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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/EAN: 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

0.58 kg / 5.68 N

Magnetic Induction

293.49 mT / 2935 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/EAN	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 ~ ?	0.58 kg / 5.68 N
Magnetic Induction ~ ?	293.49 mT / 2935 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	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 magnet - report

These data are the result of a engineering analysis. Results are based on models for the class Nd₂Fe₁₄B. Actual conditions may deviate from the simulation results. Please consider these data as a reference point for designers.

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

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	2932 Gs 293.2 mT	0.58 kg / 580.0 g 5.7 N	weak grip
1 mm	2036 Gs 203.6 mT	0.28 kg / 279.6 g 2.7 N	weak grip
2 mm	1228 Gs 122.8 mT	0.10 kg / 101.7 g 1.0 N	weak grip
3 mm	727 Gs 72.7 mT	0.04 kg / 35.7 g 0.3 N	weak grip
5 mm	285 Gs 28.5 mT	0.01 kg / 5.5 g 0.1 N	weak grip
10 mm	54 Gs 5.4 mT	0.00 kg / 0.2 g 0.0 N	weak grip
15 mm	18 Gs 1.8 mT	0.00 kg / 0.0 g 0.0 N	weak grip
20 mm	8 Gs 0.8 mT	0.00 kg / 0.0 g 0.0 N	weak grip
30 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	weak grip
50 mm	1 Gs 0.1 mT	0.00 kg / 0.0 g 0.0 N	weak grip

Pulling power weakens drastically per each millimeter of gap. Remember that even a microscopic distance (e.g., dirt, paint, rust) noticeably weakens the grip. Magnetic products operate optimally at the point of direct contact; air break drastically cuts the force. See how quickly the pull force plummet, when the product does not touch directly to the steel surface. When designing the assembly, avoid unnecessary gaps.

Table 2: Vertical load (vertical surface)
MPL 5x5x1.5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.12 kg / 116.0 g 1.1 N
1 mm	Stal (~0.2)	0.06 kg / 56.0 g 0.5 N
2 mm	Stal (~0.2)	0.02 kg / 20.0 g 0.2 N
3 mm	Stal (~0.2)	0.01 kg / 8.0 g 0.1 N
5 mm	Stal (~0.2)	0.00 kg / 2.0 g 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.0 g 0.0 N

The table below presents the estimated holding capacity needed to cause the slippage of the magnet down on a upright steel plate (considering standard friction coefficient). This value is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 5x5x1.5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.17 kg / 174.0 g 1.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.12 kg / 116.0 g 1.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.06 kg / 58.0 g 0.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.29 kg / 290.0 g 2.8 N

When placing a magnet on a vertical wall (e.g., a board), it you can count on only approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip cause that products slip easier than they detach. Planning a hanger? Note that the shear force is noticeably lower than the maximum static pull force. On a slippery surface, the element will give way down under a noticeably lighter weight. Using a rubber pad can drastically improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 5x5x1.5 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.06 kg / 58.0 g 0.6 N
1 mm	25%	0.15 kg / 145.0 g 1.4 N
2 mm	50%	0.29 kg / 290.0 g 2.8 N
5 mm	100%	0.58 kg / 580.0 g 5.7 N
10 mm	100%	0.58 kg / 580.0 g 5.7 N

A too thin steel is incapable of absorb the entire magnetic field, which wastes potential of the holder. Should you attach a powerful product to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To utilize 100% of this neodymium's power, you need a suitably thick element of steel. The saturation effect causes that on sheet metal structures (e.g., thin profiles), the product holds weaker. We advise picking the steel thickness from these parameters.

Table 5: Working in heat (stability) - resistance threshold
MPL 5x5x1.5 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	0.58 kg / 580.0 g 5.7 N	OK
40 °C	-2.2%	0.57 kg / 567.2 g 5.6 N	OK
60 °C	-4.4%	0.55 kg / 554.5 g 5.4 N
80 °C	-6.6%	0.54 kg / 541.7 g 5.3 N
100 °C	-28.8%	0.41 kg / 413.0 g 4.1 N

Classic neodymiums lose power past the thermal threshold. Avoid high temperatures – heat can irreversibly destroy this product. With every degree above norm, the neodymium's force briefly decreases. Avoid using this product close to ovens exceeding its working range. Too high temperature will lead to irreversible degradation of magnetism.

*Important note: Thermal stability is determined by both grade, as well as the dimension ratios. Flat magnets (low Pc) may lose charge permanently sooner than long magnets. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - field collision
MPL 5x5x1.5 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	1.33 kg / 1325 g 13.0 N 4 518 Gs	N/A
1 mm	0.97 kg / 974 g 9.6 N 5 027 Gs	0.88 kg / 876 g 8.6 N ~0 Gs
2 mm	0.64 kg / 639 g 6.3 N 4 071 Gs	0.57 kg / 575 g 5.6 N ~0 Gs
3 mm	0.39 kg / 392 g 3.8 N 3 188 Gs	0.35 kg / 352 g 3.5 N ~0 Gs
5 mm	0.14 kg / 137 g 1.3 N 1 886 Gs	0.12 kg / 123 g 1.2 N ~0 Gs
10 mm	0.01 kg / 12 g 0.1 N 569 Gs	0.01 kg / 11 g 0.1 N ~0 Gs
20 mm	0.00 kg / 0 g 0.0 N 108 Gs	0.00 kg / 0 g 0.0 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 9 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a magnet and sheet setup. Such a system of magnet-to-magnet generates a stronger field and a larger range of action. Designing a powerful holder? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still significant.
*Flux density between like poles reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).

Table 7: Safety (HSE) (electronics) - precautionary measures
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
Mechanical watch	20 Gs (2.0 mT)	1.5 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Remote	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

Extremely neodym field is a serious hazard to IT equipment and medical implants. These NdFeB products generate a field that destroys function of digital equipment. Remember: the invisible magnetic field passes through tissues and glass. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MPL 5x5x1.5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	45.91 km/h (12.75 m/s)	0.02 J
30 mm	79.50 km/h (22.08 m/s)	0.07 J
50 mm	102.64 km/h (28.51 m/s)	0.11 J
100 mm	145.15 km/h (40.32 m/s)	0.23 J

Magnetic elements are delicate – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or dangerous crushing to skin. Be sure to control the product during installation so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when handling with large magnets.

Table 9: 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MPL 5x5x1.5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	799 Mx	8.0 µWb
P_c Coefficient	0.36	Low (Flat)

Total magnetic flux emitted by the pole surface. Essential parameter in coil applications as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 5x5x1.5 / N38

Environment	Effective steel pull	Effect
Air (land)	0.58 kg	Standard
Water (riverbed)	0.66 kg (+0.08 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. Buoyancy helps in lifting finds.

1. Sliding resistance

*Warning: On a vertical surface, the magnet holds just ~20% of its max power.

2. Steel saturation

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.36

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

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%

Sustainability

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: 020172-2025

Measurement Calculator

Magnet pull force

Kilograms (kg)

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

Tesla (T)

Input data in a box, and the remaining fields convert in real-time.

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 5x5x1.5 mm and a weight of 0.28 g, guarantees premium class connection. This rectangular block with a force of 5.68 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.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. 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 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 generators and material handling systems. Thanks to the flat surface and high force (approx. 0.58 kg), they are ideal as closers in furniture making and mounting elements in automation. 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. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. 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. This is the most popular configuration for block magnets used in separators and holders.

The presented product is a neodymium magnet with precisely defined parameters: 5 mm (length), 5 mm (width), and 1.5 mm (thickness). The key parameter here is the holding force amounting to approximately 0.58 kg (force ~5.68 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of rare earth magnets.

Pros

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

Their power is maintained, and after approximately ten years it decreases only by ~1% (according to research),
They show high resistance to demagnetization induced by external magnetic fields,
The use of an refined coating of noble metals (nickel, gold, silver) causes the element to look better,
They are known for high magnetic induction at the operating surface, which improves attraction properties,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of precise forming and optimizing to defined requirements,
Huge importance in high-tech industry – they are commonly used in mass storage devices, electric drive systems, medical equipment, also technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Limited ability of making threads in the magnet and complicated forms - recommended is casing - magnet mounting.
Health risk related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these devices can be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Breakaway force was determined for the most favorable conditions, including:

with the application of a yoke made of special test steel, guaranteeing maximum field concentration
with a cross-section of at least 10 mm
characterized by smoothness
under conditions of no distance (metal-to-metal)
under vertical force direction (90-degree angle)
at temperature room level

Determinants of practical lifting force of a magnet

Effective lifting capacity impacted by working environment parameters, such as (from priority):

Distance – existence of any layer (rust, tape, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
Base massiveness – too thin plate does not accept the full field, causing part of the power to be lost into the air.
Material type – ideal substrate is pure iron steel. Hardened steels may have worse magnetic properties.
Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.

Warnings

ICD Warning

Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Safe distance

Very strong magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

Permanent damage

Monitor thermal conditions. Heating the magnet to high heat will ruin its properties and strength.

Magnets are brittle

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets will cause them cracking into shards.

This is not a toy

NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.

Safe operation

Handle with care. Rare earth magnets attract from a long distance and snap with huge force, often faster than you can react.

Fire warning

Mechanical processing of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Magnetic interference

Remember: neodymium magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Warning for allergy sufferers

Some people experience a sensitization to Ni, which is the standard coating for neodymium magnets. Extended handling may cause dermatitis. It is best to wear protective gloves.

Physical harm

Large magnets can crush fingers in a fraction of a second. Under no circumstances place your hand between two attracting surfaces.

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

MPL 5x5x1.5 / N38 - lamellar magnet

Not sure about your choice?

MPL 5x5x1.5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the magnet - report

1. Sliding resistance

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Sustainability

Magnet pull force

Magnetic Induction

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MW 8x3 / N38 - cylindrical magnet

UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

MW 3x6 / N38 - cylindrical magnet

Strengths and weaknesses of rare earth magnets.

Pros

Cons

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Determinants of practical lifting force of a magnet

ICD Warning

Safe distance

Permanent damage

Magnets are brittle

This is not a toy

Safe operation

Fire warning

Magnetic interference

Warning for allergy sufferers

Physical harm

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C