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

view properties »

17.96 ZŁ with VAT / pcs + price for transport

14.60 ZŁ net + 23% VAT / pcs

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Product card - 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 modeling of the assembly - report

Presented values represent the result of a engineering simulation. Results were calculated on models for the class Nd₂Fe₁₄B. Actual conditions may differ. Use these data as a supplementary guide for designers.

Table 1: Static force (force 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	warning
1 mm	1613 Gs 161.3 mT	6.91 kg / 15.24 LBS 6913.8 g / 67.8 N	warning
2 mm	1524 Gs 152.4 mT	6.17 kg / 13.61 LBS 6172.9 g / 60.6 N	warning
3 mm	1423 Gs 142.3 mT	5.38 kg / 11.86 LBS 5379.4 g / 52.8 N	warning
5 mm	1207 Gs 120.7 mT	3.87 kg / 8.53 LBS 3869.8 g / 38.0 N	warning
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

Pulling power decreases drastically with every mm of spacing. Keep in mind that even a microscopic distance (e.g., contamination, varnish, veneer) significantly diminishes the holding power. Neodymiums work strongest in perfect adhesion; gap weakens the power. Analyze how flashily the pull force drop, when the magnet does not touch flatly to the metal substrate. When calculating the assembly, avoid unnecessary gaps.

Table 2: Slippage load (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

This section indicates the estimated shear load necessary to initiate the sliding of the magnet down along a vertical steel plate (considering standard friction). The holding force is a function of the separation distance between the magnet and the surface.

Table 3: Vertical assembly (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 placing a element on a upright wall (e.g., a board), it will only hold just approx. 20%-30% of its nominal power. Gravity as well as a low friction coefficient influence the fact that products slide down faster than they pop off the substrate. Planning a wall mount? Remember that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the element will slip down under a much lighter cargo. Application of an anti-slip layer can effectively increase the grip.

Table 4: Material efficiency (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 thin sheet cannot focus the full magnetic flux, which weakens actual performance of the magnet. If you install a neodymium to a thin surface, the flux will pass right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you need a suitably thick element of metal. The material oversaturation causes that on thin elements (e.g., car bodies), the product shows lower pull force. We recommend selecting the steel cross-section from these parameters.

Table 5: Working in heat (material behavior) - 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 parameters past the thermal threshold. Protect against heat – high temperature can irreversibly damage this product. With increasing heat, the magnet's force briefly lowers. Refrain from using this magnet near heat sources higher than its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetic properties.

*Engineering note: Temperature resistance is determined by both grade, as well as the dimension ratios. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table points to permanent field degradation for this specific geometry.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral 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 magnetic products interact from a wider radius than a magnet and sheet combination. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of action. Planning to create a powerful holder? Apply two magnets instead of a neodymium and a steel. Remember that when bringing together two magnets, the pinch force is extreme. The levitation is slightly lower than the attraction, but still impressive.
*The magnetic induction in repulsion mode drops to ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Attention: Calculations show sliding force of two matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (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

A strong magnetic field is a real danger to IT equipment and medical implants. These NdFeB products generate a flux that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field acts through matter and plastic. Exceptional care must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - 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

NdFeB products are prone to chipping – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to skin. Always hold the magnet during bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Surface protection spec
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)

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

Table 10: Electrical data (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)

Total magnetic flux passing through the magnet pole. Key data for generator designers and motors. The P_c coefficient defines 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%

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

In water, the magnet feels stronger thanks to Archimedes' principle. 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 retains only a fraction of its perpendicular strength.

2. Plate thickness effect

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

3. Temperature resistance

*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) = 0.19

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 specification and ecology

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

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

Magnet Unit Converter

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Model MPL 40x20x4x2[7/3.5] / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. As a magnetic bar 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.

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 generators and material handling systems. Thanks to the flat surface and high force (approx. 7.52 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.

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).

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), 20 mm (width), and 4 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 7.52 kg (force ~73.80 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Pros

Apart from their strong magnetic energy, neodymium magnets have these key benefits:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
They are extremely resistant to demagnetization induced by external magnetic fields,
A magnet with a smooth nickel surface has better aesthetics,
Magnets possess impressive magnetic induction on the outer side,
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...
Possibility of individual creating and adjusting to individual applications,
Significant place in high-tech industry – they are used in magnetic memories, electric motors, medical equipment, also industrial machines.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Problematic aspects of neodymium magnets: application proposals

At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's 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
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited possibility of creating threads in the magnet and complicated shapes - preferred is cover - mounting mechanism.
Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these devices are able to disrupt the diagnostic process medical after entering the body.
Due to complex production process, their price is higher than average,

Holding force characteristics

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

Magnet power was determined for ideal contact conditions, assuming:

using a sheet made of mild steel, functioning as a circuit closing element
possessing a massiveness of minimum 10 mm to avoid saturation
with a surface cleaned and smooth
without the slightest air gap between the magnet and steel
for force applied at a right angle (in the magnet axis)
at standard ambient temperature

Practical lifting capacity: influencing factors

In practice, the real power depends on a number of factors, presented from most significant:

Distance – the presence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
Direction of force – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be wasted to the other side.
Steel type – mild steel gives the best results. Alloy admixtures reduce magnetic permeability and lifting capacity.
Plate texture – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was determined by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.

Safe handling of NdFeB magnets

Crushing risk

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Protective goggles

Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.

Electronic hazard

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Impact on smartphones

Note: rare earth magnets produce a field that disrupts precision electronics. Keep a separation from your mobile, device, and GPS.

Allergy Warning

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, avoid touching magnets with bare hands or select coated magnets.

Dust explosion hazard

Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.

Respect the power

Handle magnets consciously. Their immense force can shock even experienced users. Plan your moves and respect their force.

Life threat

For implant holders: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Choking Hazard

Absolutely store magnets away from children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are life-threatening.

Demagnetization risk

Control the heat. Heating the magnet to high heat will ruin its magnetic structure and strength.

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

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the assembly - report

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

Table 2: Slippage load (wall) MPL 40x20x4x2[7/3.5] / N38

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

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

Table 5: Working in heat (material behavior) - thermal limit MPL 40x20x4x2[7/3.5] / N38

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

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

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

Table 9: Surface protection spec MPL 40x20x4x2[7/3.5] / N38

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

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

1. Wall mount (shear)

2. Plate thickness effect

3. Temperature resistance

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

Elemental analysis

Sustainability

Force (pull)

Field Strength

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UI 39x9x7 [BA] - badge holder

FM Ruszt magnetyczny do leja fi 200 jednopoziomowy / N52 - magnetic filter

Advantages and disadvantages of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

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

Practical lifting capacity: influencing factors

Safe handling of NdFeB magnets

Crushing risk

Protective goggles

Electronic hazard

Impact on smartphones

Allergy Warning

Dust explosion hazard

Respect the power

Life threat

Choking Hazard

Demagnetization risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage load (wall)
MPL 40x20x4x2[7/3.5] / N38

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

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

Table 5: Working in heat (material behavior) - thermal limit
MPL 40x20x4x2[7/3.5] / N38

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

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

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

Table 9: Surface protection spec
MPL 40x20x4x2[7/3.5] / N38

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

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

Advantages and disadvantages of Nd₂Fe₁₄B magnets.