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MPL 40x18x10 SH / 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 020157

GTIN/EAN: 5906301811633

5.00

length

40 mm [±0,1 mm]

Width

18 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

54 g

Magnetization Direction

↑ axial

Load capacity

23.81 kg / 233.58 N

Magnetic Induction

366.66 mT / 3667 Gs

Coating

[NiCuNi] Nickel

view properties »

36.29 ZŁ with VAT / pcs + price for transport

29.50 ZŁ net + 23% VAT / pcs

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Physical properties - MPL 40x18x10 SH / N38 - lamellar magnet

Specification / characteristics - MPL 40x18x10 SH / N38 - lamellar magnet

properties

properties	values
Cat. no.	020157
GTIN/EAN	5906301811633
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	18 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	54 g
Magnetization Direction	↑ axial
Load capacity ~ ?	23.81 kg / 233.58 N
Magnetic Induction ~ ?	366.66 mT / 3667 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x18x10 SH / N38 - lamellar magnet

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

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Engineering modeling of the product - technical parameters

The following values constitute the direct effect of a engineering analysis. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual performance may differ from theoretical values. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (force vs gap) - power drop
MPL 40x18x10 SH / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3666 Gs 366.6 mT	23.81 kg / 52.49 pounds 23810.0 g / 233.6 N	dangerous!
1 mm	3399 Gs 339.9 mT	20.48 kg / 45.14 pounds 20476.1 g / 200.9 N	dangerous!
2 mm	3120 Gs 312.0 mT	17.25 kg / 38.02 pounds 17245.9 g / 169.2 N	dangerous!
3 mm	2841 Gs 284.1 mT	14.30 kg / 31.54 pounds 14304.1 g / 140.3 N	dangerous!
5 mm	2321 Gs 232.1 mT	9.55 kg / 21.05 pounds 9547.8 g / 93.7 N	medium risk
10 mm	1370 Gs 137.0 mT	3.32 kg / 7.33 pounds 3324.4 g / 32.6 N	medium risk
15 mm	833 Gs 83.3 mT	1.23 kg / 2.71 pounds 1229.0 g / 12.1 N	safe
20 mm	530 Gs 53.0 mT	0.50 kg / 1.10 pounds 498.1 g / 4.9 N	safe
30 mm	244 Gs 24.4 mT	0.11 kg / 0.23 pounds 105.3 g / 1.0 N	safe
50 mm	75 Gs 7.5 mT	0.01 kg / 0.02 pounds 9.9 g / 0.1 N	safe

Pulling power weakens drastically per each millimeter of distance. Note that even a very thin break (e.g., dirt, varnish, veneer) noticeably weakens the grip. Magnets hold most effectively in perfect adhesion; air break weakens the force. Notice how quickly the pull force drop, when the product does not adhere tightly to the steel surface. When designing the assembly, avoid redundant distances.

Table 2: Sliding force (wall)
MPL 40x18x10 SH / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.76 kg / 10.50 pounds 4762.0 g / 46.7 N
1 mm	Stal (~0.2)	4.10 kg / 9.03 pounds 4096.0 g / 40.2 N
2 mm	Stal (~0.2)	3.45 kg / 7.61 pounds 3450.0 g / 33.8 N
3 mm	Stal (~0.2)	2.86 kg / 6.31 pounds 2860.0 g / 28.1 N
5 mm	Stal (~0.2)	1.91 kg / 4.21 pounds 1910.0 g / 18.7 N
10 mm	Stal (~0.2)	0.66 kg / 1.46 pounds 664.0 g / 6.5 N
15 mm	Stal (~0.2)	0.25 kg / 0.54 pounds 246.0 g / 2.4 N
20 mm	Stal (~0.2)	0.10 kg / 0.22 pounds 100.0 g / 1.0 N
30 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N

The table below calculates the approximate shear load needed to start the shifting of the magnet vertically against a vertical steel wall (assuming standard friction). This value is relative to the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x18x10 SH / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	7.14 kg / 15.75 pounds 7143.0 g / 70.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.76 kg / 10.50 pounds 4762.0 g / 46.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.38 kg / 5.25 pounds 2381.0 g / 23.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	11.91 kg / 26.25 pounds 11905.0 g / 116.8 N

When mounting a element on a vertical surface (e.g., a fridge), it you can count on just approx. 1/5 of its nominal power. Gravitational force as well as a weak degree of grip mean that holders move down easier than they pop off the substrate. Planning a vertical fastening? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a smooth steel, the magnet will give way down under a much lighter cargo. Utilizing a rubberized coating can drastically improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x18x10 SH / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.19 kg / 2.62 pounds 1190.5 g / 11.7 N
1 mm	13%	2.98 kg / 6.56 pounds 2976.3 g / 29.2 N
2 mm	25%	5.95 kg / 13.12 pounds 5952.5 g / 58.4 N
3 mm	38%	8.93 kg / 19.68 pounds 8928.7 g / 87.6 N
5 mm	63%	14.88 kg / 32.81 pounds 14881.3 g / 146.0 N
10 mm	100%	23.81 kg / 52.49 pounds 23810.0 g / 233.6 N
11 mm	100%	23.81 kg / 52.49 pounds 23810.0 g / 233.6 N
12 mm	100%	23.81 kg / 52.49 pounds 23810.0 g / 233.6 N

A thin sheet cannot take in the entire magnetic field, which weakens actual performance of the holder. If you mount a strong magnet to a weak sheet, the flux will pass right through and the attraction force will be weaker. To achieve the maximum of this magnet's potential, you need a suitably thick element of steel. The saturation phenomenon causes that on sheet metal structures (e.g., appliance housings), the holder shows lower pull force. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MPL 40x18x10 SH / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	23.81 kg / 52.49 pounds 23810.0 g / 233.6 N	OK
40 °C	-2.2%	23.29 kg / 51.34 pounds 23286.2 g / 228.4 N	OK
60 °C	-4.4%	22.76 kg / 50.18 pounds 22762.4 g / 223.3 N
80 °C	-6.6%	22.24 kg / 49.03 pounds 22238.5 g / 218.2 N
100 °C	-28.8%	16.95 kg / 37.37 pounds 16952.7 g / 166.3 N

Standard neodymium magnets irreversibly lose power above the temperature limit. Avoid high temperatures – excessive heat can permanently damage this product. With increasing heat, the magnet's force temporarily drops. Refrain from using this magnet close to heaters exceeding its working range. Exceeding the critical threshold will lead to permanent loss of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Flat magnets (pancake types) may lose charge permanently sooner than taller cylinders. The danger warning in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 40x18x10 SH / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	59.64 kg / 131.49 pounds 5 034 Gs	8.95 kg / 19.72 pounds 8947 g / 87.8 N	N/A
1 mm	55.50 kg / 122.35 pounds 7 072 Gs	8.32 kg / 18.35 pounds 8325 g / 81.7 N	49.95 kg / 110.12 pounds ~0 Gs
2 mm	51.29 kg / 113.08 pounds 6 799 Gs	7.69 kg / 16.96 pounds 7694 g / 75.5 N	46.16 kg / 101.77 pounds ~0 Gs
3 mm	47.18 kg / 104.01 pounds 6 520 Gs	7.08 kg / 15.60 pounds 7076 g / 69.4 N	42.46 kg / 93.61 pounds ~0 Gs
5 mm	39.41 kg / 86.88 pounds 5 959 Gs	5.91 kg / 13.03 pounds 5912 g / 58.0 N	35.47 kg / 78.20 pounds ~0 Gs
10 mm	23.92 kg / 52.73 pounds 4 643 Gs	3.59 kg / 7.91 pounds 3588 g / 35.2 N	21.53 kg / 47.46 pounds ~0 Gs
20 mm	8.33 kg / 18.36 pounds 2 739 Gs	1.25 kg / 2.75 pounds 1249 g / 12.3 N	7.49 kg / 16.52 pounds ~0 Gs
50 mm	0.55 kg / 1.22 pounds 705 Gs	0.08 kg / 0.18 pounds 83 g / 0.8 N	0.50 kg / 1.09 pounds ~0 Gs
60 mm	0.26 kg / 0.58 pounds 487 Gs	0.04 kg / 0.09 pounds 40 g / 0.4 N	0.24 kg / 0.52 pounds ~0 Gs
70 mm	0.13 kg / 0.30 pounds 348 Gs	0.02 kg / 0.04 pounds 20 g / 0.2 N	0.12 kg / 0.27 pounds ~0 Gs
80 mm	0.07 kg / 0.16 pounds 256 Gs	0.01 kg / 0.02 pounds 11 g / 0.1 N	0.07 kg / 0.14 pounds ~0 Gs
90 mm	0.04 kg / 0.09 pounds 194 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.04 kg / 0.08 pounds ~0 Gs
100 mm	0.02 kg / 0.05 pounds 149 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs

Two magnets interact from a wider radius than a neodymium and metal combination. Such a system of two magnets generates a stronger field and a further horizon of performance. Designing a strong closure? Utilize two neodymiums instead of one magnet and a striker plate. Remember that when attracting two neodymiums, the impact force is huge. The levitation is marginally weaker than the connection force, but still large.
*Flux density for N-N configuration drops to ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Note: Results show sliding force of dual same neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MPL 40x18x10 SH / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	14.0 cm
Hearing aid	10 Gs (1.0 mT)	11.0 cm
Timepiece	20 Gs (2.0 mT)	8.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.5 cm
Remote	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation poses a large risk to electronic devices and pacemakers. These magnets generate a flux that disrupts operation of sensitive medical devices. Notice: the unseen radiation passes through tissues and glass. Special caution must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, remotes, speakers, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MPL 40x18x10 SH / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.95 km/h (6.38 m/s)	1.10 J
30 mm	36.78 km/h (10.22 m/s)	2.82 J
50 mm	47.37 km/h (13.16 m/s)	4.67 J
100 mm	66.97 km/h (18.60 m/s)	9.34 J

Magnetic elements are very brittle – a strong collision with metal can result in shattering. Watch the impact speed – a neodymium left loose speeds with massive force. Striking energy can trigger coating fragments or painful pinches to fingers. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when working with large magnets.

Table 9: Surface protection spec
MPL 40x18x10 SH / N38

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

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MPL 40x18x10 SH / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	26 060 Mx	260.6 µWb
P_c Coefficient	0.43	Low (Flat)

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 40x18x10 SH / N38

Environment	Effective steel pull	Effect
Air (land)	23.81 kg	Standard
Water (riverbed)	27.26 kg (+3.45 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.

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Warning: On a vertical wall, the magnet holds only ~20% of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) severely limits the holding force.

3. Power loss vs temp

*For N38 material, 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) = 0.43

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%

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: 020157-2026

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Model MPL 40x18x10 SH / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 23.81 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 40x18x10 SH / 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 fasteners under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 40x18x10 SH / N38, it is best to use two-component adhesives (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 40x18x10 SH / N38 model is magnetized through the thickness (dimension 10 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. This is the most popular configuration for block magnets used in separators and holders.

The presented product is a neodymium magnet with precisely defined parameters: 40 mm (length), 18 mm (width), and 10 mm (thickness). It is a magnetic block with dimensions 40x18x10 mm and a self-weight of 54 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of rare earth magnets.

Advantages

Besides their remarkable magnetic power, neodymium magnets offer the following advantages:

They do not lose magnetism, even during approximately 10 years – the reduction in strength is only ~1% (theoretically),
They are resistant to demagnetization induced by external field influence,
A magnet with a shiny silver surface has an effective appearance,
The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of precise shaping and modifying to concrete needs,
Significant place in future technologies – they are commonly used in hard drives, electric motors, advanced medical instruments, also multitasking production systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of neodymium magnets:

At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Due to limitations in producing nuts and complex shapes in magnets, we recommend using a housing - magnetic mount.
Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small elements of these magnets can complicate diagnosis medical when they are in the body.
With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

Maximum magnetic pulling force – what contributes to it?

The specified lifting capacity refers to the maximum value, obtained under optimal environment, namely:

with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
possessing a massiveness of min. 10 mm to ensure full flux closure
with an ideally smooth contact surface
under conditions of no distance (surface-to-surface)
during detachment in a direction vertical to the plane
at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

It is worth knowing that the magnet holding will differ depending on elements below, starting with the most relevant:

Distance – existence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures decrease magnetic properties and holding force.
Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
Thermal environment – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity was assessed with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

H&S for magnets

Material brittleness

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Clashing of two magnets will cause them shattering into shards.

Magnetic interference

An intense magnetic field disrupts the operation of magnetometers in phones and navigation systems. Do not bring magnets near a smartphone to avoid damaging the sensors.

Finger safety

Risk of injury: The attraction force is so immense that it can result in hematomas, pinching, and broken bones. Use thick gloves.

Heat warning

Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Machining danger

Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Danger to the youngest

NdFeB magnets are not intended for children. Eating a few magnets may result in them connecting inside the digestive tract, which poses a severe health hazard and requires urgent medical intervention.

Protect data

Powerful magnetic fields can destroy records on credit cards, hard drives, and storage devices. Stay away of at least 10 cm.

Nickel allergy

Certain individuals have a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Extended handling may cause skin redness. We suggest use safety gloves.

Health Danger

Warning for patients: Strong magnetic fields disrupt medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Powerful field

Before starting, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Important! Need more info? Read our article: Why are neodymium magnets dangerous?

MPL 40x18x10 SH / N38 - lamellar magnet

Physical properties - MPL 40x18x10 SH / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the product - technical parameters

Table 1: Static pull force (force vs gap) - power drop MPL 40x18x10 SH / N38

Table 2: Sliding force (wall) MPL 40x18x10 SH / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x18x10 SH / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 40x18x10 SH / N38

Table 5: Thermal stability (stability) - thermal limit MPL 40x18x10 SH / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MPL 40x18x10 SH / N38

Table 7: Hazards (implants) - precautionary measures MPL 40x18x10 SH / N38

Table 8: Collisions (kinetic energy) - collision effects MPL 40x18x10 SH / N38

Table 9: Surface protection spec MPL 40x18x10 SH / N38

Table 10: Electrical data (Pc) MPL 40x18x10 SH / N38

Table 11: Physics of underwater searching MPL 40x18x10 SH / N38

1. Shear force

2. Plate thickness effect

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

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Advantages as well as disadvantages of rare earth magnets.

Advantages

Cons

Pull force analysis

Maximum magnetic pulling force – what contributes to it?

Magnet lifting force in use – key factors

H&S for magnets

Material brittleness

Magnetic interference

Finger safety

Heat warning

Machining danger

Danger to the youngest

Protect data

Nickel allergy

Health Danger

Powerful field

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - power drop
MPL 40x18x10 SH / N38

Table 2: Sliding force (wall)
MPL 40x18x10 SH / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x18x10 SH / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 40x18x10 SH / N38

Table 5: Thermal stability (stability) - thermal limit
MPL 40x18x10 SH / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 40x18x10 SH / N38

Table 7: Hazards (implants) - precautionary measures
MPL 40x18x10 SH / N38

Table 8: Collisions (kinetic energy) - collision effects
MPL 40x18x10 SH / N38

Table 9: Surface protection spec
MPL 40x18x10 SH / N38

Table 10: Electrical data (P_c)
MPL 40x18x10 SH / N38

Table 11: Physics of underwater searching
MPL 40x18x10 SH / N38