MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Product available Ships tomorrow

MPL 40x15x5x2[7/3.5] / 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: PLN 1-6500
Rating: 5

lamellar magnet

Catalog no 020154

GTIN/EAN: 5906301811602

5.00

length

40 mm [±0,1 mm]

Width

15 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

22.5 g

Magnetization Direction

↑ axial

Load capacity

11.35 kg / 111.37 N

Magnetic Induction

249.11 mT / 2491 Gs

Coating

[NiCuNi] Nickel

technical details »

15.07 ZŁ with VAT / pcs + price for transport

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Detailed specification - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

properties

properties	values
Cat. no.	020154
GTIN/EAN	5906301811602
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	40 mm [±0,1 mm]
Width	15 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	22.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	11.35 kg / 111.37 N
Magnetic Induction ~ ?	249.11 mT / 2491 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x15x5x2[7/3.5] / 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

Physical analysis of the assembly - report

Presented data constitute the outcome of a mathematical analysis. Values rely on algorithms for the class Nd₂Fe₁₄B. Real-world parameters may differ from theoretical values. Treat these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
MPL 40x15x5x2[7/3.5] / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2490 Gs 249.0 mT	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N	critical level
1 mm	2306 Gs 230.6 mT	9.73 kg / 21.45 lbs 9731.3 g / 95.5 N	strong
2 mm	2095 Gs 209.5 mT	8.03 kg / 17.70 lbs 8028.8 g / 78.8 N	strong
3 mm	1877 Gs 187.7 mT	6.45 kg / 14.21 lbs 6445.4 g / 63.2 N	strong
5 mm	1472 Gs 147.2 mT	3.97 kg / 8.74 lbs 3965.1 g / 38.9 N	strong
10 mm	792 Gs 79.2 mT	1.15 kg / 2.53 lbs 1147.1 g / 11.3 N	low risk
15 mm	454 Gs 45.4 mT	0.38 kg / 0.83 lbs 376.9 g / 3.7 N	low risk
20 mm	278 Gs 27.8 mT	0.14 kg / 0.31 lbs 141.4 g / 1.4 N	low risk
30 mm	122 Gs 12.2 mT	0.03 kg / 0.06 lbs 27.0 g / 0.3 N	low risk
50 mm	35 Gs 3.5 mT	0.00 kg / 0.01 lbs 2.3 g / 0.0 N	low risk

Grip strength weakens sharply with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., contamination, varnish, rust) noticeably weakens the grip. Magnets operate strongest in perfect adhesion; gap kills the power. Notice how quickly the load capacity plummet, when the magnet does not touch tightly to the steel surface. When designing the mounting, avoid additional spacers.

Table 2: Sliding load (wall)
MPL 40x15x5x2[7/3.5] / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.27 kg / 5.00 lbs 2270.0 g / 22.3 N
1 mm	Stal (~0.2)	1.95 kg / 4.29 lbs 1946.0 g / 19.1 N
2 mm	Stal (~0.2)	1.61 kg / 3.54 lbs 1606.0 g / 15.8 N
3 mm	Stal (~0.2)	1.29 kg / 2.84 lbs 1290.0 g / 12.7 N
5 mm	Stal (~0.2)	0.79 kg / 1.75 lbs 794.0 g / 7.8 N
10 mm	Stal (~0.2)	0.23 kg / 0.51 lbs 230.0 g / 2.3 N
15 mm	Stal (~0.2)	0.08 kg / 0.17 lbs 76.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 28.0 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 indicates the theoretical holding capacity needed to cause the sliding of the magnet downwards on a upright steel plate (assuming standard friction coefficient). This parameter varies with the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.41 kg / 7.51 lbs 3405.0 g / 33.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.27 kg / 5.00 lbs 2270.0 g / 22.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.14 kg / 2.50 lbs 1135.0 g / 11.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.68 kg / 12.51 lbs 5675.0 g / 55.7 N

When placing a holder on a vertical plane (e.g., a fridge), it you can count on only about 1/5 of nominal attraction strength. Gravity and a weak degree of grip influence the fact that products slip easier than they pull off. Want to create a hanger? Note that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the element will slide down under a significantly smaller load. Application of an anti-slip layer can drastically increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x15x5x2[7/3.5] / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.57 kg / 1.25 lbs 567.5 g / 5.6 N
1 mm	13%	1.42 kg / 3.13 lbs 1418.8 g / 13.9 N
2 mm	25%	2.84 kg / 6.26 lbs 2837.5 g / 27.8 N
3 mm	38%	4.26 kg / 9.38 lbs 4256.3 g / 41.8 N
5 mm	63%	7.09 kg / 15.64 lbs 7093.8 g / 69.6 N
10 mm	100%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N
11 mm	100%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N
12 mm	100%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N

A thin metal plate is not enough to conduct the entire magnetic field, which weakens actual performance of the magnet. Should you attach a powerful product to a too thin substrate, the flux will pass right through and the holding will be smaller. To achieve full efficiency of this magnet's potential, you need a suitably thick backing of metal. The saturation effect causes that on delicate walls (e.g., thin profiles), the holder holds weaker. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x15x5x2[7/3.5] / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N	OK
40 °C	-2.2%	11.10 kg / 24.47 lbs 11100.3 g / 108.9 N	OK
60 °C	-4.4%	10.85 kg / 23.92 lbs 10850.6 g / 106.4 N
80 °C	-6.6%	10.60 kg / 23.37 lbs 10600.9 g / 104.0 N
100 °C	-28.8%	8.08 kg / 17.82 lbs 8081.2 g / 79.3 N

Classic neodymiums change their properties strength after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly demagnetize this product. As the temperature rises, the neodymium's force momentarily drops. Refrain from using this product near heat sources exceeding its safe range. Too high temperature will result in irreversible degradation of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) may lose charge permanently sooner compared to rod magnets. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field collision
MPL 40x15x5x2[7/3.5] / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	22.94 kg / 50.58 lbs 3 961 Gs	3.44 kg / 7.59 lbs 3441 g / 33.8 N	N/A
1 mm	21.37 kg / 47.11 lbs 4 807 Gs	3.21 kg / 7.07 lbs 3205 g / 31.4 N	19.23 kg / 42.40 lbs ~0 Gs
2 mm	19.67 kg / 43.37 lbs 4 612 Gs	2.95 kg / 6.50 lbs 2951 g / 28.9 N	17.70 kg / 39.03 lbs ~0 Gs
3 mm	17.94 kg / 39.55 lbs 4 404 Gs	2.69 kg / 5.93 lbs 2691 g / 26.4 N	16.15 kg / 35.59 lbs ~0 Gs
5 mm	14.58 kg / 32.15 lbs 3 971 Gs	2.19 kg / 4.82 lbs 2187 g / 21.5 N	13.12 kg / 28.93 lbs ~0 Gs
10 mm	8.01 kg / 17.67 lbs 2 944 Gs	1.20 kg / 2.65 lbs 1202 g / 11.8 N	7.21 kg / 15.90 lbs ~0 Gs
20 mm	2.32 kg / 5.11 lbs 1 583 Gs	0.35 kg / 0.77 lbs 348 g / 3.4 N	2.09 kg / 4.60 lbs ~0 Gs
50 mm	0.12 kg / 0.26 lbs 359 Gs	0.02 kg / 0.04 lbs 18 g / 0.2 N	0.11 kg / 0.24 lbs ~0 Gs
60 mm	0.05 kg / 0.12 lbs 243 Gs	0.01 kg / 0.02 lbs 8 g / 0.1 N	0.05 kg / 0.11 lbs ~0 Gs
70 mm	0.03 kg / 0.06 lbs 171 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs
80 mm	0.01 kg / 0.03 lbs 124 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs
90 mm	0.01 kg / 0.02 lbs 92 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 70 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets attract each other from a much further distance than a magnet and steel combination. The connection of magnet-to-magnet creates a more powerful interaction and a wider radius of action. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the collision energy is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Flux density in repulsion mode is approximately ~0 Gs at the geometric center of the gap (due to field cancellation).
Important: Estimates demonstrate sliding force of dual same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MPL 40x15x5x2[7/3.5] / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.5 cm
Hearing aid	10 Gs (1.0 mT)	8.0 cm
Mechanical watch	20 Gs (2.0 mT)	6.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.0 cm
Remote	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field poses a serious hazard to IT equipment and pacemakers. These NdFeB products produce a field that disrupts operation of sensitive medical devices. Remember: the unseen radiation passes through tissues and plastic. Special caution must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
MPL 40x15x5x2[7/3.5] / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.04 km/h (6.68 m/s)	0.50 J
30 mm	39.29 km/h (10.91 m/s)	1.34 J
50 mm	50.66 km/h (14.07 m/s)	2.23 J
100 mm	71.63 km/h (19.90 m/s)	4.45 J

NdFeB products are very brittle – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely 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 contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Use safety goggles when playing with large magnets.

Table 9: Coating parameters (durability)
MPL 40x15x5x2[7/3.5] / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MPL 40x15x5x2[7/3.5] / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	14 969 Mx	149.7 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 40x15x5x2[7/3.5] / N38

Environment	Effective steel pull	Effect
Air (land)	11.35 kg	Standard
Water (riverbed)	13.00 kg (+1.65 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Note: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.26

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%

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: 020154-2026

Measurement Calculator

Magnet pull force

Force in kg

Pounds (lbs)

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Induction (Gs)

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This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x15x5 mm and a weight of 22.5 g, guarantees premium class connection. As a magnetic bar with high power (approx. 11.35 kg), this product is available immediately from our warehouse in Poland. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

Separating strong flat 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 11.35 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 40x15x5x2[7/3.5] / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 11.35 kg), they are ideal as closers 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 40x15x5x2[7/3.5] / N38 model is magnetized through the thickness (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (40x15 mm), which is ideal for flat mounting. 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: 40 mm (length), 15 mm (width), and 5 mm (thickness). It is a magnetic block with dimensions 40x15x5 mm and a self-weight of 22.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of neodymium magnets.

Benefits

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

Their strength is maintained, and after approximately 10 years it drops only by ~1% (theoretically),
They are extremely resistant to demagnetization induced by external disturbances,
The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to present itself better,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Possibility of individual machining and adjusting to concrete conditions,
Significant place in innovative solutions – they are utilized in magnetic memories, motor assemblies, diagnostic systems, as well as industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
Due to limitations in realizing nuts and complicated forms in magnets, we propose using casing - magnetic mechanism.
Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Additionally, small components of these magnets are able to complicate diagnosis medical in case of swallowing.
Due to complex production process, their price is relatively high,

Holding force characteristics

Maximum magnetic pulling force – what affects it?

The load parameter shown refers to the limit force, measured under optimal environment, meaning:

on a plate made of mild steel, perfectly concentrating the magnetic field
with a thickness no less than 10 mm
characterized by even structure
without any air gap between the magnet and steel
during pulling in a direction vertical to the plane
at ambient temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Real force impacted by working environment parameters, such as (from priority):

Distance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
Plate material – low-carbon steel gives the best results. Alloy admixtures decrease magnetic permeability and holding force.
Surface condition – smooth surfaces ensure maximum contact, which improves force. Rough surfaces weaken the grip.
Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, however under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Safe handling of NdFeB magnets

GPS and phone interference

A powerful magnetic field negatively affects the operation of compasses in smartphones and navigation systems. Maintain magnets close to a device to prevent damaging the sensors.

Demagnetization risk

Do not overheat. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

This is not a toy

Neodymium magnets are not toys. Swallowing several magnets can lead to them attracting across intestines, which poses a critical condition and requires immediate surgery.

Shattering risk

NdFeB magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets leads to them cracking into shards.

Caution required

Be careful. Neodymium magnets act from a distance and connect with huge force, often quicker than you can react.

Serious injuries

Large magnets can smash fingers instantly. Never place your hand between two strong magnets.

Allergic reactions

It is widely known that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and opt for versions in plastic housing.

Safe distance

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

Warning for heart patients

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

Flammability

Machining of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Important! Need more info? Read our article: Why are neodymium magnets dangerous?

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Detailed specification - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - report

Table 1: Static pull force (force vs distance) - interaction chart MPL 40x15x5x2[7/3.5] / N38

Table 2: Sliding load (wall) MPL 40x15x5x2[7/3.5] / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x15x5x2[7/3.5] / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 40x15x5x2[7/3.5] / N38

Table 5: Thermal stability (stability) - resistance threshold MPL 40x15x5x2[7/3.5] / N38

Table 6: Two magnets (repulsion) - field collision MPL 40x15x5x2[7/3.5] / N38

Table 7: Safety (HSE) (implants) - warnings MPL 40x15x5x2[7/3.5] / N38

Table 8: Impact energy (kinetic energy) - warning MPL 40x15x5x2[7/3.5] / N38

Table 9: Coating parameters (durability) MPL 40x15x5x2[7/3.5] / N38

Table 10: Construction data (Pc) MPL 40x15x5x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing) MPL 40x15x5x2[7/3.5] / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Heat tolerance

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

Material specification

Sustainability

Magnet pull force

Field Strength

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Advantages and disadvantages of neodymium magnets.

Benefits

Disadvantages

Holding force characteristics

Maximum magnetic pulling force – what affects it?

Determinants of lifting force in real conditions

Safe handling of NdFeB magnets

GPS and phone interference

Demagnetization risk

This is not a toy

Shattering risk

Caution required

Serious injuries

Allergic reactions

Safe distance

Warning for heart patients

Flammability

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - interaction chart
MPL 40x15x5x2[7/3.5] / N38

Table 2: Sliding load (wall)
MPL 40x15x5x2[7/3.5] / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x15x5x2[7/3.5] / N38

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x15x5x2[7/3.5] / N38

Table 6: Two magnets (repulsion) - field collision
MPL 40x15x5x2[7/3.5] / N38

Table 7: Safety (HSE) (implants) - warnings
MPL 40x15x5x2[7/3.5] / N38

Table 8: Impact energy (kinetic energy) - warning
MPL 40x15x5x2[7/3.5] / N38

Table 9: Coating parameters (durability)
MPL 40x15x5x2[7/3.5] / N38

Table 10: Construction data (P_c)
MPL 40x15x5x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing)
MPL 40x15x5x2[7/3.5] / N38