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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

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Technical - 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 modeling of the magnet - report

Presented values constitute the outcome of a mathematical calculation. Values rely on algorithms for the material Nd₂Fe₁₄B. Operational parameters might slightly differ. Please consider these calculations as a reference point for designers.

Table 1: Static force (force vs gap) - interaction chart
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	weak grip
15 mm	435 Gs 43.5 mT	0.37 kg / 0.81 LBS 366.3 g / 3.6 N	weak grip
20 mm	262 Gs 26.2 mT	0.13 kg / 0.29 LBS 132.6 g / 1.3 N	weak grip
30 mm	110 Gs 11.0 mT	0.02 kg / 0.05 LBS 23.2 g / 0.2 N	weak grip
50 mm	30 Gs 3.0 mT	0.00 kg / 0.00 LBS 1.8 g / 0.0 N	weak grip

Magnetic force weakens significantly with every mm of distance. Keep in mind that every additional insulation layer (e.g., contamination, paint, veneer) noticeably diminishes the holding power. Neodymiums hold strongest at the point of direct contact; distance weakens the force. Notice how rapidly the parameters plummet, when the product does not adhere flatly to the metal substrate. When designing the arrangement, eliminate redundant distances.

Table 2: Slippage capacity (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

This section calculates the theoretical shear load sufficient to start the sliding of the magnet down on a vertical metal surface (considering typical friction). This parameter varies with the gap size between the magnet and the metal.

Table 3: Wall mounting (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 mounting a magnet on a vertical surface (e.g., a fridge), it will maintain only approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that holders slide down faster than they pull off. Designing a hanger? Remember that the shear force is much weaker than the maximum static pull force. On a painted metal, the element will give way down under a noticeably lighter cargo. Utilizing a rubberized coating can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
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 is not enough to take in the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a too thin substrate, the flux will penetrate right through and the pull force will drop sharply. To utilize the maximum of this magnet's potential, you need a suitably thick piece of steel. The material oversaturation causes that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Working in heat (stability) - 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 irreversibly lose parameters after exceeding the maximum temperature. Protect against heat – heat can irreversibly destroy this product. With every degree above norm, the magnet's power temporarily decreases. Refrain from using this product in hot environments higher than its operating temperature limit. Ignoring the limit will cause destruction of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) risk losing magnetic properties sooner than long magnets. The danger warning in the table points to permanent field degradation for this particular item.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral 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 strong neodymiums attract each other from a much further distance than a magnet and sheet combination. The setup of magnet-to-magnet generates a stronger field and a larger range of operation. Want to build a strong closure? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is huge. The levitation is slightly lower than the attraction, but still impressive.
*Flux density between like poles drops to ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
* Results demonstrate shear force of two identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - 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 poses a real danger to electronics as well as medical implants. These neodymiums produce a field that destroys function of sensitive medical devices. Remember: the unseen radiation passes through tissues and housings. Exceptional care must be exercised by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

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 delicate – a strong collision with metal can result in shattering. Watch the impact speed – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear eye protection when playing with large magnets.

Table 9: Anti-corrosion coating 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)

The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Construction 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)

Total magnetic flux passing through the magnet pole. Essential parameter in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Caution: On a vertical surface, the magnet holds merely a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Thermal stability

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

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

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

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.

Engineering data and GPSR

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

Force (pull)

Force in kg

Newtons (N)

lbs

Field Strength

Induction (Gs)

Simply fill in one field, and the calculator compute the rest automatically.

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MPL 7x7x3 / N38 - lamellar magnet

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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. This magnetic block with a force of 61.84 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 6.30 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.

They constitute a key element in the production of wind generators and material handling systems. They work great as invisible mounts under tiles, wood, or glass. 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. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. 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.

The presented product is a neodymium magnet with precisely defined parameters: 30 mm (length), 20 mm (width), and 4 mm (thickness). 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 protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of neodymium magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:

They retain attractive force for nearly ten years – the loss is just ~1% (based on simulations),
Neodymium magnets are distinguished by exceptionally resistant to loss of magnetic properties caused by external interference,
A magnet with a shiny silver surface has an effective appearance,
Magnetic induction on the working part of the magnet turns out to be impressive,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Thanks to flexibility in shaping and the capacity to customize to specific needs,
Fundamental importance in high-tech industry – they are used in mass storage devices, motor assemblies, advanced medical instruments, and modern systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest cover - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated forms.
Potential hazard to health – tiny shards of magnets are risky, if swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical after entering the body.
Due to neodymium price, their price is higher than average,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

The load parameter shown concerns the limit force, obtained under ideal test conditions, namely:

using a base made of low-carbon steel, functioning as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
characterized by even structure
without the slightest air gap between the magnet and steel
under vertical application of breakaway force (90-degree angle)
in stable room temperature

Lifting capacity in real conditions – factors

Bear in mind that the working load may be lower depending on elements below, in order of importance:

Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Direction of force – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
Base massiveness – insufficiently thick sheet does not close the flux, causing part of the flux to be escaped to the other side.
Material composition – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
Smoothness – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Warnings

Magnetic media

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

GPS Danger

An intense magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.

Conscious usage

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

Machining danger

Dust generated during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Crushing force

Mind your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Warning for heart patients

For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Allergy Warning

A percentage of the population experience a sensitization to nickel, which is the typical protective layer for neodymium magnets. Frequent touching can result in dermatitis. It is best to wear safety gloves.

Power loss in heat

Control the heat. Exposing the magnet to high heat will permanently weaken its magnetic structure and strength.

Material brittleness

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

This is not a toy

These products are not toys. Swallowing several magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires urgent medical intervention.

Warning! Want to know more? Check our post: Why are neodymium magnets dangerous?

MPL 30x20x4 / N38 - lamellar magnet

Technical - MPL 30x20x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - report

Table 1: Static force (force vs gap) - interaction chart MPL 30x20x4 / N38

Table 2: Slippage capacity (wall) MPL 30x20x4 / N38

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

Table 4: Steel thickness (substrate influence) - power losses MPL 30x20x4 / N38

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

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

Table 7: Protective zones (electronics) - warnings MPL 30x20x4 / N38

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

Table 9: Anti-corrosion coating durability MPL 30x20x4 / N38

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

Table 11: Underwater work (magnet fishing) 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)

Force (pull)

Field Strength

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Pros as well as cons of neodymium magnets.

Strengths

Cons

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

Lifting capacity in real conditions – factors

Warnings

Magnetic media

GPS Danger

Conscious usage

Machining danger

Crushing force

Warning for heart patients

Allergy Warning

Power loss in heat

Material brittleness

This is not a toy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MPL 30x20x4 / N38

Table 2: Slippage capacity (wall)
MPL 30x20x4 / N38

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

Table 4: Steel thickness (substrate influence) - power losses
MPL 30x20x4 / N38

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

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

Table 7: Protective zones (electronics) - warnings
MPL 30x20x4 / N38

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

Table 9: Anti-corrosion coating durability
MPL 30x20x4 / N38

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

Table 11: Underwater work (magnet fishing)
MPL 30x20x4 / N38