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MPL 20x5x3 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

lamellar magnet

Catalog no 020131

GTIN/EAN: 5906301811374

5.00

length

20 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

2.25 g

Magnetization Direction

↑ axial

Load capacity

3.46 kg / 33.93 N

Magnetic Induction

358.88 mT / 3589 Gs

Coating

[NiCuNi] Nickel

view properties »

1.058 ZŁ with VAT / pcs + price for transport

0.860 ZŁ net + 23% VAT / pcs

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Detailed specification - MPL 20x5x3 / N38 - lamellar magnet

Specification / characteristics - MPL 20x5x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020131
GTIN/EAN	5906301811374
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	20 mm [±0,1 mm]
Width	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	2.25 g
Magnetization Direction	↑ axial
Load capacity ~ ?	3.46 kg / 33.93 N
Magnetic Induction ~ ?	358.88 mT / 3589 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x5x3 / 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

Physical modeling of the assembly - technical parameters

These information are the outcome of a engineering calculation. Results rely on algorithms for the class Nd₂Fe₁₄B. Actual conditions might slightly differ. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
MPL 20x5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3585 Gs 358.5 mT	3.46 kg / 7.63 pounds 3460.0 g / 33.9 N	strong
1 mm	2619 Gs 261.9 mT	1.85 kg / 4.07 pounds 1846.6 g / 18.1 N	weak grip
2 mm	1818 Gs 181.8 mT	0.89 kg / 1.96 pounds 889.8 g / 8.7 N	weak grip
3 mm	1279 Gs 127.9 mT	0.44 kg / 0.97 pounds 440.2 g / 4.3 N	weak grip
5 mm	696 Gs 69.6 mT	0.13 kg / 0.29 pounds 130.6 g / 1.3 N	weak grip
10 mm	225 Gs 22.5 mT	0.01 kg / 0.03 pounds 13.6 g / 0.1 N	weak grip
15 mm	97 Gs 9.7 mT	0.00 kg / 0.01 pounds 2.5 g / 0.0 N	weak grip
20 mm	49 Gs 4.9 mT	0.00 kg / 0.00 pounds 0.6 g / 0.0 N	weak grip
30 mm	17 Gs 1.7 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	weak grip
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Grip strength weakens drastically per each millimeter of gap. Note that even a very thin break (e.g., dirt, paint, dust) strongly reduces the pull force. Magnets work strongest during direct contact; distance nullifies the force. Notice how rapidly the pull force fall, when the magnet does not touch directly to the steel surface. When calculating the assembly, avoid additional spacers.

Table 2: Sliding capacity (vertical surface)
MPL 20x5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.69 kg / 1.53 pounds 692.0 g / 6.8 N
1 mm	Stal (~0.2)	0.37 kg / 0.82 pounds 370.0 g / 3.6 N
2 mm	Stal (~0.2)	0.18 kg / 0.39 pounds 178.0 g / 1.7 N
3 mm	Stal (~0.2)	0.09 kg / 0.19 pounds 88.0 g / 0.9 N
5 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 26.0 g / 0.3 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data shows the theoretical shear load required to cause the sliding of the magnet vertically on a upright steel plate (considering standard friction). This parameter is a function of the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MPL 20x5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.04 kg / 2.29 pounds 1038.0 g / 10.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.69 kg / 1.53 pounds 692.0 g / 6.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.35 kg / 0.76 pounds 346.0 g / 3.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.73 kg / 3.81 pounds 1730.0 g / 17.0 N

When hanging a element on a upright plane (e.g., a board), it will maintain barely approx. 1/5 of its maximum pull force. Gravity and a low friction coefficient influence the fact that magnets slip faster than they pull off. Want to create a vertical fastening? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the magnet will slide down under a noticeably lighter load. Utilizing a rubberized layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 20x5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.35 kg / 0.76 pounds 346.0 g / 3.4 N
1 mm	25%	0.87 kg / 1.91 pounds 865.0 g / 8.5 N
2 mm	50%	1.73 kg / 3.81 pounds 1730.0 g / 17.0 N
3 mm	75%	2.59 kg / 5.72 pounds 2595.0 g / 25.5 N
5 mm	100%	3.46 kg / 7.63 pounds 3460.0 g / 33.9 N
10 mm	100%	3.46 kg / 7.63 pounds 3460.0 g / 33.9 N
11 mm	100%	3.46 kg / 7.63 pounds 3460.0 g / 33.9 N
12 mm	100%	3.46 kg / 7.63 pounds 3460.0 g / 33.9 N

A thin sheet is not enough to focus the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a weak sheet, the field will penetrate right through and the attraction force will be weaker. To squeeze full efficiency of this magnet's potential, you require a sufficiently solid piece of steel. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the holder shows lower pull force. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal resistance (stability) - power drop
MPL 20x5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	3.46 kg / 7.63 pounds 3460.0 g / 33.9 N	OK
40 °C	-2.2%	3.38 kg / 7.46 pounds 3383.9 g / 33.2 N	OK
60 °C	-4.4%	3.31 kg / 7.29 pounds 3307.8 g / 32.4 N
80 °C	-6.6%	3.23 kg / 7.12 pounds 3231.6 g / 31.7 N
100 °C	-28.8%	2.46 kg / 5.43 pounds 2463.5 g / 24.2 N

Ordinary NdFeB products lose strength above the temperature limit. Avoid high temperatures – high temperature can irreversibly destroy this magnet. As the temperature rises, the neodymium's power temporarily decreases. Avoid using this magnet near heat sources higher than its working range. Too high temperature will lead to destruction of magnetic properties.

*Engineering note: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (pancake types) are more susceptible to demagnetization sooner compared to rod magnets. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 20x5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	7.92 kg / 17.47 pounds 4 860 Gs	1.19 kg / 2.62 pounds 1189 g / 11.7 N	N/A
1 mm	5.94 kg / 13.10 pounds 6 209 Gs	0.89 kg / 1.97 pounds 891 g / 8.7 N	5.35 kg / 11.79 pounds ~0 Gs
2 mm	4.23 kg / 9.32 pounds 5 238 Gs	0.63 kg / 1.40 pounds 634 g / 6.2 N	3.81 kg / 8.39 pounds ~0 Gs
3 mm	2.94 kg / 6.49 pounds 4 369 Gs	0.44 kg / 0.97 pounds 441 g / 4.3 N	2.65 kg / 5.84 pounds ~0 Gs
5 mm	1.42 kg / 3.14 pounds 3 039 Gs	0.21 kg / 0.47 pounds 213 g / 2.1 N	1.28 kg / 2.82 pounds ~0 Gs
10 mm	0.30 kg / 0.66 pounds 1 393 Gs	0.04 kg / 0.10 pounds 45 g / 0.4 N	0.27 kg / 0.59 pounds ~0 Gs
20 mm	0.03 kg / 0.07 pounds 450 Gs	0.00 kg / 0.01 pounds 5 g / 0.0 N	0.03 kg / 0.06 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 56 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 34 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 23 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 16 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 11 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 8 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products interact from a much further distance than a neodymium and metal combination. Such a system of magnet-to-magnet generates a stronger field and a larger range of operation. Designing a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still significant.
*Field value between like poles drops to ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Important: Results apply to sliding force of two identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - precautionary measures
MPL 20x5x3 / N38

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

Extremely neodym field is a serious hazard to electronic devices and medical implants. These neodymiums produce a field that destroys function of sensitive medical devices. Be aware: the unseen radiation penetrates the body and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MPL 20x5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	39.65 km/h (11.01 m/s)	0.14 J
30 mm	68.50 km/h (19.03 m/s)	0.41 J
50 mm	88.43 km/h (24.56 m/s)	0.68 J
100 mm	125.06 km/h (34.74 m/s)	1.36 J

Magnetic elements are prone to chipping – a collision with steel can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Kinetic force can destroy the magnet or injury to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Surface protection spec
MPL 20x5x3 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (P_c)
MPL 20x5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 197 Mx	32.0 µWb
P_c Coefficient	0.36	Low (Flat)

Total magnetic flux emitted by the magnet pole. Key data when building generators and motors. P_c value defines the magnet's operating point.

Table 11: Submerged application
MPL 20x5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	3.46 kg	Standard
Water (riverbed)	3.96 kg (+0.50 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!

The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Warning: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

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

3. Power loss vs temp

*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) = 0.36

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

Chemical composition

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: 020131-2026

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MPL 30x20x4 / N38 - lamellar magnet

10.23 ZŁ brutto / pcs

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 20x5x3 mm and a weight of 2.25 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 3.46 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. Watch your fingers! Magnets with a force of 3.46 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 20x5x3 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 20x5x3 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 20x5x3 / 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. In practice, this means that this magnet has the greatest attraction force on its main planes (20x5 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

The presented product is a neodymium magnet with precisely defined parameters: 20 mm (length), 5 mm (width), and 3 mm (thickness). It is a magnetic block with dimensions 20x5x3 mm and a self-weight of 2.25 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages as well as disadvantages of neodymium magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
Neodymium magnets are characterized by highly resistant to magnetic field loss caused by magnetic disturbances,
In other words, due to the glossy layer of nickel, the element gains visual value,
Neodymium magnets achieve maximum magnetic induction on a their surface, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Possibility of detailed modeling as well as optimizing to concrete needs,
Fundamental importance in modern industrial fields – they are utilized in data components, electric motors, diagnostic systems, and technologically advanced constructions.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Weaknesses

Cons of neodymium magnets and ways of using them

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
We suggest cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated shapes.
Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these magnets can disrupt the diagnostic process medical after entering the body.
With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

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

The lifting capacity listed is a measurement result conducted under standard conditions:

with the application of a sheet made of special test steel, ensuring maximum field concentration
whose transverse dimension is min. 10 mm
with an polished touching surface
with total lack of distance (without impurities)
during pulling in a direction perpendicular to the plane
in neutral thermal conditions

Determinants of practical lifting force of a magnet

Effective lifting capacity is affected by working environment parameters, such as (from priority):

Gap (betwixt the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Metal type – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of NdFeB magnets

Compass and GPS

Remember: rare earth magnets generate a field that confuses precision electronics. Maintain a separation from your phone, tablet, and navigation systems.

Do not give to children

Neodymium magnets are not toys. Swallowing several magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and necessitates immediate surgery.

Heat sensitivity

Keep cool. NdFeB magnets are susceptible to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Safe operation

Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Data carriers

Do not bring magnets near a purse, laptop, or TV. The magnetism can destroy these devices and erase data from cards.

Material brittleness

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

Bone fractures

Big blocks can smash fingers instantly. Never place your hand between two attracting surfaces.

Machining danger

Fire hazard: Rare earth powder is highly flammable. Do not process magnets in home conditions as this may cause fire.

Health Danger

Individuals with a pacemaker have to keep an large gap from magnets. The magnetic field can stop the functioning of the implant.

Nickel coating and allergies

Studies show that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, refrain from direct skin contact or choose versions in plastic housing.

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

MPL 20x5x3 / N38 - lamellar magnet

Detailed specification - MPL 20x5x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - technical parameters

Table 1: Static pull force (force vs distance) - interaction chart MPL 20x5x3 / N38

Table 2: Sliding capacity (vertical surface) MPL 20x5x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull MPL 20x5x3 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 20x5x3 / N38

Table 5: Thermal resistance (stability) - power drop MPL 20x5x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MPL 20x5x3 / N38

Table 7: Protective zones (electronics) - precautionary measures MPL 20x5x3 / N38

Table 8: Collisions (kinetic energy) - warning MPL 20x5x3 / N38

Table 9: Surface protection spec MPL 20x5x3 / N38

Table 10: Electrical data (Pc) MPL 20x5x3 / N38

Table 11: Submerged application MPL 20x5x3 / N38

1. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Chemical composition

Environmental data

Magnet pull force

Field Strength

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MPL 30x20x4 / N38 - lamellar magnet

Advantages as well as disadvantages of neodymium magnets.

Advantages

Weaknesses

Pull force analysis

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

Determinants of practical lifting force of a magnet

Safe handling of NdFeB magnets

Compass and GPS

Do not give to children

Heat sensitivity

Safe operation

Data carriers

Material brittleness

Bone fractures

Machining danger

Health Danger

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - interaction chart
MPL 20x5x3 / N38

Table 2: Sliding capacity (vertical surface)
MPL 20x5x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MPL 20x5x3 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 20x5x3 / N38

Table 5: Thermal resistance (stability) - power drop
MPL 20x5x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 20x5x3 / N38

Table 7: Protective zones (electronics) - precautionary measures
MPL 20x5x3 / N38

Table 8: Collisions (kinetic energy) - warning
MPL 20x5x3 / N38

Table 9: Surface protection spec
MPL 20x5x3 / N38

Table 10: Electrical data (P_c)
MPL 20x5x3 / N38

Table 11: Submerged application
MPL 20x5x3 / N38