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MPL 40x5x3 / 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 020402

GTIN/EAN: 5906301811916

length

40 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

4.5 g

Magnetization Direction

↑ axial

Load capacity

7.33 kg / 71.91 N

Magnetic Induction

348.83 mT / 3488 Gs

Coating

[NiCuNi] Nickel

view technical data »

6.65 ZŁ with VAT / pcs + price for transport

5.41 ZŁ net + 23% VAT / pcs

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Detailed specification - MPL 40x5x3 / N38 - lamellar magnet

Specification / characteristics - MPL 40x5x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020402
GTIN/EAN	5906301811916
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	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	4.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.33 kg / 71.91 N
Magnetic Induction ~ ?	348.83 mT / 3488 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x5x3 / 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 magnet - technical parameters

The following data constitute the direct effect of a physical analysis. Values were calculated on models for the class Nd₂Fe₁₄B. Operational conditions may differ. Please consider these data as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - characteristics
MPL 40x5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3485 Gs 348.5 mT	7.33 kg / 16.16 LBS 7330.0 g / 71.9 N	medium risk
1 mm	2529 Gs 252.9 mT	3.86 kg / 8.51 LBS 3859.9 g / 37.9 N	medium risk
2 mm	1741 Gs 174.1 mT	1.83 kg / 4.03 LBS 1829.7 g / 17.9 N	low risk
3 mm	1217 Gs 121.7 mT	0.89 kg / 1.97 LBS 893.7 g / 8.8 N	low risk
5 mm	664 Gs 66.4 mT	0.27 kg / 0.59 LBS 265.9 g / 2.6 N	low risk
10 mm	235 Gs 23.5 mT	0.03 kg / 0.07 LBS 33.5 g / 0.3 N	low risk
15 mm	116 Gs 11.6 mT	0.01 kg / 0.02 LBS 8.2 g / 0.1 N	low risk
20 mm	67 Gs 6.7 mT	0.00 kg / 0.01 LBS 2.7 g / 0.0 N	low risk
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 LBS 0.5 g / 0.0 N	low risk
50 mm	8 Gs 0.8 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Grip strength decreases drastically per each millimeter of distance. Keep in mind that every additional insulation layer (e.g., dirt, varnish, rust) noticeably weakens the grip. Magnets operate optimally during direct contact; distance drastically cuts the force. Analyze how quickly the pull force drop, when the product does not touch flatly to the metal substrate. When planning the mounting, avoid additional spacers.

Table 2: Shear load (vertical surface)
MPL 40x5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.47 kg / 3.23 LBS 1466.0 g / 14.4 N
1 mm	Stal (~0.2)	0.77 kg / 1.70 LBS 772.0 g / 7.6 N
2 mm	Stal (~0.2)	0.37 kg / 0.81 LBS 366.0 g / 3.6 N
3 mm	Stal (~0.2)	0.18 kg / 0.39 LBS 178.0 g / 1.7 N
5 mm	Stal (~0.2)	0.05 kg / 0.12 LBS 54.0 g / 0.5 N
10 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The table below presents the theoretical shear load needed to initiate the shifting of the magnet down against a upright steel wall (assuming typical friction). This parameter is a function of the gap size between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MPL 40x5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.20 kg / 4.85 LBS 2199.0 g / 21.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.47 kg / 3.23 LBS 1466.0 g / 14.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.62 LBS 733.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.67 kg / 8.08 LBS 3665.0 g / 36.0 N

When mounting a magnet on a upright wall (e.g., a car body), it will only hold barely about 1/5 of its maximum pull force. Gravitational force as well as a low friction coefficient cause that magnets slip easier than they pop off the substrate. Designing a vertical fastening? Note that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the element will slide down under a significantly smaller weight. Application of an anti-slip pad can significantly raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.73 kg / 1.62 LBS 733.0 g / 7.2 N
1 mm	25%	1.83 kg / 4.04 LBS 1832.5 g / 18.0 N
2 mm	50%	3.67 kg / 8.08 LBS 3665.0 g / 36.0 N
3 mm	75%	5.50 kg / 12.12 LBS 5497.5 g / 53.9 N
5 mm	100%	7.33 kg / 16.16 LBS 7330.0 g / 71.9 N
10 mm	100%	7.33 kg / 16.16 LBS 7330.0 g / 71.9 N
11 mm	100%	7.33 kg / 16.16 LBS 7330.0 g / 71.9 N
12 mm	100%	7.33 kg / 16.16 LBS 7330.0 g / 71.9 N

A thin metal plate cannot absorb the entire magnetic field, which wastes potential of the holder. Should you mount a strong magnet to a thin surface, the flux will pass right through and the pull force will drop sharply. To achieve 100% of this magnet's potential, you require a sufficiently solid piece of steel. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the magnet shows lower pull force. We advise picking the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - power drop
MPL 40x5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.33 kg / 16.16 LBS 7330.0 g / 71.9 N	OK
40 °C	-2.2%	7.17 kg / 15.80 LBS 7168.7 g / 70.3 N	OK
60 °C	-4.4%	7.01 kg / 15.45 LBS 7007.5 g / 68.7 N
80 °C	-6.6%	6.85 kg / 15.09 LBS 6846.2 g / 67.2 N
100 °C	-28.8%	5.22 kg / 11.51 LBS 5219.0 g / 51.2 N

Classic neodymiums lose strength past the thermal threshold. Watch out for overheating – high temperature can permanently destroy this magnet. With increasing heat, the neodymium's power momentarily lowers. Do not use this magnet close to heaters higher than its safe range. Exceeding the critical threshold will result in destruction of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than long magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MPL 40x5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	14.97 kg / 33.01 LBS 4 697 Gs	2.25 kg / 4.95 LBS 2246 g / 22.0 N	N/A
1 mm	11.16 kg / 24.61 LBS 6 017 Gs	1.67 kg / 3.69 LBS 1674 g / 16.4 N	10.04 kg / 22.15 LBS ~0 Gs
2 mm	7.88 kg / 17.38 LBS 5 058 Gs	1.18 kg / 2.61 LBS 1183 g / 11.6 N	7.10 kg / 15.64 LBS ~0 Gs
3 mm	5.44 kg / 11.99 LBS 4 201 Gs	0.82 kg / 1.80 LBS 816 g / 8.0 N	4.90 kg / 10.79 LBS ~0 Gs
5 mm	2.59 kg / 5.71 LBS 2 899 Gs	0.39 kg / 0.86 LBS 389 g / 3.8 N	2.33 kg / 5.14 LBS ~0 Gs
10 mm	0.54 kg / 1.20 LBS 1 328 Gs	0.08 kg / 0.18 LBS 81 g / 0.8 N	0.49 kg / 1.08 LBS ~0 Gs
20 mm	0.07 kg / 0.15 LBS 471 Gs	0.01 kg / 0.02 LBS 10 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 83 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 55 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 38 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 27 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 20 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 15 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and steel combination. Such a system of two magnets creates a more powerful interaction and a further horizon of operation. Want to build a solid fastener? Apply two magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the pinch force is huge. The levitation is slightly lower than the attraction, but still impressive.
*The magnetic induction for N-N configuration reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Results apply to shear force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - warnings
MPL 40x5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a serious hazard to IT equipment and medical implants. These neodymiums produce a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation acts through matter and glass. Increased vigilance must be exercised by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MPL 40x5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	40.82 km/h (11.34 m/s)	0.29 J
30 mm	70.50 km/h (19.58 m/s)	0.86 J
50 mm	91.02 km/h (25.28 m/s)	1.44 J
100 mm	128.71 km/h (35.75 m/s)	2.88 J

Magnetic elements are very brittle – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can cause material chips or painful pinches to skin. Be sure to control the product during installation 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 handling with powerful specimens.

Table 9: Surface protection spec
MPL 40x5x3 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (P_c)
MPL 40x5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 123 Mx	51.2 µWb
P_c Coefficient	0.27	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data for generator designers and motors. The P_c coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	7.33 kg	Standard
Water (riverbed)	8.39 kg (+1.06 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Caution: On a vertical wall, the magnet holds just ~20% of its perpendicular strength.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Temperature resistance

*For standard magnets, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.27

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%

Ecology and recycling (GPSR)

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: 020402-2026

Measurement Calculator

Pulling force

Kilograms (kg)

Newtons (N)

lbs

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Induction (Gs)

Simply fill in a single box, to let the calculator calculate everything else for you.

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 40x5x3 mm and a weight of 4.5 g, guarantees the highest quality connection. This magnetic block with a force of 71.91 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 shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 40x5x3 / 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. 7.33 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).

Standardly, the MPL 40x5x3 / N38 model is magnetized through the thickness (dimension 3 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. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 40x5x3 mm, which, at a weight of 4.5 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 40x5x3 mm and a self-weight of 4.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They retain attractive force for around ten years – the loss is just ~1% (based on simulations),
They do not lose their magnetic properties even under external field action,
Thanks to the metallic finish, the layer of nickel, gold, or silver-plated gives an visually attractive appearance,
Neodymium magnets generate maximum magnetic induction on a contact point, which increases force concentration,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of detailed shaping and optimizing to concrete applications,
Key role in innovative solutions – they find application in magnetic memories, electric motors, medical equipment, and technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Drawbacks and weaknesses of neodymium magnets and ways of using them

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power 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
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
We suggest a housing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex forms.
Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets can be problematic in diagnostics medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Holding force of 7.33 kg is a measurement result performed under specific, ideal conditions:

on a base made of structural steel, perfectly concentrating the magnetic field
with a thickness no less than 10 mm
with a surface free of scratches
with zero gap (without paint)
for force acting at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

In real-world applications, the actual lifting capacity is determined by many variables, listed from crucial:

Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Angle of force application – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
Base massiveness – too thin sheet does not accept the full field, causing part of the power to be wasted to the other side.
Chemical composition of the base – mild steel gives the best results. Alloy steels lower magnetic permeability and holding force.
Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under shearing force the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Precautions when working with neodymium magnets

Heat sensitivity

Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

Adults only

Neodymium magnets are not suitable for play. Swallowing a few magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.

Warning for heart patients

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Machining danger

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Beware of splinters

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets will cause them shattering into small pieces.

Bone fractures

Pinching hazard: The attraction force is so great that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Handling guide

Before starting, read the rules. Sudden snapping can break the magnet or hurt your hand. Be predictive.

Phone sensors

Navigation devices and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can ruin the internal compass in your phone.

Metal Allergy

Certain individuals have a sensitization to nickel, which is the standard coating for neodymium magnets. Frequent touching can result in an allergic reaction. We recommend wear safety gloves.

Keep away from computers

Do not bring magnets near a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Caution! Details about risks in the article: Safety of working with magnets.

MPL 40x5x3 / N38 - lamellar magnet

Detailed specification - MPL 40x5x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the magnet - technical parameters

Table 1: Static pull force (force vs gap) - characteristics MPL 40x5x3 / N38

Table 2: Shear load (vertical surface) MPL 40x5x3 / N38

Table 3: Wall mounting (sliding) - vertical pull MPL 40x5x3 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 40x5x3 / N38

Table 5: Thermal stability (stability) - power drop MPL 40x5x3 / N38

Table 6: Two magnets (repulsion) - forces in the system MPL 40x5x3 / N38

Table 7: Hazards (electronics) - warnings MPL 40x5x3 / N38

Table 8: Dynamics (kinetic energy) - collision effects MPL 40x5x3 / N38

Table 9: Surface protection spec MPL 40x5x3 / N38

Table 10: Electrical data (Pc) MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy MPL 40x5x3 / N38

1. Shear force

2. Efficiency vs thickness

3. Temperature resistance

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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Field Strength

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Pros as well as cons of Nd2Fe14B magnets.

Strengths

Cons

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Magnet lifting force in use – key factors

Precautions when working with neodymium magnets

Heat sensitivity

Adults only

Warning for heart patients

Machining danger

Beware of splinters

Bone fractures

Handling guide

Phone sensors

Metal Allergy

Keep away from computers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MPL 40x5x3 / N38

Table 2: Shear load (vertical surface)
MPL 40x5x3 / N38

Table 3: Wall mounting (sliding) - vertical pull
MPL 40x5x3 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x5x3 / N38

Table 5: Thermal stability (stability) - power drop
MPL 40x5x3 / N38

Table 6: Two magnets (repulsion) - forces in the system
MPL 40x5x3 / N38

Table 7: Hazards (electronics) - warnings
MPL 40x5x3 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MPL 40x5x3 / N38

Table 9: Surface protection spec
MPL 40x5x3 / N38

Table 10: Electrical data (P_c)
MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.