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MPL 40x10x4 / 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 020150

GTIN/EAN: 5906301811565

5.00

length

40 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

12 g

Magnetization Direction

↑ axial

Load capacity

9.31 kg / 91.33 N

Magnetic Induction

275.57 mT / 2756 Gs

Coating

[NiCuNi] Nickel

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Detailed specification - MPL 40x10x4 / N38 - lamellar magnet

Specification / characteristics - MPL 40x10x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020150
GTIN/EAN	5906301811565
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	10 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	12 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.31 kg / 91.33 N
Magnetic Induction ~ ?	275.57 mT / 2756 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x10x4 / N38 - lamellar magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Physical modeling of the assembly - report

These information constitute the outcome of a physical analysis. Results rely on algorithms for the class Nd₂Fe₁₄B. Actual parameters may differ. Use these data as a supplementary guide when designing systems.

Table 1: Static force (force vs gap) - interaction chart
MPL 40x10x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2755 Gs 275.5 mT	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N	strong
1 mm	2413 Gs 241.3 mT	7.14 kg / 15.75 pounds 7143.1 g / 70.1 N	strong
2 mm	2044 Gs 204.4 mT	5.13 kg / 11.31 pounds 5128.9 g / 50.3 N	strong
3 mm	1703 Gs 170.3 mT	3.56 kg / 7.85 pounds 3559.5 g / 34.9 N	strong
5 mm	1173 Gs 117.3 mT	1.69 kg / 3.72 pounds 1688.2 g / 16.6 N	low risk
10 mm	522 Gs 52.2 mT	0.33 kg / 0.74 pounds 334.9 g / 3.3 N	low risk
15 mm	277 Gs 27.7 mT	0.09 kg / 0.21 pounds 94.2 g / 0.9 N	low risk
20 mm	163 Gs 16.3 mT	0.03 kg / 0.07 pounds 32.8 g / 0.3 N	low risk
30 mm	69 Gs 6.9 mT	0.01 kg / 0.01 pounds 5.8 g / 0.1 N	low risk
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 pounds 0.5 g / 0.0 N	low risk

Grip strength drops significantly with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, paint, rust) significantly weakens the grip. Magnetic products hold most effectively during direct contact; gap kills the power. Analyze how flashily the load capacity fall, when the product does not adhere flatly to the metal substrate. When designing the assembly, discard redundant distances.

Table 2: Slippage load (vertical surface)
MPL 40x10x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.86 kg / 4.11 pounds 1862.0 g / 18.3 N
1 mm	Stal (~0.2)	1.43 kg / 3.15 pounds 1428.0 g / 14.0 N
2 mm	Stal (~0.2)	1.03 kg / 2.26 pounds 1026.0 g / 10.1 N
3 mm	Stal (~0.2)	0.71 kg / 1.57 pounds 712.0 g / 7.0 N
5 mm	Stal (~0.2)	0.34 kg / 0.75 pounds 338.0 g / 3.3 N
10 mm	Stal (~0.2)	0.07 kg / 0.15 pounds 66.0 g / 0.6 N
15 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 18.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section presents the theoretical holding capacity required to cause the downward movement of the magnet down against a upright metal surface (considering standard friction). This parameter is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x10x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.79 kg / 6.16 pounds 2793.0 g / 27.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.86 kg / 4.11 pounds 1862.0 g / 18.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.93 kg / 2.05 pounds 931.0 g / 9.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.66 kg / 10.26 pounds 4655.0 g / 45.7 N

When hanging a element on a vertical wall (e.g., a board), it will only hold barely about 1/5 of its maximum pull force. Gravity as well as a low friction coefficient cause that magnets move down faster than they detach. Planning a vertical fastening? Note that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the holder will slip down under a much lighter cargo. Application of an anti-slip pad can effectively improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x10x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.93 kg / 2.05 pounds 931.0 g / 9.1 N
1 mm	25%	2.33 kg / 5.13 pounds 2327.5 g / 22.8 N
2 mm	50%	4.66 kg / 10.26 pounds 4655.0 g / 45.7 N
3 mm	75%	6.98 kg / 15.39 pounds 6982.5 g / 68.5 N
5 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N
10 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N
11 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N
12 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N

A thin metal plate is incapable of take in the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze 100% of this magnet's power, you need a suitably thick element of metal. The material oversaturation means that on delicate walls (e.g., thin profiles), the product shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - power drop
MPL 40x10x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N	OK
40 °C	-2.2%	9.11 kg / 20.07 pounds 9105.2 g / 89.3 N	OK
60 °C	-4.4%	8.90 kg / 19.62 pounds 8900.4 g / 87.3 N
80 °C	-6.6%	8.70 kg / 19.17 pounds 8695.5 g / 85.3 N
100 °C	-28.8%	6.63 kg / 14.61 pounds 6628.7 g / 65.0 N

Standard neodymium magnets irreversibly lose power past the thermal threshold. Avoid high temperatures – high temperature can permanently damage this product. With every degree above norm, the neodymium's capacity briefly drops. Refrain from using this product in hot environments higher than its working range. Too high temperature will lead to destruction of magnetic properties.

*Important note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) may lose charge permanently sooner than long magnets. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 40x10x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	18.71 kg / 41.25 pounds 4 164 Gs	2.81 kg / 6.19 pounds 2807 g / 27.5 N	N/A
1 mm	16.57 kg / 36.53 pounds 5 185 Gs	2.49 kg / 5.48 pounds 2486 g / 24.4 N	14.91 kg / 32.88 pounds ~0 Gs
2 mm	14.36 kg / 31.65 pounds 4 826 Gs	2.15 kg / 4.75 pounds 2153 g / 21.1 N	12.92 kg / 28.48 pounds ~0 Gs
3 mm	12.24 kg / 26.98 pounds 4 455 Gs	1.84 kg / 4.05 pounds 1836 g / 18.0 N	11.01 kg / 24.28 pounds ~0 Gs
5 mm	8.61 kg / 18.98 pounds 3 737 Gs	1.29 kg / 2.85 pounds 1291 g / 12.7 N	7.75 kg / 17.08 pounds ~0 Gs
10 mm	3.39 kg / 7.48 pounds 2 346 Gs	0.51 kg / 1.12 pounds 509 g / 5.0 N	3.05 kg / 6.73 pounds ~0 Gs
20 mm	0.67 kg / 1.48 pounds 1 045 Gs	0.10 kg / 0.22 pounds 101 g / 1.0 N	0.61 kg / 1.34 pounds ~0 Gs
50 mm	0.03 kg / 0.06 pounds 207 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
60 mm	0.01 kg / 0.03 pounds 138 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs
70 mm	0.01 kg / 0.01 pounds 96 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.01 pounds 69 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 51 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 39 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums attract each other from a wider radius than a magnet and sheet setup. The connection of two magnets creates a more powerful interaction and a larger range of operation. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the collision energy is extreme. The repulsion force is slightly lower than the attraction, but still impressive.
*Flux density between like poles reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Calculations demonstrate sliding force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - warnings
MPL 40x10x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Remote	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a large risk to electronics and medical implants. These NdFeB products generate a flux that destroys function of digital equipment. Remember: the invisible magnetic field passes through tissues and plastic. Special caution must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - warning
MPL 40x10x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.72 km/h (7.98 m/s)	0.38 J
30 mm	48.67 km/h (13.52 m/s)	1.10 J
50 mm	62.82 km/h (17.45 m/s)	1.83 J
100 mm	88.83 km/h (24.68 m/s)	3.65 J

Neodymium magnets are very brittle – a strong collision with metal causes immediate chipping. Control the attraction moment – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or dangerous crushing to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MPL 40x10x4 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MPL 40x10x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 840 Mx	98.4 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux passing through the pole surface. Key data for generator designers and motors. P_c value defines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 40x10x4 / N38

Environment	Effective steel pull	Effect
Air (land)	9.31 kg	Standard
Water (riverbed)	10.66 kg (+1.35 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 only ~20% of its nominal pull.

2. Steel saturation

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

3. Power loss vs temp

*For N38 grade, 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

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

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%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020150-2026

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Component MPL 40x10x4 / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. This magnetic block with a force of 91.33 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 40x10x4 / 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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 40x10x4 / 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. 9.31 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

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 (40x10 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 40x10x4 mm, which, at a weight of 12 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 9.31 kg (force ~91.33 N), which, with such a compact shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of rare earth magnets.

Strengths

Besides their exceptional field intensity, neodymium magnets offer the following advantages:

Their power remains stable, and after around 10 years it decreases only by ~1% (theoretically),
Neodymium magnets are highly resistant to loss of magnetic properties caused by external interference,
A magnet with a metallic silver surface is more attractive,
Neodymium magnets ensure maximum magnetic induction on a contact point, which increases force concentration,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures approaching 230°C and above...
Considering the possibility of flexible forming and adaptation to individualized projects, magnetic components can be modeled in a variety of forms and dimensions, which increases their versatility,
Wide application in innovative solutions – they are utilized in data components, motor assemblies, precision medical tools, as well as industrial machines.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

What to avoid - cons of neodymium magnets and proposals for their use:

At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
We recommend cover - magnetic holder, due to difficulties in realizing threads inside the magnet and complex forms.
Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

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

The load parameter shown concerns the maximum value, recorded under ideal test conditions, meaning:

with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
possessing a thickness of at least 10 mm to avoid saturation
characterized by even structure
under conditions of gap-free contact (metal-to-metal)
during pulling in a direction perpendicular to the mounting surface
at ambient temperature room level

Determinants of practical lifting force of a magnet

Real force is affected by specific conditions, including (from priority):

Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Material composition – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
Surface finish – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was determined by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Danger to the youngest

Product intended for adults. Tiny parts can be swallowed, leading to serious injuries. Store out of reach of children and animals.

Fire warning

Mechanical processing of neodymium magnets carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Handling rules

Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Shattering risk

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Crushing force

Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand between two attracting surfaces.

Nickel coating and allergies

Some people suffer from a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact can result in a rash. It is best to use protective gloves.

GPS and phone interference

A strong magnetic field disrupts the operation of compasses in smartphones and navigation systems. Keep magnets near a smartphone to prevent breaking the sensors.

Keep away from computers

Avoid bringing magnets close to a wallet, computer, or screen. The magnetism can destroy these devices and erase data from cards.

Life threat

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

Power loss in heat

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. This process is irreversible.

Important! Learn more about risks in the article: Magnet Safety Guide.

MPL 40x10x4 / N38 - lamellar magnet

Detailed specification - MPL 40x10x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

Table 1: Static force (force vs gap) - interaction chart MPL 40x10x4 / N38

Table 2: Slippage load (vertical surface) MPL 40x10x4 / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 40x10x4 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 40x10x4 / N38

Table 5: Thermal stability (stability) - power drop MPL 40x10x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MPL 40x10x4 / N38

Table 7: Hazards (electronics) - warnings MPL 40x10x4 / N38

Table 8: Dynamics (kinetic energy) - warning MPL 40x10x4 / N38

Table 9: Anti-corrosion coating durability MPL 40x10x4 / N38

Table 10: Construction data (Flux) MPL 40x10x4 / N38

Table 11: Physics of underwater searching MPL 40x10x4 / N38

1. Wall mount (shear)

2. Steel saturation

3. Power loss vs temp

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

Material specification

Environmental data

Force (pull)

Magnetic Induction

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JM 15x40 - jajka w pudełku/cena za parę - magnetic eggs

Advantages as well as disadvantages of rare earth magnets.

Strengths

Weaknesses

Pull force analysis

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

Determinants of practical lifting force of a magnet

Precautions when working with neodymium magnets

Danger to the youngest

Fire warning

Handling rules

Shattering risk

Crushing force

Nickel coating and allergies

GPS and phone interference

Keep away from computers

Life threat

Power loss in heat

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - interaction chart
MPL 40x10x4 / N38

Table 2: Slippage load (vertical surface)
MPL 40x10x4 / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 40x10x4 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x10x4 / N38

Table 5: Thermal stability (stability) - power drop
MPL 40x10x4 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 40x10x4 / N38

Table 7: Hazards (electronics) - warnings
MPL 40x10x4 / N38

Table 8: Dynamics (kinetic energy) - warning
MPL 40x10x4 / N38

Table 9: Anti-corrosion coating durability
MPL 40x10x4 / N38

Table 10: Construction data (Flux)
MPL 40x10x4 / N38

Table 11: Physics of underwater searching
MPL 40x10x4 / N38