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MPL 5x4x1 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN

lamellar magnet

Catalog no 020169

GTIN/EAN: 5906301811756

5.00

Load capacity 0.32 kg / 3.16 N Magnetic Induction 232.88 mT / 2329 Gs

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
Coating: [NiCuNi] Nickel

technical details »

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Frequently asked questions

How much will a block magnet really hold?

The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.

What is the maximum working temperature?

Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.

What safety factor should I allow?

At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical data - 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	310	°C
Curie Temperature TF	590	°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 magnet - report

These values are the direct effect of a engineering simulation. Results were calculated on algorithms for the class Nd₂Fe₁₄B. Actual conditions may differ. Use these calculations as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
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	low risk
1 mm	1559 Gs 155.9 mT	0.14 kg / 0.32 pounds 143.7 g / 1.4 N	low risk
2 mm	876 Gs 87.6 mT	0.05 kg / 0.10 pounds 45.3 g / 0.4 N	low risk
3 mm	488 Gs 48.8 mT	0.01 kg / 0.03 pounds 14.1 g / 0.1 N	low risk
5 mm	177 Gs 17.7 mT	0.00 kg / 0.00 pounds 1.9 g / 0.0 N	low risk
10 mm	31 Gs 3.1 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk
15 mm	10 Gs 1.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
20 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
30 mm	1 Gs 0.1 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk
50 mm	0 Gs 0.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Magnetic force weakens significantly with every subsequent millimeter of spacing. Remember that even the smallest gap (e.g., contamination, paint, dust) noticeably diminishes the holding power. Neodymiums work strongest during direct contact; distance kills the force. Analyze how quickly the parameters fall, when the magnet does not adhere flatly to the metal substrate. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Slippage hold (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 indicates the estimated shear load needed to cause the shifting of the magnet vertically along a vertical steel plate (assuming typical friction coefficient). This value is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - 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 placing a element on a vertical plane (e.g., a board), it you can count on just approx. 1/5 of its maximum pull force. Gravity as well as a weak degree of grip influence the fact that holders move down easier than they pull off. Designing a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will give way down under a much lighter cargo. Using a rubber layer can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
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 too thin steel cannot conduct the full magnetic flux, which weakens actual performance of the magnet. Should you mount a strong magnet to a too thin substrate, the field will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you require a sufficiently solid piece of steel. The saturation phenomenon causes that on sheet metal structures (e.g., car bodies), the magnet works worse. We advise picking the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
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

Ordinary NdFeB products lose parameters after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly destroy this magnet. As the temperature rises, the magnet's capacity briefly decreases. Avoid using this magnet close to heaters exceeding its operating temperature limit. Too high temperature will result in destruction of magnetism.

*Technical advisory: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low Pc) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 5x4x1 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear 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 magnetic products interact from a much further distance than a magnet and sheet setup. The connection of two magnets produces a massive flux and a further horizon of performance. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the impact force is massive. The levitation is marginally weaker than the connection force, but still large.
*Flux density in repulsion mode reaches ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Important: Figures apply to shear force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - 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
Timepiece	20 Gs (2.0 mT)	1.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.0 cm
Remote	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

A strong magnetic field poses a large risk to electronics and medical implants. These NdFeB products generate a field that destroys function of digital equipment. Remember: the invisible magnetic field acts through matter and housings. Increased vigilance must be taken by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

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

Start from (mm)	Speed (km/h)	Energy (J)	Predicted outcome
10 mm	24.75 km/h (6.87 m/s)	0.00 J
30 mm	24.74 km/h (6.87 m/s)	0.00 J
50 mm	24.71 km/h (6.86 m/s)	0.00 J
100 mm	24.75 km/h (6.88 m/s)	0.00 J

NdFeB products are delicate – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or painful pinches to skin. Always hold the magnet during installation so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles when playing with powerful specimens.

Table 9: Corrosion resistance
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
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 when building generators as well as sensors. P_c value defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
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%

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

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Shear force

*Warning: On a vertical surface, the magnet holds just a fraction of its perpendicular strength.

2. Plate thickness effect

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

3. Thermal stability

*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) = 0.29

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.

Engineering data and GPSR

Elemental analysis

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: 020169-2026

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Component MPL 5x4x1 / N38 features a low profile and industrial pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 0.32 kg), this product is available immediately from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating secures 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 0.32 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 5x4x1 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

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. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 5x4x1 mm, which, at a weight of 0.15 g, makes it an element with high 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.

Pros as well as cons of neodymium magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:

They have constant strength, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
They do not lose their magnetic properties even under close interference source,
By applying a smooth coating of nickel, the element acquires an proper look,
Neodymium magnets generate maximum magnetic induction on a their surface, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Possibility of custom modeling and adjusting to concrete needs,
Huge importance in high-tech industry – they are utilized in HDD drives, drive modules, medical equipment, as well as complex engineering applications.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of neodymium magnets:

At strong impacts they can break, therefore we recommend placing them in special holders. 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
They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing threads and complicated shapes in magnets, we propose using cover - magnetic holder.
Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these magnets can be problematic in diagnostics medical after entering the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

The declared magnet strength represents the peak performance, measured under laboratory conditions, namely:

with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
possessing a massiveness of at least 10 mm to avoid saturation
with an ground contact surface
with total lack of distance (no coatings)
for force applied at a right angle (pull-off, not shear)
at temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

Please note that the application force will differ depending on the following factors, in order of importance:

Gap (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
Load vector – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
Chemical composition of the base – mild steel gives the best results. Higher carbon content lower magnetic properties and lifting capacity.
Surface condition – ground elements ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

H&S for magnets

Heat warning

Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.

Fire warning

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Danger to pacemakers

People with a heart stimulator have to maintain an large gap from magnets. The magnetic field can stop the functioning of the life-saving device.

Phone sensors

GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a strong magnet can ruin the internal compass in your phone.

Choking Hazard

These products are not toys. Eating several magnets can lead to them pinching intestinal walls, which constitutes a critical condition and requires immediate surgery.

Sensitization to coating

It is widely known that nickel (standard magnet coating) is a potent allergen. If you have an allergy, avoid direct skin contact and choose encased magnets.

Magnets are brittle

NdFeB magnets are ceramic materials, which means they are very brittle. Clashing of two magnets will cause them shattering into shards.

Cards and drives

Device Safety: Neodymium magnets can damage data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

Crushing risk

Large magnets can break fingers instantly. Do not put your hand between two strong magnets.

Immense force

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.

Attention! Need more info? Check our post: Are neodymium magnets dangerous?

MPL 5x4x1 / N38 - lamellar magnet

Technical data - MPL 5x4x1 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - report

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

Table 2: Slippage hold (wall) MPL 5x4x1 / N38

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

Table 4: Steel thickness (saturation) - power losses MPL 5x4x1 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MPL 5x4x1 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MPL 5x4x1 / N38

Table 7: Hazards (electronics) - warnings MPL 5x4x1 / N38

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

Table 9: Corrosion resistance MPL 5x4x1 / N38

Table 10: Electrical data (Pc) MPL 5x4x1 / N38

Table 11: Hydrostatics and buoyancy MPL 5x4x1 / N38

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

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Pros as well as cons of neodymium magnets.

Benefits

Cons

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

Impact of factors on magnetic holding capacity in practice

H&S for magnets

Heat warning

Fire warning

Danger to pacemakers

Phone sensors

Choking Hazard

Sensitization to coating

Magnets are brittle

Cards and drives

Crushing risk

Immense force

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage hold (wall)
MPL 5x4x1 / N38

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

Table 4: Steel thickness (saturation) - power losses
MPL 5x4x1 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MPL 5x4x1 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 5x4x1 / N38

Table 7: Hazards (electronics) - warnings
MPL 5x4x1 / N38

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

Table 9: Corrosion resistance
MPL 5x4x1 / N38

Table 10: Electrical data (P_c)
MPL 5x4x1 / N38

Table 11: Hydrostatics and buoyancy
MPL 5x4x1 / N38