision energy is huge. The levitation is a bit weaker than the connection force, but still large.
*Field value between like poles is approximately ~0 Gs at the midpoint of the gap (due to field cancellation).
* Results demonstrate sliding force of dual same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MPL 40x10x5x2[7/3.5] / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	9.0 cm
Hearing aid	10 Gs (1.0 mT)	7.0 cm
Mechanical watch	20 Gs (2.0 mT)	5.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	4.5 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 is a large risk to electronic devices and pacemakers. These magnets produce a field that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and glass. Special caution must be exercised by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MPL 40x10x5x2[7/3.5] / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.99 km/h (8.05 m/s)	0.49 J
30 mm	49.12 km/h (13.64 m/s)	1.40 J
50 mm	63.39 km/h (17.61 m/s)	2.33 J
100 mm	89.64 km/h (24.90 m/s)	4.65 J

Neodymium magnets are very brittle – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely becomes dangerous. Striking energy can cause material chips or dangerous crushing to skin. Hold the magnet firmly during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear eye protection when handling with large magnets.

Table 9: Anti-corrosion coating durability
MPL 40x10x5x2[7/3.5] / 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: Electrical data (P_c)
MPL 40x10x5x2[7/3.5] / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	11 419 Mx	114.2 µWb
P_c Coefficient	0.31	Low (Flat)

Total magnetic flux emitted by the pole surface. Essential parameter for generator designers and motors. P_c value defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MPL 40x10x5x2[7/3.5] / N38

Environment	Effective steel pull	Effect
Air (land)	11.85 kg	Standard
Water (riverbed)	13.57 kg (+1.72 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.

Water displaces steel, making heavy objects slightly lighter. 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 max power.

2. Efficiency vs thickness

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

3. Power loss vs temp

*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) = 0.31

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

Elemental analysis

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: 020397-2026

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This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x10x5 mm and a weight of 15 g, guarantees the highest quality connection. This rectangular block with a force of 116.27 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 strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 40x10x5x2[7/3.5] / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, 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 40x10x5x2[7/3.5] / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 11.85 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.

For mounting flat magnets MPL 40x10x5x2[7/3.5] / 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. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 40x10x5x2[7/3.5] / N38 model is magnetized axially (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.

This model is characterized by dimensions 40x10x5 mm, which, at a weight of 15 g, makes it an element with high energy density. It is a magnetic block with dimensions 40x10x5 mm and a self-weight of 15 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 rare earth magnets.

Benefits

Apart from their strong magnetic energy, neodymium magnets have these key benefits:

They have stable power, and over more than ten years their performance decreases symbolically – ~1% (according to theory),
Neodymium magnets are distinguished by extremely resistant to loss of magnetic properties caused by external interference,
Thanks to the glossy finish, the plating of nickel, gold, or silver-plated gives an visually attractive appearance,
Magnets have exceptionally strong magnetic induction on the outer layer,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to the possibility of free shaping and customization to custom requirements, magnetic components can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
Significant place in innovative solutions – they serve a role in data components, electric drive systems, medical equipment, and industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Weaknesses

Cons of neodymium magnets: weaknesses and usage proposals

Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in realizing threads and complex shapes in magnets, we propose using a housing - magnetic mechanism.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
With budget limitations the cost of neodymium magnets is a challenge,

Holding force characteristics

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

The specified lifting capacity concerns the maximum value, recorded under laboratory conditions, meaning:

on a base made of mild steel, effectively closing the magnetic flux
whose transverse dimension reaches at least 10 mm
with a plane perfectly flat
without the slightest insulating layer between the magnet and steel
under vertical force vector (90-degree angle)
at ambient temperature room level

Determinants of practical lifting force of a magnet

In practice, the actual holding force results from many variables, ranked from most significant:

Distance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Direction of force – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – too thin plate does not close the flux, causing part of the flux to be lost to the other side.
Material composition – not every steel attracts identically. Alloy additives worsen the attraction effect.
Surface quality – the more even the plate, the better the adhesion and stronger the hold. Roughness creates an air distance.
Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with neodymium magnets

Electronic devices

Avoid bringing magnets close to a purse, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.

Sensitization to coating

Medical facts indicate that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and choose encased magnets.

Heat warning

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Keep away from electronics

A powerful magnetic field disrupts the operation of compasses in phones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Respect the power

Handle with care. Rare earth magnets act from a distance and connect with massive power, often faster than you can move away.

Risk of cracking

NdFeB magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets will cause them cracking into shards.

Fire warning

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

Implant safety

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Bone fractures

Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

This is not a toy

NdFeB magnets are not suitable for play. Eating a few magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and necessitates urgent medical intervention.

Important! Details about hazards in the article: Magnet Safety Guide.

MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

Technical data of the product - MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - report

Table 1: Static pull force (pull vs gap) - characteristics MPL 40x10x5x2[7/3.5] / N38

Table 2: Slippage capacity (wall) MPL 40x10x5x2[7/3.5] / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 40x10x5x2[7/3.5] / N38

Table 4: Steel thickness (substrate influence) - power losses MPL 40x10x5x2[7/3.5] / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MPL 40x10x5x2[7/3.5] / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MPL 40x10x5x2[7/3.5] / N38

Table 7: Protective zones (implants) - precautionary measures MPL 40x10x5x2[7/3.5] / N38

Table 8: Dynamics (kinetic energy) - collision effects MPL 40x10x5x2[7/3.5] / N38

Table 9: Anti-corrosion coating durability MPL 40x10x5x2[7/3.5] / N38

Table 10: Electrical data (Pc) MPL 40x10x5x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing) MPL 40x10x5x2[7/3.5] / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Power loss vs temp

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

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Magnetic Induction

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Strengths as well as weaknesses of rare earth magnets.

Benefits

Weaknesses

Holding force characteristics

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

Determinants of practical lifting force of a magnet

Safety rules for work with neodymium magnets

Electronic devices

Sensitization to coating

Heat warning

Keep away from electronics

Respect the power

Risk of cracking

Fire warning

Implant safety

Bone fractures

This is not a toy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MPL 40x10x5x2[7/3.5] / N38

Table 2: Slippage capacity (wall)
MPL 40x10x5x2[7/3.5] / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x10x5x2[7/3.5] / N38

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x10x5x2[7/3.5] / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 40x10x5x2[7/3.5] / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 40x10x5x2[7/3.5] / N38

Table 7: Protective zones (implants) - precautionary measures
MPL 40x10x5x2[7/3.5] / N38

Table 8: Dynamics (kinetic energy) - collision effects
MPL 40x10x5x2[7/3.5] / N38

Table 9: Anti-corrosion coating durability
MPL 40x10x5x2[7/3.5] / N38

Table 10: Electrical data (P_c)
MPL 40x10x5x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing)
MPL 40x10x5x2[7/3.5] / N38