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MPL 20x5x5 / 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 020132

GTIN/EAN: 5906301811381

5.00

length

20 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

3.75 g

Magnetization Direction

↑ axial

Load capacity

4.42 kg / 43.32 N

Magnetic Induction

456.78 mT / 4568 Gs

Coating

[NiCuNi] Nickel

technical details »

2.76 ZŁ with VAT / pcs + price for transport

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Product card - MPL 20x5x5 / N38 - lamellar magnet

Specification / characteristics - MPL 20x5x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020132
GTIN/EAN	5906301811381
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	5 mm [±0,1 mm]
Weight	3.75 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.42 kg / 43.32 N
Magnetic Induction ~ ?	456.78 mT / 4568 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x5x5 / 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 simulation of the product - data

Presented values represent the result of a physical simulation. Values are based on models for the material Nd₂Fe₁₄B. Operational parameters might slightly deviate from the simulation results. Please consider these data as a reference point for designers.

Table 1: Static force (pull vs gap) - power drop
MPL 20x5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4563 Gs 456.3 mT	4.42 kg / 9.74 lbs 4420.0 g / 43.4 N	warning
1 mm	3323 Gs 332.3 mT	2.34 kg / 5.17 lbs 2344.7 g / 23.0 N	warning
2 mm	2341 Gs 234.1 mT	1.16 kg / 2.56 lbs 1163.0 g / 11.4 N	safe
3 mm	1678 Gs 167.8 mT	0.60 kg / 1.32 lbs 597.4 g / 5.9 N	safe
5 mm	944 Gs 94.4 mT	0.19 kg / 0.42 lbs 189.2 g / 1.9 N	safe
10 mm	320 Gs 32.0 mT	0.02 kg / 0.05 lbs 21.7 g / 0.2 N	safe
15 mm	141 Gs 14.1 mT	0.00 kg / 0.01 lbs 4.2 g / 0.0 N	safe
20 mm	73 Gs 7.3 mT	0.00 kg / 0.00 lbs 1.1 g / 0.0 N	safe
30 mm	26 Gs 2.6 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	safe
50 mm	7 Gs 0.7 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Pulling power decreases significantly with every mm of distance. Remember that every additional insulation layer (e.g., contamination, varnish, rust) significantly diminishes the holding power. Magnetic products hold strongest at the point of direct contact; air break kills the force. Analyze how rapidly the pull force plummet, when the magnet does not touch tightly to the metal substrate. When planning the mounting, discard additional spacers.

Table 2: Vertical hold (wall)
MPL 20x5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.88 kg / 1.95 lbs 884.0 g / 8.7 N
1 mm	Stal (~0.2)	0.47 kg / 1.03 lbs 468.0 g / 4.6 N
2 mm	Stal (~0.2)	0.23 kg / 0.51 lbs 232.0 g / 2.3 N
3 mm	Stal (~0.2)	0.12 kg / 0.26 lbs 120.0 g / 1.2 N
5 mm	Stal (~0.2)	0.04 kg / 0.08 lbs 38.0 g / 0.4 N
10 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 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 following data calculates the estimated shear load needed to cause the shifting of the magnet downwards along a vertical steel wall (assuming standard friction coefficient). This parameter varies with the air gap between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 20x5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.33 kg / 2.92 lbs 1326.0 g / 13.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.88 kg / 1.95 lbs 884.0 g / 8.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.44 kg / 0.97 lbs 442.0 g / 4.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.21 kg / 4.87 lbs 2210.0 g / 21.7 N

When placing a magnet on a vertical surface (e.g., a car body), it will only hold only about 1/5 of its nominal power. Gravity as well as a low friction coefficient influence the fact that products slip faster than they pop off the substrate. Want to create a wall mount? Consider that the shear force is significantly lower than the maximum static pull force. On a painted metal, the element will give way down under a much lighter weight. Using a rubber layer can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
MPL 20x5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.44 kg / 0.97 lbs 442.0 g / 4.3 N
1 mm	25%	1.11 kg / 2.44 lbs 1105.0 g / 10.8 N
2 mm	50%	2.21 kg / 4.87 lbs 2210.0 g / 21.7 N
3 mm	75%	3.32 kg / 7.31 lbs 3315.0 g / 32.5 N
5 mm	100%	4.42 kg / 9.74 lbs 4420.0 g / 43.4 N
10 mm	100%	4.42 kg / 9.74 lbs 4420.0 g / 43.4 N
11 mm	100%	4.42 kg / 9.74 lbs 4420.0 g / 43.4 N
12 mm	100%	4.42 kg / 9.74 lbs 4420.0 g / 43.4 N

A thin sheet is incapable of focus the full magnetic flux, which wastes potential of the holder. If you mount a strong magnet to a weak sheet, the field will pass right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you need a suitably thick backing of metal. The saturation effect means that on delicate walls (e.g., appliance housings), the product holds weaker. We advise picking the steel cross-section based on the following data.

Table 5: Thermal resistance (stability) - thermal limit
MPL 20x5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.42 kg / 9.74 lbs 4420.0 g / 43.4 N	OK
40 °C	-2.2%	4.32 kg / 9.53 lbs 4322.8 g / 42.4 N	OK
60 °C	-4.4%	4.23 kg / 9.32 lbs 4225.5 g / 41.5 N
80 °C	-6.6%	4.13 kg / 9.10 lbs 4128.3 g / 40.5 N
100 °C	-28.8%	3.15 kg / 6.94 lbs 3147.0 g / 30.9 N

Classic neodymiums irreversibly lose power above the temperature limit. Watch out for overheating – heat can irreversibly destroy this product. As the temperature rises, the neodymium's capacity momentarily lowers. Refrain from using this product close to heaters higher than its working range. Too high temperature will result in destruction of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) risk losing magnetic properties sooner than taller cylinders. Red status in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 20x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	12.84 kg / 28.30 lbs 5 504 Gs	1.93 kg / 4.24 lbs 1925 g / 18.9 N	N/A
1 mm	9.53 kg / 21.01 lbs 7 864 Gs	1.43 kg / 3.15 lbs 1430 g / 14.0 N	8.58 kg / 18.91 lbs ~0 Gs
2 mm	6.81 kg / 15.01 lbs 6 647 Gs	1.02 kg / 2.25 lbs 1021 g / 10.0 N	6.13 kg / 13.51 lbs ~0 Gs
3 mm	4.79 kg / 10.57 lbs 5 577 Gs	0.72 kg / 1.59 lbs 719 g / 7.1 N	4.31 kg / 9.51 lbs ~0 Gs
5 mm	2.40 kg / 5.30 lbs 3 949 Gs	0.36 kg / 0.79 lbs 360 g / 3.5 N	2.16 kg / 4.77 lbs ~0 Gs
10 mm	0.55 kg / 1.21 lbs 1 888 Gs	0.08 kg / 0.18 lbs 82 g / 0.8 N	0.49 kg / 1.09 lbs ~0 Gs
20 mm	0.06 kg / 0.14 lbs 640 Gs	0.01 kg / 0.02 lbs 9 g / 0.1 N	0.06 kg / 0.13 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 84 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 53 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 35 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 24 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 18 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 13 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 wider radius than a magnet and steel combination. Such a system of two magnets produces a massive flux and a larger range of action. Designing a strong closure? Use a pair of magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the impact force is massive. The levitation is slightly lower than the connection force, but still significant.
*Field value for N-N configuration reaches ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Attention: Figures refer to shear force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 20x5x5 / 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
Timepiece	20 Gs (2.0 mT)	3.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Remote	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 real danger to electronic devices and pacemakers. These NdFeB products generate a flux that disrupts operation of digital equipment. Be aware: the unseen radiation passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MPL 20x5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.73 km/h (9.65 m/s)	0.17 J
30 mm	59.97 km/h (16.66 m/s)	0.52 J
50 mm	77.42 km/h (21.51 m/s)	0.87 J
100 mm	109.49 km/h (30.41 m/s)	1.73 J

Neodymium magnets are delicate – a strong collision with metal causes immediate chipping. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can trigger coating fragments or injury to skin. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the magnet. Wear eye protection when handling with powerful specimens.

Table 9: Surface protection spec
MPL 20x5x5 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MPL 20x5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 204 Mx	42.0 µWb
P_c Coefficient	0.54	Low (Flat)

Total magnetic flux emitted by the pole surface. Essential parameter when building generators as well as sensors. P_c value determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 20x5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	4.42 kg	Standard
Water (riverbed)	5.06 kg (+0.64 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

*Caution: On a vertical surface, the magnet retains just approx. 20-30% of its nominal pull.

2. Steel saturation

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

3. Thermal stability

*For N38 material, 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) = 0.54

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

Engineering data and GPSR

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Ecology and recycling (GPSR)

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020132-2026

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Model MPL 20x5x5 / N38 features a low profile and industrial pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 43.32 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 20x5x5 / 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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 20x5x5 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. 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 clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 20x5x5 / N38 model is magnetized through the thickness (dimension 5 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 (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 5 mm (thickness). The key parameter here is the holding force amounting to approximately 4.42 kg (force ~43.32 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Benefits

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

Their strength remains stable, and after approximately 10 years it decreases only by ~1% (according to research),
They feature excellent resistance to magnetism drop as a result of opposing magnetic fields,
The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
They feature high magnetic induction at the operating surface, which increases their power,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
Thanks to modularity in shaping and the capacity to customize to individual projects,
Huge importance in modern industrial fields – they are commonly used in magnetic memories, electric drive systems, advanced medical instruments, and industrial machines.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Due to limitations in creating threads and complicated forms in magnets, we recommend using casing - magnetic mount.
Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical when they are in the body.
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

Highest magnetic holding force – what it depends on?

The declared magnet strength concerns the peak performance, measured under optimal environment, namely:

using a base made of mild steel, serving as a circuit closing element
whose thickness reaches at least 10 mm
with a plane perfectly flat
without any air gap between the magnet and steel
under vertical application of breakaway force (90-degree angle)
in neutral thermal conditions

Lifting capacity in practice – influencing factors

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

Distance – existence of foreign body (rust, tape, air) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Plate material – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
Smoothness – ideal contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Safety rules for work with NdFeB magnets

Operating temperature

Avoid heat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Crushing force

Risk of injury: The pulling power is so great that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Keep away from computers

Very strong magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Stay away of at least 10 cm.

Fire warning

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Health Danger

Health Alert: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Safe operation

Before starting, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Eye protection

Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease working with magnets and use protective gear.

Phone sensors

Remember: neodymium magnets produce a field that disrupts precision electronics. Maintain a separation from your mobile, device, and navigation systems.

Keep away from children

Always store magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are life-threatening.

Important! More info about hazards in the article: Safety of working with magnets.

MPL 20x5x5 / N38 - lamellar magnet

Product card - MPL 20x5x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - data

Table 1: Static force (pull vs gap) - power drop MPL 20x5x5 / N38

Table 2: Vertical hold (wall) MPL 20x5x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 20x5x5 / N38

Table 4: Steel thickness (saturation) - power losses MPL 20x5x5 / N38

Table 5: Thermal resistance (stability) - thermal limit MPL 20x5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MPL 20x5x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MPL 20x5x5 / N38

Table 8: Collisions (kinetic energy) - warning MPL 20x5x5 / N38

Table 9: Surface protection spec MPL 20x5x5 / N38

Table 10: Construction data (Flux) MPL 20x5x5 / N38

Table 11: Physics of underwater searching MPL 20x5x5 / N38

1. Vertical hold

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

See also proposals

MPL 40x20x5 / N38 - lamellar magnet

SM 32x500 [2xM8] / N52 - magnetic separator

MPL 40x7x3 / N38 - lamellar magnet

MP 22x6x10 / N38 - ring magnet

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Limitations

Holding force characteristics

Highest magnetic holding force – what it depends on?

Lifting capacity in practice – influencing factors

Safety rules for work with NdFeB magnets

Operating temperature

Crushing force

Keep away from computers

Fire warning

Health Danger

Safe operation

Eye protection

Allergy Warning

Phone sensors

Keep away from children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MPL 20x5x5 / N38

Table 2: Vertical hold (wall)
MPL 20x5x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 20x5x5 / N38

Table 4: Steel thickness (saturation) - power losses
MPL 20x5x5 / N38

Table 5: Thermal resistance (stability) - thermal limit
MPL 20x5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 20x5x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 20x5x5 / N38

Table 8: Collisions (kinetic energy) - warning
MPL 20x5x5 / N38

Table 9: Surface protection spec
MPL 20x5x5 / N38

Table 10: Construction data (Flux)
MPL 20x5x5 / N38

Table 11: Physics of underwater searching
MPL 20x5x5 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.