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MPL 40x5x3 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

lamellar magnet

Catalog no 020402

GTIN/EAN: 5906301811916

length

40 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

4.5 g

Magnetization Direction

↑ axial

Load capacity

7.33 kg / 71.91 N

Magnetic Induction

348.83 mT / 3488 Gs

Coating

[NiCuNi] Nickel

technical specifications »

6.65 ZŁ with VAT / pcs + price for transport

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Force as well as structure of a neodymium magnet can be analyzed on our force calculator.

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Physical properties - MPL 40x5x3 / N38 - lamellar magnet

Specification / characteristics - MPL 40x5x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020402
GTIN/EAN	5906301811916
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	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	4.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.33 kg / 71.91 N
Magnetic Induction ~ ?	348.83 mT / 3488 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x5x3 / 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 modeling of the magnet - data

Presented values constitute the outcome of a mathematical analysis. Values were calculated on models for the class Nd₂Fe₁₄B. Operational conditions may differ. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MPL 40x5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3485 Gs 348.5 mT	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N	warning
1 mm	2529 Gs 252.9 mT	3.86 kg / 8.51 lbs 3859.9 g / 37.9 N	warning
2 mm	1741 Gs 174.1 mT	1.83 kg / 4.03 lbs 1829.7 g / 17.9 N	low risk
3 mm	1217 Gs 121.7 mT	0.89 kg / 1.97 lbs 893.7 g / 8.8 N	low risk
5 mm	664 Gs 66.4 mT	0.27 kg / 0.59 lbs 265.9 g / 2.6 N	low risk
10 mm	235 Gs 23.5 mT	0.03 kg / 0.07 lbs 33.5 g / 0.3 N	low risk
15 mm	116 Gs 11.6 mT	0.01 kg / 0.02 lbs 8.2 g / 0.1 N	low risk
20 mm	67 Gs 6.7 mT	0.00 kg / 0.01 lbs 2.7 g / 0.0 N	low risk
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 lbs 0.5 g / 0.0 N	low risk
50 mm	8 Gs 0.8 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	low risk

Magnetic force drops sharply with every mm of gap. Note that every additional insulation layer (e.g., dirt, paint, dust) significantly diminishes the holding power. Magnets operate optimally at the point of direct contact; air break nullifies the force. Analyze how rapidly the parameters plummet, when the magnet does not adhere directly to the steel surface. When designing the arrangement, avoid redundant distances.

Table 2: Shear capacity (vertical surface)
MPL 40x5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.47 kg / 3.23 lbs 1466.0 g / 14.4 N
1 mm	Stal (~0.2)	0.77 kg / 1.70 lbs 772.0 g / 7.6 N
2 mm	Stal (~0.2)	0.37 kg / 0.81 lbs 366.0 g / 3.6 N
3 mm	Stal (~0.2)	0.18 kg / 0.39 lbs 178.0 g / 1.7 N
5 mm	Stal (~0.2)	0.05 kg / 0.12 lbs 54.0 g / 0.5 N
10 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 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 presents the theoretical weight limit necessary to cause the slippage of the magnet downwards along a vertical steel plate (considering standard friction). This parameter is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.20 kg / 4.85 lbs 2199.0 g / 21.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.47 kg / 3.23 lbs 1466.0 g / 14.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.62 lbs 733.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.67 kg / 8.08 lbs 3665.0 g / 36.0 N

When hanging a magnet on a vertical plane (e.g., a car body), it you can count on only about 20%-30% of its nominal power. Gravity as well as a weak degree of grip cause that holders slip easier than they detach. Designing a wall mount? Remember that the sliding force is much weaker than the maximum static pull force. On a painted metal, the holder will slip down under a noticeably lighter weight. Using a rubber pad can drastically improve the result.

Table 4: Steel thickness (saturation) - power losses
MPL 40x5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.73 kg / 1.62 lbs 733.0 g / 7.2 N
1 mm	25%	1.83 kg / 4.04 lbs 1832.5 g / 18.0 N
2 mm	50%	3.67 kg / 8.08 lbs 3665.0 g / 36.0 N
3 mm	75%	5.50 kg / 12.12 lbs 5497.5 g / 53.9 N
5 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N
10 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N
11 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N
12 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N

A thin sheet is unable to conduct the full magnetic flux, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the flux will pass right through and the pull force will drop sharply. To squeeze the maximum of this magnet's potential, you require a sufficiently solid element of steel. The material oversaturation means that on delicate walls (e.g., thin profiles), the magnet shows lower pull force. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N	OK
40 °C	-2.2%	7.17 kg / 15.80 lbs 7168.7 g / 70.3 N	OK
60 °C	-4.4%	7.01 kg / 15.45 lbs 7007.5 g / 68.7 N
80 °C	-6.6%	6.85 kg / 15.09 lbs 6846.2 g / 67.2 N
100 °C	-28.8%	5.22 kg / 11.51 lbs 5219.0 g / 51.2 N

Ordinary NdFeB products irreversibly lose power past the thermal threshold. Protect against heat – high temperature can permanently destroy this magnet. With every degree above norm, the neodymium's capacity momentarily drops. Refrain from using this magnet in hot environments exceeding its operating temperature limit. Ignoring the limit will lead to destruction of magnetic properties.

*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Thin magnets (low Pc) risk losing magnetic properties sooner than long magnets. The danger warning in the table points to permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 40x5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	14.97 kg / 33.01 lbs 4 697 Gs	2.25 kg / 4.95 lbs 2246 g / 22.0 N	N/A
1 mm	11.16 kg / 24.61 lbs 6 017 Gs	1.67 kg / 3.69 lbs 1674 g / 16.4 N	10.04 kg / 22.15 lbs ~0 Gs
2 mm	7.88 kg / 17.38 lbs 5 058 Gs	1.18 kg / 2.61 lbs 1183 g / 11.6 N	7.10 kg / 15.64 lbs ~0 Gs
3 mm	5.44 kg / 11.99 lbs 4 201 Gs	0.82 kg / 1.80 lbs 816 g / 8.0 N	4.90 kg / 10.79 lbs ~0 Gs
5 mm	2.59 kg / 5.71 lbs 2 899 Gs	0.39 kg / 0.86 lbs 389 g / 3.8 N	2.33 kg / 5.14 lbs ~0 Gs
10 mm	0.54 kg / 1.20 lbs 1 328 Gs	0.08 kg / 0.18 lbs 81 g / 0.8 N	0.49 kg / 1.08 lbs ~0 Gs
20 mm	0.07 kg / 0.15 lbs 471 Gs	0.01 kg / 0.02 lbs 10 g / 0.1 N	0.06 kg / 0.14 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 83 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 55 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 38 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 27 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 20 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 15 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnetic products interact from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Designing a strong closure? Apply two magnets instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still significant.
*Flux density between like poles reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
Note: Results refer to sliding force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MPL 40x5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a large risk to electronics as well as medical implants. These neodymiums generate a flux that disrupts operation of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and glass. Increased vigilance must be exercised by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, remotes, speakers, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MPL 40x5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	40.82 km/h (11.34 m/s)	0.29 J
30 mm	70.50 km/h (19.58 m/s)	0.86 J
50 mm	91.02 km/h (25.28 m/s)	1.44 J
100 mm	128.71 km/h (35.75 m/s)	2.88 J

Magnetic elements are prone to chipping – a strong collision with metal risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can trigger coating fragments or injury to skin. Be sure to control the product during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Coating parameters (durability)
MPL 40x5x3 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MPL 40x5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 123 Mx	51.2 µWb
P_c Coefficient	0.27	Low (Flat)

Flux value emitted by the pole surface. Key data for generator designers and motors. P_c value defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	7.33 kg	Standard
Water (riverbed)	8.39 kg (+1.06 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. Vertical hold

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

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) severely weakens the holding force.

3. Heat tolerance

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.27

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

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%

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: 020402-2026

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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x5x3 mm and a weight of 4.5 g, guarantees premium class connection. This magnetic block with a force of 71.91 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 40x5x3 / 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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

They constitute a key element in the production of wind generators and material handling systems. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. 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. 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: 40 mm (length), 5 mm (width), and 3 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 7.33 kg (force ~71.91 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Apart from their notable holding force, neodymium magnets have these key benefits:

They retain attractive force for around ten years – the drop is just ~1% (according to analyses),
Magnets very well resist against demagnetization caused by external fields,
In other words, due to the glossy finish of gold, the element becomes visually attractive,
Magnets have impressive magnetic induction on the active area,
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 flexibility in constructing and the capacity to adapt to individual projects,
Universal use in future technologies – they are utilized in mass storage devices, drive modules, advanced medical instruments, and multitasking production systems.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
We suggest a housing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex shapes.
Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical when they are in the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Magnetic strength at its maximum – what affects it?

The lifting capacity listed is a measurement result executed under specific, ideal conditions:

using a plate made of high-permeability steel, serving as a ideal flux conductor
possessing a massiveness of minimum 10 mm to avoid saturation
characterized by smoothness
under conditions of gap-free contact (metal-to-metal)
during pulling in a direction perpendicular to the plane
at temperature room level

Determinants of lifting force in real conditions

In real-world applications, the actual holding force depends on a number of factors, presented from the most important:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
Direction of force – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
Base massiveness – too thin plate does not accept the full field, causing part of the power to be wasted to the other side.
Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
Surface finish – full contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
Temperature – temperature increase results in weakening of force. Check the thermal limit for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the load capacity.

Safe handling of neodymium magnets

Life threat

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

Crushing risk

Large magnets can crush fingers instantly. Do not place your hand betwixt two attracting surfaces.

Nickel coating and allergies

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness happens, immediately stop handling magnets and use protective gear.

Fire risk

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Keep away from children

Strictly store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are life-threatening.

Threat to electronics

Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Heat warning

Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Eye protection

Neodymium magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets will cause them breaking into small pieces.

Magnetic interference

A powerful magnetic field disrupts the operation of compasses in phones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.

Immense force

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

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

MPL 40x5x3 / N38 - lamellar magnet

Physical properties - MPL 40x5x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - data

Table 1: Static pull force (pull vs gap) - power drop MPL 40x5x3 / N38

Table 2: Shear capacity (vertical surface) MPL 40x5x3 / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 40x5x3 / N38

Table 4: Steel thickness (saturation) - power losses MPL 40x5x3 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MPL 40x5x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MPL 40x5x3 / N38

Table 7: Protective zones (implants) - warnings MPL 40x5x3 / N38

Table 8: Impact energy (cracking risk) - collision effects MPL 40x5x3 / N38

Table 9: Coating parameters (durability) MPL 40x5x3 / N38

Table 10: Electrical data (Flux) MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy MPL 40x5x3 / N38

1. Vertical hold

2. Steel saturation

3. Heat tolerance

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Field

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Strengths as well as weaknesses of rare earth magnets.

Strengths

Weaknesses

Pull force analysis

Magnetic strength at its maximum – what affects it?

Determinants of lifting force in real conditions

Safe handling of neodymium magnets

Life threat

Crushing risk

Nickel coating and allergies

Fire risk

Keep away from children

Threat to electronics

Heat warning

Eye protection

Magnetic interference

Immense force

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MPL 40x5x3 / N38

Table 2: Shear capacity (vertical surface)
MPL 40x5x3 / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x5x3 / N38

Table 4: Steel thickness (saturation) - power losses
MPL 40x5x3 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x5x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 40x5x3 / N38

Table 7: Protective zones (implants) - warnings
MPL 40x5x3 / N38

Table 8: Impact energy (cracking risk) - collision effects
MPL 40x5x3 / N38

Table 9: Coating parameters (durability)
MPL 40x5x3 / N38

Table 10: Electrical data (Flux)
MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38