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MPL 40x40x15 / 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 020161

GTIN/EAN: 5906301811671

5.00

length

40 mm [±0,1 mm]

Width

40 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

180 g

Magnetization Direction

↑ axial

Load capacity

46.94 kg / 460.51 N

Magnetic Induction

345.80 mT / 3458 Gs

Coating

[NiCuNi] Nickel

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55.37 ZŁ with VAT / pcs + price for transport

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Product card - MPL 40x40x15 / N38 - lamellar magnet

Specification / characteristics - MPL 40x40x15 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020161
GTIN/EAN	5906301811671
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	40 mm [±0,1 mm]
Width	40 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	180 g
Magnetization Direction	↑ axial
Load capacity ~ ?	46.94 kg / 460.51 N
Magnetic Induction ~ ?	345.80 mT / 3458 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x40x15 / 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 data represent the result of a engineering calculation. Values rely on algorithms for the material Nd₂Fe₁₄B. Operational conditions may differ. Use these data as a supplementary guide for designers.

Table 1: Static pull force (pull vs distance) - interaction chart
MPL 40x40x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3458 Gs 345.8 mT	46.94 kg / 103.48 lbs 46940.0 g / 460.5 N	dangerous!
1 mm	3333 Gs 333.3 mT	43.62 kg / 96.16 lbs 43616.1 g / 427.9 N	dangerous!
2 mm	3199 Gs 319.9 mT	40.19 kg / 88.60 lbs 40189.1 g / 394.3 N	dangerous!
3 mm	3060 Gs 306.0 mT	36.77 kg / 81.06 lbs 36767.3 g / 360.7 N	dangerous!
5 mm	2773 Gs 277.3 mT	30.19 kg / 66.55 lbs 30187.9 g / 296.1 N	dangerous!
10 mm	2078 Gs 207.8 mT	16.95 kg / 37.37 lbs 16950.2 g / 166.3 N	dangerous!
15 mm	1507 Gs 150.7 mT	8.91 kg / 19.65 lbs 8913.7 g / 87.4 N	strong
20 mm	1085 Gs 108.5 mT	4.62 kg / 10.19 lbs 4622.3 g / 45.3 N	strong
30 mm	580 Gs 58.0 mT	1.32 kg / 2.92 lbs 1322.9 g / 13.0 N	low risk
50 mm	204 Gs 20.4 mT	0.16 kg / 0.36 lbs 164.0 g / 1.6 N	low risk

Grip strength drops drastically with every subsequent millimeter of gap. Note that even a very thin break (e.g., dirt, varnish, rust) noticeably reduces the pull force. Neodymiums operate strongest at the point of direct contact; air break kills the power. Notice how rapidly the pull force fall, when the product does not adhere tightly to the steel surface. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Slippage capacity (vertical surface)
MPL 40x40x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	9.39 kg / 20.70 lbs 9388.0 g / 92.1 N
1 mm	Stal (~0.2)	8.72 kg / 19.23 lbs 8724.0 g / 85.6 N
2 mm	Stal (~0.2)	8.04 kg / 17.72 lbs 8038.0 g / 78.9 N
3 mm	Stal (~0.2)	7.35 kg / 16.21 lbs 7354.0 g / 72.1 N
5 mm	Stal (~0.2)	6.04 kg / 13.31 lbs 6038.0 g / 59.2 N
10 mm	Stal (~0.2)	3.39 kg / 7.47 lbs 3390.0 g / 33.3 N
15 mm	Stal (~0.2)	1.78 kg / 3.93 lbs 1782.0 g / 17.5 N
20 mm	Stal (~0.2)	0.92 kg / 2.04 lbs 924.0 g / 9.1 N
30 mm	Stal (~0.2)	0.26 kg / 0.58 lbs 264.0 g / 2.6 N
50 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 32.0 g / 0.3 N

The following data presents the theoretical holding capacity needed to cause the sliding of the magnet vertically on a vertical metal surface (considering standard friction). This parameter is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x40x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	14.08 kg / 31.05 lbs 14082.0 g / 138.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	9.39 kg / 20.70 lbs 9388.0 g / 92.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	4.69 kg / 10.35 lbs 4694.0 g / 46.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	23.47 kg / 51.74 lbs 23470.0 g / 230.2 N

When mounting a magnet on a upright wall (e.g., a fridge), it will only hold only approx. 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip cause that holders move down easier than they pop off the substrate. Planning a wall mount? Remember that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the element will slip down under a much lighter weight. Using a rubber layer can effectively increase the grip.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x40x15 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	2.35 kg / 5.17 lbs 2347.0 g / 23.0 N
1 mm	13%	5.87 kg / 12.94 lbs 5867.5 g / 57.6 N
2 mm	25%	11.74 kg / 25.87 lbs 11735.0 g / 115.1 N
3 mm	38%	17.60 kg / 38.81 lbs 17602.5 g / 172.7 N
5 mm	63%	29.34 kg / 64.68 lbs 29337.5 g / 287.8 N
10 mm	100%	46.94 kg / 103.48 lbs 46940.0 g / 460.5 N
11 mm	100%	46.94 kg / 103.48 lbs 46940.0 g / 460.5 N
12 mm	100%	46.94 kg / 103.48 lbs 46940.0 g / 460.5 N

A thin metal plate is incapable of focus the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a too thin substrate, the field will pass right through and the pull force will drop sharply. To utilize 100% of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation effect means that on delicate walls (e.g., appliance housings), the product shows lower pull force. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x40x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	46.94 kg / 103.48 lbs 46940.0 g / 460.5 N	OK
40 °C	-2.2%	45.91 kg / 101.21 lbs 45907.3 g / 450.4 N	OK
60 °C	-4.4%	44.87 kg / 98.93 lbs 44874.6 g / 440.2 N
80 °C	-6.6%	43.84 kg / 96.65 lbs 43842.0 g / 430.1 N
100 °C	-28.8%	33.42 kg / 73.68 lbs 33421.3 g / 327.9 N

Ordinary NdFeB products lose strength above the temperature limit. Avoid high temperatures – excessive heat can irreversibly demagnetize this product. As the temperature rises, the magnet's capacity temporarily drops. Refrain from using this product in hot environments higher than its operating temperature limit. Exceeding the critical threshold will cause destruction of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than taller cylinders. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MPL 40x40x15 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	117.92 kg / 259.97 lbs 4 963 Gs	17.69 kg / 39.00 lbs 17688 g / 173.5 N	N/A
1 mm	113.82 kg / 250.94 lbs 6 794 Gs	17.07 kg / 37.64 lbs 17074 g / 167.5 N	102.44 kg / 225.84 lbs ~0 Gs
2 mm	109.57 kg / 241.57 lbs 6 666 Gs	16.44 kg / 36.23 lbs 16436 g / 161.2 N	98.62 kg / 217.41 lbs ~0 Gs
3 mm	105.28 kg / 232.10 lbs 6 534 Gs	15.79 kg / 34.81 lbs 15792 g / 154.9 N	94.75 kg / 208.89 lbs ~0 Gs
5 mm	96.65 kg / 213.08 lbs 6 261 Gs	14.50 kg / 31.96 lbs 14498 g / 142.2 N	86.99 kg / 191.77 lbs ~0 Gs
10 mm	75.84 kg / 167.19 lbs 5 546 Gs	11.38 kg / 25.08 lbs 11376 g / 111.6 N	68.25 kg / 150.47 lbs ~0 Gs
20 mm	42.58 kg / 93.88 lbs 4 155 Gs	6.39 kg / 14.08 lbs 6387 g / 62.7 N	38.32 kg / 84.49 lbs ~0 Gs
50 mm	6.12 kg / 13.49 lbs 1 575 Gs	0.92 kg / 2.02 lbs 918 g / 9.0 N	5.51 kg / 12.14 lbs ~0 Gs
60 mm	3.32 kg / 7.33 lbs 1 161 Gs	0.50 kg / 1.10 lbs 499 g / 4.9 N	2.99 kg / 6.59 lbs ~0 Gs
70 mm	1.87 kg / 4.12 lbs 871 Gs	0.28 kg / 0.62 lbs 281 g / 2.8 N	1.68 kg / 3.71 lbs ~0 Gs
80 mm	1.09 kg / 2.41 lbs 665 Gs	0.16 kg / 0.36 lbs 164 g / 1.6 N	0.98 kg / 2.17 lbs ~0 Gs
90 mm	0.66 kg / 1.46 lbs 517 Gs	0.10 kg / 0.22 lbs 99 g / 1.0 N	0.59 kg / 1.31 lbs ~0 Gs
100 mm	0.41 kg / 0.91 lbs 409 Gs	0.06 kg / 0.14 lbs 62 g / 0.6 N	0.37 kg / 0.82 lbs ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and sheet setup. Such a system of magnet-to-magnet creates a more powerful interaction and a larger range of action. Want to build a powerful holder? Use a pair of magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the collision energy is massive. The levitation is a bit weaker than the connection force, but still large.
*Flux density for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Note: Calculations show friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 40x40x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	20.5 cm
Hearing aid	10 Gs (1.0 mT)	16.0 cm
Timepiece	20 Gs (2.0 mT)	12.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	10.0 cm
Car key	50 Gs (5.0 mT)	9.0 cm
Payment card	400 Gs (40.0 mT)	4.0 cm
HDD hard drive	600 Gs (60.0 mT)	3.0 cm

Extremely neodym field is a large risk to electronic devices as well as pacemakers. These NdFeB products produce a flux that destroys function of digital equipment. Be aware: the unseen radiation acts through matter and plastic. Increased vigilance must be taken by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MPL 40x40x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.62 km/h (5.45 m/s)	2.67 J
30 mm	28.70 km/h (7.97 m/s)	5.72 J
50 mm	36.50 km/h (10.14 m/s)	9.25 J
100 mm	51.50 km/h (14.31 m/s)	18.42 J

Magnetic elements are prone to chipping – a violent impact against metal risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Striking energy can destroy the magnet or painful pinches to fingers. Always hold the magnet during installation so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Surface protection spec
MPL 40x40x15 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Construction data (P_c)
MPL 40x40x15 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	58 107 Mx	581.1 µWb
P_c Coefficient	0.43	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 40x40x15 / N38

Environment	Effective steel pull	Effect
Air (land)	46.94 kg	Standard
Water (riverbed)	53.75 kg (+6.81 kg buoyancy gain)	+14.5%

Corrosion 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. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

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

2. Efficiency vs thickness

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

3. Power loss vs temp

*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) = 0.43

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

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%

Sustainability

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: 020161-2026

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 40x40x15 mm and a weight of 180 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 46.94 kg), this product is available immediately from our warehouse in Poland. 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 40x40x15 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, 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.

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 clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 40x40x15 / N38 model is magnetized through the thickness (dimension 15 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 (40x40 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 40x40x15 mm, which, at a weight of 180 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 40x40x15 mm and a self-weight of 180 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of neodymium magnets.

Strengths

Besides their remarkable pulling force, neodymium magnets offer the following advantages:

Their magnetic field is maintained, and after around 10 years it drops only by ~1% (according to research),
They do not lose their magnetic properties even under close interference source,
In other words, due to the smooth surface of nickel, the element gains a professional look,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to versatility in constructing and the capacity to adapt to specific needs,
Key role in future technologies – they serve a role in magnetic memories, electric drive systems, precision medical tools, and modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of NdFeB magnets:

At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
We recommend cover - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated forms.
Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical in case of swallowing.
Due to neodymium price, their price is relatively high,

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

Magnet power is the result of a measurement for the most favorable conditions, assuming:

on a base made of mild steel, optimally conducting the magnetic field
whose transverse dimension reaches at least 10 mm
characterized by smoothness
under conditions of no distance (metal-to-metal)
under vertical application of breakaway force (90-degree angle)
at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

In practice, the actual lifting capacity is determined by a number of factors, listed from crucial:

Clearance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
Load vector – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
Material composition – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, however under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet’s surface and the plate decreases the load capacity.

Safe handling of neodymium magnets

Bodily injuries

Large magnets can crush fingers instantly. Never place your hand between two strong magnets.

Handling guide

Use magnets consciously. Their huge power can shock even experienced users. Plan your moves and respect their power.

Power loss in heat

Monitor thermal conditions. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.

Machining danger

Fire hazard: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Pacemakers

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Allergy Warning

Some people suffer from a contact allergy to Ni, which is the common plating for neodymium magnets. Frequent touching might lead to dermatitis. We recommend wear safety gloves.

Data carriers

Data protection: Strong magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

No play value

Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and necessitates immediate surgery.

Magnets are brittle

Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Impact on smartphones

Remember: rare earth magnets produce a field that disrupts precision electronics. Keep a safe distance from your mobile, tablet, and GPS.

Caution! Looking for details? Check our post: Why are neodymium magnets dangerous?

MPL 40x40x15 / N38 - lamellar magnet

Product card - MPL 40x40x15 / 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 pull force (pull vs distance) - interaction chart MPL 40x40x15 / N38

Table 2: Slippage capacity (vertical surface) MPL 40x40x15 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x40x15 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 40x40x15 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MPL 40x40x15 / N38

Table 6: Two magnets (attraction) - forces in the system MPL 40x40x15 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MPL 40x40x15 / N38

Table 8: Collisions (cracking risk) - warning MPL 40x40x15 / N38

Table 9: Surface protection spec MPL 40x40x15 / N38

Table 10: Construction data (Pc) MPL 40x40x15 / N38

Table 11: Hydrostatics and buoyancy MPL 40x40x15 / N38

1. Wall mount (shear)

2. Efficiency vs thickness

3. Power loss vs temp

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

Material specification

Sustainability

Force (pull)

Magnetic Field

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MW 55x25 / N38 - cylindrical magnet

Strengths and weaknesses of neodymium magnets.

Strengths

Cons

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

Key elements affecting lifting force

Safe handling of neodymium magnets

Bodily injuries

Handling guide

Power loss in heat

Machining danger

Pacemakers

Allergy Warning

Data carriers

No play value

Magnets are brittle

Impact on smartphones

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - interaction chart
MPL 40x40x15 / N38

Table 2: Slippage capacity (vertical surface)
MPL 40x40x15 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x40x15 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x40x15 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x40x15 / N38

Table 6: Two magnets (attraction) - forces in the system
MPL 40x40x15 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 40x40x15 / N38

Table 8: Collisions (cracking risk) - warning
MPL 40x40x15 / N38

Table 9: Surface protection spec
MPL 40x40x15 / N38

Table 10: Construction data (P_c)
MPL 40x40x15 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x40x15 / N38