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MPL 20x8x4 / 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 020133

GTIN/EAN: 5906301811398

5.00

length

20 mm [±0,1 mm]

Width

8 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

4.8 g

Magnetization Direction

↑ axial

Load capacity

4.79 kg / 46.98 N

Magnetic Induction

336.99 mT / 3370 Gs

Coating

[NiCuNi] Nickel

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3.67 ZŁ with VAT / pcs + price for transport

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Technical details - MPL 20x8x4 / N38 - lamellar magnet

Specification / characteristics - MPL 20x8x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020133
GTIN/EAN	5906301811398
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	8 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	4.8 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.79 kg / 46.98 N
Magnetic Induction ~ ?	336.99 mT / 3370 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x8x4 / 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

These information represent the result of a physical calculation. Values rely on models for the class Nd₂Fe₁₄B. Real-world parameters may differ from theoretical values. Use these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - interaction chart
MPL 20x8x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3368 Gs 336.8 mT	4.79 kg / 10.56 LBS 4790.0 g / 47.0 N	warning
1 mm	2818 Gs 281.8 mT	3.35 kg / 7.39 LBS 3352.3 g / 32.9 N	warning
2 mm	2266 Gs 226.6 mT	2.17 kg / 4.78 LBS 2167.6 g / 21.3 N	warning
3 mm	1794 Gs 179.4 mT	1.36 kg / 3.00 LBS 1358.6 g / 13.3 N	weak grip
5 mm	1130 Gs 113.0 mT	0.54 kg / 1.19 LBS 538.9 g / 5.3 N	weak grip
10 mm	416 Gs 41.6 mT	0.07 kg / 0.16 LBS 73.0 g / 0.7 N	weak grip
15 mm	187 Gs 18.7 mT	0.01 kg / 0.03 LBS 14.7 g / 0.1 N	weak grip
20 mm	97 Gs 9.7 mT	0.00 kg / 0.01 LBS 4.0 g / 0.0 N	weak grip
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.5 g / 0.0 N	weak grip
50 mm	9 Gs 0.9 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Grip strength drops significantly per each millimeter of distance. Remember that every additional insulation layer (e.g., dirt, paint, veneer) significantly reduces the pull force. Magnetic products operate optimally at the point of direct contact; distance weakens the power. Observe how flashily the load capacity plummet, when the product does not adhere flatly to the metal substrate. When designing the assembly, avoid unnecessary gaps.

Table 2: Slippage hold (wall)
MPL 20x8x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.96 kg / 2.11 LBS 958.0 g / 9.4 N
1 mm	Stal (~0.2)	0.67 kg / 1.48 LBS 670.0 g / 6.6 N
2 mm	Stal (~0.2)	0.43 kg / 0.96 LBS 434.0 g / 4.3 N
3 mm	Stal (~0.2)	0.27 kg / 0.60 LBS 272.0 g / 2.7 N
5 mm	Stal (~0.2)	0.11 kg / 0.24 LBS 108.0 g / 1.1 N
10 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 14.0 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

This section defines the theoretical weight limit needed to start the slippage of the magnet downwards against a vertical metal surface (considering typical friction coefficient). This parameter is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MPL 20x8x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.44 kg / 3.17 LBS 1437.0 g / 14.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.96 kg / 2.11 LBS 958.0 g / 9.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.48 kg / 1.06 LBS 479.0 g / 4.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.40 kg / 5.28 LBS 2395.0 g / 23.5 N

When mounting a holder on a upright plane (e.g., a fridge), it you can count on only approx. 1/5 of its maximum pull force. Gravity as well as a low friction coefficient influence the fact that products slide down faster than they pop off the substrate. Planning a wall mount? Consider that the sliding force is much weaker than the maximum static pull force. On a painted metal, the holder will give way down under a much lighter cargo. Utilizing a rubberized pad can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 20x8x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.48 kg / 1.06 LBS 479.0 g / 4.7 N
1 mm	25%	1.20 kg / 2.64 LBS 1197.5 g / 11.7 N
2 mm	50%	2.40 kg / 5.28 LBS 2395.0 g / 23.5 N
3 mm	75%	3.59 kg / 7.92 LBS 3592.5 g / 35.2 N
5 mm	100%	4.79 kg / 10.56 LBS 4790.0 g / 47.0 N
10 mm	100%	4.79 kg / 10.56 LBS 4790.0 g / 47.0 N
11 mm	100%	4.79 kg / 10.56 LBS 4790.0 g / 47.0 N
12 mm	100%	4.79 kg / 10.56 LBS 4790.0 g / 47.0 N

A thin metal plate is unable to focus the entire magnetic field, which squanders power of the magnet. Should you mount a strong magnet to a weak sheet, the field will penetrate right through and the attraction force will be weaker. To achieve the maximum of this magnet's power, you need a suitably thick backing of metal. The material oversaturation causes that on delicate walls (e.g., appliance housings), the holder shows lower pull force. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal resistance (stability) - thermal limit
MPL 20x8x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.79 kg / 10.56 LBS 4790.0 g / 47.0 N	OK
40 °C	-2.2%	4.68 kg / 10.33 LBS 4684.6 g / 46.0 N	OK
60 °C	-4.4%	4.58 kg / 10.10 LBS 4579.2 g / 44.9 N
80 °C	-6.6%	4.47 kg / 9.86 LBS 4473.9 g / 43.9 N
100 °C	-28.8%	3.41 kg / 7.52 LBS 3410.5 g / 33.5 N

Ordinary NdFeB products change their properties strength above the temperature limit. Avoid high temperatures – excessive heat can irreversibly destroy this magnet. With increasing heat, the magnet's force briefly decreases. Avoid using this product near heat sources higher than its safe range. Exceeding the critical threshold will cause permanent loss of magnetism.

*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) risk losing magnetic properties sooner compared to rod magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 20x8x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.19 kg / 24.67 LBS 4 784 Gs	1.68 kg / 3.70 LBS 1678 g / 16.5 N	N/A
1 mm	9.49 kg / 20.93 LBS 6 205 Gs	1.42 kg / 3.14 LBS 1424 g / 14.0 N	8.54 kg / 18.84 LBS ~0 Gs
2 mm	7.83 kg / 17.26 LBS 5 635 Gs	1.17 kg / 2.59 LBS 1175 g / 11.5 N	7.05 kg / 15.54 LBS ~0 Gs
3 mm	6.34 kg / 13.97 LBS 5 069 Gs	0.95 kg / 2.10 LBS 951 g / 9.3 N	5.70 kg / 12.57 LBS ~0 Gs
5 mm	4.02 kg / 8.85 LBS 4 035 Gs	0.60 kg / 1.33 LBS 602 g / 5.9 N	3.61 kg / 7.97 LBS ~0 Gs
10 mm	1.26 kg / 2.78 LBS 2 259 Gs	0.19 kg / 0.42 LBS 189 g / 1.9 N	1.13 kg / 2.50 LBS ~0 Gs
20 mm	0.17 kg / 0.38 LBS 832 Gs	0.03 kg / 0.06 LBS 26 g / 0.3 N	0.15 kg / 0.34 LBS ~0 Gs
50 mm	0.00 kg / 0.01 LBS 112 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 70 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 46 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 32 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 23 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 17 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 wider radius than a magnet and steel setup. Such a system of magnet-to-magnet produces a massive flux and a wider radius of operation. Designing a powerful holder? Apply two magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the collision energy is huge. The levitation is slightly lower than the attraction, but still impressive.
*Flux density between like poles is approximately ~0 Gs at the midpoint of the gap (resulting from vector opposition).
* Estimates apply to friction force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - precautionary measures
MPL 20x8x4 / N38

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

Powerful magnet radiation poses a large risk to electronics and pacemakers. These neodymiums generate a field that destroys function of digital equipment. Be aware: the invisible magnetic field acts through matter and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MPL 20x8x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	32.16 km/h (8.93 m/s)	0.19 J
30 mm	55.18 km/h (15.33 m/s)	0.56 J
50 mm	71.24 km/h (19.79 m/s)	0.94 J
100 mm	100.75 km/h (27.99 m/s)	1.88 J

Magnetic elements are very brittle – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to skin. Be sure to control the product during mounting so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
MPL 20x8x4 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MPL 20x8x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 277 Mx	52.8 µWb
P_c Coefficient	0.38	Low (Flat)

Total magnetic flux passing through the magnet pole. Key data in coil applications and motors. P_c value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 20x8x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.79 kg	Standard
Water (riverbed)	5.48 kg (+0.69 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Shear force

*Note: On a vertical wall, the magnet retains merely a fraction of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely limits the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.38

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical specification and ecology

Material specification

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: 020133-2026

Measurement Calculator

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 20x8x4 mm and a weight of 4.8 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 4.79 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 20x8x4 / 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.

They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 4.79 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.

Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. 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.

Standardly, the MPL 20x8x4 / N38 model is magnetized through the thickness (dimension 4 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

The presented product is a neodymium magnet with precisely defined parameters: 20 mm (length), 8 mm (width), and 4 mm (thickness). The key parameter here is the holding force amounting to approximately 4.79 kg (force ~46.98 N), which, with such a flat 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.

Strengths

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

They retain full power for almost 10 years – the loss is just ~1% (in theory),
Neodymium magnets are distinguished by extremely resistant to loss of magnetic properties caused by external magnetic fields,
In other words, due to the glossy surface of silver, the element becomes visually attractive,
The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of exact forming and optimizing to concrete needs,
Fundamental importance in future technologies – they are utilized in mass storage devices, electromotive mechanisms, precision medical tools, as well as other advanced devices.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:

They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in creating nuts and complicated forms in magnets, we recommend using casing - magnetic mount.
Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these devices can disrupt the diagnostic process 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

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

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

using a plate made of high-permeability steel, serving as a ideal flux conductor
whose thickness is min. 10 mm
characterized by even structure
with zero gap (no coatings)
for force applied at a right angle (in the magnet axis)
at conditions approx. 20°C

Lifting capacity in real conditions – factors

Real force impacted by specific conditions, including (from priority):

Clearance – the presence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
Direction of force – highest force is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Metal type – not every steel reacts the same. High carbon content worsen the interaction with the magnet.
Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Warnings

Medical implants

For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Do not drill into magnets

Combustion risk: Rare earth powder is highly flammable. Do not process magnets in home conditions as this risks ignition.

Eye protection

Neodymium magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets leads to them breaking into small pieces.

Avoid contact if allergic

Studies show that the nickel plating (the usual finish) is a strong allergen. If you have an allergy, refrain from direct skin contact and select versions in plastic housing.

Bone fractures

Watch your fingers. Two powerful magnets will join instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Magnetic interference

Navigation devices and smartphones are highly susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Safe distance

Do not bring magnets close to a wallet, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.

Do not overheat magnets

Control the heat. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.

Choking Hazard

Absolutely keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are tragic.

Immense force

Handle magnets with awareness. Their huge power can shock even experienced users. Be vigilant and respect their power.

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

MPL 20x8x4 / N38 - lamellar magnet

Technical details - MPL 20x8x4 / 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 force (pull vs gap) - interaction chart MPL 20x8x4 / N38

Table 2: Slippage hold (wall) MPL 20x8x4 / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 20x8x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 20x8x4 / N38

Table 5: Thermal resistance (stability) - thermal limit MPL 20x8x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MPL 20x8x4 / N38

Table 7: Protective zones (electronics) - precautionary measures MPL 20x8x4 / N38

Table 8: Dynamics (kinetic energy) - collision effects MPL 20x8x4 / N38

Table 9: Corrosion resistance MPL 20x8x4 / N38

Table 10: Construction data (Pc) MPL 20x8x4 / N38

Table 11: Hydrostatics and buoyancy MPL 20x8x4 / N38

1. Shear force

2. Steel saturation

3. Thermal stability

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

Material specification

Environmental data

Pulling force

Magnetic Field

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MW 20x5 / N38 - cylindrical magnet

Pros as well as cons of neodymium magnets.

Strengths

Weaknesses

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

Lifting capacity in real conditions – factors

Warnings

Medical implants

Do not drill into magnets

Eye protection

Avoid contact if allergic

Bone fractures

Magnetic interference

Safe distance

Do not overheat magnets

Choking Hazard

Immense force

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MPL 20x8x4 / N38

Table 2: Slippage hold (wall)
MPL 20x8x4 / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 20x8x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 20x8x4 / N38

Table 5: Thermal resistance (stability) - thermal limit
MPL 20x8x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 20x8x4 / N38

Table 7: Protective zones (electronics) - precautionary measures
MPL 20x8x4 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MPL 20x8x4 / N38

Table 9: Corrosion resistance
MPL 20x8x4 / N38

Table 10: Construction data (P_c)
MPL 20x8x4 / N38

Table 11: Hydrostatics and buoyancy
MPL 20x8x4 / N38