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

Product available Ships in 3 days

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

product parameters »

15.07 ZŁ with VAT / pcs + price for transport

12.25 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

12.25 ZŁ

15.07 ZŁ

price from 50 pcs

11.51 ZŁ

14.16 ZŁ

price from 210 pcs

10.78 ZŁ

13.26 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Pick up the phone and ask +48 22 499 98 98 or send us a note via form the contact form page.
Force as well as appearance of magnets can be estimated on our force calculator.

Same-day shipping for orders placed before 14:00.

Technical parameters of the product - 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 modeling of the assembly - data

Presented values are the outcome of a mathematical simulation. Values are based on models for the material Nd₂Fe₁₄B. Actual conditions may differ from theoretical values. Treat these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
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 pounds 11350.0 g / 111.3 N	critical level
1 mm	2306 Gs 230.6 mT	9.73 kg / 21.45 pounds 9731.3 g / 95.5 N	medium risk
2 mm	2095 Gs 209.5 mT	8.03 kg / 17.70 pounds 8028.8 g / 78.8 N	medium risk
3 mm	1877 Gs 187.7 mT	6.45 kg / 14.21 pounds 6445.4 g / 63.2 N	medium risk
5 mm	1472 Gs 147.2 mT	3.97 kg / 8.74 pounds 3965.1 g / 38.9 N	medium risk
10 mm	792 Gs 79.2 mT	1.15 kg / 2.53 pounds 1147.1 g / 11.3 N	weak grip
15 mm	454 Gs 45.4 mT	0.38 kg / 0.83 pounds 376.9 g / 3.7 N	weak grip
20 mm	278 Gs 27.8 mT	0.14 kg / 0.31 pounds 141.4 g / 1.4 N	weak grip
30 mm	122 Gs 12.2 mT	0.03 kg / 0.06 pounds 27.0 g / 0.3 N	weak grip
50 mm	35 Gs 3.5 mT	0.00 kg / 0.01 pounds 2.3 g / 0.0 N	weak grip

Magnetic force drops drastically with every subsequent millimeter of distance. Note that even the smallest gap (e.g., contamination, paint, rust) significantly weakens the grip. Neodymiums operate most effectively during direct contact; gap kills the force. Observe how flashily the pull force drop, when the product does not adhere tightly to the metal substrate. When planning the assembly, discard additional spacers.

Table 2: Vertical force (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 pounds 2270.0 g / 22.3 N
1 mm	Stal (~0.2)	1.95 kg / 4.29 pounds 1946.0 g / 19.1 N
2 mm	Stal (~0.2)	1.61 kg / 3.54 pounds 1606.0 g / 15.8 N
3 mm	Stal (~0.2)	1.29 kg / 2.84 pounds 1290.0 g / 12.7 N
5 mm	Stal (~0.2)	0.79 kg / 1.75 pounds 794.0 g / 7.8 N
10 mm	Stal (~0.2)	0.23 kg / 0.51 pounds 230.0 g / 2.3 N
15 mm	Stal (~0.2)	0.08 kg / 0.17 pounds 76.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section calculates the approximate shear load required to initiate the shifting of the magnet downwards along a vertical steel plate (assuming standard friction). This value varies with the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - 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 pounds 3405.0 g / 33.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.27 kg / 5.00 pounds 2270.0 g / 22.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.14 kg / 2.50 pounds 1135.0 g / 11.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.68 kg / 12.51 pounds 5675.0 g / 55.7 N

When mounting a element on a upright surface (e.g., a car body), it you can count on barely about 1/5 of its maximum pull force. Gravity and a low friction coefficient mean that holders move down easier than they pop off the substrate. Planning a wall mount? Remember that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the element will give way down under a much lighter weight. Application of an anti-slip pad can significantly improve the result.

Table 4: Material efficiency (saturation) - power losses
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 pounds 567.5 g / 5.6 N
1 mm	13%	1.42 kg / 3.13 pounds 1418.8 g / 13.9 N
2 mm	25%	2.84 kg / 6.26 pounds 2837.5 g / 27.8 N
3 mm	38%	4.26 kg / 9.38 pounds 4256.3 g / 41.8 N
5 mm	63%	7.09 kg / 15.64 pounds 7093.8 g / 69.6 N
10 mm	100%	11.35 kg / 25.02 pounds 11350.0 g / 111.3 N
11 mm	100%	11.35 kg / 25.02 pounds 11350.0 g / 111.3 N
12 mm	100%	11.35 kg / 25.02 pounds 11350.0 g / 111.3 N

A thin sheet cannot conduct the entire magnetic field, which wastes potential of the magnet. If you attach a powerful product to a too thin substrate, the flux will pass right through and the pull force will drop sharply. To utilize the maximum of this neodymium's power, you require a sufficiently solid piece of steel. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the holder shows lower pull force. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal stability (stability) - thermal limit
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 pounds 11350.0 g / 111.3 N	OK
40 °C	-2.2%	11.10 kg / 24.47 pounds 11100.3 g / 108.9 N	OK
60 °C	-4.4%	10.85 kg / 23.92 pounds 10850.6 g / 106.4 N
80 °C	-6.6%	10.60 kg / 23.37 pounds 10600.9 g / 104.0 N
100 °C	-28.8%	8.08 kg / 17.82 pounds 8081.2 g / 79.3 N

Ordinary NdFeB products irreversibly lose parameters above the temperature limit. Avoid high temperatures – high temperature can irreversibly demagnetize this product. With every degree above norm, the neodymium's power briefly decreases. Avoid using this product close to heaters exceeding its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetism.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently under lower heat stress than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MPL 40x15x5x2[7/3.5] / N38

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

Two strong neodymiums attract each other from a significantly greater distance than a magnet and sheet setup. The setup of two magnets produces a massive flux and a wider radius of action. Designing a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the pinch force is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*Field value for N-N configuration drops to ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Important: Estimates demonstrate friction force of dual same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - 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

Powerful magnet radiation is a serious hazard to electronic devices and medical implants. These NdFeB products generate a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field penetrates the body and housings. Increased vigilance must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
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

Magnetic elements are prone to chipping – a collision with steel causes immediate chipping. Control the attraction moment – a neodymium left loose speeds with massive force. Striking energy can destroy the magnet or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Corrosion resistance
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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical 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)

Flux value passing through the magnet pole. Essential parameter for generator designers and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Submerged application
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%

Rust risk: 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. Wall mount (shear)

*Warning: On a vertical wall, the magnet holds just ~20% of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) drastically 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) = 0.26

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

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

Pulling force

lbs

Field Strength

Induction (Gs)

Tesla (T)

Put a figure in a single slot to see the conversion in all other units immediately.

Other deals

Product available Ships in 3 days

UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

400.00 ZŁ brutto / pcs

Product available Ships in 3 days

MW 12x6 / N38 - cylindrical magnet

1.882 ZŁ brutto / pcs

Product available Ships in 3 days

MPL 30x10x5 / N38 - lamellar magnet

4.26 ZŁ brutto / pcs

Product available Ships in 3 days

MPL 45x25x10 / N38 - lamellar magnet

35.01 ZŁ brutto / pcs

Model MPL 40x15x5x2[7/3.5] / N38 features a low profile and professional pulling force, making it an ideal solution for building separators and machines. This magnetic block with a force of 111.37 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, 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 11.35 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 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 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. 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: 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.

Pros and cons of Nd₂Fe₁₄B magnets.

Advantages

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

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
They do not lose their magnetic properties even under strong external field,
By covering with a reflective coating of silver, the element presents an aesthetic look,
Magnetic induction on the working part of the magnet remains maximum,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Possibility of detailed creating and optimizing to individual applications,
Fundamental importance in modern industrial fields – they are utilized in computer drives, electric drive systems, diagnostic systems, also industrial machines.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in small systems

Cons

Problematic aspects of neodymium magnets: weaknesses and usage proposals

At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
Limited possibility of making nuts in the magnet and complicated shapes - preferred is cover - magnetic holder.
Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these devices can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what affects it?

Breakaway force was determined for ideal contact conditions, taking into account:

using a sheet made of mild steel, functioning as a circuit closing element
possessing a thickness of min. 10 mm to avoid saturation
characterized by even structure
without the slightest insulating layer between the magnet and steel
for force acting at a right angle (in the magnet axis)
in stable room temperature

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual lifting capacity depends on several key aspects, listed from crucial:

Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Load vector – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures decrease magnetic permeability and lifting capacity.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets

Sensitization to coating

Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and opt for versions in plastic housing.

Bodily injuries

Protect your hands. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Medical interference

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Power loss in heat

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

Immense force

Be careful. Rare earth magnets attract from a distance and connect with huge force, often faster than you can react.

Beware of splinters

Despite the nickel coating, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Danger to the youngest

Always store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are tragic.

Compass and GPS

GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Combustion hazard

Dust generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Cards and drives

Data protection: Neodymium magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, mechanical watches).

Important! Details about risks in the article: Magnet Safety Guide.

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

Technical parameters of the product - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - data

Table 1: Static pull force (pull vs gap) - characteristics MPL 40x15x5x2[7/3.5] / N38

Table 2: Vertical force (wall) MPL 40x15x5x2[7/3.5] / N38

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

Table 4: Material efficiency (saturation) - power losses MPL 40x15x5x2[7/3.5] / N38

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

Table 6: Two magnets (attraction) - forces in the system MPL 40x15x5x2[7/3.5] / N38

Table 7: Protective zones (electronics) - warnings MPL 40x15x5x2[7/3.5] / N38

Table 8: Dynamics (cracking risk) - collision effects MPL 40x15x5x2[7/3.5] / N38

Table 9: Corrosion resistance MPL 40x15x5x2[7/3.5] / N38

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

Table 11: Submerged application MPL 40x15x5x2[7/3.5] / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Temperature resistance

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

Material specification

Sustainability

Pulling force

Field Strength

Other deals

UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

MW 12x6 / N38 - cylindrical magnet

MPL 30x10x5 / N38 - lamellar magnet

MPL 45x25x10 / N38 - lamellar magnet

Pros and cons of Nd2Fe14B magnets.

Advantages

Cons

Pull force analysis

Maximum lifting force for a neodymium magnet – what affects it?

Impact of factors on magnetic holding capacity in practice

Safety rules for work with NdFeB magnets

Sensitization to coating

Bodily injuries

Medical interference

Power loss in heat

Immense force

Beware of splinters

Danger to the youngest

Compass and GPS

Combustion hazard

Cards and drives

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MPL 40x15x5x2[7/3.5] / N38

Table 2: Vertical force (wall)
MPL 40x15x5x2[7/3.5] / N38

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

Table 4: Material efficiency (saturation) - power losses
MPL 40x15x5x2[7/3.5] / N38

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

Table 6: Two magnets (attraction) - forces in the system
MPL 40x15x5x2[7/3.5] / N38

Table 7: Protective zones (electronics) - warnings
MPL 40x15x5x2[7/3.5] / N38

Table 8: Dynamics (cracking risk) - collision effects
MPL 40x15x5x2[7/3.5] / N38

Table 9: Corrosion resistance
MPL 40x15x5x2[7/3.5] / N38

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

Table 11: Submerged application
MPL 40x15x5x2[7/3.5] / N38

Pros and cons of Nd₂Fe₁₄B magnets.