Product available Ships tomorrow

MPL 20x20x20 / 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 020129

GTIN/EAN: 5906301811350

5.00

length

20 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

60 g

Magnetization Direction

↑ axial

Load capacity

15.40 kg / 151.12 N

Magnetic Induction

540.22 mT / 5402 Gs

Coating

[NiCuNi] Nickel

check specifications »

33.21 ZŁ with VAT / pcs + price for transport

27.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

27.00 ZŁ

33.21 ZŁ

price from 30 pcs

25.38 ZŁ

31.22 ZŁ

price from 100 pcs

23.76 ZŁ

29.22 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Call us +48 888 99 98 98 alternatively contact us through inquiry form the contact page.
Weight and structure of magnetic components can be calculated with our magnetic calculator.

Order by 14:00 and we’ll ship today!

Technical details - MPL 20x20x20 / N38 - lamellar magnet

Specification / characteristics - MPL 20x20x20 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020129
GTIN/EAN	5906301811350
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	20 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	60 g
Magnetization Direction	↑ axial
Load capacity ~ ?	15.40 kg / 151.12 N
Magnetic Induction ~ ?	540.22 mT / 5402 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x20x20 / N38 - lamellar magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Engineering modeling of the product - data

The following information constitute the result of a engineering simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Operational performance may deviate from the simulation results. Treat these data as a reference point when designing systems.

Table 1: Static force (pull vs gap) - characteristics
MPL 20x20x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5400 Gs 540.0 mT	15.40 kg / 33.95 lbs 15400.0 g / 151.1 N	critical level
1 mm	4910 Gs 491.0 mT	12.73 kg / 28.07 lbs 12732.2 g / 124.9 N	critical level
2 mm	4423 Gs 442.3 mT	10.33 kg / 22.77 lbs 10328.3 g / 101.3 N	critical level
3 mm	3955 Gs 395.5 mT	8.26 kg / 18.21 lbs 8258.3 g / 81.0 N	warning
5 mm	3114 Gs 311.4 mT	5.12 kg / 11.29 lbs 5120.3 g / 50.2 N	warning
10 mm	1671 Gs 167.1 mT	1.48 kg / 3.25 lbs 1475.0 g / 14.5 N	low risk
15 mm	936 Gs 93.6 mT	0.46 kg / 1.02 lbs 463.0 g / 4.5 N	low risk
20 mm	562 Gs 56.2 mT	0.17 kg / 0.37 lbs 167.1 g / 1.6 N	low risk
30 mm	244 Gs 24.4 mT	0.03 kg / 0.07 lbs 31.3 g / 0.3 N	low risk
50 mm	73 Gs 7.3 mT	0.00 kg / 0.01 lbs 2.8 g / 0.0 N	low risk

Pulling power decreases drastically per each millimeter of gap. Remember that even a microscopic distance (e.g., dirt, varnish, rust) strongly reduces the pull force. Magnets operate most effectively at the point of direct contact; gap weakens the force. Observe how quickly the pull force fall, when the product does not adhere directly to the metal substrate. When designing the assembly, discard unnecessary gaps.

Table 2: Vertical force (vertical surface)
MPL 20x20x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.08 kg / 6.79 lbs 3080.0 g / 30.2 N
1 mm	Stal (~0.2)	2.55 kg / 5.61 lbs 2546.0 g / 25.0 N
2 mm	Stal (~0.2)	2.07 kg / 4.55 lbs 2066.0 g / 20.3 N
3 mm	Stal (~0.2)	1.65 kg / 3.64 lbs 1652.0 g / 16.2 N
5 mm	Stal (~0.2)	1.02 kg / 2.26 lbs 1024.0 g / 10.0 N
10 mm	Stal (~0.2)	0.30 kg / 0.65 lbs 296.0 g / 2.9 N
15 mm	Stal (~0.2)	0.09 kg / 0.20 lbs 92.0 g / 0.9 N
20 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 34.0 g / 0.3 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data presents the approximate weight limit needed to start the shifting of the magnet downwards on a upright steel wall (considering typical friction coefficient). This parameter is a function of the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MPL 20x20x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	4.62 kg / 10.19 lbs 4620.0 g / 45.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.08 kg / 6.79 lbs 3080.0 g / 30.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.54 kg / 3.40 lbs 1540.0 g / 15.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	7.70 kg / 16.98 lbs 7700.0 g / 75.5 N

When hanging a holder on a vertical wall (e.g., a board), it will only hold barely about 1/5 of nominal attraction strength. Gravity and a weak degree of grip mean that products slide down easier than they detach. Planning a wall mount? Note that the sliding force is much weaker than the maximum static pull force. On a painted metal, the element will slide down under a noticeably lighter weight. Utilizing a rubberized coating can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MPL 20x20x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.77 kg / 1.70 lbs 770.0 g / 7.6 N
1 mm	13%	1.93 kg / 4.24 lbs 1925.0 g / 18.9 N
2 mm	25%	3.85 kg / 8.49 lbs 3850.0 g / 37.8 N
3 mm	38%	5.78 kg / 12.73 lbs 5775.0 g / 56.7 N
5 mm	63%	9.63 kg / 21.22 lbs 9625.0 g / 94.4 N
10 mm	100%	15.40 kg / 33.95 lbs 15400.0 g / 151.1 N
11 mm	100%	15.40 kg / 33.95 lbs 15400.0 g / 151.1 N
12 mm	100%	15.40 kg / 33.95 lbs 15400.0 g / 151.1 N

A thin sheet is incapable of focus the full magnetic flux, which squanders power of the magnet. If you install a neodymium to a thin surface, the field will penetrate right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's potential, you need a suitably thick element of steel. The saturation phenomenon means that on sheet metal structures (e.g., appliance housings), the product holds weaker. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 20x20x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	15.40 kg / 33.95 lbs 15400.0 g / 151.1 N	OK
40 °C	-2.2%	15.06 kg / 33.20 lbs 15061.2 g / 147.8 N	OK
60 °C	-4.4%	14.72 kg / 32.46 lbs 14722.4 g / 144.4 N	OK
80 °C	-6.6%	14.38 kg / 31.71 lbs 14383.6 g / 141.1 N
100 °C	-28.8%	10.96 kg / 24.17 lbs 10964.8 g / 107.6 N

Classic neodymiums lose parameters after exceeding the maximum temperature. Protect against heat – excessive heat can permanently destroy this magnet. With every degree above norm, the neodymium's force momentarily drops. Refrain from using this magnet in hot environments exceeding its working range. Exceeding the critical threshold will result in irreversible degradation of magnetism.

*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) risk losing magnetic properties sooner compared to rod magnets. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MPL 20x20x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	71.92 kg / 158.55 lbs 5 962 Gs	10.79 kg / 23.78 lbs 10787 g / 105.8 N	N/A
1 mm	65.60 kg / 144.63 lbs 10 316 Gs	9.84 kg / 21.69 lbs 9840 g / 96.5 N	59.04 kg / 130.16 lbs ~0 Gs
2 mm	59.46 kg / 131.08 lbs 9 821 Gs	8.92 kg / 19.66 lbs 8919 g / 87.5 N	53.51 kg / 117.97 lbs ~0 Gs
3 mm	53.66 kg / 118.30 lbs 9 329 Gs	8.05 kg / 17.74 lbs 8049 g / 79.0 N	48.29 kg / 106.47 lbs ~0 Gs
5 mm	43.20 kg / 95.24 lbs 8 371 Gs	6.48 kg / 14.29 lbs 6480 g / 63.6 N	38.88 kg / 85.71 lbs ~0 Gs
10 mm	23.91 kg / 52.72 lbs 6 228 Gs	3.59 kg / 7.91 lbs 3587 g / 35.2 N	21.52 kg / 47.44 lbs ~0 Gs
20 mm	6.89 kg / 15.19 lbs 3 343 Gs	1.03 kg / 2.28 lbs 1033 g / 10.1 N	6.20 kg / 13.67 lbs ~0 Gs
50 mm	0.32 kg / 0.71 lbs 721 Gs	0.05 kg / 0.11 lbs 48 g / 0.5 N	0.29 kg / 0.64 lbs ~0 Gs
60 mm	0.15 kg / 0.32 lbs 487 Gs	0.02 kg / 0.05 lbs 22 g / 0.2 N	0.13 kg / 0.29 lbs ~0 Gs
70 mm	0.07 kg / 0.16 lbs 344 Gs	0.01 kg / 0.02 lbs 11 g / 0.1 N	0.07 kg / 0.14 lbs ~0 Gs
80 mm	0.04 kg / 0.09 lbs 251 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
90 mm	0.02 kg / 0.05 lbs 189 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
100 mm	0.01 kg / 0.03 lbs 146 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs

Two magnetic products interact from a much further distance than a neodymium and metal combination. Such a system of two magnets creates a more powerful interaction and a further horizon of action. Want to build a powerful holder? Apply two magnets instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the collision energy is huge. The levitation is slightly lower than the attraction, but still large.
*Flux density in repulsion mode reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Important: Calculations refer to shear force of two matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MPL 20x20x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	14.0 cm
Hearing aid	10 Gs (1.0 mT)	11.0 cm
Mechanical watch	20 Gs (2.0 mT)	8.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.5 cm
Car key	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

A strong magnetic field is a real danger to electronic devices and medical implants. These NdFeB products generate a flux that prevents correct functioning of digital equipment. Remember: the unseen radiation acts through matter and housings. Increased vigilance must be exercised by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - warning
MPL 20x20x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.10 km/h (4.75 m/s)	0.68 J
30 mm	28.02 km/h (7.78 m/s)	1.82 J
50 mm	36.13 km/h (10.04 m/s)	3.02 J
100 mm	51.09 km/h (14.19 m/s)	6.04 J

NdFeB products are very brittle – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely speeds with massive force. Striking energy can cause material chips or injury to skin. Be sure to control the product during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Surface protection spec
MPL 20x20x20 / 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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MPL 20x20x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	22 017 Mx	220.2 µWb
P_c Coefficient	0.84	High (Stable)

Flux value passing through the magnet pole. Key data when building generators and motors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 20x20x20 / N38

Environment	Effective steel pull	Effect
Air (land)	15.40 kg	Standard
Water (riverbed)	17.63 kg (+2.23 kg buoyancy gain)	+14.5%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Caution: On a vertical surface, the magnet retains merely ~20% of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) drastically reduces the holding force.

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.84

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

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: 020129-2026

Quick Unit Converter

Force (pull)

Force in lbs

Magnetic Field

Gauss (Gs)

Induction (T)

Put a figure in a single field to generate results for the other units immediately.

Other deals

Product available Ships tomorrow

HH 25x7.7 [M5] / N38 - through hole magnetic holder

11.44 ZŁ brutto / pcs

Product available Ships tomorrow

MW 6x1 / N38 - cylindrical magnet

0.221 ZŁ brutto / pcs

Product available Ships tomorrow

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

35.99 ZŁ brutto / pcs

Product available Ships tomorrow

MW 33x30 / N38 - cylindrical magnet

52.89 ZŁ brutto / pcs

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 20x20x20 mm and a weight of 60 g, guarantees premium class connection. As a magnetic bar with high power (approx. 15.40 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 20x20x20 / 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 20x20x20 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for workshop organization 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. 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).

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.

This model is characterized by dimensions 20x20x20 mm, which, at a weight of 60 g, makes it an element with high energy density. It is a magnetic block with dimensions 20x20x20 mm and a self-weight of 60 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of Nd₂Fe₁₄B magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:

They retain magnetic properties for almost 10 years – the loss is just ~1% (based on simulations),
They do not lose their magnetic properties even under strong external field,
By applying a decorative layer of silver, the element has an aesthetic look,
Magnets exhibit extremely high magnetic induction on the surface,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
In view of the potential of free forming and customization to custom requirements, NdFeB magnets can be created in a variety of geometric configurations, which expands the range of possible applications,
Wide application in innovative solutions – they are utilized in data components, drive modules, medical devices, as well as other advanced devices.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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 very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
We recommend casing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complicated shapes.
Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these devices can be problematic in diagnostics medical in case of swallowing.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what affects it?

The force parameter is a measurement result performed under specific, ideal conditions:

with the application of a sheet made of low-carbon steel, guaranteeing maximum field concentration
whose transverse dimension is min. 10 mm
with an ground contact surface
under conditions of ideal adhesion (surface-to-surface)
during detachment in a direction perpendicular to the plane
at ambient temperature room level

Determinants of lifting force in real conditions

Real force impacted by specific conditions, mainly (from most important):

Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Direction of force – highest force is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Plate material – low-carbon steel attracts best. Alloy admixtures decrease magnetic permeability and holding force.
Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Thermal factor – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Warnings

Risk of cracking

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

Bodily injuries

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Impact on smartphones

Remember: rare earth magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and GPS.

Adults only

Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets may result in them attracting across intestines, which constitutes a severe health hazard and requires immediate surgery.

Maximum temperature

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. The loss of strength is permanent.

Fire warning

Powder generated during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Medical implants

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

Safe operation

Handle magnets with awareness. Their powerful strength can surprise even professionals. Plan your moves and do not underestimate their power.

Avoid contact if allergic

Studies show that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid direct skin contact or opt for encased magnets.

Cards and drives

Equipment safety: Strong magnets can damage payment cards and sensitive devices (heart implants, medical aids, timepieces).

Security! More info about risks in the article: Magnet Safety Guide.

MPL 20x20x20 / N38 - lamellar magnet

Technical details - MPL 20x20x20 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the product - data

Table 1: Static force (pull vs gap) - characteristics MPL 20x20x20 / N38

Table 2: Vertical force (vertical surface) MPL 20x20x20 / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 20x20x20 / N38

Table 4: Steel thickness (substrate influence) - power losses MPL 20x20x20 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MPL 20x20x20 / N38

Table 6: Two magnets (repulsion) - field range MPL 20x20x20 / N38

Table 7: Protective zones (implants) - precautionary measures MPL 20x20x20 / N38

Table 8: Dynamics (kinetic energy) - warning MPL 20x20x20 / N38

Table 9: Surface protection spec MPL 20x20x20 / N38

Table 10: Construction data (Pc) MPL 20x20x20 / N38

Table 11: Underwater work (magnet fishing) MPL 20x20x20 / N38

1. Shear force

2. Efficiency vs thickness

3. Power loss vs temp

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

Material specification

Environmental data

Force (pull)

Magnetic Field

Other deals

HH 25x7.7 [M5] / N38 - through hole magnetic holder

MW 6x1 / N38 - cylindrical magnet

UMH 42x9x46 [M6] / N38 - magnetic holder with hook

MW 33x30 / N38 - cylindrical magnet

Pros and cons of Nd2Fe14B magnets.

Strengths

Disadvantages

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what affects it?

Determinants of lifting force in real conditions

Warnings

Risk of cracking

Bodily injuries

Impact on smartphones

Adults only

Maximum temperature

Fire warning

Medical implants

Safe operation

Avoid contact if allergic

Cards and drives

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MPL 20x20x20 / N38

Table 2: Vertical force (vertical surface)
MPL 20x20x20 / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 20x20x20 / N38

Table 4: Steel thickness (substrate influence) - power losses
MPL 20x20x20 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 20x20x20 / N38

Table 6: Two magnets (repulsion) - field range
MPL 20x20x20 / N38

Table 7: Protective zones (implants) - precautionary measures
MPL 20x20x20 / N38

Table 8: Dynamics (kinetic energy) - warning
MPL 20x20x20 / N38

Table 9: Surface protection spec
MPL 20x20x20 / N38

Table 10: Construction data (P_c)
MPL 20x20x20 / N38

Table 11: Underwater work (magnet fishing)
MPL 20x20x20 / N38

Pros and cons of Nd₂Fe₁₄B magnets.