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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

check technical data »

0.1845 ZŁ with VAT / pcs + price for transport

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Technical data - 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 simulation of the product - data

Presented values constitute the direct effect of a mathematical calculation. Results were calculated on algorithms for the class Nd₂Fe₁₄B. Actual conditions might slightly differ from theoretical values. Please consider these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - 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	low risk
1 mm	2036 Gs 203.6 mT	0.28 kg / 279.6 g 2.7 N	low risk
2 mm	1228 Gs 122.8 mT	0.10 kg / 101.7 g 1.0 N	low risk
3 mm	727 Gs 72.7 mT	0.04 kg / 35.7 g 0.3 N	low risk
5 mm	285 Gs 28.5 mT	0.01 kg / 5.5 g 0.1 N	low risk
10 mm	54 Gs 5.4 mT	0.00 kg / 0.2 g 0.0 N	low risk
15 mm	18 Gs 1.8 mT	0.00 kg / 0.0 g 0.0 N	low risk
20 mm	8 Gs 0.8 mT	0.00 kg / 0.0 g 0.0 N	low risk
30 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	low risk
50 mm	1 Gs 0.1 mT	0.00 kg / 0.0 g 0.0 N	low risk

Grip strength drops drastically per each millimeter of distance. Remember that even a microscopic distance (e.g., dirt, varnish, rust) significantly weakens the grip. Magnets hold optimally in perfect adhesion; air break drastically cuts the power. Analyze how quickly the parameters plummet, when the magnet does not adhere tightly to the steel surface. When calculating the arrangement, eliminate redundant distances.

Table 2: Shear load (wall)
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 following data calculates the estimated force sufficient to cause the shifting of the magnet vertically along a vertical steel plate (considering standard friction). This value varies with the air gap between the magnet and the metal.

Table 3: 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	0.17 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 holder on a upright plane (e.g., a car body), it will only hold barely about 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient cause that products move down faster than they pull off. Planning a vertical fastening? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a noticeably lighter weight. Application of an anti-slip pad can effectively raise the stability.

Table 4: Steel thickness (saturation) - power losses
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 unable to conduct the entire magnetic field, which squanders power of the holder. Should you install a neodymium to a weak sheet, the field will pass right through and the attraction force will be weaker. To achieve the maximum of this magnet's power, you require a sufficiently solid backing of metal. The saturation phenomenon causes that on delicate walls (e.g., appliance housings), the holder holds weaker. We advise picking the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
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

Ordinary NdFeB products lose strength above the temperature limit. Avoid high temperatures – excessive heat can irreversibly destroy this product. With increasing heat, the magnet's power briefly decreases. Do not use this product close to ovens higher than its working range. Ignoring the limit will lead to destruction of magnetic properties.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than long magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - 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 magnetic products interact from a wider radius than a neodymium and metal combination. Such a system of two magnets generates a stronger field and a wider radius of performance. Designing a strong closure? Apply two magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the collision energy is massive. The levitation is slightly lower than the attraction, but still significant.
*The magnetic induction in repulsion mode is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).

Table 7: Protective zones (electronics) - 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
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 poses a real danger to IT equipment and medical implants. These magnets generate a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation passes through tissues and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
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

Neodymium magnets are delicate – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or painful pinches to fingers. Always hold the magnet during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Surface protection spec
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. Moisture resistance is crucial for installations in bathrooms or outdoors.

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 when building generators as well as sensors. P_c value defines the magnet's operating point.

Table 11: Submerged application
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%

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. 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)

*Note: On a vertical surface, the magnet holds just a fraction of its nominal pull.

2. Efficiency vs thickness

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

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

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

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

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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%

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: 020172-2025

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MPL 30x15x10 / N38 - lamellar magnet

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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 the highest quality connection. This rectangular block with a force of 5.68 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 0.58 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

They constitute a key element in the production of wind 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 hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 5x5x1.5 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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.

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (5x5 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

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 0.58 kg (force ~5.68 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of rare earth magnets.

Pros

In addition to their long-term stability, neodymium magnets provide the following advantages:

They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
Magnets very well resist against loss of magnetization caused by external fields,
In other words, due to the smooth layer of nickel, the element becomes visually attractive,
They feature high magnetic induction at the operating surface, making them more effective,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures approaching 230°C and above...
Possibility of custom forming and adjusting to complex needs,
Huge importance in innovative solutions – they find application in computer drives, electric drive systems, precision medical tools, also multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

Cons of neodymium magnets: weaknesses and usage proposals

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited possibility of making nuts in the magnet and complex forms - recommended is cover - magnetic holder.
Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small elements of these products are able to disrupt the diagnostic process medical in case of swallowing.
With budget limitations the cost of neodymium magnets can be a barrier,

Holding force characteristics

Magnetic strength at its maximum – what affects it?

The lifting capacity listed is a result of laboratory testing performed under specific, ideal conditions:

on a block made of structural steel, perfectly concentrating the magnetic flux
whose thickness is min. 10 mm
with an ideally smooth contact surface
with zero gap (without coatings)
for force applied at a right angle (in the magnet axis)
in neutral thermal conditions

Practical aspects of lifting capacity – factors

Real force is affected by working environment parameters, mainly (from priority):

Distance – the presence of any layer (paint, tape, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Material composition – not every steel attracts identically. High carbon content weaken the attraction effect.
Surface finish – full contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of neodymium magnets

No play value

Adult use only. Small elements pose a choking risk, leading to severe trauma. Keep away from kids and pets.

Fragile material

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets will cause them cracking into shards.

Magnetic interference

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

Do not underestimate power

Use magnets with awareness. Their immense force can shock even professionals. Stay alert and respect their power.

Life threat

Patients with a ICD must keep an safe separation from magnets. The magnetic field can stop the operation of the implant.

Nickel coating and allergies

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness appears, cease handling magnets and wear gloves.

Dust explosion hazard

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Data carriers

Device Safety: Strong magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

Crushing force

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

Operating temperature

Avoid heat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, look for HT versions (H, SH, UH).

Caution! Need more info? Check our post: Why are neodymium magnets dangerous?

MPL 5x5x1.5 / N38 - lamellar magnet

Technical data - MPL 5x5x1.5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - data

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

Table 2: Shear load (wall) MPL 5x5x1.5 / N38

Table 3: Wall mounting (sliding) - vertical pull MPL 5x5x1.5 / N38

Table 4: Steel thickness (saturation) - power losses MPL 5x5x1.5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MPL 5x5x1.5 / N38

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

Table 7: Protective zones (electronics) - warnings MPL 5x5x1.5 / N38

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

Table 9: Surface protection spec MPL 5x5x1.5 / N38

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

Table 11: Submerged application MPL 5x5x1.5 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Heat tolerance

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

Elemental analysis

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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MPL 30x15x10 / N38 - lamellar magnet

Pros as well as cons of rare earth magnets.

Pros

Limitations

Holding force characteristics

Magnetic strength at its maximum – what affects it?

Practical aspects of lifting capacity – factors

Safe handling of neodymium magnets

No play value

Fragile material

Magnetic interference

Do not underestimate power

Life threat

Nickel coating and allergies

Dust explosion hazard

Data carriers

Crushing force

Operating temperature

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Shear load (wall)
MPL 5x5x1.5 / N38

Table 3: Wall mounting (sliding) - vertical pull
MPL 5x5x1.5 / N38

Table 4: Steel thickness (saturation) - power losses
MPL 5x5x1.5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MPL 5x5x1.5 / N38

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

Table 7: Protective zones (electronics) - warnings
MPL 5x5x1.5 / N38

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

Table 9: Surface protection spec
MPL 5x5x1.5 / N38

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

Table 11: Submerged application
MPL 5x5x1.5 / N38