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MPL 5x5x1.5 / 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: 1-6500
Rating: 5

lamellar magnet

Catalog no 020172

GTIN: 5906301811787

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1.5 mm [±0,1 mm]

Weight

0.28 g

Magnetization Direction

↑ axial

Load capacity

1.05 kg / 10.34 N

Magnetic Induction

0.40 mT / 4 Gs

Coating

[NiCuNi] Nickel

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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MPL 5x5x1.5 / N38 - lamellar magnet

Specification / characteristics MPL 5x5x1.5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020172
GTIN	5906301811787
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	5 mm [±0,1 mm]
Width	5 mm [±0,1 mm]
Height	1.5 mm [±0,1 mm]
Weight	0.28 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.05 kg / 10.34 N
Magnetic Induction ~ ?	0.40 mT / 4 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1.5 / N38 - lamellar magnet

properties	values	units
remenance Br [Min. - Max.] ?	12.2-12.6	kGs
remenance Br [Min. - Max.] ?	1220-1260	T
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 106	°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 analysis of the magnet - technical parameters

These information represent the direct effect of a engineering simulation. Values rely on models for the class NdFeB. Actual parameters may differ. Treat these data as a reference point for designers.

Table 1: Static force (pull vs distance) - characteristics
MPL 5x5x1.5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	3958 Gs 395.8 mT	1.05 kg / 1050.0 g 10.3 N	safe
1 mm	2748 Gs 274.8 mT	0.51 kg / 506.1 g 5.0 N	safe
2 mm	1658 Gs 165.8 mT	0.18 kg / 184.2 g 1.8 N	safe
5 mm	285 Gs 28.5 mT	0.01 kg / 5.4 g 0.1 N	safe
10 mm	54 Gs 5.4 mT	0.00 kg / 0.2 g 0.0 N	safe
15 mm	18 Gs 1.8 mT	0.00 kg / 0.0 g 0.0 N	safe
20 mm	8 Gs 0.8 mT	0.00 kg / 0.0 g 0.0 N	safe
30 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.0 g 0.0 N	safe

Grip strength weakens sharply per each millimeter of distance. Note that even a microscopic distance (e.g., contamination, varnish, rust) noticeably diminishes the holding power. Neodymiums hold strongest during direct contact; gap nullifies the force. Notice how rapidly the load capacity fall, when the product does not touch tightly to the steel surface. When planning the assembly, discard additional spacers.

Siła Zsuwania (Ściana)
MPL 5x5x1.5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)

Siła potrzebna do przesunięcia magnesu w dół po pionowej ścianie stalowej przy szczelinie powietrznej.

Table 2: Wall mounting (sliding) - vertical pull
MPL 5x5x1.5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.32 kg / 315.0 g 3.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.21 kg / 210.0 g 2.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.11 kg / 105.0 g 1.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.53 kg / 525.0 g 5.2 N

When hanging a holder on a upright surface (e.g., a board), it will maintain barely approx. 20%-30% of its maximum pull force. Gravity as well as a low friction coefficient mean that magnets move down easier than they detach. Planning a hanger? Remember that the shear force is noticeably lower than the maximum static pull force. On a slippery surface, the magnet will give way down under a noticeably lighter cargo. Utilizing a rubberized layer can significantly increase the grip.

Table 3: Material efficiency (saturation) - power losses
MPL 5x5x1.5 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.11 kg / 105.0 g 1.0 N
1 mm	25%	0.26 kg / 262.5 g 2.6 N
2 mm	50%	0.53 kg / 525.0 g 5.2 N
5 mm	100%	1.05 kg / 1050.0 g 10.3 N
10 mm	100%	1.05 kg / 1050.0 g 10.3 N

A thin metal plate is unable to focus the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this neodymium's potential, you require a sufficiently solid piece of steel. The saturation phenomenon causes that on delicate walls (e.g., appliance housings), the product works worse. We recommend selecting the steel dimension from these parameters.

Table 4: Thermal resistance (stability) - resistance threshold
MPL 5x5x1.5 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	1.05 kg / 1050.0 g 10.3 N	OK
40 °C	-2.2%	1.03 kg / 1026.9 g 10.1 N	OK
60 °C	-4.4%	1.00 kg / 1003.8 g 9.8 N	OK
80 °C	-6.6%	0.98 kg / 980.7 g 9.6 N
100 °C	-28.8%	0.75 kg / 747.6 g 7.3 N

Standard neodymium magnets irreversibly lose parameters above the temperature limit. Watch out for overheating – high temperature can permanently damage this magnet. With increasing heat, the magnet's force temporarily decreases. Avoid using this magnet near heat sources higher than its operating temperature limit. Too high temperature will result in irreversible degradation of magnetic properties.

Table 5: Magnet-Magnet interaction (attraction) - field range
MPL 5x5x1.5 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	1.58 kg / 1575.0 g 15.5 N	N/A
2 mm	0.27 kg / 270.0 g 2.6 N	0.25 kg / 252.0 g 2.5 N
5 mm	0.02 kg / 15.0 g 0.1 N	0.01 kg / 14.0 g 0.1 N
10 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N
20 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N
50 mm	0.00 kg / 0.0 g 0.0 N	0.00 kg / 0.0 g 0.0 N

Two magnetic products attract each other from a significantly greater distance than a magnet and steel combination. The connection of two magnets creates a more powerful interaction and a larger range of performance. Planning to create a powerful holder? Apply two 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 attraction, but still significant.

Table 6: Safety (HSE) (implants) - warnings
MPL 5x5x1.5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	2.5 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Timepiece	20 Gs (2.0 mT)	1.5 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Car key	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

A strong magnetic field is a real danger to IT equipment and medical implants. These neodymiums produce a flux that destroys function of digital equipment. Notice: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, speakers, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 7: Collisions (kinetic energy) - collision effects
MPL 5x5x1.5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	61.77 km/h (17.16 m/s)	0.04 J
30 mm	106.97 km/h (29.71 m/s)	0.12 J
50 mm	138.10 km/h (38.36 m/s)	0.21 J
100 mm	195.30 km/h (54.25 m/s)	0.41 J

Magnetic elements are delicate – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose turns into a projectile. Striking energy can cause material chips or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Wear eye protection when handling with powerful specimens.

Table 8: Anti-corrosion coating durability
MPL 5x5x1.5 / 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. Note the thickness of the protective layer.

Table 9: Submerged application
MPL 5x5x1.5 / N38

Environment	Effective steel pull	Effect
Air (land)	1.05 kg	Standard
Water (riverbed)	1.20 kg (+0.15 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

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Component MPL 5x5x1.5 / N38 features a low profile and industrial pulling force, making it an ideal solution for building separators and machines. This magnetic block with a force of 10.34 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 5x5x1.5 / 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 5x5x1.5 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 1.05 kg), they are ideal as hidden locks 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. 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 5x5x1.5 / N38 model is magnetized axially (dimension 1.5 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 5x5x1.5 mm, which, at a weight of 0.28 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 1.05 kg (force ~10.34 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of neodymium magnets.

Besides their exceptional strength, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
They are extremely resistant to demagnetization induced by external field influence,
The use of an refined finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Neodymium magnets create maximum magnetic induction on a small area, which ensures high operational effectiveness,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
Thanks to freedom in forming and the ability to modify to specific needs,
Wide application in innovative solutions – they serve a role in magnetic memories, electric drive systems, diagnostic systems, also other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Drawbacks and weaknesses of neodymium magnets: application proposals

To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
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 and 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
They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing nuts and complicated forms in magnets, we recommend using a housing - magnetic mount.
Health risk related to microscopic parts of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Holding force of 1.05 kg is a theoretical maximum value performed under standard conditions:

using a plate made of low-carbon steel, serving as a circuit closing element
with a cross-section of at least 10 mm
with a plane cleaned and smooth
with zero gap (no paint)
for force acting at a right angle (pull-off, not shear)
in temp. approx. 20°C

Magnet lifting force in use – key factors

Bear in mind that the application force may be lower influenced by the following factors, in order of importance:

Space between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Base massiveness – insufficiently thick plate does not close the flux, causing part of the power to be escaped into the air.
Material type – the best choice is pure iron steel. Hardened steels may attract less.
Smoothness – full contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

* Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a minimal clearance {between} the magnet and the plate decreases the holding force.

Safe handling of neodymium magnets

Sensitization to coating

Certain individuals have a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Extended handling might lead to an allergic reaction. We recommend wear protective gloves.

Keep away from children

Always store magnets out of reach of children. Choking hazard is high, and the consequences of magnets clamping inside the body are life-threatening.

Keep away from computers

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

Handling guide

Exercise caution. Rare earth magnets attract from a long distance and snap with huge force, often quicker than you can move away.

Pacemakers

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

Operating temperature

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

Fragile material

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

Pinching danger

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

Combustion hazard

Drilling and cutting of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

GPS and phone interference

Remember: neodymium magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your mobile, device, and navigation systems.

Warning!

Need more info? Check our post: Are neodymium magnets dangerous?

MPL 5x5x1.5 / N38 - lamellar magnet

MPL 5x5x1.5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - technical parameters

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MW 16x9 / N38 - cylindrical magnet

Advantages as well as disadvantages of neodymium magnets.

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Magnet lifting force in use – key factors

Safe handling of neodymium magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C