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MPL 10x7x3 / 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 020115

GTIN/EAN: 5906301811213

5.00

length

10 mm [±0,1 mm]

Width

7 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.58 g

Magnetization Direction

↑ axial

Load capacity

2.02 kg / 19.82 N

Magnetic Induction

339.79 mT / 3398 Gs

Coating

[NiCuNi] Nickel

check technical data »

0.849 ZŁ with VAT / pcs + price for transport

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Technical of the product - MPL 10x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 10x7x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020115
GTIN/EAN	5906301811213
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	10 mm [±0,1 mm]
Width	7 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	1.58 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.02 kg / 19.82 N
Magnetic Induction ~ ?	339.79 mT / 3398 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 10x7x3 / 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 magnet - technical parameters

The following data are the outcome of a mathematical analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Real-world conditions might slightly differ from theoretical values. Use these calculations as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - power drop
MPL 10x7x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	3396 Gs 339.6 mT	2.02 kg / 2020.0 g 19.8 N	medium risk
1 mm	2727 Gs 272.7 mT	1.30 kg / 1303.2 g 12.8 N	safe
2 mm	2053 Gs 205.3 mT	0.74 kg / 738.2 g 7.2 N	safe
3 mm	1502 Gs 150.2 mT	0.40 kg / 395.2 g 3.9 N	safe
5 mm	803 Gs 80.3 mT	0.11 kg / 113.0 g 1.1 N	safe
10 mm	216 Gs 21.6 mT	0.01 kg / 8.2 g 0.1 N	safe
15 mm	82 Gs 8.2 mT	0.00 kg / 1.2 g 0.0 N	safe
20 mm	39 Gs 3.9 mT	0.00 kg / 0.3 g 0.0 N	safe
30 mm	13 Gs 1.3 mT	0.00 kg / 0.0 g 0.0 N	safe
50 mm	3 Gs 0.3 mT	0.00 kg / 0.0 g 0.0 N	safe

Grip strength decreases sharply with every subsequent millimeter of distance. Remember that even a microscopic distance (e.g., dirt, varnish, rust) strongly weakens the grip. Magnets operate optimally at the point of direct contact; distance nullifies the force. See how rapidly the pull force drop, when the magnet does not touch directly to the metal substrate. When designing the arrangement, discard additional spacers.

Table 2: Vertical hold (wall)
MPL 10x7x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	0.40 kg / 404.0 g 4.0 N
1 mm	Stal (~0.2)	0.26 kg / 260.0 g 2.6 N
2 mm	Stal (~0.2)	0.15 kg / 148.0 g 1.5 N
3 mm	Stal (~0.2)	0.08 kg / 80.0 g 0.8 N
5 mm	Stal (~0.2)	0.02 kg / 22.0 g 0.2 N
10 mm	Stal (~0.2)	0.00 kg / 2.0 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

This section indicates the estimated shear load sufficient to initiate the slippage of the magnet down against a upright steel plate (considering typical friction). This value is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 10x7x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.61 kg / 606.0 g 5.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.40 kg / 404.0 g 4.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.20 kg / 202.0 g 2.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.01 kg / 1010.0 g 9.9 N

When hanging a holder on a upright wall (e.g., a fridge), it will only hold only approx. 20%-30% of its maximum pull force. Gravity and a low friction coefficient influence the fact that magnets slip faster than they detach. Want to create a hanger? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a noticeably lighter cargo. Application of an anti-slip pad can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MPL 10x7x3 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	10%	0.20 kg / 202.0 g 2.0 N
1 mm	25%	0.51 kg / 505.0 g 5.0 N
2 mm	50%	1.01 kg / 1010.0 g 9.9 N
5 mm	100%	2.02 kg / 2020.0 g 19.8 N
10 mm	100%	2.02 kg / 2020.0 g 19.8 N

A thin sheet is unable to focus the full magnetic flux, which squanders power of the magnet. If you install a neodymium to a thin surface, the field will pass right through and the holding will be smaller. To squeeze full efficiency of this neodymium's power, you require a sufficiently solid backing of steel. The saturation phenomenon causes that on sheet metal structures (e.g., thin profiles), the magnet works worse. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 10x7x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	2.02 kg / 2020.0 g 19.8 N	OK
40 °C	-2.2%	1.98 kg / 1975.6 g 19.4 N	OK
60 °C	-4.4%	1.93 kg / 1931.1 g 18.9 N
80 °C	-6.6%	1.89 kg / 1886.7 g 18.5 N
100 °C	-28.8%	1.44 kg / 1438.2 g 14.1 N

Classic neodymiums change their properties strength after exceeding the maximum temperature. Watch out for overheating – excessive heat can permanently demagnetize this magnet. With every degree above norm, the magnet's force briefly drops. Do not use this magnet close to ovens exceeding its safe range. Ignoring the limit will cause permanent loss of magnetism.

*Technical advisory: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (pancake types) risk losing magnetic properties under lower heat stress compared to rod magnets. Red status in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MPL 10x7x3 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	4.98 kg / 4976 g 48.8 N 4 893 Gs	N/A
1 mm	4.09 kg / 4088 g 40.1 N 6 155 Gs	3.68 kg / 3679 g 36.1 N ~0 Gs
2 mm	3.21 kg / 3210 g 31.5 N 5 455 Gs	2.89 kg / 2889 g 28.3 N ~0 Gs
3 mm	2.44 kg / 2443 g 24.0 N 4 758 Gs	2.20 kg / 2199 g 21.6 N ~0 Gs
5 mm	1.34 kg / 1335 g 13.1 N 3 518 Gs	1.20 kg / 1202 g 11.8 N ~0 Gs
10 mm	0.28 kg / 278 g 2.7 N 1 606 Gs	0.25 kg / 250 g 2.5 N ~0 Gs
20 mm	0.02 kg / 20 g 0.2 N 433 Gs	0.02 kg / 18 g 0.2 N ~0 Gs
50 mm	0.00 kg / 0 g 0.0 N 43 Gs	0.00 kg / 0 g 0.0 N ~0 Gs

Two magnetic products interact from a much further distance than a magnet and sheet combination. The connection of two magnets produces a massive flux and a wider radius of action. Designing a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the pinch force is massive. The levitation is a bit weaker than the attraction, but still large.
*Field value for N-N configuration drops to ~0 Gs in the exact middle of the gap (resulting from vector opposition).

Table 7: Protective zones (electronics) - precautionary measures
MPL 10x7x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.5 cm
Hearing aid	10 Gs (1.0 mT)	3.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.0 cm
Mobile device	40 Gs (4.0 mT)	2.0 cm
Remote	50 Gs (5.0 mT)	2.0 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 serious hazard to electronic devices as well as pacemakers. These neodymiums produce a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and glass. Special caution must be taken by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MPL 10x7x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	36.15 km/h (10.04 m/s)	0.08 J
30 mm	62.46 km/h (17.35 m/s)	0.24 J
50 mm	80.63 km/h (22.40 m/s)	0.40 J
100 mm	114.03 km/h (31.68 m/s)	0.79 J

NdFeB products are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Corrosion resistance
MPL 10x7x3 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MPL 10x7x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 480 Mx	24.8 µWb
P_c Coefficient	0.42	Low (Flat)

Total magnetic flux emitted by the pole surface. Essential parameter when building generators and motors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 10x7x3 / N38

Environment	Effective steel pull	Effect
Air (land)	2.02 kg	Standard
Water (riverbed)	2.31 kg (+0.29 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!

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Note: On a vertical wall, the magnet retains only a fraction of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.

3. Power loss vs temp

*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) = 0.42

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: 020115-2025

Measurement Calculator

Pulling force

Force in kg

Newtons (N)

Force in lbs

Field Strength

Gauss (Gs)

Tesla (T)

Input a value in a box, and the remaining fields will update on the fly.

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Component MPL 10x7x3 / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. As a magnetic bar with high power (approx. 2.02 kg), this product is available immediately from our warehouse in Poland. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

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 10x7x3 / 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. They work great as fasteners under tiles, wood, or glass. 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 roughen and wash 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. 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 10x7x3 mm, which, at a weight of 1.58 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 2.02 kg (force ~19.82 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of rare earth magnets.

Strengths

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

Their strength is maintained, and after around ten years it drops only by ~1% (according to research),
Magnets effectively resist against loss of magnetization caused by foreign field sources,
Thanks to the metallic finish, the plating of Ni-Cu-Ni, gold, or silver-plated gives an elegant appearance,
The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures reaching 230°C and above...
Thanks to versatility in designing and the ability to adapt to unusual requirements,
Wide application in advanced technology sectors – they find application in mass storage devices, motor assemblies, medical equipment, also industrial machines.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Drawbacks and weaknesses of neodymium magnets: tips and applications.

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Limited ability of producing nuts in the magnet and complicated forms - preferred is a housing - mounting mechanism.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these magnets can disrupt the diagnostic process medical when they are in the body.
Due to complex production process, their price exceeds standard values,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what affects it?

Holding force of 2.02 kg is a measurement result conducted under the following configuration:

with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
whose transverse dimension reaches at least 10 mm
characterized by lack of roughness
under conditions of gap-free contact (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
at room temperature

Practical lifting capacity: influencing factors

In real-world applications, the actual holding force results from many variables, ranked from the most important:

Air gap (between the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or debris).
Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Material composition – different alloys reacts the same. Alloy additives worsen the attraction effect.
Plate texture – ground elements guarantee perfect abutment, which improves force. Rough surfaces weaken the grip.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate reduces the load capacity.

Precautions when working with neodymium magnets

Magnets are brittle

Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.

Protect data

Device Safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Immense force

Handle with care. Rare earth magnets act from a long distance and snap with huge force, often quicker than you can move away.

Operating temperature

Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. This process is irreversible.

GPS Danger

Navigation devices and mobile phones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Swallowing risk

Absolutely store magnets away from children. Choking hazard is significant, and the effects of magnets clamping inside the body are very dangerous.

Health Danger

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Do not drill into magnets

Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Nickel coating and allergies

A percentage of the population experience a hypersensitivity to Ni, which is the typical protective layer for neodymium magnets. Frequent touching might lead to dermatitis. We recommend wear protective gloves.

Crushing risk

Big blocks can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.

Caution! Learn more about risks in the article: Safety of working with magnets.

MPL 10x7x3 / N38 - lamellar magnet

Technical of the product - MPL 10x7x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - technical parameters

Table 1: Static pull force (force vs gap) - power drop MPL 10x7x3 / N38

Table 2: Vertical hold (wall) MPL 10x7x3 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 10x7x3 / N38

Table 4: Material efficiency (substrate influence) - power losses MPL 10x7x3 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MPL 10x7x3 / N38

Table 6: Two magnets (repulsion) - forces in the system MPL 10x7x3 / N38

Table 7: Protective zones (electronics) - precautionary measures MPL 10x7x3 / N38

Table 8: Dynamics (kinetic energy) - collision effects MPL 10x7x3 / N38

Table 9: Corrosion resistance MPL 10x7x3 / N38

Table 10: Construction data (Flux) MPL 10x7x3 / N38

Table 11: Hydrostatics and buoyancy MPL 10x7x3 / N38

1. Shear force

2. Steel thickness impact

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Field Strength

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Advantages and disadvantages of rare earth magnets.

Strengths

Cons

Holding force characteristics

Detachment force of the magnet in optimal conditions – what affects it?

Practical lifting capacity: influencing factors

Precautions when working with neodymium magnets

Magnets are brittle

Protect data

Immense force

Operating temperature

GPS Danger

Swallowing risk

Health Danger

Do not drill into magnets

Nickel coating and allergies

Crushing risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - power drop
MPL 10x7x3 / N38

Table 2: Vertical hold (wall)
MPL 10x7x3 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 10x7x3 / N38

Table 4: Material efficiency (substrate influence) - power losses
MPL 10x7x3 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 10x7x3 / N38

Table 6: Two magnets (repulsion) - forces in the system
MPL 10x7x3 / N38

Table 7: Protective zones (electronics) - precautionary measures
MPL 10x7x3 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MPL 10x7x3 / N38

Table 9: Corrosion resistance
MPL 10x7x3 / N38

Table 10: Construction data (Flux)
MPL 10x7x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 10x7x3 / N38