Product available Ships today (order by 14:00)

MPL 40x10x4 / 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 020150

GTIN/EAN: 5906301811565

5.00

length

40 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

12 g

Magnetization Direction

↑ axial

Load capacity

9.31 kg / 91.33 N

Magnetic Induction

275.57 mT / 2756 Gs

Coating

[NiCuNi] Nickel

product details »

4.87 ZŁ with VAT / pcs + price for transport

3.96 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.96 ZŁ

4.87 ZŁ

price from 200 pcs

3.72 ZŁ

4.58 ZŁ

price from 650 pcs

3.48 ZŁ

4.29 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Looking for a better price?

Contact us by phone +48 888 99 98 98 or get in touch via contact form the contact page.
Lifting power along with form of magnetic components can be checked with our power calculator.

Order by 14:00 and we’ll ship today!

Technical parameters of the product - MPL 40x10x4 / N38 - lamellar magnet

Specification / characteristics - MPL 40x10x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020150
GTIN/EAN	5906301811565
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	10 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	12 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.31 kg / 91.33 N
Magnetic Induction ~ ?	275.57 mT / 2756 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x10x4 / 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

Engineering modeling of the product - report

The following values are the outcome of a engineering analysis. Values are based on models for the material Nd₂Fe₁₄B. Operational parameters may differ. Please consider these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - power drop
MPL 40x10x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2755 Gs 275.5 mT	9.31 kg / 20.53 lbs 9310.0 g / 91.3 N	strong
1 mm	2413 Gs 241.3 mT	7.14 kg / 15.75 lbs 7143.1 g / 70.1 N	strong
2 mm	2044 Gs 204.4 mT	5.13 kg / 11.31 lbs 5128.9 g / 50.3 N	strong
3 mm	1703 Gs 170.3 mT	3.56 kg / 7.85 lbs 3559.5 g / 34.9 N	strong
5 mm	1173 Gs 117.3 mT	1.69 kg / 3.72 lbs 1688.2 g / 16.6 N	low risk
10 mm	522 Gs 52.2 mT	0.33 kg / 0.74 lbs 334.9 g / 3.3 N	low risk
15 mm	277 Gs 27.7 mT	0.09 kg / 0.21 lbs 94.2 g / 0.9 N	low risk
20 mm	163 Gs 16.3 mT	0.03 kg / 0.07 lbs 32.8 g / 0.3 N	low risk
30 mm	69 Gs 6.9 mT	0.01 kg / 0.01 lbs 5.8 g / 0.1 N	low risk
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 lbs 0.5 g / 0.0 N	low risk

Magnetic force weakens significantly per each millimeter of gap. Keep in mind that even the smallest gap (e.g., contamination, paint, dust) significantly weakens the grip. Magnets work most effectively in perfect adhesion; distance weakens the force. Analyze how quickly the parameters drop, when the magnet does not adhere flatly to the metal substrate. When planning the assembly, discard additional spacers.

Table 2: Slippage capacity (wall)
MPL 40x10x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.86 kg / 4.11 lbs 1862.0 g / 18.3 N
1 mm	Stal (~0.2)	1.43 kg / 3.15 lbs 1428.0 g / 14.0 N
2 mm	Stal (~0.2)	1.03 kg / 2.26 lbs 1026.0 g / 10.1 N
3 mm	Stal (~0.2)	0.71 kg / 1.57 lbs 712.0 g / 7.0 N
5 mm	Stal (~0.2)	0.34 kg / 0.75 lbs 338.0 g / 3.3 N
10 mm	Stal (~0.2)	0.07 kg / 0.15 lbs 66.0 g / 0.6 N
15 mm	Stal (~0.2)	0.02 kg / 0.04 lbs 18.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The table below calculates the estimated holding capacity needed to initiate the slippage of the magnet down against a vertical steel wall (assuming typical friction coefficient). The holding force varies with the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x10x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.79 kg / 6.16 lbs 2793.0 g / 27.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.86 kg / 4.11 lbs 1862.0 g / 18.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.93 kg / 2.05 lbs 931.0 g / 9.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.66 kg / 10.26 lbs 4655.0 g / 45.7 N

When mounting a magnet on a upright surface (e.g., a fridge), it will maintain only approx. 1/5 of its maximum pull force. Gravity and a weak degree of grip cause that holders move down faster than they pop off the substrate. Designing a wall mount? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a significantly smaller cargo. Utilizing a rubberized layer can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x10x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.93 kg / 2.05 lbs 931.0 g / 9.1 N
1 mm	25%	2.33 kg / 5.13 lbs 2327.5 g / 22.8 N
2 mm	50%	4.66 kg / 10.26 lbs 4655.0 g / 45.7 N
3 mm	75%	6.98 kg / 15.39 lbs 6982.5 g / 68.5 N
5 mm	100%	9.31 kg / 20.53 lbs 9310.0 g / 91.3 N
10 mm	100%	9.31 kg / 20.53 lbs 9310.0 g / 91.3 N
11 mm	100%	9.31 kg / 20.53 lbs 9310.0 g / 91.3 N
12 mm	100%	9.31 kg / 20.53 lbs 9310.0 g / 91.3 N

A too thin steel is unable to conduct the entire magnetic field, which squanders power of the holder. If you attach a powerful product to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To utilize 100% of this neodymium's power, you need a suitably thick piece of metal. The saturation effect causes that on thin elements (e.g., thin profiles), the holder shows lower pull force. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - power drop
MPL 40x10x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.31 kg / 20.53 lbs 9310.0 g / 91.3 N	OK
40 °C	-2.2%	9.11 kg / 20.07 lbs 9105.2 g / 89.3 N	OK
60 °C	-4.4%	8.90 kg / 19.62 lbs 8900.4 g / 87.3 N
80 °C	-6.6%	8.70 kg / 19.17 lbs 8695.5 g / 85.3 N
100 °C	-28.8%	6.63 kg / 14.61 lbs 6628.7 g / 65.0 N

Standard neodymium magnets change their properties parameters above the temperature limit. Watch out for overheating – high temperature can irreversibly destroy this magnet. With increasing heat, the magnet's power temporarily lowers. Avoid using this magnet close to heaters exceeding its working range. Too high temperature will result in permanent loss of magnetic properties.

*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) are more susceptible to demagnetization sooner than long magnets. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 40x10x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	18.71 kg / 41.25 lbs 4 164 Gs	2.81 kg / 6.19 lbs 2807 g / 27.5 N	N/A
1 mm	16.57 kg / 36.53 lbs 5 185 Gs	2.49 kg / 5.48 lbs 2486 g / 24.4 N	14.91 kg / 32.88 lbs ~0 Gs
2 mm	14.36 kg / 31.65 lbs 4 826 Gs	2.15 kg / 4.75 lbs 2153 g / 21.1 N	12.92 kg / 28.48 lbs ~0 Gs
3 mm	12.24 kg / 26.98 lbs 4 455 Gs	1.84 kg / 4.05 lbs 1836 g / 18.0 N	11.01 kg / 24.28 lbs ~0 Gs
5 mm	8.61 kg / 18.98 lbs 3 737 Gs	1.29 kg / 2.85 lbs 1291 g / 12.7 N	7.75 kg / 17.08 lbs ~0 Gs
10 mm	3.39 kg / 7.48 lbs 2 346 Gs	0.51 kg / 1.12 lbs 509 g / 5.0 N	3.05 kg / 6.73 lbs ~0 Gs
20 mm	0.67 kg / 1.48 lbs 1 045 Gs	0.10 kg / 0.22 lbs 101 g / 1.0 N	0.61 kg / 1.34 lbs ~0 Gs
50 mm	0.03 kg / 0.06 lbs 207 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs
60 mm	0.01 kg / 0.03 lbs 138 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs
70 mm	0.01 kg / 0.01 lbs 96 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.01 lbs 69 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 51 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 39 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums interact from a much further distance than a magnet and steel setup. Such a system of magnet-to-magnet creates a more powerful interaction and a larger range of action. Planning to create a solid fastener? Use a pair of magnets instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the pinch force is extreme. The repulsion force is marginally weaker than the connection force, but still significant.
*The magnetic induction in repulsion mode is approximately ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Important: Calculations refer to shear force of two identical magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 40x10x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	4.0 cm
Car key	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a real danger to electronics and medical implants. These NdFeB products generate a flux that disrupts operation of sensitive medical devices. Be aware: the unseen radiation acts through matter and glass. Exceptional care must be taken by people with hearing aids and drug dispensers. The risk also applies to: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
MPL 40x10x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.72 km/h (7.98 m/s)	0.38 J
30 mm	48.67 km/h (13.52 m/s)	1.10 J
50 mm	62.82 km/h (17.45 m/s)	1.83 J
100 mm	88.83 km/h (24.68 m/s)	3.65 J

Neodymium magnets are delicate – a collision with steel risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can cause material chips or injury to skin. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Coating parameters (durability)
MPL 40x10x4 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MPL 40x10x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 840 Mx	98.4 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data when building generators as well as sensors. P_c value defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 40x10x4 / N38

Environment	Effective steel pull	Effect
Air (land)	9.31 kg	Standard
Water (riverbed)	10.66 kg (+1.35 kg buoyancy gain)	+14.5%

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

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

1. Shear force

*Warning: On a vertical surface, the magnet retains only ~20% of its max power.

2. Steel saturation

*Thin metal sheet (e.g. computer case) severely reduces the holding force.

3. Heat tolerance

*For N38 material, 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) = 0.26

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 and environmental data

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: 020150-2026

Measurement Calculator

Force (pull)

Kilograms (kg)

Newtons (N)

Pounds (lbs)

Magnetic Field

Input a figure in just one field to see the conversion for the other fields right away.

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

189.91 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 32x300 [2xM8] / N42 - magnetic separator

897.90 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

150.00 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MP 60x20x5 / N38 - ring magnet

47.99 ZŁ brutto / pcs

Component MPL 40x10x4 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 91.33 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 shifting 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 40x10x4 / 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 40x10x4 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 9.31 kg), they are ideal as closers 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. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 40x10x4 / N38 model is magnetized axially (dimension 4 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 40x10x4 mm, which, at a weight of 12 g, makes it an element with high energy density. It is a magnetic block with dimensions 40x10x4 mm and a self-weight of 12 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths and weaknesses of neodymium magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They do not lose strength, even over approximately 10 years – the drop in power is only ~1% (according to tests),
They maintain their magnetic properties even under external field action,
By covering with a reflective layer of nickel, the element presents an nice look,
The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Possibility of custom modeling as well as optimizing to individual needs,
Key role in high-tech industry – they serve a role in hard drives, electric motors, medical equipment, as well as complex engineering applications.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets: weaknesses and usage proposals

At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's 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 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 when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in producing nuts and complex forms in magnets, we recommend using a housing - magnetic mechanism.
Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these products can complicate diagnosis medical in case of swallowing.
With mass production the cost of neodymium magnets is a challenge,

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

The specified lifting capacity refers to the limit force, measured under laboratory conditions, specifically:

using a plate made of low-carbon steel, acting as a ideal flux conductor
possessing a thickness of at least 10 mm to avoid saturation
with an ground touching surface
under conditions of no distance (metal-to-metal)
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

Effective lifting capacity is affected by working environment parameters, such as (from most important):

Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Metal type – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
Surface quality – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate reduces the holding force.

Safety rules for work with NdFeB magnets

Electronic devices

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

Fragile material

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Bodily injuries

Big blocks can smash fingers instantly. Never put your hand between two strong magnets.

Keep away from electronics

An intense magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Maintain magnets near a smartphone to prevent damaging the sensors.

Allergic reactions

It is widely known that nickel (the usual finish) is a common allergen. If you have an allergy, refrain from direct skin contact or choose coated magnets.

Safe operation

Before use, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

ICD Warning

Warning for patients: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.

Operating temperature

Avoid heat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Product not for children

Product intended for adults. Tiny parts can be swallowed, leading to severe trauma. Keep out of reach of children and animals.

Fire warning

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

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

MPL 40x10x4 / N38 - lamellar magnet

Technical parameters of the product - MPL 40x10x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the product - report

Table 1: Static force (pull vs distance) - power drop MPL 40x10x4 / N38

Table 2: Slippage capacity (wall) MPL 40x10x4 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 40x10x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 40x10x4 / N38

Table 5: Working in heat (material behavior) - power drop MPL 40x10x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MPL 40x10x4 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MPL 40x10x4 / N38

Table 8: Dynamics (cracking risk) - warning MPL 40x10x4 / N38

Table 9: Coating parameters (durability) MPL 40x10x4 / N38

Table 10: Construction data (Pc) MPL 40x10x4 / N38

Table 11: Hydrostatics and buoyancy MPL 40x10x4 / N38

1. Shear force

2. Steel saturation

3. Heat tolerance

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

Chemical composition

Environmental data

Force (pull)

Magnetic Field

See also offers

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

SM 32x300 [2xM8] / N42 - magnetic separator

UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

MP 60x20x5 / N38 - ring magnet

Strengths and weaknesses of neodymium magnets.

Pros

Disadvantages

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

Impact of factors on magnetic holding capacity in practice

Safety rules for work with NdFeB magnets

Electronic devices

Fragile material

Bodily injuries

Keep away from electronics

Allergic reactions

Safe operation

ICD Warning

Operating temperature

Product not for children

Fire warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MPL 40x10x4 / N38

Table 2: Slippage capacity (wall)
MPL 40x10x4 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x10x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x10x4 / N38

Table 5: Working in heat (material behavior) - power drop
MPL 40x10x4 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 40x10x4 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 40x10x4 / N38

Table 8: Dynamics (cracking risk) - warning
MPL 40x10x4 / N38

Table 9: Coating parameters (durability)
MPL 40x10x4 / N38

Table 10: Construction data (P_c)
MPL 40x10x4 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x10x4 / N38