Product available Ships today (order by 14:00)

MPL 5x4x1 / 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 020169

GTIN/EAN: 5906301811756

5.00

length

5 mm [±0,1 mm]

Width

4 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.15 g

Magnetization Direction

↑ axial

Load capacity

0.32 kg / 3.16 N

Magnetic Induction

232.88 mT / 2329 Gs

Coating

[NiCuNi] Nickel

technical parameters »

0.1845 ZŁ with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.1500 ZŁ

0.1845 ZŁ

price from 4000 pcs

0.1410 ZŁ

0.1734 ZŁ

price from 17000 pcs

0.1320 ZŁ

0.1624 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have problems deciding?

Give us a call +48 888 99 98 98 if you prefer send us a note using contact form the contact form page.
Parameters and shape of neodymium magnets can be estimated using our power calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical details - MPL 5x4x1 / N38 - lamellar magnet

Specification / characteristics - MPL 5x4x1 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020169
GTIN/EAN	5906301811756
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	5 mm [±0,1 mm]
Width	4 mm [±0,1 mm]
Height	1 mm [±0,1 mm]
Weight	0.15 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.32 kg / 3.16 N
Magnetic Induction ~ ?	232.88 mT / 2329 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x4x1 / 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 - report

These values represent the result of a engineering calculation. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance might slightly differ. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - characteristics
MPL 5x4x1 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2327 Gs 232.7 mT	0.32 kg / 0.71 pounds 320.0 g / 3.1 N	weak grip
1 mm	1559 Gs 155.9 mT	0.14 kg / 0.32 pounds 143.7 g / 1.4 N	weak grip
2 mm	876 Gs 87.6 mT	0.05 kg / 0.10 pounds 45.3 g / 0.4 N	weak grip
3 mm	488 Gs 48.8 mT	0.01 kg / 0.03 pounds 14.1 g / 0.1 N	weak grip
5 mm	177 Gs 17.7 mT	0.00 kg / 0.00 pounds 1.9 g / 0.0 N	weak grip
10 mm	31 Gs 3.1 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	weak grip
15 mm	10 Gs 1.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
20 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
30 mm	1 Gs 0.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
50 mm	0 Gs 0.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Magnetic force drops drastically with every subsequent millimeter of distance. Remember that even a very thin break (e.g., dirt, paint, veneer) strongly weakens the grip. Neodymiums hold most effectively at the point of direct contact; gap weakens the force. Analyze how quickly the parameters drop, when the magnet does not adhere directly to the steel surface. When planning the mounting, discard unnecessary gaps.

Table 2: Sliding capacity (wall)
MPL 5x4x1 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.06 kg / 0.14 pounds 64.0 g / 0.6 N
1 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 10.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section defines the approximate force needed to initiate the shifting of the magnet down on a vertical metal surface (assuming typical friction coefficient). This parameter depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 5x4x1 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.10 kg / 0.21 pounds 96.0 g / 0.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.06 kg / 0.14 pounds 64.0 g / 0.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.07 pounds 32.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.16 kg / 0.35 pounds 160.0 g / 1.6 N

When hanging a element on a upright plane (e.g., a car body), it you can count on barely approx. 20%-30% of its nominal power. Gravity and a weak degree of grip influence the fact that magnets slip easier than they pop off the substrate. Planning a vertical fastening? Consider that the shear force is significantly lower than the maximum static pull force. On a painted metal, the holder will slip down under a significantly smaller cargo. Application of an anti-slip pad can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 5x4x1 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.03 kg / 0.07 pounds 32.0 g / 0.3 N
1 mm	25%	0.08 kg / 0.18 pounds 80.0 g / 0.8 N
2 mm	50%	0.16 kg / 0.35 pounds 160.0 g / 1.6 N
3 mm	75%	0.24 kg / 0.53 pounds 240.0 g / 2.4 N
5 mm	100%	0.32 kg / 0.71 pounds 320.0 g / 3.1 N
10 mm	100%	0.32 kg / 0.71 pounds 320.0 g / 3.1 N
11 mm	100%	0.32 kg / 0.71 pounds 320.0 g / 3.1 N
12 mm	100%	0.32 kg / 0.71 pounds 320.0 g / 3.1 N

A thin metal plate is unable to conduct the entire magnetic field, which squanders power of the holder. If you install a neodymium to a weak sheet, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this neodymium's power, you require a sufficiently solid element of metal. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the product holds weaker. We suggest choosing the steel dimension based on the following data.

Table 5: Working in heat (stability) - power drop
MPL 5x4x1 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.32 kg / 0.71 pounds 320.0 g / 3.1 N	OK
40 °C	-2.2%	0.31 kg / 0.69 pounds 313.0 g / 3.1 N	OK
60 °C	-4.4%	0.31 kg / 0.67 pounds 305.9 g / 3.0 N
80 °C	-6.6%	0.30 kg / 0.66 pounds 298.9 g / 2.9 N
100 °C	-28.8%	0.23 kg / 0.50 pounds 227.8 g / 2.2 N

Standard neodymium magnets change their properties strength past the thermal threshold. Protect against heat – heat can irreversibly damage this product. With increasing heat, the magnet's force temporarily drops. Refrain from using this product close to ovens higher than its working range. Exceeding the critical threshold will result in destruction of magnetic properties.

*Engineering note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than taller cylinders. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MPL 5x4x1 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	0.67 kg / 1.47 pounds 3 878 Gs	0.10 kg / 0.22 pounds 100 g / 1.0 N	N/A
1 mm	0.48 kg / 1.06 pounds 3 959 Gs	0.07 kg / 0.16 pounds 72 g / 0.7 N	0.43 kg / 0.96 pounds ~0 Gs
2 mm	0.30 kg / 0.66 pounds 3 118 Gs	0.04 kg / 0.10 pounds 45 g / 0.4 N	0.27 kg / 0.59 pounds ~0 Gs
3 mm	0.17 kg / 0.38 pounds 2 356 Gs	0.03 kg / 0.06 pounds 26 g / 0.3 N	0.15 kg / 0.34 pounds ~0 Gs
5 mm	0.05 kg / 0.12 pounds 1 302 Gs	0.01 kg / 0.02 pounds 8 g / 0.1 N	0.05 kg / 0.10 pounds ~0 Gs
10 mm	0.00 kg / 0.01 pounds 355 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
20 mm	0.00 kg / 0.00 pounds 63 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 5 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 3 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 2 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 1 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 1 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 1 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets interact from a significantly greater distance than a neodymium and metal combination. Such a system of magnet-to-magnet generates a stronger field and a wider radius of performance. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Exercise caution that when bringing together two magnets, the impact force is massive. The repulsion force is a bit weaker than the attraction, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Results demonstrate friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MPL 5x4x1 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	2.0 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Mechanical watch	20 Gs (2.0 mT)	1.5 cm
Mobile device	40 Gs (4.0 mT)	1.0 cm
Car key	50 Gs (5.0 mT)	1.0 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Extremely neodym field is a real danger to IT equipment and medical implants. These magnets produce a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, speakers, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MPL 5x4x1 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	46.59 km/h (12.94 m/s)	0.01 J
30 mm	80.68 km/h (22.41 m/s)	0.04 J
50 mm	104.16 km/h (28.93 m/s)	0.06 J
100 mm	147.30 km/h (40.92 m/s)	0.13 J

NdFeB products are very brittle – a collision with steel risks their cracking. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Coating parameters (durability)
MPL 5x4x1 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MPL 5x4x1 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	531 Mx	5.3 µWb
P_c Coefficient	0.29	Low (Flat)

Flux value passing through the pole surface. Essential parameter in coil applications as well as sensors. P_c value defines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 5x4x1 / N38

Environment	Effective steel pull	Effect
Air (land)	0.32 kg	Standard
Water (riverbed)	0.37 kg (+0.05 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

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

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.29

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

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%

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: 020169-2026

Magnet Unit Converter

Pulling force

Force in kg

Newtons (N)

Force in lbs

Magnetic Field

Gauss (Gs)

Enter a value into any field, and the rest change on the fly.

Other deals

Product available Ships today (order by 14:00)

AM ucho [M12] - magnetic accessories

9.84 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

BM 320x180x70 [4x M8] - magnetic beam

3635.14 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

189.91 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 33x30 / N38 - cylindrical magnet

52.89 ZŁ brutto / pcs

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 5x4x1 mm and a weight of 0.15 g, guarantees premium class connection. This rectangular block with a force of 3.16 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

The key to success is sliding 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 5x4x1 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, 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 5x4x1 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 0.32 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 5x4x1 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 5x4x1 / N38 model is magnetized through the thickness (dimension 1 mm), which means that the N and S poles are located on its largest, flat surfaces. 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 5x4x1 mm, which, at a weight of 0.15 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 5x4x1 mm and a self-weight of 0.15 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of neodymium magnets.

Pros

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

They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (in testing),
They have excellent resistance to magnetic field loss due to opposing magnetic fields,
A magnet with a smooth silver surface is more attractive,
Neodymium magnets achieve maximum magnetic induction on a small surface, which increases force concentration,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of individual shaping as well as adapting to complex requirements,
Wide application in modern technologies – they serve a role in computer drives, drive modules, precision medical tools, as well as complex engineering applications.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Cons of neodymium magnets and proposals for their use:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in realizing threads and complicated shapes in magnets, we propose using cover - magnetic mechanism.
Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these magnets can disrupt the diagnostic process medical after entering the body.
Due to complex production process, their price is higher than average,

Lifting parameters

Maximum magnetic pulling force – what contributes to it?

Information about lifting capacity was determined for ideal contact conditions, including:

using a plate made of high-permeability steel, functioning as a circuit closing element
with a cross-section of at least 10 mm
with a plane perfectly flat
under conditions of gap-free contact (metal-to-metal)
under perpendicular force vector (90-degree angle)
in neutral thermal conditions

What influences lifting capacity in practice

It is worth knowing that the working load may be lower influenced by elements below, starting with the most relevant:

Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Load vector – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
Surface structure – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity was assessed with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet and the plate decreases the load capacity.

H&S for magnets

Keep away from electronics

Navigation devices and mobile phones are highly susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Allergic reactions

Some people suffer from a contact allergy to Ni, which is the common plating for neodymium magnets. Prolonged contact may cause an allergic reaction. It is best to wear protective gloves.

Flammability

Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Medical implants

For implant holders: Powerful magnets affect electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.

Shattering risk

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets will cause them cracking into small pieces.

Electronic hazard

Data protection: Strong magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, mechanical watches).

Do not underestimate power

Handle magnets with awareness. Their huge power can surprise even professionals. Stay alert and respect their power.

Adults only

NdFeB magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires urgent medical intervention.

Finger safety

Big blocks can break fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Demagnetization risk

Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and strength.

Security! Need more info? Read our article: Are neodymium magnets dangerous?

MPL 5x4x1 / N38 - lamellar magnet

Technical details - MPL 5x4x1 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - report

Table 1: Static force (pull vs distance) - characteristics MPL 5x4x1 / N38

Table 2: Sliding capacity (wall) MPL 5x4x1 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 5x4x1 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MPL 5x4x1 / N38

Table 5: Working in heat (stability) - power drop MPL 5x4x1 / N38

Table 6: Two magnets (repulsion) - field collision MPL 5x4x1 / N38

Table 7: Protective zones (implants) - warnings MPL 5x4x1 / N38

Table 8: Collisions (cracking risk) - collision effects MPL 5x4x1 / N38

Table 9: Coating parameters (durability) MPL 5x4x1 / N38

Table 10: Construction data (Flux) MPL 5x4x1 / N38

Table 11: Physics of underwater searching MPL 5x4x1 / N38

1. Sliding resistance

2. Plate thickness effect

3. Thermal stability

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

Chemical composition

Ecology and recycling (GPSR)

Pulling force

Magnetic Field

Other deals

AM ucho [M12] - magnetic accessories

BM 320x180x70 [4x M8] - magnetic beam

UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

MW 33x30 / N38 - cylindrical magnet

Advantages as well as disadvantages of neodymium magnets.

Pros

Cons

Lifting parameters

Maximum magnetic pulling force – what contributes to it?

What influences lifting capacity in practice

H&S for magnets

Keep away from electronics

Allergic reactions

Flammability

Medical implants

Shattering risk

Electronic hazard

Do not underestimate power

Adults only

Finger safety

Demagnetization risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MPL 5x4x1 / N38

Table 2: Sliding capacity (wall)
MPL 5x4x1 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 5x4x1 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 5x4x1 / N38

Table 5: Working in heat (stability) - power drop
MPL 5x4x1 / N38

Table 6: Two magnets (repulsion) - field collision
MPL 5x4x1 / N38

Table 7: Protective zones (implants) - warnings
MPL 5x4x1 / N38

Table 8: Collisions (cracking risk) - collision effects
MPL 5x4x1 / N38

Table 9: Coating parameters (durability)
MPL 5x4x1 / N38

Table 10: Construction data (Flux)
MPL 5x4x1 / N38

Table 11: Physics of underwater searching
MPL 5x4x1 / N38