Product available Ships today (order by 14:00)

MPL 50x50x10 / 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 020167

GTIN/EAN: 5906301811732

5.00

length

50 mm [±0,1 mm]

Width

50 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

187.5 g

Magnetization Direction

↑ axial

Load capacity

33.73 kg / 330.92 N

Magnetic Induction

209.75 mT / 2097 Gs

Coating

[NiCuNi] Nickel

product details »

42.88 ZŁ with VAT / pcs + price for transport

34.86 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

34.86 ZŁ

42.88 ZŁ

price from 20 pcs

32.77 ZŁ

40.31 ZŁ

price from 80 pcs

30.68 ZŁ

37.73 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Contact us by phone +48 888 99 98 98 alternatively drop us a message by means of form the contact page.
Specifications and structure of magnets can be calculated with our force calculator.

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

Technical - MPL 50x50x10 / N38 - lamellar magnet

Specification / characteristics - MPL 50x50x10 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020167
GTIN/EAN	5906301811732
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	50 mm [±0,1 mm]
Width	50 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	187.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	33.73 kg / 330.92 N
Magnetic Induction ~ ?	209.75 mT / 2097 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 50x50x10 / 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 simulation of the magnet - technical parameters

The following values constitute the direct effect of a physical calculation. Values rely on algorithms for the class Nd₂Fe₁₄B. Operational performance might slightly deviate from the simulation results. Please consider these data as a reference point when designing systems.

Table 1: Static force (force vs gap) - characteristics
MPL 50x50x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2097 Gs 209.7 mT	33.73 kg / 74.36 lbs 33730.0 g / 330.9 N	dangerous!
1 mm	2056 Gs 205.6 mT	32.43 kg / 71.50 lbs 32430.0 g / 318.1 N	dangerous!
2 mm	2009 Gs 200.9 mT	30.96 kg / 68.27 lbs 30964.6 g / 303.8 N	dangerous!
3 mm	1957 Gs 195.7 mT	29.38 kg / 64.77 lbs 29380.4 g / 288.2 N	dangerous!
5 mm	1841 Gs 184.1 mT	25.99 kg / 57.30 lbs 25992.3 g / 255.0 N	dangerous!
10 mm	1514 Gs 151.4 mT	17.58 kg / 38.75 lbs 17577.6 g / 172.4 N	dangerous!
15 mm	1194 Gs 119.4 mT	10.93 kg / 24.10 lbs 10931.8 g / 107.2 N	dangerous!
20 mm	922 Gs 92.2 mT	6.51 kg / 14.36 lbs 6512.2 g / 63.9 N	strong
30 mm	543 Gs 54.3 mT	2.26 kg / 4.98 lbs 2260.0 g / 22.2 N	strong
50 mm	209 Gs 20.9 mT	0.33 kg / 0.74 lbs 334.1 g / 3.3 N	low risk

Magnetic force weakens drastically per each millimeter of distance. Remember that even the smallest gap (e.g., dirt, varnish, dust) strongly diminishes the holding power. Neodymiums operate strongest in perfect adhesion; gap nullifies the force. See how flashily the pull force plummet, when the magnet does not touch directly to the steel surface. When calculating the mounting, discard redundant distances.

Table 2: Sliding hold (wall)
MPL 50x50x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	6.75 kg / 14.87 lbs 6746.0 g / 66.2 N
1 mm	Stal (~0.2)	6.49 kg / 14.30 lbs 6486.0 g / 63.6 N
2 mm	Stal (~0.2)	6.19 kg / 13.65 lbs 6192.0 g / 60.7 N
3 mm	Stal (~0.2)	5.88 kg / 12.95 lbs 5876.0 g / 57.6 N
5 mm	Stal (~0.2)	5.20 kg / 11.46 lbs 5198.0 g / 51.0 N
10 mm	Stal (~0.2)	3.52 kg / 7.75 lbs 3516.0 g / 34.5 N
15 mm	Stal (~0.2)	2.19 kg / 4.82 lbs 2186.0 g / 21.4 N
20 mm	Stal (~0.2)	1.30 kg / 2.87 lbs 1302.0 g / 12.8 N
30 mm	Stal (~0.2)	0.45 kg / 1.00 lbs 452.0 g / 4.4 N
50 mm	Stal (~0.2)	0.07 kg / 0.15 lbs 66.0 g / 0.6 N

The table below presents the theoretical holding capacity necessary to start the downward movement of the magnet downwards on a upright steel wall (considering standard friction coefficient). This value depends on the distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 50x50x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	10.12 kg / 22.31 lbs 10119.0 g / 99.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	6.75 kg / 14.87 lbs 6746.0 g / 66.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	3.37 kg / 7.44 lbs 3373.0 g / 33.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	16.87 kg / 37.18 lbs 16865.0 g / 165.4 N

When placing a magnet on a upright wall (e.g., a fridge), it you can count on barely about 20%-30% of nominal attraction strength. Gravity and a low friction coefficient mean that magnets move down faster than they pull off. Planning a hanger? Note that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the magnet will slide down under a significantly smaller load. Using a rubber coating can significantly improve the result.

Table 4: Material efficiency (saturation) - power losses
MPL 50x50x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.69 kg / 3.72 lbs 1686.5 g / 16.5 N
1 mm	13%	4.22 kg / 9.30 lbs 4216.3 g / 41.4 N
2 mm	25%	8.43 kg / 18.59 lbs 8432.5 g / 82.7 N
3 mm	38%	12.65 kg / 27.89 lbs 12648.8 g / 124.1 N
5 mm	63%	21.08 kg / 46.48 lbs 21081.2 g / 206.8 N
10 mm	100%	33.73 kg / 74.36 lbs 33730.0 g / 330.9 N
11 mm	100%	33.73 kg / 74.36 lbs 33730.0 g / 330.9 N
12 mm	100%	33.73 kg / 74.36 lbs 33730.0 g / 330.9 N

A too thin steel is incapable of conduct the entire magnetic field, which squanders power of the magnet. If you attach a powerful product to a thin surface, the flux will penetrate right through and the pull force will drop sharply. To achieve full efficiency of this magnet's power, you require a sufficiently solid element of metal. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the product shows lower pull force. We recommend selecting the steel thickness based on the following data.

Table 5: Working in heat (stability) - power drop
MPL 50x50x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	33.73 kg / 74.36 lbs 33730.0 g / 330.9 N	OK
40 °C	-2.2%	32.99 kg / 72.73 lbs 32987.9 g / 323.6 N	OK
60 °C	-4.4%	32.25 kg / 71.09 lbs 32245.9 g / 316.3 N
80 °C	-6.6%	31.50 kg / 69.45 lbs 31503.8 g / 309.1 N
100 °C	-28.8%	24.02 kg / 52.95 lbs 24015.8 g / 235.6 N

Classic neodymiums irreversibly lose strength above the temperature limit. Protect against heat – high temperature can irreversibly demagnetize this magnet. As the temperature rises, the magnet's power momentarily decreases. Avoid using this product close to heaters exceeding its working range. Exceeding the critical threshold will cause permanent loss of magnetism.

*Technical advisory: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Flat magnets (pancake types) risk losing magnetic properties under lower heat stress than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field collision
MPL 50x50x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	67.80 kg / 149.46 lbs 3 611 Gs	10.17 kg / 22.42 lbs 10169 g / 99.8 N	N/A
1 mm	66.54 kg / 146.70 lbs 4 156 Gs	9.98 kg / 22.01 lbs 9982 g / 97.9 N	59.89 kg / 132.03 lbs ~0 Gs
2 mm	65.18 kg / 143.70 lbs 4 113 Gs	9.78 kg / 21.56 lbs 9777 g / 95.9 N	58.66 kg / 129.33 lbs ~0 Gs
3 mm	63.74 kg / 140.53 lbs 4 067 Gs	9.56 kg / 21.08 lbs 9562 g / 93.8 N	57.37 kg / 126.48 lbs ~0 Gs
5 mm	60.67 kg / 133.75 lbs 3 968 Gs	9.10 kg / 20.06 lbs 9101 g / 89.3 N	54.60 kg / 120.38 lbs ~0 Gs
10 mm	52.24 kg / 115.18 lbs 3 682 Gs	7.84 kg / 17.28 lbs 7836 g / 76.9 N	47.02 kg / 103.66 lbs ~0 Gs
20 mm	35.33 kg / 77.89 lbs 3 028 Gs	5.30 kg / 11.68 lbs 5299 g / 52.0 N	31.80 kg / 70.10 lbs ~0 Gs
50 mm	7.69 kg / 16.96 lbs 1 413 Gs	1.15 kg / 2.54 lbs 1154 g / 11.3 N	6.92 kg / 15.26 lbs ~0 Gs
60 mm	4.54 kg / 10.01 lbs 1 086 Gs	0.68 kg / 1.50 lbs 681 g / 6.7 N	4.09 kg / 9.01 lbs ~0 Gs
70 mm	2.72 kg / 6.01 lbs 841 Gs	0.41 kg / 0.90 lbs 409 g / 4.0 N	2.45 kg / 5.41 lbs ~0 Gs
80 mm	1.67 kg / 3.68 lbs 658 Gs	0.25 kg / 0.55 lbs 250 g / 2.5 N	1.50 kg / 3.31 lbs ~0 Gs
90 mm	1.05 kg / 2.31 lbs 521 Gs	0.16 kg / 0.35 lbs 157 g / 1.5 N	0.94 kg / 2.08 lbs ~0 Gs
100 mm	0.67 kg / 1.48 lbs 417 Gs	0.10 kg / 0.22 lbs 101 g / 1.0 N	0.60 kg / 1.33 lbs ~0 Gs

Two magnets interact from a much further distance than a magnet and sheet combination. Such a system of two magnets creates a more powerful interaction and a larger range of performance. Planning to create a strong closure? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the pinch force is massive. The levitation is marginally weaker than the connection force, but still significant.
*The magnetic induction between like poles drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Important: Figures refer to friction force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - warnings
MPL 50x50x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	21.0 cm
Hearing aid	10 Gs (1.0 mT)	16.5 cm
Timepiece	20 Gs (2.0 mT)	13.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	10.0 cm
Remote	50 Gs (5.0 mT)	9.5 cm
Payment card	400 Gs (40.0 mT)	4.0 cm
HDD hard drive	600 Gs (60.0 mT)	3.0 cm

Extremely neodym field is a real danger to IT equipment and medical implants. These magnets produce a field that prevents correct functioning of digital equipment. Notice: the invisible magnetic field penetrates the body and glass. Special caution must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MPL 50x50x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.38 km/h (4.83 m/s)	2.19 J
30 mm	24.39 km/h (6.78 m/s)	4.30 J
50 mm	30.43 km/h (8.45 m/s)	6.70 J
100 mm	42.78 km/h (11.88 m/s)	13.24 J

Neodymium magnets are very brittle – a strong collision with metal can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can destroy the magnet or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Corrosion resistance
MPL 50x50x10 / 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: Electrical data (P_c)
MPL 50x50x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	61 501 Mx	615.0 µWb
P_c Coefficient	0.26	Low (Flat)

Flux value emitted by the magnet pole. Key data in coil applications as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 50x50x10 / N38

Environment	Effective steel pull	Effect
Air (land)	33.73 kg	Standard
Water (riverbed)	38.62 kg (+4.89 kg buoyancy gain)	+14.5%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

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

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet retains just approx. 20-30% of its max power.

2. Efficiency vs thickness

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

3. Power loss vs temp

*For N38 grade, the safety 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

Chemical composition

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%

Environmental data

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: 020167-2026

Quick Unit Converter

Pulling force

Force in kg

Newtons (N)

lbs

Magnetic Field

Tesla (T)

Just complete a single box, and the tool compute everything else for you.

Other proposals

Product available Ships today (order by 14:00)

SM 25x275 [2xM8] / N52 - magnetic separator

836.40 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 40x5x3 / N38 - lamellar magnet

6.65 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMH 36x8x46 [M6] / N38 - magnetic holder with hook

26.64 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 12x1 / N38 - cylindrical magnet

0.578 ZŁ brutto / pcs

Component MPL 50x50x10 / N38 features a flat shape and industrial pulling force, making it an ideal solution for building separators and machines. As a magnetic bar with high power (approx. 33.73 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 50x50x10 / 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.

Plate magnets MPL 50x50x10 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 33.73 kg), they are ideal as hidden locks 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. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (50x50 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 50x50x10 mm, which, at a weight of 187.5 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 50x50x10 mm and a self-weight of 187.5 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of neodymium magnets.

Pros

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

They do not lose strength, even over nearly 10 years – the decrease in power is only ~1% (theoretically),
Neodymium magnets remain highly resistant to loss of magnetic properties caused by external field sources,
A magnet with a metallic silver surface looks better,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to freedom in forming and the ability to adapt to complex applications,
Versatile presence in high-tech industry – they serve a role in hard drives, brushless drives, diagnostic systems, and technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in small systems

Cons

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing threads and complicated forms in magnets, we recommend using casing - magnetic holder.
Health risk resulting from small fragments of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Magnetic strength at its maximum – what affects it?

Holding force of 33.73 kg is a theoretical maximum value conducted under the following configuration:

on a block made of structural steel, optimally conducting the magnetic flux
with a thickness of at least 10 mm
characterized by lack of roughness
under conditions of ideal adhesion (surface-to-surface)
under perpendicular force direction (90-degree angle)
at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

It is worth knowing that the application force may be lower subject to the following factors, starting with the most relevant:

Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Hardened steels may attract less.
Smoothness – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Caution required

Exercise caution. Neodymium magnets attract from a distance and connect with huge force, often quicker than you can react.

Danger to pacemakers

Health Alert: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Material brittleness

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them cracking into small pieces.

Heat sensitivity

Regular neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Magnetic interference

An intense magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.

Dust is flammable

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Skin irritation risks

It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or select versions in plastic housing.

Serious injuries

Large magnets can crush fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Protect data

Very strong magnetic fields can erase data on credit cards, HDDs, and storage devices. Keep a distance of at least 10 cm.

No play value

Absolutely store magnets out of reach of children. Choking hazard is high, and the consequences of magnets clamping inside the body are life-threatening.

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

MPL 50x50x10 / N38 - lamellar magnet

Technical - MPL 50x50x10 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - technical parameters

Table 1: Static force (force vs gap) - characteristics MPL 50x50x10 / N38

Table 2: Sliding hold (wall) MPL 50x50x10 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 50x50x10 / N38

Table 4: Material efficiency (saturation) - power losses MPL 50x50x10 / N38

Table 5: Working in heat (stability) - power drop MPL 50x50x10 / N38

Table 6: Two magnets (repulsion) - field collision MPL 50x50x10 / N38

Table 7: Hazards (implants) - warnings MPL 50x50x10 / N38

Table 8: Dynamics (cracking risk) - collision effects MPL 50x50x10 / N38

Table 9: Corrosion resistance MPL 50x50x10 / N38

Table 10: Electrical data (Pc) MPL 50x50x10 / N38

Table 11: Physics of underwater searching MPL 50x50x10 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Power loss vs temp

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

Chemical composition

Environmental data

Pulling force

Magnetic Field

Other proposals

SM 25x275 [2xM8] / N52 - magnetic separator

MPL 40x5x3 / N38 - lamellar magnet

UMH 36x8x46 [M6] / N38 - magnetic holder with hook

MW 12x1 / N38 - cylindrical magnet

Pros and cons of neodymium magnets.

Pros

Cons

Pull force analysis

Magnetic strength at its maximum – what affects it?

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Caution required

Danger to pacemakers

Material brittleness

Heat sensitivity

Magnetic interference

Dust is flammable

Skin irritation risks

Serious injuries

Protect data

No play value

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - characteristics
MPL 50x50x10 / N38

Table 2: Sliding hold (wall)
MPL 50x50x10 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 50x50x10 / N38

Table 4: Material efficiency (saturation) - power losses
MPL 50x50x10 / N38

Table 5: Working in heat (stability) - power drop
MPL 50x50x10 / N38

Table 6: Two magnets (repulsion) - field collision
MPL 50x50x10 / N38

Table 7: Hazards (implants) - warnings
MPL 50x50x10 / N38

Table 8: Dynamics (cracking risk) - collision effects
MPL 50x50x10 / N38

Table 9: Corrosion resistance
MPL 50x50x10 / N38

Table 10: Electrical data (P_c)
MPL 50x50x10 / N38

Table 11: Physics of underwater searching
MPL 50x50x10 / N38