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

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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

see technical data »

17.96 ZŁ with VAT / pcs + price for transport

14.60 ZŁ net + 23% VAT / pcs

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Detailed specification - 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 simulation of the assembly - technical parameters

These values constitute the outcome of a physical simulation. Values rely on algorithms for the class Nd₂Fe₁₄B. Operational performance may differ. Please consider these data as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - 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	weak grip
15 mm	455 Gs 45.5 mT	0.55 kg / 1.21 lbs 550.7 g / 5.4 N	weak grip
20 mm	288 Gs 28.8 mT	0.22 kg / 0.49 lbs 220.3 g / 2.2 N	weak grip
30 mm	129 Gs 12.9 mT	0.04 kg / 0.10 lbs 44.4 g / 0.4 N	weak grip
50 mm	38 Gs 3.8 mT	0.00 kg / 0.01 lbs 3.8 g / 0.0 N	weak grip

Magnetic force weakens drastically with every subsequent millimeter of distance. Note that every additional insulation layer (e.g., contamination, varnish, dust) noticeably diminishes the holding power. Magnetic products operate optimally at the point of direct contact; gap weakens the power. Notice how flashily the pull force drop, when the product does not adhere flatly to the steel surface. When planning the arrangement, avoid unnecessary gaps.

Table 2: Slippage hold (vertical surface)
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 shows the estimated holding capacity required to start the shifting of the magnet vertically on a upright steel wall (assuming typical friction coefficient). This parameter is a function of the air gap between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
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 holder on a vertical plane (e.g., a board), it will maintain barely about 1/5 of its nominal power. Gravity and a low friction coefficient mean that products slide down faster than they pop off the substrate. Designing a hanger? Consider that the sliding force is much weaker than the maximum static pull force. On a painted metal, the holder will slide down under a much lighter load. Utilizing a rubberized pad can effectively increase the grip.

Table 4: Steel thickness (saturation) - power losses
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 too thin steel is incapable of absorb the full magnetic flux, which squanders power of the holder. Should you mount a strong magnet to a weak sheet, the magnetism will pass right through and the holding will be smaller. To achieve 100% of this magnet's power, you need a suitably thick element of metal. The saturation phenomenon means that on thin elements (e.g., car bodies), the product holds weaker. We recommend selecting the steel thickness according to the table below.

Table 5: Thermal resistance (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 change their properties strength after exceeding the maximum temperature. Watch out for overheating – excessive heat can irreversibly destroy this magnet. With increasing heat, the neodymium's force temporarily drops. Avoid using this magnet in hot environments higher than its working range. Exceeding the critical threshold will result in irreversible degradation of magnetic properties.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently at lower temperatures than long magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (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 strong neodymiums interact from a much further distance than a magnet and steel combination. Such a system of two magnets produces a massive flux and a larger range of performance. Want to build a strong closure? Utilize two neodymiums instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still large.
*Flux density between like poles is approximately ~0 Gs at the geometric center of the gap (due to field cancellation).
Attention: Estimates demonstrate shear force of dual same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
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
Timepiece	20 Gs (2.0 mT)	6.5 cm
Mobile device	40 Gs (4.0 mT)	5.0 cm
Remote	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 is a real danger to electronic devices and pacemakers. These magnets produce a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation penetrates the body and glass. Exceptional care must be taken by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
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

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely speeds with massive force. Impact energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during mounting so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear eye protection when playing with powerful specimens.

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)

The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
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)

Flux value passing through the pole surface. Essential parameter in coil applications and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains merely ~20% of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. computer case) severely limits the holding force.

3. Thermal stability

*For N38 grade, the critical limit 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 specification and ecology

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

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Component MPL 40x20x4x2[7/3.5] / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 7.52 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 40x20x4x2[7/3.5] / 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 40x20x4 mm, which, at a weight of 24 g, makes it an element with high energy density. The key parameter here is the holding force amounting to approximately 7.52 kg (force ~73.80 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Advantages

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

They have unchanged lifting capacity, and over nearly ten years their attraction force decreases symbolically – ~1% (in testing),
They have excellent resistance to magnetism drop as a result of external fields,
A magnet with a smooth gold surface looks better,
Magnetic induction on the working layer of the magnet is exceptional,
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 flexibility in designing and the ability to adapt to unusual requirements,
Significant place in advanced technology sectors – they find application in mass storage devices, electric drive systems, diagnostic systems, also other advanced devices.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Weaknesses

What to avoid - cons of neodymium magnets: application proposals

Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only protects them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing nuts and complex shapes in magnets, we recommend using a housing - magnetic holder.
Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Additionally, small elements of these devices can complicate diagnosis medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

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

with the contact of a yoke made of low-carbon steel, guaranteeing maximum field concentration
with a thickness of at least 10 mm
with a plane perfectly flat
with total lack of distance (without coatings)
for force applied at a right angle (in the magnet axis)
in neutral thermal conditions

Key elements affecting lifting force

Bear in mind that the working load may be lower subject to the following factors, in order of importance:

Distance (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of maximum force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Chemical composition of the base – mild steel gives the best results. Higher carbon content lower magnetic properties and holding force.
Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Warnings

Avoid contact if allergic

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and choose coated magnets.

Fragile material

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Magnetic interference

Navigation devices and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

Pinching danger

Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Adults only

NdFeB magnets are not suitable for play. Eating a few magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and necessitates urgent medical intervention.

Combustion hazard

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.

Handling guide

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Life threat

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Maximum temperature

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Magnetic media

Do not bring magnets close to a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Danger! Looking for details? Check our post: Are neodymium magnets dangerous?

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the assembly - technical parameters

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

Table 2: Slippage hold (vertical surface) MPL 40x20x4x2[7/3.5] / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x20x4x2[7/3.5] / N38

Table 4: Steel thickness (saturation) - power losses MPL 40x20x4x2[7/3.5] / N38

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

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

Table 7: Safety (HSE) (implants) - warnings MPL 40x20x4x2[7/3.5] / N38

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

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

Table 10: Electrical data (Flux) MPL 40x20x4x2[7/3.5] / N38

Table 11: Physics of underwater searching MPL 40x20x4x2[7/3.5] / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Thermal stability

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

Material specification

Environmental data

Pulling force

Magnetic Field

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Strengths as well as weaknesses of rare earth magnets.

Advantages

Weaknesses

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

Key elements affecting lifting force

Warnings

Avoid contact if allergic

Fragile material

Magnetic interference

Pinching danger

Adults only

Combustion hazard

Handling guide

Life threat

Maximum temperature

Magnetic media

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage hold (vertical surface)
MPL 40x20x4x2[7/3.5] / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x20x4x2[7/3.5] / N38

Table 4: Steel thickness (saturation) - power losses
MPL 40x20x4x2[7/3.5] / N38

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

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

Table 7: Safety (HSE) (implants) - warnings
MPL 40x20x4x2[7/3.5] / N38

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

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

Table 10: Electrical data (Flux)
MPL 40x20x4x2[7/3.5] / N38

Table 11: Physics of underwater searching
MPL 40x20x4x2[7/3.5] / N38