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MPL 30x20x5 / 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 020143

GTIN/EAN: 5906301811497

5.00

length

30 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

22.5 g

Magnetization Direction

↑ axial

Load capacity

8.86 kg / 86.90 N

Magnetic Induction

220.03 mT / 2200 Gs

Coating

[NiCuNi] Nickel

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Product card - MPL 30x20x5 / N38 - lamellar magnet

Specification / characteristics - MPL 30x20x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020143
GTIN/EAN	5906301811497
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	30 mm [±0,1 mm]
Width	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	22.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	8.86 kg / 86.90 N
Magnetic Induction ~ ?	220.03 mT / 2200 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x20x5 / 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 - technical parameters

These information represent the result of a mathematical simulation. Values are based on models for the class Nd₂Fe₁₄B. Operational conditions may deviate from the simulation results. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - characteristics
MPL 30x20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2200 Gs 220.0 mT	8.86 kg / 19.53 lbs 8860.0 g / 86.9 N	medium risk
1 mm	2092 Gs 209.2 mT	8.01 kg / 17.67 lbs 8013.9 g / 78.6 N	medium risk
2 mm	1961 Gs 196.1 mT	7.04 kg / 15.53 lbs 7042.1 g / 69.1 N	medium risk
3 mm	1817 Gs 181.7 mT	6.04 kg / 13.32 lbs 6041.8 g / 59.3 N	medium risk
5 mm	1516 Gs 151.6 mT	4.21 kg / 9.28 lbs 4209.6 g / 41.3 N	medium risk
10 mm	892 Gs 89.2 mT	1.46 kg / 3.21 lbs 1456.2 g / 14.3 N	weak grip
15 mm	519 Gs 51.9 mT	0.49 kg / 1.09 lbs 492.4 g / 4.8 N	weak grip
20 mm	313 Gs 31.3 mT	0.18 kg / 0.40 lbs 179.8 g / 1.8 N	weak grip
30 mm	132 Gs 13.2 mT	0.03 kg / 0.07 lbs 31.9 g / 0.3 N	weak grip
50 mm	37 Gs 3.7 mT	0.00 kg / 0.01 lbs 2.5 g / 0.0 N	weak grip

Magnetic force weakens significantly per each millimeter of gap. Keep in mind that even the smallest gap (e.g., dirt, paint, rust) significantly diminishes the holding power. Neodymiums hold optimally in perfect adhesion; gap nullifies the force. See how quickly the parameters fall, when the magnet does not adhere tightly to the steel surface. When planning the assembly, eliminate redundant distances.

Table 2: Shear load (wall)
MPL 30x20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.77 kg / 3.91 lbs 1772.0 g / 17.4 N
1 mm	Stal (~0.2)	1.60 kg / 3.53 lbs 1602.0 g / 15.7 N
2 mm	Stal (~0.2)	1.41 kg / 3.10 lbs 1408.0 g / 13.8 N
3 mm	Stal (~0.2)	1.21 kg / 2.66 lbs 1208.0 g / 11.9 N
5 mm	Stal (~0.2)	0.84 kg / 1.86 lbs 842.0 g / 8.3 N
10 mm	Stal (~0.2)	0.29 kg / 0.64 lbs 292.0 g / 2.9 N
15 mm	Stal (~0.2)	0.10 kg / 0.22 lbs 98.0 g / 1.0 N
20 mm	Stal (~0.2)	0.04 kg / 0.08 lbs 36.0 g / 0.4 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The table below calculates the approximate holding capacity required to cause the downward movement of the magnet down on a upright metal surface (assuming typical friction coefficient). This parameter is a function of the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MPL 30x20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.66 kg / 5.86 lbs 2658.0 g / 26.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.77 kg / 3.91 lbs 1772.0 g / 17.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.89 kg / 1.95 lbs 886.0 g / 8.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.43 kg / 9.77 lbs 4430.0 g / 43.5 N

When hanging a magnet on a upright plane (e.g., a car body), it will maintain only about 1/5 of its maximum pull force. Gravity and a low friction coefficient mean that magnets slip easier than they pull off. Designing a wall mount? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will slide down under a much lighter load. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 30x20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.89 kg / 1.95 lbs 886.0 g / 8.7 N
1 mm	25%	2.22 kg / 4.88 lbs 2215.0 g / 21.7 N
2 mm	50%	4.43 kg / 9.77 lbs 4430.0 g / 43.5 N
3 mm	75%	6.65 kg / 14.65 lbs 6645.0 g / 65.2 N
5 mm	100%	8.86 kg / 19.53 lbs 8860.0 g / 86.9 N
10 mm	100%	8.86 kg / 19.53 lbs 8860.0 g / 86.9 N
11 mm	100%	8.86 kg / 19.53 lbs 8860.0 g / 86.9 N
12 mm	100%	8.86 kg / 19.53 lbs 8860.0 g / 86.9 N

A thin metal plate cannot focus the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a weak sheet, the magnetism will pass right through and the attraction force will be weaker. To achieve the maximum of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation means that on delicate walls (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MPL 30x20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	8.86 kg / 19.53 lbs 8860.0 g / 86.9 N	OK
40 °C	-2.2%	8.67 kg / 19.10 lbs 8665.1 g / 85.0 N	OK
60 °C	-4.4%	8.47 kg / 18.67 lbs 8470.2 g / 83.1 N
80 °C	-6.6%	8.28 kg / 18.24 lbs 8275.2 g / 81.2 N
100 °C	-28.8%	6.31 kg / 13.91 lbs 6308.3 g / 61.9 N

Classic neodymiums irreversibly lose power after exceeding the maximum temperature. Protect against heat – heat can permanently damage this product. With increasing heat, the neodymium's force momentarily lowers. Avoid using this magnet close to ovens higher than its safe range. Too high temperature will lead to irreversible degradation of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Flat magnets (low Pc) risk losing magnetic properties sooner than long magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 30x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	17.90 kg / 39.47 lbs 3 715 Gs	2.69 kg / 5.92 lbs 2685 g / 26.3 N	N/A
1 mm	17.10 kg / 37.69 lbs 4 300 Gs	2.56 kg / 5.65 lbs 2565 g / 25.2 N	15.39 kg / 33.92 lbs ~0 Gs
2 mm	16.19 kg / 35.70 lbs 4 184 Gs	2.43 kg / 5.35 lbs 2429 g / 23.8 N	14.57 kg / 32.13 lbs ~0 Gs
3 mm	15.23 kg / 33.57 lbs 4 058 Gs	2.28 kg / 5.04 lbs 2284 g / 22.4 N	13.71 kg / 30.22 lbs ~0 Gs
5 mm	13.22 kg / 29.14 lbs 3 780 Gs	1.98 kg / 4.37 lbs 1982 g / 19.4 N	11.89 kg / 26.22 lbs ~0 Gs
10 mm	8.51 kg / 18.75 lbs 3 033 Gs	1.28 kg / 2.81 lbs 1276 g / 12.5 N	7.66 kg / 16.88 lbs ~0 Gs
20 mm	2.94 kg / 6.49 lbs 1 784 Gs	0.44 kg / 0.97 lbs 441 g / 4.3 N	2.65 kg / 5.84 lbs ~0 Gs
50 mm	0.15 kg / 0.32 lbs 398 Gs	0.02 kg / 0.05 lbs 22 g / 0.2 N	0.13 kg / 0.29 lbs ~0 Gs
60 mm	0.06 kg / 0.14 lbs 264 Gs	0.01 kg / 0.02 lbs 10 g / 0.1 N	0.06 kg / 0.13 lbs ~0 Gs
70 mm	0.03 kg / 0.07 lbs 183 Gs	0.00 kg / 0.01 lbs 5 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs
80 mm	0.02 kg / 0.04 lbs 131 Gs	0.00 kg / 0.01 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs
90 mm	0.01 kg / 0.02 lbs 97 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 73 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 steel setup. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of action. Planning to create a powerful holder? Utilize two neodymiums instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the impact force is huge. The repulsion force is a bit weaker than the connection force, but still significant.
*Flux density for N-N configuration reaches ~0 Gs at the geometric center of the gap (due to field cancellation).
* Estimates refer to sliding force of dual matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MPL 30x20x5 / 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
Mechanical watch	20 Gs (2.0 mT)	6.5 cm
Mobile device	40 Gs (4.0 mT)	5.0 cm
Car key	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

Powerful magnet radiation is a large risk to electronics and medical implants. These neodymiums generate a field that disrupts operation of digital equipment. Be aware: the unseen radiation passes through tissues and plastic. Exceptional care must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MPL 30x20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.97 km/h (6.10 m/s)	0.42 J
30 mm	34.74 km/h (9.65 m/s)	1.05 J
50 mm	44.76 km/h (12.43 m/s)	1.74 J
100 mm	63.29 km/h (17.58 m/s)	3.48 J

Magnetic elements are delicate – a violent impact against metal can result in shattering. Watch the impact speed – a magnet released freely speeds with massive force. Impact energy can cause material chips or injury to skin. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the neodymium. Use safety goggles when working with powerful specimens.

Table 9: Corrosion resistance
MPL 30x20x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MPL 30x20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	14 969 Mx	149.7 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux passing through the magnet pole. Key data in coil applications as well as sensors. P_c value defines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 30x20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	8.86 kg	Standard
Water (riverbed)	10.14 kg (+1.28 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

The magnetic field penetrates through water without any losses. 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)

*Note: On a vertical wall, the magnet retains merely approx. 20-30% of its nominal pull.

2. Steel saturation

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

3. Temperature resistance

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.26

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%

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: 020143-2026

Measurement Calculator

Magnet pull force

Kilograms (kg)

Newtons (N)

lbs

Magnetic Induction

Gauss (Gs)

Insert your figure into any field, and all other values convert on the fly.

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Component MPL 30x20x5 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 86.90 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures 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 30x20x5 / 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. 8.86 kg), they are ideal as closers 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 30x20x5 / N38, it is best to use two-component adhesives (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. 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 30x20x5 / N38 model is magnetized axially (dimension 5 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 (30x20 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

This model is characterized by dimensions 30x20x5 mm, which, at a weight of 22.5 g, makes it an element with high energy density. It is a magnetic block with dimensions 30x20x5 mm and a self-weight of 22.5 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of neodymium magnets.

Benefits

Apart from their consistent magnetism, neodymium magnets have these key benefits:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
They feature excellent resistance to weakening of magnetic properties due to external magnetic sources,
In other words, due to the aesthetic finish of gold, the element gains a professional look,
They feature high magnetic induction at the operating surface, which improves attraction properties,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to freedom in forming and the capacity to modify to individual projects,
Huge importance in high-tech industry – they are used in mass storage devices, drive modules, medical equipment, and multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in small systems

Weaknesses

Disadvantages of neodymium magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in creating nuts and complicated shapes in magnets, we propose using casing - magnetic mount.
Possible danger to health – tiny shards of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these magnets are able to complicate diagnosis medical when they are in the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Breakaway force was defined for the most favorable conditions, taking into account:

on a block made of structural steel, effectively closing the magnetic flux
with a thickness of at least 10 mm
characterized by even structure
under conditions of gap-free contact (metal-to-metal)
during pulling in a direction perpendicular to the mounting surface
at standard ambient temperature

Lifting capacity in real conditions – factors

It is worth knowing that the working load may be lower influenced by the following factors, in order of importance:

Gap (between the magnet and the plate), as even a tiny clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Plate material – low-carbon steel gives the best results. Alloy steels decrease magnetic permeability and lifting capacity.
Surface quality – the more even the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets

Pinching danger

Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Respect the power

Be careful. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can react.

Do not give to children

NdFeB magnets are not intended for children. Eating several magnets may result in them attracting across intestines, which poses a direct threat to life and necessitates urgent medical intervention.

Allergic reactions

Studies show that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, prevent touching magnets with bare hands and select versions in plastic housing.

Magnets are brittle

NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets will cause them shattering into shards.

Pacemakers

For implant holders: Strong magnetic fields disrupt medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.

Do not overheat magnets

Do not overheat. NdFeB magnets are susceptible to heat. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Do not drill into magnets

Machining of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

GPS Danger

A powerful magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.

Electronic devices

Do not bring magnets near a wallet, computer, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Warning! Looking for details? Read our article: Why are neodymium magnets dangerous?

MPL 30x20x5 / N38 - lamellar magnet

Product card - MPL 30x20x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - technical parameters

Table 1: Static pull force (pull vs gap) - characteristics MPL 30x20x5 / N38

Table 2: Shear load (wall) MPL 30x20x5 / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 30x20x5 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 30x20x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MPL 30x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MPL 30x20x5 / N38

Table 7: Protective zones (implants) - warnings MPL 30x20x5 / N38

Table 8: Impact energy (kinetic energy) - warning MPL 30x20x5 / N38

Table 9: Corrosion resistance MPL 30x20x5 / N38

Table 10: Construction data (Flux) MPL 30x20x5 / N38

Table 11: Physics of underwater searching MPL 30x20x5 / N38

1. Wall mount (shear)

2. Steel saturation

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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Pros and cons of neodymium magnets.

Benefits

Weaknesses

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Lifting capacity in real conditions – factors

H&S for magnets

Pinching danger

Respect the power

Do not give to children

Allergic reactions

Magnets are brittle

Pacemakers

Do not overheat magnets

Do not drill into magnets

GPS Danger

Electronic devices

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MPL 30x20x5 / N38

Table 2: Shear load (wall)
MPL 30x20x5 / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 30x20x5 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 30x20x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MPL 30x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 30x20x5 / N38

Table 7: Protective zones (implants) - warnings
MPL 30x20x5 / N38

Table 8: Impact energy (kinetic energy) - warning
MPL 30x20x5 / N38

Table 9: Corrosion resistance
MPL 30x20x5 / N38

Table 10: Construction data (Flux)
MPL 30x20x5 / N38

Table 11: Physics of underwater searching
MPL 30x20x5 / N38