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MPL 42x20x5 / 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 020163

GTIN/EAN: 5906301811695

5.00

length

42 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

31.5 g

Magnetization Direction

↑ axial

Load capacity

11.06 kg / 108.46 N

Magnetic Induction

203.37 mT / 2034 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

15.62 ZŁ with VAT / pcs + price for transport

12.70 ZŁ net + 23% VAT / pcs

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Technical details - MPL 42x20x5 / N38 - lamellar magnet

Specification / characteristics - MPL 42x20x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020163
GTIN/EAN	5906301811695
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	42 mm [±0,1 mm]
Width	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	31.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	11.06 kg / 108.46 N
Magnetic Induction ~ ?	203.37 mT / 2034 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 42x20x5 / 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 assembly - data

These information constitute the result of a engineering simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual conditions might slightly deviate from the simulation results. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - power drop
MPL 42x20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2033 Gs 203.3 mT	11.06 kg / 24.38 LBS 11060.0 g / 108.5 N	critical level
1 mm	1938 Gs 193.8 mT	10.05 kg / 22.15 LBS 10049.3 g / 98.6 N	critical level
2 mm	1823 Gs 182.3 mT	8.89 kg / 19.60 LBS 8888.2 g / 87.2 N	warning
3 mm	1696 Gs 169.6 mT	7.69 kg / 16.96 LBS 7691.7 g / 75.5 N	warning
5 mm	1433 Gs 143.3 mT	5.49 kg / 12.10 LBS 5490.3 g / 53.9 N	warning
10 mm	885 Gs 88.5 mT	2.09 kg / 4.62 LBS 2093.5 g / 20.5 N	warning
15 mm	547 Gs 54.7 mT	0.80 kg / 1.76 LBS 799.6 g / 7.8 N	low risk
20 mm	350 Gs 35.0 mT	0.33 kg / 0.72 LBS 327.0 g / 3.2 N	low risk
30 mm	160 Gs 16.0 mT	0.07 kg / 0.15 LBS 68.5 g / 0.7 N	low risk
50 mm	48 Gs 4.8 mT	0.01 kg / 0.01 LBS 6.2 g / 0.1 N	low risk

Magnetic force drops significantly with every mm of distance. Note that every additional insulation layer (e.g., contamination, paint, rust) strongly diminishes the holding power. Magnetic products hold most effectively in perfect adhesion; air break weakens the power. Observe how quickly the pull force drop, when the magnet does not adhere directly to the metal substrate. When calculating the assembly, avoid unnecessary gaps.

Table 2: Sliding capacity (vertical surface)
MPL 42x20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.21 kg / 4.88 LBS 2212.0 g / 21.7 N
1 mm	Stal (~0.2)	2.01 kg / 4.43 LBS 2010.0 g / 19.7 N
2 mm	Stal (~0.2)	1.78 kg / 3.92 LBS 1778.0 g / 17.4 N
3 mm	Stal (~0.2)	1.54 kg / 3.39 LBS 1538.0 g / 15.1 N
5 mm	Stal (~0.2)	1.10 kg / 2.42 LBS 1098.0 g / 10.8 N
10 mm	Stal (~0.2)	0.42 kg / 0.92 LBS 418.0 g / 4.1 N
15 mm	Stal (~0.2)	0.16 kg / 0.35 LBS 160.0 g / 1.6 N
20 mm	Stal (~0.2)	0.07 kg / 0.15 LBS 66.0 g / 0.6 N
30 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 14.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The following data indicates the estimated weight limit necessary to cause the downward movement of the magnet down against a vertical steel plate (assuming standard friction coefficient). This value depends on the distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 42x20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.32 kg / 7.31 LBS 3318.0 g / 32.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.21 kg / 4.88 LBS 2212.0 g / 21.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.11 kg / 2.44 LBS 1106.0 g / 10.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.53 kg / 12.19 LBS 5530.0 g / 54.2 N

When placing a element on a upright plane (e.g., a car body), it you can count on barely about 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that products slip easier than they pop off the substrate. Planning a wall mount? Consider that the shear force is much weaker than the maximum static pull force. On a smooth steel, the magnet will slide down under a much lighter cargo. Application of an anti-slip layer can effectively increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 42x20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.55 kg / 1.22 LBS 553.0 g / 5.4 N
1 mm	13%	1.38 kg / 3.05 LBS 1382.5 g / 13.6 N
2 mm	25%	2.77 kg / 6.10 LBS 2765.0 g / 27.1 N
3 mm	38%	4.15 kg / 9.14 LBS 4147.5 g / 40.7 N
5 mm	63%	6.91 kg / 15.24 LBS 6912.5 g / 67.8 N
10 mm	100%	11.06 kg / 24.38 LBS 11060.0 g / 108.5 N
11 mm	100%	11.06 kg / 24.38 LBS 11060.0 g / 108.5 N
12 mm	100%	11.06 kg / 24.38 LBS 11060.0 g / 108.5 N

A too thin steel is unable to absorb the entire magnetic field, which wastes potential of the magnet. Should you mount a strong magnet to a weak sheet, the magnetism will penetrate right through and the holding will be smaller. To squeeze 100% of this neodymium's power, you require a sufficiently solid piece of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the product works worse. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (stability) - power drop
MPL 42x20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	11.06 kg / 24.38 LBS 11060.0 g / 108.5 N	OK
40 °C	-2.2%	10.82 kg / 23.85 LBS 10816.7 g / 106.1 N	OK
60 °C	-4.4%	10.57 kg / 23.31 LBS 10573.4 g / 103.7 N
80 °C	-6.6%	10.33 kg / 22.77 LBS 10330.0 g / 101.3 N
100 °C	-28.8%	7.87 kg / 17.36 LBS 7874.7 g / 77.3 N

Standard neodymium magnets change their properties parameters above the temperature limit. Protect against heat – high temperature can irreversibly destroy this magnet. With every degree above norm, the magnet's force briefly decreases. Do not use this product near heat sources higher than its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Engineering note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 42x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	21.41 kg / 47.21 LBS 3 465 Gs	3.21 kg / 7.08 LBS 3212 g / 31.5 N	N/A
1 mm	20.49 kg / 45.17 LBS 3 978 Gs	3.07 kg / 6.78 LBS 3074 g / 30.2 N	18.44 kg / 40.66 LBS ~0 Gs
2 mm	19.46 kg / 42.89 LBS 3 877 Gs	2.92 kg / 6.43 LBS 2918 g / 28.6 N	17.51 kg / 38.60 LBS ~0 Gs
3 mm	18.35 kg / 40.46 LBS 3 765 Gs	2.75 kg / 6.07 LBS 2753 g / 27.0 N	16.52 kg / 36.41 LBS ~0 Gs
5 mm	16.05 kg / 35.38 LBS 3 521 Gs	2.41 kg / 5.31 LBS 2407 g / 23.6 N	14.44 kg / 31.84 LBS ~0 Gs
10 mm	10.63 kg / 23.43 LBS 2 865 Gs	1.59 kg / 3.52 LBS 1594 g / 15.6 N	9.57 kg / 21.09 LBS ~0 Gs
20 mm	4.05 kg / 8.94 LBS 1 769 Gs	0.61 kg / 1.34 LBS 608 g / 6.0 N	3.65 kg / 8.04 LBS ~0 Gs
50 mm	0.28 kg / 0.62 LBS 465 Gs	0.04 kg / 0.09 LBS 42 g / 0.4 N	0.25 kg / 0.55 LBS ~0 Gs
60 mm	0.13 kg / 0.29 LBS 320 Gs	0.02 kg / 0.04 LBS 20 g / 0.2 N	0.12 kg / 0.26 LBS ~0 Gs
70 mm	0.07 kg / 0.15 LBS 228 Gs	0.01 kg / 0.02 LBS 10 g / 0.1 N	0.06 kg / 0.13 LBS ~0 Gs
80 mm	0.04 kg / 0.08 LBS 167 Gs	0.01 kg / 0.01 LBS 5 g / 0.1 N	0.03 kg / 0.07 LBS ~0 Gs
90 mm	0.02 kg / 0.04 LBS 125 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
100 mm	0.01 kg / 0.03 LBS 96 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs

Two strong neodymiums attract each other from a significantly greater distance than a neodymium and metal combination. The setup of two magnets generates a stronger field and a wider radius of operation. Designing a solid fastener? Use a pair of magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the collision energy is extreme. The repulsion force is slightly lower than the attraction, but still impressive.
*Flux density between like poles is approximately ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
* Estimates show friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - warnings
MPL 42x20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	11.5 cm
Hearing aid	10 Gs (1.0 mT)	9.0 cm
Mechanical watch	20 Gs (2.0 mT)	7.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.5 cm
Car key	50 Gs (5.0 mT)	5.0 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 serious hazard to electronic devices as well as pacemakers. These magnets generate a field that destroys function of sensitive medical devices. Remember: the unseen radiation acts through matter and plastic. Exceptional care must be taken by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MPL 42x20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.01 km/h (5.84 m/s)	0.54 J
30 mm	32.86 km/h (9.13 m/s)	1.31 J
50 mm	42.27 km/h (11.74 m/s)	2.17 J
100 mm	59.76 km/h (16.60 m/s)	4.34 J

Neodymium magnets are delicate – a strong collision with metal risks their cracking. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can destroy the magnet or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Coating parameters (durability)
MPL 42x20x5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Flux)
MPL 42x20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	18 614 Mx	186.1 µWb
P_c Coefficient	0.23	Low (Flat)

Flux value passing through the pole surface. Essential parameter for generator designers as well as sensors. P_c value determines the magnet's operating point.

Table 11: Submerged application
MPL 42x20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	11.06 kg	Standard
Water (riverbed)	12.66 kg (+1.60 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Vertical hold

*Note: On a vertical wall, the magnet holds just ~20% of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.23

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: 020163-2026

Magnet Unit Converter

Force (pull)

Force (N)

Force in lbs

Magnetic Induction

Induction (Gs)

Type data into a field, to see all other values will recalculate in real-time.

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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 42x20x5 mm and a weight of 31.5 g, guarantees premium class connection. As a block magnet with high power (approx. 11.06 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 block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 11.06 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 42x20x5 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 11.06 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 42x20x5 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 42x20x5 / N38 model is magnetized axially (dimension 5 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 42x20x5 mm, which, at a weight of 31.5 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 42x20x5 mm and a self-weight of 31.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Pros and cons of rare earth magnets.

Benefits

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

Their magnetic field is durable, and after approximately 10 years it decreases only by ~1% (theoretically),
They maintain their magnetic properties even under close interference source,
The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
In view of the potential of precise shaping and customization to unique projects, neodymium magnets can be manufactured in a variety of forms and dimensions, which expands the range of possible applications,
Key role in modern technologies – they serve a role in mass storage devices, electromotive mechanisms, medical devices, also complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Cons

What to avoid - cons of neodymium magnets and proposals for their use:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
We suggest a housing - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex shapes.
Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these devices can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Detachment force of the magnet in optimal conditions – what contributes to it?

The lifting capacity listed is a measurement result executed under specific, ideal conditions:

on a block made of structural steel, perfectly concentrating the magnetic field
possessing a thickness of minimum 10 mm to ensure full flux closure
with a plane perfectly flat
under conditions of no distance (surface-to-surface)
for force acting at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Real force is affected by working environment parameters, including (from priority):

Clearance – the presence of foreign body (rust, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Steel thickness – insufficiently thick steel does not accept the full field, causing part of the power to be escaped into the air.
Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
Temperature influence – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Precautions when working with neodymium magnets

Cards and drives

Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

Implant safety

Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Do not drill into magnets

Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Safe operation

Use magnets consciously. Their huge power can shock even experienced users. Be vigilant and respect their force.

Permanent damage

Control the heat. Heating the magnet to high heat will destroy its properties and pulling force.

Compass and GPS

Navigation devices and mobile phones are extremely susceptible to magnetism. Close proximity with a strong magnet can decalibrate the internal compass in your phone.

This is not a toy

Neodymium magnets are not intended for children. Accidental ingestion of a few magnets can lead to them attracting across intestines, which poses a critical condition and necessitates immediate surgery.

Magnet fragility

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Hand protection

Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Sensitization to coating

Certain individuals suffer from a sensitization to nickel, which is the common plating for NdFeB magnets. Frequent touching might lead to a rash. We suggest wear safety gloves.

Warning! Learn more about hazards in the article: Magnet Safety Guide.

MPL 42x20x5 / N38 - lamellar magnet

Technical details - MPL 42x20x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - data

Table 1: Static force (force vs distance) - power drop MPL 42x20x5 / N38

Table 2: Sliding capacity (vertical surface) MPL 42x20x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 42x20x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 42x20x5 / N38

Table 5: Thermal stability (stability) - power drop MPL 42x20x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MPL 42x20x5 / N38

Table 7: Hazards (implants) - warnings MPL 42x20x5 / N38

Table 8: Dynamics (cracking risk) - warning MPL 42x20x5 / N38

Table 9: Coating parameters (durability) MPL 42x20x5 / N38

Table 10: Electrical data (Flux) MPL 42x20x5 / N38

Table 11: Submerged application MPL 42x20x5 / N38

1. Vertical hold

2. Plate thickness effect

3. Thermal stability

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

Material specification

Environmental data

Force (pull)

Magnetic Induction

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Pros and cons of rare earth magnets.

Benefits

Cons

Pull force analysis

Detachment force of the magnet in optimal conditions – what contributes to it?

Lifting capacity in real conditions – factors

Precautions when working with neodymium magnets

Cards and drives

Implant safety

Do not drill into magnets

Safe operation

Permanent damage

Compass and GPS

This is not a toy

Magnet fragility

Hand protection

Sensitization to coating

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - power drop
MPL 42x20x5 / N38

Table 2: Sliding capacity (vertical surface)
MPL 42x20x5 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 42x20x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 42x20x5 / N38

Table 5: Thermal stability (stability) - power drop
MPL 42x20x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 42x20x5 / N38

Table 7: Hazards (implants) - warnings
MPL 42x20x5 / N38

Table 8: Dynamics (cracking risk) - warning
MPL 42x20x5 / N38

Table 9: Coating parameters (durability)
MPL 42x20x5 / N38

Table 10: Electrical data (Flux)
MPL 42x20x5 / N38

Table 11: Submerged application
MPL 42x20x5 / N38