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MPL 40x20x10 / 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 020158

GTIN/EAN: 5906301811640

length

40 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

60 g

Magnetization Direction

↑ axial

Load capacity

24.62 kg / 241.53 N

Magnetic Induction

349.60 mT / 3496 Gs

Coating

[NiCuNi] Nickel

technical parameters »

31.00 ZŁ with VAT / pcs + price for transport

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Technical specification - MPL 40x20x10 / N38 - lamellar magnet

Specification / characteristics - MPL 40x20x10 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020158
GTIN/EAN	5906301811640
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	20 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	60 g
Magnetization Direction	↑ axial
Load capacity ~ ?	24.62 kg / 241.53 N
Magnetic Induction ~ ?	349.60 mT / 3496 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x20x10 / 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

Engineering modeling of the magnet - data

Presented data are the result of a physical calculation. Results rely on models for the material Nd₂Fe₁₄B. Operational conditions may differ. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - characteristics
MPL 40x20x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3495 Gs 349.5 mT	24.62 kg / 54.28 LBS 24620.0 g / 241.5 N	dangerous!
1 mm	3272 Gs 327.2 mT	21.58 kg / 47.57 LBS 21578.0 g / 211.7 N	dangerous!
2 mm	3035 Gs 303.5 mT	18.56 kg / 40.92 LBS 18559.3 g / 182.1 N	dangerous!
3 mm	2794 Gs 279.4 mT	15.73 kg / 34.69 LBS 15733.0 g / 154.3 N	dangerous!
5 mm	2332 Gs 233.2 mT	10.96 kg / 24.16 LBS 10959.2 g / 107.5 N	dangerous!
10 mm	1433 Gs 143.3 mT	4.14 kg / 9.12 LBS 4136.4 g / 40.6 N	strong
15 mm	891 Gs 89.1 mT	1.60 kg / 3.52 LBS 1598.7 g / 15.7 N	weak grip
20 mm	574 Gs 57.4 mT	0.66 kg / 1.46 LBS 664.0 g / 6.5 N	weak grip
30 mm	267 Gs 26.7 mT	0.14 kg / 0.32 LBS 143.7 g / 1.4 N	weak grip
50 mm	82 Gs 8.2 mT	0.01 kg / 0.03 LBS 13.7 g / 0.1 N	weak grip

Pulling power decreases sharply with every mm of distance. Note that even a microscopic distance (e.g., dirt, varnish, rust) noticeably weakens the grip. Magnets work optimally in perfect adhesion; air break drastically cuts the power. See how flashily the pull force fall, when the magnet does not touch directly to the steel surface. When planning the assembly, eliminate additional spacers.

Table 2: Vertical force (wall)
MPL 40x20x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.92 kg / 10.86 LBS 4924.0 g / 48.3 N
1 mm	Stal (~0.2)	4.32 kg / 9.52 LBS 4316.0 g / 42.3 N
2 mm	Stal (~0.2)	3.71 kg / 8.18 LBS 3712.0 g / 36.4 N
3 mm	Stal (~0.2)	3.15 kg / 6.94 LBS 3146.0 g / 30.9 N
5 mm	Stal (~0.2)	2.19 kg / 4.83 LBS 2192.0 g / 21.5 N
10 mm	Stal (~0.2)	0.83 kg / 1.83 LBS 828.0 g / 8.1 N
15 mm	Stal (~0.2)	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
20 mm	Stal (~0.2)	0.13 kg / 0.29 LBS 132.0 g / 1.3 N
30 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 g / 0.3 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The table below presents the approximate holding capacity sufficient to cause the downward movement of the magnet vertically on a upright steel plate (assuming typical friction coefficient). This parameter depends on the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	7.39 kg / 16.28 LBS 7386.0 g / 72.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.92 kg / 10.86 LBS 4924.0 g / 48.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.46 kg / 5.43 LBS 2462.0 g / 24.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	12.31 kg / 27.14 LBS 12310.0 g / 120.8 N

When hanging a holder on a vertical plane (e.g., a car body), it will only hold just approx. 1/5 of nominal attraction strength. Gravity and a low friction coefficient influence the fact that magnets move down easier than they detach. Want to create a wall mount? Note that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the magnet will slide down under a significantly smaller load. Using a rubber layer can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x20x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.23 kg / 2.71 LBS 1231.0 g / 12.1 N
1 mm	13%	3.08 kg / 6.78 LBS 3077.5 g / 30.2 N
2 mm	25%	6.16 kg / 13.57 LBS 6155.0 g / 60.4 N
3 mm	38%	9.23 kg / 20.35 LBS 9232.5 g / 90.6 N
5 mm	63%	15.39 kg / 33.92 LBS 15387.5 g / 151.0 N
10 mm	100%	24.62 kg / 54.28 LBS 24620.0 g / 241.5 N
11 mm	100%	24.62 kg / 54.28 LBS 24620.0 g / 241.5 N
12 mm	100%	24.62 kg / 54.28 LBS 24620.0 g / 241.5 N

A thin metal plate is not enough to focus the full magnetic flux, which squanders power of the holder. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the pull force will drop sharply. To utilize the maximum of this neodymium's power, you require a sufficiently solid piece of steel. The material oversaturation causes that on delicate walls (e.g., thin profiles), the magnet holds weaker. We recommend selecting the steel thickness from these parameters.

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x20x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	24.62 kg / 54.28 LBS 24620.0 g / 241.5 N	OK
40 °C	-2.2%	24.08 kg / 53.08 LBS 24078.4 g / 236.2 N	OK
60 °C	-4.4%	23.54 kg / 51.89 LBS 23536.7 g / 230.9 N
80 °C	-6.6%	23.00 kg / 50.70 LBS 22995.1 g / 225.6 N
100 °C	-28.8%	17.53 kg / 38.65 LBS 17529.4 g / 172.0 N

Ordinary NdFeB products change their properties strength after exceeding the maximum temperature. Avoid high temperatures – heat can permanently demagnetize this magnet. As the temperature rises, the magnet's capacity temporarily decreases. Refrain from using this magnet close to ovens higher than its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetism.

*Engineering note: Heat tolerance is determined by both grade, but also on the magnet's shape. Low-profile magnets (low Pc) are more susceptible to demagnetization under lower heat stress than long magnets. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MPL 40x20x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	60.25 kg / 132.83 LBS 4 926 Gs	9.04 kg / 19.93 LBS 9038 g / 88.7 N	N/A
1 mm	56.58 kg / 124.73 LBS 6 774 Gs	8.49 kg / 18.71 LBS 8487 g / 83.3 N	50.92 kg / 112.26 LBS ~0 Gs
2 mm	52.81 kg / 116.42 LBS 6 544 Gs	7.92 kg / 17.46 LBS 7921 g / 77.7 N	47.53 kg / 104.78 LBS ~0 Gs
3 mm	49.07 kg / 108.19 LBS 6 309 Gs	7.36 kg / 16.23 LBS 7361 g / 72.2 N	44.17 kg / 97.37 LBS ~0 Gs
5 mm	41.89 kg / 92.34 LBS 5 828 Gs	6.28 kg / 13.85 LBS 6283 g / 61.6 N	37.70 kg / 83.11 LBS ~0 Gs
10 mm	26.82 kg / 59.13 LBS 4 664 Gs	4.02 kg / 8.87 LBS 4023 g / 39.5 N	24.14 kg / 53.22 LBS ~0 Gs
20 mm	10.12 kg / 22.32 LBS 2 865 Gs	1.52 kg / 3.35 LBS 1518 g / 14.9 N	9.11 kg / 20.09 LBS ~0 Gs
50 mm	0.73 kg / 1.61 LBS 769 Gs	0.11 kg / 0.24 LBS 109 g / 1.1 N	0.66 kg / 1.45 LBS ~0 Gs
60 mm	0.35 kg / 0.78 LBS 534 Gs	0.05 kg / 0.12 LBS 53 g / 0.5 N	0.32 kg / 0.70 LBS ~0 Gs
70 mm	0.18 kg / 0.40 LBS 383 Gs	0.03 kg / 0.06 LBS 27 g / 0.3 N	0.16 kg / 0.36 LBS ~0 Gs
80 mm	0.10 kg / 0.22 LBS 282 Gs	0.01 kg / 0.03 LBS 15 g / 0.1 N	0.09 kg / 0.20 LBS ~0 Gs
90 mm	0.06 kg / 0.12 LBS 214 Gs	0.01 kg / 0.02 LBS 8 g / 0.1 N	0.05 kg / 0.11 LBS ~0 Gs
100 mm	0.03 kg / 0.07 LBS 165 Gs	0.01 kg / 0.01 LBS 5 g / 0.0 N	0.03 kg / 0.07 LBS ~0 Gs

Two magnets attract each other from a much further distance than a magnet and sheet setup. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Want to build a solid fastener? Apply two magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the collision energy is massive. The levitation is a bit weaker than the attraction, but still large.
*Field value in repulsion mode drops to ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Estimates show shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - precautionary measures
MPL 40x20x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	14.5 cm
Hearing aid	10 Gs (1.0 mT)	11.5 cm
Mechanical watch	20 Gs (2.0 mT)	9.0 cm
Mobile device	40 Gs (4.0 mT)	7.0 cm
Car key	50 Gs (5.0 mT)	6.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation is a large risk to IT equipment and pacemakers. These neodymiums generate a field that disrupts operation of digital equipment. Be aware: the invisible magnetic field acts through matter and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MPL 40x20x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.47 km/h (6.24 m/s)	1.17 J
30 mm	35.51 km/h (9.86 m/s)	2.92 J
50 mm	45.70 km/h (12.69 m/s)	4.83 J
100 mm	64.60 km/h (17.95 m/s)	9.66 J

NdFeB products are prone to chipping – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or painful pinches to fingers. Be sure to control the product during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Corrosion resistance
MPL 40x20x10 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (Flux)
MPL 40x20x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	28 125 Mx	281.2 µWb
P_c Coefficient	0.42	Low (Flat)

Flux value passing through the magnet pole. Essential parameter when building generators and motors. P_c value determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 40x20x10 / N38

Environment	Effective steel pull	Effect
Air (land)	24.62 kg	Standard
Water (riverbed)	28.19 kg (+3.57 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

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

2. Efficiency vs thickness

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

3. Heat tolerance

*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) = 0.42

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

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%

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: 020158-2026

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Component MPL 40x20x10 / N38 features a flat shape and professional pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 24.62 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.

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 40x20x10 / 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 40x20x10 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 24.62 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 40x20x10 / 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 40x20x10 / N38 model is magnetized axially (dimension 10 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 (40x20 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 40x20x10 mm, which, at a weight of 60 g, makes it an element with high energy density. The key parameter here is the holding force amounting to approximately 24.62 kg (force ~241.53 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Pros as well as cons of neodymium magnets.

Advantages

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

They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
Magnets very well protect themselves against loss of magnetization caused by external fields,
Thanks to the glossy finish, the coating of nickel, gold-plated, or silver-plated gives an aesthetic appearance,
The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Possibility of precise modeling and optimizing to complex conditions,
Versatile presence in future technologies – they find application in computer drives, electric drive systems, medical equipment, and multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in miniature devices

Cons

What to avoid - cons of neodymium magnets: weaknesses and usage proposals

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
We suggest cover - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

The specified lifting capacity refers to the peak performance, measured under ideal test conditions, specifically:

with the use of a sheet made of special test steel, ensuring maximum field concentration
whose thickness is min. 10 mm
with an ground touching surface
without any clearance between the magnet and steel
under perpendicular application of breakaway force (90-degree angle)
at standard ambient temperature

Lifting capacity in practice – influencing factors

Bear in mind that the application force will differ depending on elements below, starting with the most relevant:

Clearance – the presence of any layer (paint, tape, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
Surface structure – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Safety rules for work with neodymium magnets

Keep away from computers

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

Fire risk

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

Thermal limits

Keep cool. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Implant safety

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

GPS and phone interference

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

Warning for allergy sufferers

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, cease handling magnets and wear gloves.

Immense force

Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often faster than you can move away.

This is not a toy

Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Keep away from kids and pets.

Bone fractures

Protect your hands. Two powerful magnets will snap together instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Protective goggles

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into small pieces.

Safety First! Learn more about hazards in the article: Magnet Safety Guide.

MPL 40x20x10 / N38 - lamellar magnet

Technical specification - MPL 40x20x10 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the magnet - data

Table 1: Static force (force vs distance) - characteristics MPL 40x20x10 / N38

Table 2: Vertical force (wall) MPL 40x20x10 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 40x20x10 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 40x20x10 / N38

Table 5: Thermal stability (stability) - resistance threshold MPL 40x20x10 / N38

Table 6: Two magnets (repulsion) - field range MPL 40x20x10 / N38

Table 7: Protective zones (implants) - precautionary measures MPL 40x20x10 / N38

Table 8: Dynamics (cracking risk) - collision effects MPL 40x20x10 / N38

Table 9: Corrosion resistance MPL 40x20x10 / N38

Table 10: Construction data (Flux) MPL 40x20x10 / N38

Table 11: Physics of underwater searching MPL 40x20x10 / N38

1. Shear force

2. Efficiency vs thickness

3. Heat tolerance

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

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

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Pros as well as cons of neodymium magnets.

Advantages

Cons

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

Lifting capacity in practice – influencing factors

Safety rules for work with neodymium magnets

Keep away from computers

Fire risk

Thermal limits

Implant safety

GPS and phone interference

Warning for allergy sufferers

Immense force

This is not a toy

Bone fractures

Protective goggles

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MPL 40x20x10 / N38

Table 2: Vertical force (wall)
MPL 40x20x10 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x10 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x20x10 / N38

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x20x10 / N38

Table 6: Two magnets (repulsion) - field range
MPL 40x20x10 / N38

Table 7: Protective zones (implants) - precautionary measures
MPL 40x20x10 / N38

Table 8: Dynamics (cracking risk) - collision effects
MPL 40x20x10 / N38

Table 9: Corrosion resistance
MPL 40x20x10 / N38

Table 10: Construction data (Flux)
MPL 40x20x10 / N38

Table 11: Physics of underwater searching
MPL 40x20x10 / N38