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MPL 30x20x4 / 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 020286

GTIN/EAN: 5906301811848

length

30 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

18 g

Magnetization Direction

↑ axial

Load capacity

6.30 kg / 61.84 N

Magnetic Induction

180.57 mT / 1806 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

10.23 ZŁ with VAT / pcs + price for transport

8.32 ZŁ net + 23% VAT / pcs

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Physical properties - MPL 30x20x4 / N38 - lamellar magnet

Specification / characteristics - MPL 30x20x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020286
GTIN/EAN	5906301811848
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	4 mm [±0,1 mm]
Weight	18 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.30 kg / 61.84 N
Magnetic Induction ~ ?	180.57 mT / 1806 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x20x4 / 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 simulation of the magnet - technical parameters

Presented information are the result of a engineering analysis. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Actual performance might slightly deviate from the simulation results. Use these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - power drop
MPL 30x20x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1805 Gs 180.5 mT	6.30 kg / 13.89 LBS 6300.0 g / 61.8 N	medium risk
1 mm	1728 Gs 172.8 mT	5.77 kg / 12.72 LBS 5771.5 g / 56.6 N	medium risk
2 mm	1628 Gs 162.8 mT	5.13 kg / 11.30 LBS 5125.7 g / 50.3 N	medium risk
3 mm	1515 Gs 151.5 mT	4.43 kg / 9.78 LBS 4434.6 g / 43.5 N	medium risk
5 mm	1271 Gs 127.1 mT	3.12 kg / 6.89 LBS 3124.3 g / 30.6 N	medium risk
10 mm	751 Gs 75.1 mT	1.09 kg / 2.40 LBS 1088.7 g / 10.7 N	low risk
15 mm	435 Gs 43.5 mT	0.37 kg / 0.81 LBS 366.3 g / 3.6 N	low risk
20 mm	262 Gs 26.2 mT	0.13 kg / 0.29 LBS 132.6 g / 1.3 N	low risk
30 mm	110 Gs 11.0 mT	0.02 kg / 0.05 LBS 23.2 g / 0.2 N	low risk
50 mm	30 Gs 3.0 mT	0.00 kg / 0.00 LBS 1.8 g / 0.0 N	low risk

Grip strength drops drastically with every subsequent millimeter of distance. Note that even a microscopic distance (e.g., contamination, paint, dust) significantly weakens the grip. Magnets hold most effectively during direct contact; gap drastically cuts the power. See how flashily the pull force drop, when the product does not adhere tightly to the steel surface. When designing the arrangement, eliminate redundant distances.

Table 2: Sliding load (wall)
MPL 30x20x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.26 kg / 2.78 LBS 1260.0 g / 12.4 N
1 mm	Stal (~0.2)	1.15 kg / 2.54 LBS 1154.0 g / 11.3 N
2 mm	Stal (~0.2)	1.03 kg / 2.26 LBS 1026.0 g / 10.1 N
3 mm	Stal (~0.2)	0.89 kg / 1.95 LBS 886.0 g / 8.7 N
5 mm	Stal (~0.2)	0.62 kg / 1.38 LBS 624.0 g / 6.1 N
10 mm	Stal (~0.2)	0.22 kg / 0.48 LBS 218.0 g / 2.1 N
15 mm	Stal (~0.2)	0.07 kg / 0.16 LBS 74.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 26.0 g / 0.3 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The table below defines the estimated shear load needed to initiate the downward movement of the magnet vertically on a vertical metal surface (considering standard friction). This value is relative to the distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 30x20x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.89 kg / 4.17 LBS 1890.0 g / 18.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.26 kg / 2.78 LBS 1260.0 g / 12.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.63 kg / 1.39 LBS 630.0 g / 6.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.15 kg / 6.94 LBS 3150.0 g / 30.9 N

When hanging a element on a upright surface (e.g., a car body), it you can count on barely approx. 1/5 of its nominal power. Gravity as well as a low friction coefficient mean that magnets move down easier than they pop off the substrate. Want to create a hanger? Note that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the holder will slip down under a significantly smaller weight. Application of an anti-slip layer can significantly increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 30x20x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.63 kg / 1.39 LBS 630.0 g / 6.2 N
1 mm	25%	1.58 kg / 3.47 LBS 1575.0 g / 15.5 N
2 mm	50%	3.15 kg / 6.94 LBS 3150.0 g / 30.9 N
3 mm	75%	4.73 kg / 10.42 LBS 4725.0 g / 46.4 N
5 mm	100%	6.30 kg / 13.89 LBS 6300.0 g / 61.8 N
10 mm	100%	6.30 kg / 13.89 LBS 6300.0 g / 61.8 N
11 mm	100%	6.30 kg / 13.89 LBS 6300.0 g / 61.8 N
12 mm	100%	6.30 kg / 13.89 LBS 6300.0 g / 61.8 N

A thin metal plate cannot take in the entire magnetic field, which weakens actual performance of the holder. Should you mount a strong magnet to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize 100% of this neodymium's power, you require a sufficiently solid piece of steel. The saturation effect means that on sheet metal structures (e.g., appliance housings), the holder holds weaker. We recommend selecting the steel dimension based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MPL 30x20x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.30 kg / 13.89 LBS 6300.0 g / 61.8 N	OK
40 °C	-2.2%	6.16 kg / 13.58 LBS 6161.4 g / 60.4 N	OK
60 °C	-4.4%	6.02 kg / 13.28 LBS 6022.8 g / 59.1 N
80 °C	-6.6%	5.88 kg / 12.97 LBS 5884.2 g / 57.7 N
100 °C	-28.8%	4.49 kg / 9.89 LBS 4485.6 g / 44.0 N

Classic neodymiums lose strength after exceeding the maximum temperature. Protect against heat – high temperature can irreversibly damage this magnet. With increasing heat, the neodymium's power temporarily drops. Avoid using this magnet in hot environments higher than its operating temperature limit. Exceeding the critical threshold will lead to destruction of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures compared to rod magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 30x20x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	12.06 kg / 26.58 LBS 3 198 Gs	1.81 kg / 3.99 LBS 1809 g / 17.7 N	N/A
1 mm	11.59 kg / 25.55 LBS 3 540 Gs	1.74 kg / 3.83 LBS 1739 g / 17.1 N	10.43 kg / 23.00 LBS ~0 Gs
2 mm	11.05 kg / 24.35 LBS 3 456 Gs	1.66 kg / 3.65 LBS 1657 g / 16.3 N	9.94 kg / 21.92 LBS ~0 Gs
3 mm	10.45 kg / 23.03 LBS 3 361 Gs	1.57 kg / 3.45 LBS 1567 g / 15.4 N	9.40 kg / 20.73 LBS ~0 Gs
5 mm	9.15 kg / 20.18 LBS 3 146 Gs	1.37 kg / 3.03 LBS 1373 g / 13.5 N	8.24 kg / 18.16 LBS ~0 Gs
10 mm	5.98 kg / 13.18 LBS 2 543 Gs	0.90 kg / 1.98 LBS 897 g / 8.8 N	5.38 kg / 11.86 LBS ~0 Gs
20 mm	2.08 kg / 4.59 LBS 1 501 Gs	0.31 kg / 0.69 LBS 313 g / 3.1 N	1.88 kg / 4.13 LBS ~0 Gs
50 mm	0.10 kg / 0.22 LBS 331 Gs	0.02 kg / 0.03 LBS 15 g / 0.1 N	0.09 kg / 0.20 LBS ~0 Gs
60 mm	0.04 kg / 0.10 LBS 219 Gs	0.01 kg / 0.01 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
70 mm	0.02 kg / 0.05 LBS 151 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
80 mm	0.01 kg / 0.02 LBS 108 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
90 mm	0.01 kg / 0.01 LBS 80 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 60 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a magnet and sheet setup. The setup of two magnets generates a stronger field and a larger range of action. Planning to create a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the impact force is massive. The repulsion force is slightly lower than the connection force, but still significant.
*Field value for N-N configuration drops to ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Note: Calculations refer to shear force of dual identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - warnings
MPL 30x20x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.0 cm
Hearing aid	10 Gs (1.0 mT)	7.5 cm
Mechanical watch	20 Gs (2.0 mT)	6.0 cm
Mobile device	40 Gs (4.0 mT)	4.5 cm
Remote	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation is a real danger to electronic devices as well as pacemakers. These neodymiums generate a field that prevents correct functioning of digital equipment. Be aware: the unseen radiation passes through tissues and plastic. Exceptional care must be taken by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MPL 30x20x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	20.81 km/h (5.78 m/s)	0.30 J
30 mm	32.75 km/h (9.10 m/s)	0.75 J
50 mm	42.20 km/h (11.72 m/s)	1.24 J
100 mm	59.66 km/h (16.57 m/s)	2.47 J

NdFeB products are prone to chipping – a strong collision with metal can result in shattering. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Striking energy can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Coating parameters (durability)
MPL 30x20x4 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MPL 30x20x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	12 775 Mx	127.8 µWb
P_c Coefficient	0.22	Low (Flat)

Flux value emitted by the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 30x20x4 / N38

Environment	Effective steel pull	Effect
Air (land)	6.30 kg	Standard
Water (riverbed)	7.21 kg (+0.91 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.

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Sliding resistance

*Caution: On a vertical wall, the magnet retains merely a fraction of its nominal pull.

2. Steel thickness impact

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

3. Thermal stability

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.22

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 and environmental data

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: 020286-2026

Measurement Calculator

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Kilograms (kg)

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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 30x20x4 mm and a weight of 18 g, guarantees the highest quality connection. As a block magnet with high power (approx. 6.30 kg), this product is available immediately from our warehouse in Poland. Furthermore, 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 30x20x4 / 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 30x20x4 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 6.30 kg), they are ideal as closers in furniture making and mounting elements in automation. 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 30x20x4 / N38, it is best to use strong epoxy glues (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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 30x20x4 / N38 model is magnetized axially (dimension 4 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 30x20x4 mm, which, at a weight of 18 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 30x20x4 mm and a self-weight of 18 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Strengths

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

They retain attractive force for around 10 years – the loss is just ~1% (in theory),
They show high resistance to demagnetization induced by presence of other magnetic fields,
The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
They show high magnetic induction at the operating surface, which increases their power,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Thanks to versatility in forming and the ability to modify to individual projects,
Key role in high-tech industry – they are utilized in mass storage devices, electric drive systems, medical devices, also complex engineering applications.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also increases their durability
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
We recommend a housing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices are able to complicate diagnosis medical when they are in the body.
Due to expensive raw materials, their price is relatively high,

Lifting parameters

Best holding force of the magnet in ideal parameters – what affects it?

The lifting capacity listed is a theoretical maximum value performed under the following configuration:

on a base made of mild steel, effectively closing the magnetic field
possessing a massiveness of min. 10 mm to avoid saturation
characterized by lack of roughness
under conditions of ideal adhesion (metal-to-metal)
under perpendicular application of breakaway force (90-degree angle)
at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

In practice, the actual holding force is determined by a number of factors, ranked from most significant:

Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Steel type – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the holding force.

Safe handling of NdFeB magnets

Phone sensors

Navigation devices and smartphones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can decalibrate the internal compass in your phone.

Fragile material

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Heat sensitivity

Keep cool. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, ask us about HT versions (H, SH, UH).

Safe operation

Handle magnets consciously. Their huge power can surprise even professionals. Stay alert and do not underestimate their power.

Cards and drives

Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Pinching danger

Big blocks can break fingers instantly. Do not place your hand betwixt two strong magnets.

ICD Warning

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Metal Allergy

It is widely known that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands or choose versions in plastic housing.

Do not drill into magnets

Powder generated during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.

Product not for children

Absolutely store magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are tragic.

Warning! More info about risks in the article: Safety of working with magnets.

MPL 30x20x4 / N38 - lamellar magnet

Physical properties - MPL 30x20x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - technical parameters

Table 1: Static force (pull vs gap) - power drop MPL 30x20x4 / N38

Table 2: Sliding load (wall) MPL 30x20x4 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MPL 30x20x4 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 30x20x4 / N38

Table 5: Working in heat (material behavior) - thermal limit MPL 30x20x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MPL 30x20x4 / N38

Table 7: Hazards (implants) - warnings MPL 30x20x4 / N38

Table 8: Dynamics (cracking risk) - warning MPL 30x20x4 / N38

Table 9: Coating parameters (durability) MPL 30x20x4 / N38

Table 10: Electrical data (Pc) MPL 30x20x4 / N38

Table 11: Hydrostatics and buoyancy MPL 30x20x4 / N38

1. Sliding resistance

2. Steel thickness impact

3. Thermal stability

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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Limitations

Lifting parameters

Best holding force of the magnet in ideal parameters – what affects it?

Determinants of lifting force in real conditions

Safe handling of NdFeB magnets

Phone sensors

Fragile material

Heat sensitivity

Safe operation

Cards and drives

Pinching danger

ICD Warning

Metal Allergy

Do not drill into magnets

Product not for children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MPL 30x20x4 / N38

Table 2: Sliding load (wall)
MPL 30x20x4 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 30x20x4 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 30x20x4 / N38

Table 5: Working in heat (material behavior) - thermal limit
MPL 30x20x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 30x20x4 / N38

Table 7: Hazards (implants) - warnings
MPL 30x20x4 / N38

Table 8: Dynamics (cracking risk) - warning
MPL 30x20x4 / N38

Table 9: Coating parameters (durability)
MPL 30x20x4 / N38

Table 10: Electrical data (P_c)
MPL 30x20x4 / N38

Table 11: Hydrostatics and buoyancy
MPL 30x20x4 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.