MPL 40x20x4x2[7/3.5] / N38 - lamellar magnet

Product on order Ships in 3-5 days

MPL 40x20x4x2[7/3.5] / 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 020159

GTIN/EAN: 5906301811657

5.00

length

40 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

24 g

Magnetization Direction

↑ axial

Load capacity

7.52 kg / 73.80 N

Magnetic Induction

168.28 mT / 1683 Gs

Coating

[NiCuNi] Nickel

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17.96 ZŁ with VAT / pcs + price for transport

14.60 ZŁ net + 23% VAT / pcs

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Physical properties - MPL 40x20x4x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x20x4x2[7/3.5] / N38 - lamellar magnet

properties

properties	values
Cat. no.	020159
GTIN/EAN	5906301811657
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	20 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	24 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.52 kg / 73.80 N
Magnetic Induction ~ ?	168.28 mT / 1683 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x20x4x2[7/3.5] / 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 analysis of the product - technical parameters

These values represent the direct effect of a engineering analysis. Values rely on models for the class Nd₂Fe₁₄B. Actual conditions may differ. Use these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MPL 40x20x4x2[7/3.5] / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1683 Gs 168.3 mT	7.52 kg / 16.58 lbs 7520.0 g / 73.8 N	strong
1 mm	1613 Gs 161.3 mT	6.91 kg / 15.24 lbs 6913.8 g / 67.8 N	strong
2 mm	1524 Gs 152.4 mT	6.17 kg / 13.61 lbs 6172.9 g / 60.6 N	strong
3 mm	1423 Gs 142.3 mT	5.38 kg / 11.86 lbs 5379.4 g / 52.8 N	strong
5 mm	1207 Gs 120.7 mT	3.87 kg / 8.53 lbs 3869.8 g / 38.0 N	strong
10 mm	744 Gs 74.4 mT	1.47 kg / 3.24 lbs 1469.3 g / 14.4 N	low risk
15 mm	455 Gs 45.5 mT	0.55 kg / 1.21 lbs 550.7 g / 5.4 N	low risk
20 mm	288 Gs 28.8 mT	0.22 kg / 0.49 lbs 220.3 g / 2.2 N	low risk
30 mm	129 Gs 12.9 mT	0.04 kg / 0.10 lbs 44.4 g / 0.4 N	low risk
50 mm	38 Gs 3.8 mT	0.00 kg / 0.01 lbs 3.8 g / 0.0 N	low risk

Magnetic force decreases significantly with every subsequent millimeter of gap. Remember that even the smallest gap (e.g., contamination, varnish, veneer) significantly weakens the grip. Magnets hold strongest in perfect adhesion; air break kills the power. Notice how rapidly the parameters drop, when the product does not adhere tightly to the metal substrate. When calculating the mounting, avoid unnecessary gaps.

Table 2: Vertical capacity (wall)
MPL 40x20x4x2[7/3.5] / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.50 kg / 3.32 lbs 1504.0 g / 14.8 N
1 mm	Stal (~0.2)	1.38 kg / 3.05 lbs 1382.0 g / 13.6 N
2 mm	Stal (~0.2)	1.23 kg / 2.72 lbs 1234.0 g / 12.1 N
3 mm	Stal (~0.2)	1.08 kg / 2.37 lbs 1076.0 g / 10.6 N
5 mm	Stal (~0.2)	0.77 kg / 1.71 lbs 774.0 g / 7.6 N
10 mm	Stal (~0.2)	0.29 kg / 0.65 lbs 294.0 g / 2.9 N
15 mm	Stal (~0.2)	0.11 kg / 0.24 lbs 110.0 g / 1.1 N
20 mm	Stal (~0.2)	0.04 kg / 0.10 lbs 44.0 g / 0.4 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The table below presents the approximate shear load sufficient to start the shifting of the magnet down on a vertical steel plate (considering standard friction coefficient). This parameter is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x20x4x2[7/3.5] / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.26 kg / 4.97 lbs 2256.0 g / 22.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.50 kg / 3.32 lbs 1504.0 g / 14.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.75 kg / 1.66 lbs 752.0 g / 7.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.76 kg / 8.29 lbs 3760.0 g / 36.9 N

When hanging a element on a vertical plane (e.g., a board), it will maintain just approx. 20%-30% of nominal attraction strength. Gravity and a weak degree of grip mean that holders slip easier than they detach. Want to create a hanger? Note that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the holder will slide down under a much lighter cargo. Using a rubber coating can effectively improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x20x4x2[7/3.5] / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.75 kg / 1.66 lbs 752.0 g / 7.4 N
1 mm	25%	1.88 kg / 4.14 lbs 1880.0 g / 18.4 N
2 mm	50%	3.76 kg / 8.29 lbs 3760.0 g / 36.9 N
3 mm	75%	5.64 kg / 12.43 lbs 5640.0 g / 55.3 N
5 mm	100%	7.52 kg / 16.58 lbs 7520.0 g / 73.8 N
10 mm	100%	7.52 kg / 16.58 lbs 7520.0 g / 73.8 N
11 mm	100%	7.52 kg / 16.58 lbs 7520.0 g / 73.8 N
12 mm	100%	7.52 kg / 16.58 lbs 7520.0 g / 73.8 N

A thin sheet is unable to conduct the full magnetic flux, which squanders power of the holder. If you install a neodymium to a weak sheet, the flux will pass right through and the pull force will drop sharply. To utilize full efficiency of this magnet's power, you require a sufficiently solid backing of steel. The saturation effect causes that on delicate walls (e.g., appliance housings), the magnet holds weaker. We advise picking the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MPL 40x20x4x2[7/3.5] / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.52 kg / 16.58 lbs 7520.0 g / 73.8 N	OK
40 °C	-2.2%	7.35 kg / 16.21 lbs 7354.6 g / 72.1 N	OK
60 °C	-4.4%	7.19 kg / 15.85 lbs 7189.1 g / 70.5 N
80 °C	-6.6%	7.02 kg / 15.48 lbs 7023.7 g / 68.9 N
100 °C	-28.8%	5.35 kg / 11.80 lbs 5354.2 g / 52.5 N

Standard neodymium magnets irreversibly lose strength past the thermal threshold. Avoid high temperatures – heat can irreversibly damage this magnet. As the temperature rises, the neodymium's force temporarily lowers. Avoid using this product close to ovens exceeding its operating temperature limit. Too high temperature will cause destruction of magnetism.

*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Low-profile magnets (low Pc) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MPL 40x20x4x2[7/3.5] / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	13.96 kg / 30.78 lbs 2 997 Gs	2.09 kg / 4.62 lbs 2094 g / 20.5 N	N/A
1 mm	13.44 kg / 29.64 lbs 3 302 Gs	2.02 kg / 4.45 lbs 2017 g / 19.8 N	12.10 kg / 26.68 lbs ~0 Gs
2 mm	12.84 kg / 28.30 lbs 3 227 Gs	1.93 kg / 4.25 lbs 1926 g / 18.9 N	11.55 kg / 25.47 lbs ~0 Gs
3 mm	12.17 kg / 26.83 lbs 3 142 Gs	1.83 kg / 4.02 lbs 1826 g / 17.9 N	10.95 kg / 24.15 lbs ~0 Gs
5 mm	10.73 kg / 23.65 lbs 2 950 Gs	1.61 kg / 3.55 lbs 1609 g / 15.8 N	9.66 kg / 21.29 lbs ~0 Gs
10 mm	7.19 kg / 15.84 lbs 2 414 Gs	1.08 kg / 2.38 lbs 1078 g / 10.6 N	6.47 kg / 14.26 lbs ~0 Gs
20 mm	2.73 kg / 6.01 lbs 1 487 Gs	0.41 kg / 0.90 lbs 409 g / 4.0 N	2.46 kg / 5.41 lbs ~0 Gs
50 mm	0.18 kg / 0.39 lbs 379 Gs	0.03 kg / 0.06 lbs 27 g / 0.3 N	0.16 kg / 0.35 lbs ~0 Gs
60 mm	0.08 kg / 0.18 lbs 259 Gs	0.01 kg / 0.03 lbs 12 g / 0.1 N	0.07 kg / 0.16 lbs ~0 Gs
70 mm	0.04 kg / 0.09 lbs 183 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
80 mm	0.02 kg / 0.05 lbs 133 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
90 mm	0.01 kg / 0.03 lbs 99 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs
100 mm	0.01 kg / 0.02 lbs 76 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnetic products interact from a wider radius than a magnet and sheet combination. Such a system of two magnets produces a massive flux and a larger range of operation. Planning to create a powerful holder? Utilize two neodymiums instead of one magnet and a steel. Remember that when connecting a pair of magnets, the impact force is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*Field value in repulsion mode is approximately ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Results refer to sliding force of a pair of same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MPL 40x20x4x2[7/3.5] / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.5 cm
Hearing aid	10 Gs (1.0 mT)	8.5 cm
Mechanical watch	20 Gs (2.0 mT)	6.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Extremely neodym field poses a large risk to IT equipment and medical implants. These magnets generate a field that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MPL 40x20x4x2[7/3.5] / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.91 km/h (5.53 m/s)	0.37 J
30 mm	31.03 km/h (8.62 m/s)	0.89 J
50 mm	39.93 km/h (11.09 m/s)	1.48 J
100 mm	56.45 km/h (15.68 m/s)	2.95 J

Neodymium magnets are very brittle – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose becomes dangerous. Impact energy can destroy the magnet or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when working with large magnets.

Table 9: Corrosion resistance
MPL 40x20x4x2[7/3.5] / 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. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
MPL 40x20x4x2[7/3.5] / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	15 299 Mx	153.0 µWb
P_c Coefficient	0.19	Low (Flat)

Total magnetic flux passing through the pole surface. Key data in coil applications as well as sensors. P_c value determines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 40x20x4x2[7/3.5] / N38

Environment	Effective steel pull	Effect
Air (land)	7.52 kg	Standard
Water (riverbed)	8.61 kg (+1.09 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.

Contrary to myths, water does not block the magnetic field. 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)

*Warning: On a vertical wall, the magnet holds just a fraction of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) significantly limits the holding force.

3. Temperature resistance

*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) = 0.19

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

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: 020159-2026

Measurement Calculator

Force (pull)

Newtons (N)

Pounds (lbs)

Magnetic Induction

Induction (T)

Simply complete a single box, to let the calculator compute the rest instantly.

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Component MPL 40x20x4x2[7/3.5] / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 73.80 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating protects 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 40x20x4x2[7/3.5] / 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.

They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 7.52 kg), they are ideal as closers in furniture making and mounting elements in automation. 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. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

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

This model is characterized by dimensions 40x20x4 mm, which, at a weight of 24 g, makes it an element with high energy density. It is a magnetic block with dimensions 40x20x4 mm and a self-weight of 24 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of neodymium magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
They are noted for resistance to demagnetization induced by external magnetic fields,
A magnet with a metallic gold surface looks better,
Magnets exhibit extremely high magnetic induction on the active area,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Thanks to versatility in forming and the ability to modify to complex applications,
Key role in high-tech industry – they are utilized in computer drives, electromotive mechanisms, advanced medical instruments, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing threads and complex shapes in magnets, we propose using a housing - magnetic mount.
Possible danger related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

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

Information about lifting capacity is the result of a measurement for the most favorable conditions, including:

on a base made of mild steel, perfectly concentrating the magnetic flux
with a thickness no less than 10 mm
with an ideally smooth contact surface
under conditions of ideal adhesion (surface-to-surface)
during pulling in a direction vertical to the mounting surface
at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Please note that the magnet holding will differ influenced by elements below, in order of importance:

Distance – the presence of any layer (paint, tape, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
Heat – 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).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under shearing force the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the holding force.

Warnings

Protect data

Very strong magnetic fields can erase data on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Choking Hazard

Adult use only. Tiny parts can be swallowed, leading to serious injuries. Store out of reach of kids and pets.

Precision electronics

An intense magnetic field negatively affects the operation of magnetometers in phones and navigation systems. Keep magnets close to a device to prevent damaging the sensors.

ICD Warning

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

Operating temperature

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Warning for allergy sufferers

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or opt for versions in plastic housing.

Dust is flammable

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Caution required

Exercise caution. Rare earth magnets act from a long distance and connect with massive power, often quicker than you can move away.

Bodily injuries

Large magnets can smash fingers in a fraction of a second. Under no circumstances put your hand between two attracting surfaces.

Fragile material

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets will cause them cracking into shards.

Security! Looking for details? Read our article: Are neodymium magnets dangerous?

MPL 40x20x4x2[7/3.5] / N38 - lamellar magnet

Physical properties - MPL 40x20x4x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the product - technical parameters

Table 1: Static pull force (force vs gap) - interaction chart MPL 40x20x4x2[7/3.5] / N38

Table 2: Vertical capacity (wall) MPL 40x20x4x2[7/3.5] / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 40x20x4x2[7/3.5] / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 40x20x4x2[7/3.5] / N38

Table 5: Thermal stability (stability) - thermal limit MPL 40x20x4x2[7/3.5] / N38

Table 6: Two magnets (repulsion) - field range MPL 40x20x4x2[7/3.5] / N38

Table 7: Hazards (electronics) - precautionary measures MPL 40x20x4x2[7/3.5] / N38

Table 8: Impact energy (kinetic energy) - collision effects MPL 40x20x4x2[7/3.5] / N38

Table 9: Corrosion resistance MPL 40x20x4x2[7/3.5] / N38

Table 10: Construction data (Pc) MPL 40x20x4x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing) MPL 40x20x4x2[7/3.5] / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Temperature resistance

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

Material specification

Environmental data

Force (pull)

Magnetic Induction

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Pros and cons of neodymium magnets.

Benefits

Cons

Lifting parameters

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

Magnet lifting force in use – key factors

Warnings

Protect data

Choking Hazard

Precision electronics

ICD Warning

Operating temperature

Warning for allergy sufferers

Dust is flammable

Caution required

Bodily injuries

Fragile material

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MPL 40x20x4x2[7/3.5] / N38

Table 2: Vertical capacity (wall)
MPL 40x20x4x2[7/3.5] / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x20x4x2[7/3.5] / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x20x4x2[7/3.5] / N38

Table 5: Thermal stability (stability) - thermal limit
MPL 40x20x4x2[7/3.5] / N38

Table 6: Two magnets (repulsion) - field range
MPL 40x20x4x2[7/3.5] / N38

Table 7: Hazards (electronics) - precautionary measures
MPL 40x20x4x2[7/3.5] / N38

Table 8: Impact energy (kinetic energy) - collision effects
MPL 40x20x4x2[7/3.5] / N38

Table 9: Corrosion resistance
MPL 40x20x4x2[7/3.5] / N38

Table 10: Construction data (P_c)
MPL 40x20x4x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing)
MPL 40x20x4x2[7/3.5] / N38