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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

check properties »

2.76 ZŁ with VAT / pcs + price for transport

2.24 ZŁ net + 23% VAT / pcs

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Specifications as well as shape of a neodymium magnet can be calculated with our online calculation tool.

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Technical data of the product - 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

Technical analysis of the assembly - data

The following information are the direct effect of a engineering calculation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world parameters might slightly differ from theoretical values. Treat these calculations as a preliminary roadmap for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
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	medium risk
1 mm	3323 Gs 332.3 mT	2.34 kg / 5.17 LBS 2344.7 g / 23.0 N	medium risk
2 mm	2341 Gs 234.1 mT	1.16 kg / 2.56 LBS 1163.0 g / 11.4 N	weak grip
3 mm	1678 Gs 167.8 mT	0.60 kg / 1.32 LBS 597.4 g / 5.9 N	weak grip
5 mm	944 Gs 94.4 mT	0.19 kg / 0.42 LBS 189.2 g / 1.9 N	weak grip
10 mm	320 Gs 32.0 mT	0.02 kg / 0.05 LBS 21.7 g / 0.2 N	weak grip
15 mm	141 Gs 14.1 mT	0.00 kg / 0.01 LBS 4.2 g / 0.0 N	weak grip
20 mm	73 Gs 7.3 mT	0.00 kg / 0.00 LBS 1.1 g / 0.0 N	weak grip
30 mm	26 Gs 2.6 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	weak grip
50 mm	7 Gs 0.7 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Magnetic force decreases significantly per each millimeter of spacing. Keep in mind that even the smallest gap (e.g., contamination, varnish, rust) significantly weakens the grip. Neodymiums work most effectively during direct contact; air break nullifies the force. Observe how rapidly the parameters drop, when the magnet does not touch flatly to the steel surface. When calculating the mounting, avoid additional spacers.

Table 2: Vertical force (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 defines the approximate force sufficient to initiate the slippage of the magnet downwards on a upright metal surface (assuming standard friction). This parameter is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
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 upright plane (e.g., a board), it will only hold just about 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip cause that products slip faster than they pull off. Want to create a vertical fastening? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a noticeably lighter load. Application of an anti-slip pad can drastically increase the grip.

Table 4: Material efficiency (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 metal plate is unable to focus the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the pull force will drop sharply. To squeeze the maximum of this magnet's power, you require a sufficiently solid backing of steel. The saturation effect means that on delicate walls (e.g., car bodies), the holder shows lower pull force. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - resistance threshold
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

Ordinary NdFeB products change their properties power after exceeding the maximum temperature. Avoid high temperatures – high temperature can permanently demagnetize this magnet. With every degree above norm, the magnet's capacity briefly drops. Avoid using this product close to ovens exceeding its safe range. Exceeding the critical threshold will cause destruction of magnetism.

*Important note: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress than taller cylinders. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MPL 20x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral 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 significantly greater distance than a magnet and sheet combination. The connection of two magnets generates a stronger field and a larger range of operation. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the pinch force is extreme. The repulsion force is slightly lower than the connection force, but still significant.
*Field value in repulsion mode reaches ~0 Gs at the geometric center of the gap (due to field cancellation).
Note: Figures show sliding force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (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
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

Extremely neodym field poses a large risk to electronics as well as pacemakers. These NdFeB products produce a flux that destroys function of digital equipment. Remember: the unseen radiation acts through matter and glass. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (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

Magnetic elements are very brittle – a collision with steel can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Use safety goggles when playing with large magnets.

Table 9: Coating parameters (durability)
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)

The following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
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 passing through the magnet pole. Essential parameter in coil applications and motors. P_c value determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
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.

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

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

2. Efficiency vs thickness

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

3. Heat tolerance

*For standard magnets, 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.

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%

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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MW 15x1 / N38 - cylindrical magnet

0.800 ZŁ brutto / pcs

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UMS 36x10.5x6.5x8 / N38 - conical magnetic holder

22.94 ZŁ brutto / pcs

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MW 15x8 / N38 - cylindrical magnet

4.92 ZŁ brutto / pcs

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MPL 60x20x10 / N38 - lamellar magnet

68.27 ZŁ brutto / pcs

Component MPL 20x5x5 / N38 features a flat shape and industrial pulling force, making it an ideal 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. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

The key to success is sliding 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 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. Thanks to the flat surface and high force (approx. 4.42 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 20x5x5 / N38 model is magnetized axially (dimension 5 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.

This model is characterized by dimensions 20x5x5 mm, which, at a weight of 3.75 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 4.42 kg (force ~43.32 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Pros and cons of rare earth magnets.

Benefits

Besides their exceptional pulling force, neodymium magnets offer the following advantages:

Their magnetic field is maintained, and after approximately ten years it drops only by ~1% (theoretically),
Neodymium magnets prove to be remarkably resistant to loss of magnetic properties caused by external interference,
In other words, due to the shiny finish of nickel, the element gains a professional look,
Neodymium magnets create maximum magnetic induction on a their surface, which ensures high operational effectiveness,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to modularity in constructing and the capacity to adapt to unusual requirements,
Universal use in high-tech industry – they are utilized in data components, brushless drives, advanced medical instruments, and complex engineering applications.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest cover - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated forms.
Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

Highest magnetic holding force – what affects it?

The specified lifting capacity concerns the maximum value, recorded under optimal environment, specifically:

on a base made of mild steel, optimally conducting the magnetic field
possessing a thickness of minimum 10 mm to avoid saturation
with an ground contact surface
without any air gap between the magnet and steel
during detachment in a direction perpendicular to the mounting surface
at room temperature

Determinants of lifting force in real conditions

Bear in mind that the working load will differ subject to the following factors, starting with the most relevant:

Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Angle of force application – maximum parameter is obtained 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).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Material type – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was assessed by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

H&S for magnets

Bodily injuries

Risk of injury: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.

Dust is flammable

Powder produced during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Precision electronics

Navigation devices and mobile phones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Metal Allergy

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, cease working with magnets and use protective gear.

Danger to pacemakers

Individuals with a heart stimulator have to maintain an large gap from magnets. The magnetic field can interfere with the functioning of the implant.

Heat warning

Avoid heat. Neodymium magnets are susceptible to heat. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Electronic devices

Avoid bringing magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.

Respect the power

Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Shattering risk

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. We recommend safety glasses.

Adults only

Neodymium magnets are not intended for children. Accidental ingestion of several magnets may result in them pinching intestinal walls, which poses a critical condition and requires urgent medical intervention.

Caution! More info about risks in the article: Safety of working with magnets.

MPL 20x5x5 / N38 - lamellar magnet

Technical data of the product - MPL 20x5x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - data

Table 1: Static pull force (pull vs distance) - interaction chart MPL 20x5x5 / N38

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

Table 3: Vertical assembly (shearing) - vertical pull MPL 20x5x5 / N38

Table 4: Material efficiency (saturation) - power losses MPL 20x5x5 / N38

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

Table 6: Two magnets (repulsion) - forces in the system MPL 20x5x5 / N38

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

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

Table 9: Coating parameters (durability) MPL 20x5x5 / N38

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

Table 11: Hydrostatics and buoyancy MPL 20x5x5 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

See also offers

MW 15x1 / N38 - cylindrical magnet

UMS 36x10.5x6.5x8 / N38 - conical magnetic holder

MW 15x8 / N38 - cylindrical magnet

MPL 60x20x10 / N38 - lamellar magnet

Pros and cons of rare earth magnets.

Benefits

Cons

Pull force analysis

Highest magnetic holding force – what affects it?

Determinants of lifting force in real conditions

H&S for magnets

Bodily injuries

Dust is flammable

Precision electronics

Metal Allergy

Danger to pacemakers

Heat warning

Electronic devices

Respect the power

Shattering risk

Adults only

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - interaction chart
MPL 20x5x5 / N38

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

Table 3: Vertical assembly (shearing) - vertical pull
MPL 20x5x5 / N38

Table 4: Material efficiency (saturation) - power losses
MPL 20x5x5 / N38

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

Table 6: Two magnets (repulsion) - forces in the system
MPL 20x5x5 / N38

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

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

Table 9: Coating parameters (durability)
MPL 20x5x5 / N38

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

Table 11: Hydrostatics and buoyancy
MPL 20x5x5 / N38