Product available Ships today (order by 14:00)

MPL 40x5x3 / 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
Rating: 5

lamellar magnet

Catalog no 020402

GTIN/EAN: 5906301811916

length

40 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

4.5 g

Magnetization Direction

↑ axial

Load capacity

7.33 kg / 71.91 N

Magnetic Induction

348.83 mT / 3488 Gs

Coating

[NiCuNi] Nickel

technical details »

6.65 ZŁ with VAT / pcs + price for transport

5.41 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

5.41 ZŁ

6.65 ZŁ

price from 150 pcs

5.09 ZŁ

6.26 ZŁ

price from 500 pcs

4.76 ZŁ

5.86 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have problems deciding?

Call us now +48 888 99 98 98 or let us know by means of inquiry form the contact page.
Specifications and appearance of a magnet can be reviewed with our modular calculator.

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

Technical parameters of the product - MPL 40x5x3 / N38 - lamellar magnet

Specification / characteristics - MPL 40x5x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020402
GTIN/EAN	5906301811916
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	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	4.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.33 kg / 71.91 N
Magnetic Induction ~ ?	348.83 mT / 3488 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x5x3 / 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 information constitute the outcome of a mathematical calculation. Results rely on algorithms for the material Nd₂Fe₁₄B. Real-world parameters may deviate from the simulation results. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
MPL 40x5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3485 Gs 348.5 mT	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N	warning
1 mm	2529 Gs 252.9 mT	3.86 kg / 8.51 pounds 3859.9 g / 37.9 N	warning
2 mm	1741 Gs 174.1 mT	1.83 kg / 4.03 pounds 1829.7 g / 17.9 N	low risk
3 mm	1217 Gs 121.7 mT	0.89 kg / 1.97 pounds 893.7 g / 8.8 N	low risk
5 mm	664 Gs 66.4 mT	0.27 kg / 0.59 pounds 265.9 g / 2.6 N	low risk
10 mm	235 Gs 23.5 mT	0.03 kg / 0.07 pounds 33.5 g / 0.3 N	low risk
15 mm	116 Gs 11.6 mT	0.01 kg / 0.02 pounds 8.2 g / 0.1 N	low risk
20 mm	67 Gs 6.7 mT	0.00 kg / 0.01 pounds 2.7 g / 0.0 N	low risk
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 pounds 0.5 g / 0.0 N	low risk
50 mm	8 Gs 0.8 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Grip strength drops sharply with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, paint, rust) noticeably weakens the grip. Magnetic products operate most effectively in perfect adhesion; gap weakens the force. Analyze how rapidly the parameters drop, when the magnet does not touch flatly to the metal substrate. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Shear capacity (wall)
MPL 40x5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.47 kg / 3.23 pounds 1466.0 g / 14.4 N
1 mm	Stal (~0.2)	0.77 kg / 1.70 pounds 772.0 g / 7.6 N
2 mm	Stal (~0.2)	0.37 kg / 0.81 pounds 366.0 g / 3.6 N
3 mm	Stal (~0.2)	0.18 kg / 0.39 pounds 178.0 g / 1.7 N
5 mm	Stal (~0.2)	0.05 kg / 0.12 pounds 54.0 g / 0.5 N
10 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 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

The table below presents the approximate force required to initiate the slippage of the magnet downwards against a upright steel plate (considering standard friction coefficient). This parameter varies with the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 40x5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.20 kg / 4.85 pounds 2199.0 g / 21.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.47 kg / 3.23 pounds 1466.0 g / 14.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.62 pounds 733.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.67 kg / 8.08 pounds 3665.0 g / 36.0 N

When placing a magnet on a vertical plane (e.g., a fridge), it will maintain barely about 1/5 of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that holders slide down easier than they pull off. Planning a hanger? Consider that the sliding force is much weaker than the maximum static pull force. On a smooth steel, the magnet will slip down under a noticeably lighter cargo. Application of an anti-slip pad can effectively improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.73 kg / 1.62 pounds 733.0 g / 7.2 N
1 mm	25%	1.83 kg / 4.04 pounds 1832.5 g / 18.0 N
2 mm	50%	3.67 kg / 8.08 pounds 3665.0 g / 36.0 N
3 mm	75%	5.50 kg / 12.12 pounds 5497.5 g / 53.9 N
5 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N
10 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N
11 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N
12 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N

A too thin steel is unable to conduct the entire magnetic field, which wastes potential of the magnet. If you install a neodymium to a thin surface, the field will pass right through and the pull force will drop sharply. To achieve 100% of this magnet's power, you need a suitably thick backing of steel. The saturation phenomenon causes that on thin elements (e.g., appliance housings), the holder shows lower pull force. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MPL 40x5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N	OK
40 °C	-2.2%	7.17 kg / 15.80 pounds 7168.7 g / 70.3 N	OK
60 °C	-4.4%	7.01 kg / 15.45 pounds 7007.5 g / 68.7 N
80 °C	-6.6%	6.85 kg / 15.09 pounds 6846.2 g / 67.2 N
100 °C	-28.8%	5.22 kg / 11.51 pounds 5219.0 g / 51.2 N

Standard neodymium magnets lose power past the thermal threshold. Watch out for overheating – excessive heat can permanently destroy this product. With increasing heat, the magnet's capacity briefly lowers. Do not use this product close to heaters higher than its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetism.

*Technical advisory: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) are more susceptible to demagnetization sooner than long magnets. Red status in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - field collision
MPL 40x5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	14.97 kg / 33.01 pounds 4 697 Gs	2.25 kg / 4.95 pounds 2246 g / 22.0 N	N/A
1 mm	11.16 kg / 24.61 pounds 6 017 Gs	1.67 kg / 3.69 pounds 1674 g / 16.4 N	10.04 kg / 22.15 pounds ~0 Gs
2 mm	7.88 kg / 17.38 pounds 5 058 Gs	1.18 kg / 2.61 pounds 1183 g / 11.6 N	7.10 kg / 15.64 pounds ~0 Gs
3 mm	5.44 kg / 11.99 pounds 4 201 Gs	0.82 kg / 1.80 pounds 816 g / 8.0 N	4.90 kg / 10.79 pounds ~0 Gs
5 mm	2.59 kg / 5.71 pounds 2 899 Gs	0.39 kg / 0.86 pounds 389 g / 3.8 N	2.33 kg / 5.14 pounds ~0 Gs
10 mm	0.54 kg / 1.20 pounds 1 328 Gs	0.08 kg / 0.18 pounds 81 g / 0.8 N	0.49 kg / 1.08 pounds ~0 Gs
20 mm	0.07 kg / 0.15 pounds 471 Gs	0.01 kg / 0.02 pounds 10 g / 0.1 N	0.06 kg / 0.14 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 83 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 55 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 38 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 27 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 20 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 15 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a neodymium and metal setup. The setup of magnet-to-magnet generates a stronger field and a further horizon of operation. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a steel. Remember that when bringing together two magnets, the collision energy is huge. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density in repulsion mode drops to ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Note: Figures demonstrate shear force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MPL 40x5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Timepiece	20 Gs (2.0 mT)	3.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Extremely neodym field poses a large risk to IT equipment as well as medical implants. These magnets produce a field that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field acts through matter and plastic. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MPL 40x5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	40.82 km/h (11.34 m/s)	0.29 J
30 mm	70.50 km/h (19.58 m/s)	0.86 J
50 mm	91.02 km/h (25.28 m/s)	1.44 J
100 mm	128.71 km/h (35.75 m/s)	2.88 J

NdFeB products are delicate – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely becomes dangerous. Impact energy can cause material chips or injury to skin. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the neodymium. Use safety goggles when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MPL 40x5x3 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MPL 40x5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 123 Mx	51.2 µWb
P_c Coefficient	0.27	Low (Flat)

Total magnetic flux emitted by the magnet pole. Key data when building generators and motors. P_c value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	7.33 kg	Standard
Water (riverbed)	8.39 kg (+1.06 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.

2. Steel saturation

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

3. Thermal stability

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.27

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 and environmental data

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%

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: 020402-2026

Quick Unit Converter

Force (pull)

Force in kg

Force (N)

Force in lbs

Field Strength

Gauss (Gs)

Type data in a box, and the remaining units change instantly.

Other deals

Product available Ships today (order by 14:00)

SM 32x100 [2xM8] / N42 - magnetic separator

307.50 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 32x475 [2xM8] / N42 - magnetic separator

1414.50 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMS 20x8.6x4.5x7 / N38 - conical magnetic holder

6.46 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 3x2 / N38 - cylindrical magnet

0.1476 ZŁ brutto / pcs

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x5x3 mm and a weight of 4.5 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 7.33 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 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 7.33 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 7.33 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.

For mounting flat magnets MPL 40x5x3 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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. 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.

The presented product is a neodymium magnet with precisely defined parameters: 40 mm (length), 5 mm (width), and 3 mm (thickness). It is a magnetic block with dimensions 40x5x3 mm and a self-weight of 4.5 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of neodymium magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:

Their strength is durable, and after approximately 10 years it decreases only by ~1% (according to research),
Neodymium magnets are distinguished by remarkably resistant to loss of magnetic properties caused by external magnetic fields,
A magnet with a smooth gold surface has an effective appearance,
The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Due to the ability of free molding and customization to specialized requirements, NdFeB magnets can be created in a variety of shapes and sizes, which expands the range of possible applications,
Universal use in innovative solutions – they serve a role in mass storage devices, drive modules, precision medical tools, as well as modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of neodymium magnets:

To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Due to limitations in producing threads and complex shapes in magnets, we propose using cover - magnetic mechanism.
Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical in case of swallowing.
With mass production the cost of neodymium magnets is a challenge,

Pull force analysis

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

The specified lifting capacity represents the peak performance, obtained under ideal test conditions, meaning:

with the contact of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
whose thickness is min. 10 mm
with an ideally smooth contact surface
with zero gap (without impurities)
for force applied at a right angle (pull-off, not shear)
in stable room temperature

Determinants of practical lifting force of a magnet

It is worth knowing that the application force will differ depending on elements below, in order of importance:

Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Direction of force – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
Material composition – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
Surface condition – ground elements ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the holding force.

H&S for magnets

Demagnetization risk

Keep cool. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Keep away from computers

Avoid bringing magnets close to a wallet, laptop, or TV. The magnetism can permanently damage these devices and erase data from cards.

Adults only

Only for adults. Tiny parts pose a choking risk, causing serious injuries. Keep away from children and animals.

Warning for allergy sufferers

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction appears, immediately stop handling magnets and use protective gear.

Crushing force

Protect your hands. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Machining danger

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Immense force

Use magnets consciously. Their powerful strength can surprise even professionals. Be vigilant and respect their force.

Eye protection

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them shattering into shards.

Life threat

Health Alert: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Threat to navigation

Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can ruin the internal compass in your phone.

Danger! Want to know more? Check our post: Why are neodymium magnets dangerous?

MPL 40x5x3 / N38 - lamellar magnet

Technical parameters of the product - MPL 40x5x3 / 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) - interaction chart MPL 40x5x3 / N38

Table 2: Shear capacity (wall) MPL 40x5x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull MPL 40x5x3 / N38

Table 4: Steel thickness (substrate influence) - power losses MPL 40x5x3 / N38

Table 5: Thermal resistance (material behavior) - power drop MPL 40x5x3 / N38

Table 6: Two magnets (attraction) - field collision MPL 40x5x3 / N38

Table 7: Safety (HSE) (implants) - warnings MPL 40x5x3 / N38

Table 8: Dynamics (cracking risk) - warning MPL 40x5x3 / N38

Table 9: Anti-corrosion coating durability MPL 40x5x3 / N38

Table 10: Construction data (Flux) MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy MPL 40x5x3 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Material specification

Environmental data

Force (pull)

Field Strength

Other deals

SM 32x100 [2xM8] / N42 - magnetic separator

SM 32x475 [2xM8] / N42 - magnetic separator

UMS 20x8.6x4.5x7 / N38 - conical magnetic holder

MW 3x2 / N38 - cylindrical magnet

Strengths and weaknesses of neodymium magnets.

Strengths

Disadvantages

Pull force analysis

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

Determinants of practical lifting force of a magnet

H&S for magnets

Demagnetization risk

Keep away from computers

Adults only

Warning for allergy sufferers

Crushing force

Machining danger

Immense force

Eye protection

Life threat

Threat to navigation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MPL 40x5x3 / N38

Table 2: Shear capacity (wall)
MPL 40x5x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MPL 40x5x3 / N38

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x5x3 / N38

Table 5: Thermal resistance (material behavior) - power drop
MPL 40x5x3 / N38

Table 6: Two magnets (attraction) - field collision
MPL 40x5x3 / N38

Table 7: Safety (HSE) (implants) - warnings
MPL 40x5x3 / N38

Table 8: Dynamics (cracking risk) - warning
MPL 40x5x3 / N38

Table 9: Anti-corrosion coating durability
MPL 40x5x3 / N38

Table 10: Construction data (Flux)
MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38