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MPL 20x5x3 / 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 020131

GTIN/EAN: 5906301811374

5.00

length

20 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

2.25 g

Magnetization Direction

↑ axial

Load capacity

3.46 kg / 33.93 N

Magnetic Induction

358.88 mT / 3589 Gs

Coating

[NiCuNi] Nickel

technical specifications »

1.058 ZŁ with VAT / pcs + price for transport

0.860 ZŁ net + 23% VAT / pcs

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Technical parameters - MPL 20x5x3 / N38 - lamellar magnet

Specification / characteristics - MPL 20x5x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020131
GTIN/EAN	5906301811374
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	20 mm [±0,1 mm]
Width	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	2.25 g
Magnetization Direction	↑ axial
Load capacity ~ ?	3.46 kg / 33.93 N
Magnetic Induction ~ ?	358.88 mT / 3589 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x5x3 / 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 analysis of the assembly - data

These values represent the result of a physical simulation. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Real-world performance might slightly differ. Use these calculations as a reference point during assembly planning.

Table 1: Static pull force (pull vs distance) - power drop
MPL 20x5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3585 Gs 358.5 mT	3.46 kg / 7.63 lbs 3460.0 g / 33.9 N	medium risk
1 mm	2619 Gs 261.9 mT	1.85 kg / 4.07 lbs 1846.6 g / 18.1 N	weak grip
2 mm	1818 Gs 181.8 mT	0.89 kg / 1.96 lbs 889.8 g / 8.7 N	weak grip
3 mm	1279 Gs 127.9 mT	0.44 kg / 0.97 lbs 440.2 g / 4.3 N	weak grip
5 mm	696 Gs 69.6 mT	0.13 kg / 0.29 lbs 130.6 g / 1.3 N	weak grip
10 mm	225 Gs 22.5 mT	0.01 kg / 0.03 lbs 13.6 g / 0.1 N	weak grip
15 mm	97 Gs 9.7 mT	0.00 kg / 0.01 lbs 2.5 g / 0.0 N	weak grip
20 mm	49 Gs 4.9 mT	0.00 kg / 0.00 lbs 0.6 g / 0.0 N	weak grip
30 mm	17 Gs 1.7 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	weak grip
50 mm	4 Gs 0.4 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 the smallest gap (e.g., dirt, varnish, dust) noticeably diminishes the holding power. Neodymiums hold strongest at the point of direct contact; gap weakens the power. See how flashily the pull force fall, when the product does not touch directly to the steel surface. When calculating the assembly, eliminate unnecessary gaps.

Table 2: Shear force (wall)
MPL 20x5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.69 kg / 1.53 lbs 692.0 g / 6.8 N
1 mm	Stal (~0.2)	0.37 kg / 0.82 lbs 370.0 g / 3.6 N
2 mm	Stal (~0.2)	0.18 kg / 0.39 lbs 178.0 g / 1.7 N
3 mm	Stal (~0.2)	0.09 kg / 0.19 lbs 88.0 g / 0.9 N
5 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 26.0 g / 0.3 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 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 calculates the approximate force needed to initiate the slippage of the magnet downwards along a vertical steel wall (considering standard friction coefficient). This value varies with the air gap between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MPL 20x5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.04 kg / 2.29 lbs 1038.0 g / 10.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.69 kg / 1.53 lbs 692.0 g / 6.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.35 kg / 0.76 lbs 346.0 g / 3.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.73 kg / 3.81 lbs 1730.0 g / 17.0 N

When placing a holder on a upright wall (e.g., a car body), it you can count on just about 1/5 of its maximum pull force. Gravitational force as well as a weak degree of grip mean that holders slide down easier than they pop off the substrate. Designing a vertical fastening? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will slide down under a significantly smaller load. Using a rubber layer can significantly improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 20x5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.35 kg / 0.76 lbs 346.0 g / 3.4 N
1 mm	25%	0.87 kg / 1.91 lbs 865.0 g / 8.5 N
2 mm	50%	1.73 kg / 3.81 lbs 1730.0 g / 17.0 N
3 mm	75%	2.59 kg / 5.72 lbs 2595.0 g / 25.5 N
5 mm	100%	3.46 kg / 7.63 lbs 3460.0 g / 33.9 N
10 mm	100%	3.46 kg / 7.63 lbs 3460.0 g / 33.9 N
11 mm	100%	3.46 kg / 7.63 lbs 3460.0 g / 33.9 N
12 mm	100%	3.46 kg / 7.63 lbs 3460.0 g / 33.9 N

A too thin steel cannot absorb the full magnetic flux, which wastes potential of the holder. If you mount a strong magnet to a weak sheet, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this magnet's power, you need a suitably thick piece of metal. The saturation effect means that on delicate walls (e.g., thin profiles), the product holds weaker. We recommend selecting the steel cross-section according to the table below.

Table 5: Working in heat (stability) - thermal limit
MPL 20x5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	3.46 kg / 7.63 lbs 3460.0 g / 33.9 N	OK
40 °C	-2.2%	3.38 kg / 7.46 lbs 3383.9 g / 33.2 N	OK
60 °C	-4.4%	3.31 kg / 7.29 lbs 3307.8 g / 32.4 N
80 °C	-6.6%	3.23 kg / 7.12 lbs 3231.6 g / 31.7 N
100 °C	-28.8%	2.46 kg / 5.43 lbs 2463.5 g / 24.2 N

Standard neodymium magnets change their properties strength past the thermal threshold. Protect against heat – excessive heat can irreversibly demagnetize this magnet. With increasing heat, the magnet's capacity momentarily decreases. Refrain from using this magnet close to heaters exceeding its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetism.

*Technical advisory: Thermal stability is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) may lose charge permanently sooner than long magnets. The danger warning in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field collision
MPL 20x5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	7.92 kg / 17.47 lbs 4 860 Gs	1.19 kg / 2.62 lbs 1189 g / 11.7 N	N/A
1 mm	5.94 kg / 13.10 lbs 6 209 Gs	0.89 kg / 1.97 lbs 891 g / 8.7 N	5.35 kg / 11.79 lbs ~0 Gs
2 mm	4.23 kg / 9.32 lbs 5 238 Gs	0.63 kg / 1.40 lbs 634 g / 6.2 N	3.81 kg / 8.39 lbs ~0 Gs
3 mm	2.94 kg / 6.49 lbs 4 369 Gs	0.44 kg / 0.97 lbs 441 g / 4.3 N	2.65 kg / 5.84 lbs ~0 Gs
5 mm	1.42 kg / 3.14 lbs 3 039 Gs	0.21 kg / 0.47 lbs 213 g / 2.1 N	1.28 kg / 2.82 lbs ~0 Gs
10 mm	0.30 kg / 0.66 lbs 1 393 Gs	0.04 kg / 0.10 lbs 45 g / 0.4 N	0.27 kg / 0.59 lbs ~0 Gs
20 mm	0.03 kg / 0.07 lbs 450 Gs	0.00 kg / 0.01 lbs 5 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs
50 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
60 mm	0.00 kg / 0.00 lbs 34 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 23 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 16 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 11 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 8 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 much further distance than a magnet and sheet combination. The setup of magnet-to-magnet produces a massive flux and a larger range of performance. Want to build a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still significant.
*Field value between like poles drops to ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Attention: Calculations refer to friction force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MPL 20x5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	5.0 cm
Hearing aid	10 Gs (1.0 mT)	4.0 cm
Mechanical watch	20 Gs (2.0 mT)	3.0 cm
Mobile device	40 Gs (4.0 mT)	2.5 cm
Car key	50 Gs (5.0 mT)	2.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a serious hazard to IT equipment and medical implants. These neodymiums generate a field that destroys function of sensitive medical devices. Be aware: the unseen radiation penetrates the body and glass. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MPL 20x5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	39.65 km/h (11.01 m/s)	0.14 J
30 mm	68.50 km/h (19.03 m/s)	0.41 J
50 mm	88.43 km/h (24.56 m/s)	0.68 J
100 mm	125.06 km/h (34.74 m/s)	1.36 J

Neodymium magnets are prone to chipping – a strong collision with metal causes immediate chipping. Control the attraction moment – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or painful pinches to fingers. Always hold the magnet during installation so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Surface protection spec
MPL 20x5x3 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MPL 20x5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 197 Mx	32.0 µWb
P_c Coefficient	0.36	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators and motors. P_c value defines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 20x5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	3.46 kg	Standard
Water (riverbed)	3.96 kg (+0.50 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. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet holds only ~20% of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.

3. Thermal stability

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.36

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.

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%

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: 020131-2026

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Component MPL 20x5x3 / N38 features a low profile and industrial pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 33.93 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 block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 3.46 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 wind generators and material handling systems. Thanks to the flat surface and high force (approx. 3.46 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 20x5x3 / N38, we recommend utilizing strong epoxy glues (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 roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (20x5 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: 20 mm (length), 5 mm (width), and 3 mm (thickness). It is a magnetic block with dimensions 20x5x3 mm and a self-weight of 2.25 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They have unchanged lifting capacity, and over around 10 years their attraction force decreases symbolically – ~1% (according to theory),
They retain their magnetic properties even under strong external field,
The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to present itself better,
Magnets possess very high magnetic induction on the working surface,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Thanks to flexibility in constructing and the ability to modify to complex applications,
Fundamental importance in advanced technology sectors – they are commonly used in hard drives, electromotive mechanisms, diagnostic systems, also technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Drawbacks and weaknesses of neodymium magnets: tips and applications.

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in producing nuts and complicated shapes in magnets, we recommend using casing - magnetic mechanism.
Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

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

Magnet power is the result of a measurement for ideal contact conditions, assuming:

on a block made of structural steel, perfectly concentrating the magnetic flux
possessing a thickness of min. 10 mm to avoid saturation
with a plane free of scratches
with direct contact (no impurities)
during detachment in a direction perpendicular to the plane
in stable room temperature

Practical aspects of lifting capacity – factors

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

Distance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted to the other side.
Steel grade – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with neodymium magnets

Dust explosion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Do not overheat magnets

Control the heat. Exposing the magnet to high heat will destroy its magnetic structure and strength.

Metal Allergy

Studies show that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, avoid touching magnets with bare hands or choose encased magnets.

Material brittleness

Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. We recommend safety glasses.

Safe operation

Handle magnets consciously. Their powerful strength can shock even experienced users. Be vigilant and respect their power.

GPS and phone interference

A strong magnetic field interferes with the functioning of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to prevent damaging the sensors.

Electronic hazard

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Danger to the youngest

Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Pacemakers

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

Bodily injuries

Protect your hands. Two large magnets will snap together instantly with a force of massive weight, destroying anything in their path. Be careful!

Danger! Want to know more? Check our post: Why are neodymium magnets dangerous?

MPL 20x5x3 / N38 - lamellar magnet

Technical parameters - MPL 20x5x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - data

Table 1: Static pull force (pull vs distance) - power drop MPL 20x5x3 / N38

Table 2: Shear force (wall) MPL 20x5x3 / N38

Table 3: Wall mounting (sliding) - vertical pull MPL 20x5x3 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MPL 20x5x3 / N38

Table 5: Working in heat (stability) - thermal limit MPL 20x5x3 / N38

Table 6: Two magnets (repulsion) - field collision MPL 20x5x3 / N38

Table 7: Safety (HSE) (implants) - warnings MPL 20x5x3 / N38

Table 8: Collisions (cracking risk) - warning MPL 20x5x3 / N38

Table 9: Surface protection spec MPL 20x5x3 / N38

Table 10: Electrical data (Flux) MPL 20x5x3 / N38

Table 11: Physics of underwater searching MPL 20x5x3 / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Thermal stability

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

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Advantages

Cons

Holding force characteristics

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

Practical aspects of lifting capacity – factors

Safety rules for work with neodymium magnets

Dust explosion hazard

Do not overheat magnets

Metal Allergy

Material brittleness

Safe operation

GPS and phone interference

Electronic hazard

Danger to the youngest

Pacemakers

Bodily injuries

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MPL 20x5x3 / N38

Table 2: Shear force (wall)
MPL 20x5x3 / N38

Table 3: Wall mounting (sliding) - vertical pull
MPL 20x5x3 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 20x5x3 / N38

Table 5: Working in heat (stability) - thermal limit
MPL 20x5x3 / N38

Table 6: Two magnets (repulsion) - field collision
MPL 20x5x3 / N38

Table 7: Safety (HSE) (implants) - warnings
MPL 20x5x3 / N38

Table 8: Collisions (cracking risk) - warning
MPL 20x5x3 / N38

Table 9: Surface protection spec
MPL 20x5x3 / N38

Table 10: Electrical data (Flux)
MPL 20x5x3 / N38

Table 11: Physics of underwater searching
MPL 20x5x3 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.