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MPL 40x20x5 / 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 020160

GTIN/EAN: 5906301811664

5.00

length

40 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

30 g

Magnetization Direction

↑ axial

Load capacity

10.67 kg / 104.63 N

Magnetic Induction

205.27 mT / 2053 Gs

Coating

[NiCuNi] Nickel

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12.24 ZŁ with VAT / pcs + price for transport

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Lifting power along with structure of a neodymium magnet can be reviewed with our magnetic calculator.

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Technical data - MPL 40x20x5 / N38 - lamellar magnet

Specification / characteristics - MPL 40x20x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020160
GTIN/EAN	5906301811664
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	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	30 g
Magnetization Direction	↑ axial
Load capacity ~ ?	10.67 kg / 104.63 N
Magnetic Induction ~ ?	205.27 mT / 2053 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x20x5 / 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

Technical simulation of the magnet - technical parameters

The following values are the result of a physical analysis. Values were calculated on models for the class Nd₂Fe₁₄B. Actual parameters may differ from theoretical values. Use these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
MPL 40x20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2052 Gs 205.2 mT	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N	crushing
1 mm	1956 Gs 195.6 mT	9.69 kg / 21.37 lbs 9693.2 g / 95.1 N	medium risk
2 mm	1839 Gs 183.9 mT	8.57 kg / 18.89 lbs 8570.5 g / 84.1 N	medium risk
3 mm	1711 Gs 171.1 mT	7.41 kg / 16.34 lbs 7413.1 g / 72.7 N	medium risk
5 mm	1444 Gs 144.4 mT	5.28 kg / 11.65 lbs 5282.9 g / 51.8 N	medium risk
10 mm	888 Gs 88.8 mT	2.00 kg / 4.40 lbs 1996.5 g / 19.6 N	safe
15 mm	545 Gs 54.5 mT	0.75 kg / 1.66 lbs 752.0 g / 7.4 N	safe
20 mm	346 Gs 34.6 mT	0.30 kg / 0.67 lbs 302.9 g / 3.0 N	safe
30 mm	156 Gs 15.6 mT	0.06 kg / 0.14 lbs 61.9 g / 0.6 N	safe
50 mm	46 Gs 4.6 mT	0.01 kg / 0.01 lbs 5.4 g / 0.1 N	safe

Magnetic force weakens sharply per each millimeter of spacing. Remember that even the smallest gap (e.g., contamination, varnish, veneer) noticeably reduces the pull force. Magnets hold strongest during direct contact; gap weakens the power. Notice how quickly the load capacity drop, when the product does not touch directly to the metal substrate. When designing the mounting, discard redundant distances.

Table 2: Shear force (vertical surface)
MPL 40x20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.13 kg / 4.70 lbs 2134.0 g / 20.9 N
1 mm	Stal (~0.2)	1.94 kg / 4.27 lbs 1938.0 g / 19.0 N
2 mm	Stal (~0.2)	1.71 kg / 3.78 lbs 1714.0 g / 16.8 N
3 mm	Stal (~0.2)	1.48 kg / 3.27 lbs 1482.0 g / 14.5 N
5 mm	Stal (~0.2)	1.06 kg / 2.33 lbs 1056.0 g / 10.4 N
10 mm	Stal (~0.2)	0.40 kg / 0.88 lbs 400.0 g / 3.9 N
15 mm	Stal (~0.2)	0.15 kg / 0.33 lbs 150.0 g / 1.5 N
20 mm	Stal (~0.2)	0.06 kg / 0.13 lbs 60.0 g / 0.6 N
30 mm	Stal (~0.2)	0.01 kg / 0.03 lbs 12.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N

The table below calculates the theoretical shear load sufficient to initiate the downward movement of the magnet downwards against a upright metal surface (considering typical friction coefficient). The holding force depends on the gap size between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.20 kg / 7.06 lbs 3201.0 g / 31.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.13 kg / 4.70 lbs 2134.0 g / 20.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.07 kg / 2.35 lbs 1067.0 g / 10.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.34 kg / 11.76 lbs 5335.0 g / 52.3 N

When placing a magnet on a upright plane (e.g., a board), it you can count on only approx. 1/5 of its maximum pull force. Gravitational force and a weak degree of grip mean that holders move down faster than they pop off the substrate. Designing a wall mount? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a painted metal, the element will slip down under a significantly smaller weight. Using a rubber pad can drastically improve the result.

Table 4: Material efficiency (saturation) - power losses
MPL 40x20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.53 kg / 1.18 lbs 533.5 g / 5.2 N
1 mm	13%	1.33 kg / 2.94 lbs 1333.8 g / 13.1 N
2 mm	25%	2.67 kg / 5.88 lbs 2667.5 g / 26.2 N
3 mm	38%	4.00 kg / 8.82 lbs 4001.2 g / 39.3 N
5 mm	63%	6.67 kg / 14.70 lbs 6668.8 g / 65.4 N
10 mm	100%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N
11 mm	100%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N
12 mm	100%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N

A thin metal plate is not enough to take in the full magnetic flux, which weakens actual performance of the holder. If you mount a strong magnet to a weak sheet, the magnetism will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's power, you require a sufficiently solid backing of steel. The material oversaturation causes that on delicate walls (e.g., car bodies), the magnet holds weaker. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MPL 40x20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N	OK
40 °C	-2.2%	10.44 kg / 23.01 lbs 10435.3 g / 102.4 N	OK
60 °C	-4.4%	10.20 kg / 22.49 lbs 10200.5 g / 100.1 N
80 °C	-6.6%	9.97 kg / 21.97 lbs 9965.8 g / 97.8 N
100 °C	-28.8%	7.60 kg / 16.75 lbs 7597.0 g / 74.5 N

Classic neodymiums change their properties power past the thermal threshold. Watch out for overheating – excessive heat can permanently damage this product. As the temperature rises, the neodymium's capacity briefly drops. Refrain from using this magnet near heat sources higher than its operating temperature limit. Ignoring the limit will result in destruction of magnetism.

*Technical advisory: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) may lose charge permanently at lower temperatures than taller cylinders. Red status in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 40x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	20.78 kg / 45.80 lbs 3 495 Gs	3.12 kg / 6.87 lbs 3116 g / 30.6 N	N/A
1 mm	19.88 kg / 43.83 lbs 4 015 Gs	2.98 kg / 6.57 lbs 2982 g / 29.3 N	17.89 kg / 39.44 lbs ~0 Gs
2 mm	18.87 kg / 41.61 lbs 3 912 Gs	2.83 kg / 6.24 lbs 2831 g / 27.8 N	16.99 kg / 37.45 lbs ~0 Gs
3 mm	17.80 kg / 39.24 lbs 3 800 Gs	2.67 kg / 5.89 lbs 2670 g / 26.2 N	16.02 kg / 35.32 lbs ~0 Gs
5 mm	15.56 kg / 34.30 lbs 3 552 Gs	2.33 kg / 5.14 lbs 2334 g / 22.9 N	14.00 kg / 30.87 lbs ~0 Gs
10 mm	10.29 kg / 22.68 lbs 2 888 Gs	1.54 kg / 3.40 lbs 1543 g / 15.1 N	9.26 kg / 20.41 lbs ~0 Gs
20 mm	3.89 kg / 8.57 lbs 1 776 Gs	0.58 kg / 1.29 lbs 583 g / 5.7 N	3.50 kg / 7.71 lbs ~0 Gs
50 mm	0.26 kg / 0.57 lbs 456 Gs	0.04 kg / 0.08 lbs 39 g / 0.4 N	0.23 kg / 0.51 lbs ~0 Gs
60 mm	0.12 kg / 0.27 lbs 313 Gs	0.02 kg / 0.04 lbs 18 g / 0.2 N	0.11 kg / 0.24 lbs ~0 Gs
70 mm	0.06 kg / 0.13 lbs 221 Gs	0.01 kg / 0.02 lbs 9 g / 0.1 N	0.05 kg / 0.12 lbs ~0 Gs
80 mm	0.03 kg / 0.07 lbs 162 Gs	0.00 kg / 0.01 lbs 5 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs
90 mm	0.02 kg / 0.04 lbs 121 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
100 mm	0.01 kg / 0.02 lbs 93 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs

Two magnetic products interact from a much further distance than a magnet and steel combination. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of action. Designing a solid fastener? Apply two magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the impact force is huge. The levitation is slightly lower than the attraction, but still impressive.
*Flux density in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Important: Results apply to friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MPL 40x20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	11.5 cm
Hearing aid	10 Gs (1.0 mT)	9.0 cm
Mechanical watch	20 Gs (2.0 mT)	7.0 cm
Mobile device	40 Gs (4.0 mT)	5.5 cm
Car key	50 Gs (5.0 mT)	5.0 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field poses a large risk to electronic devices and pacemakers. These NdFeB products generate a flux that destroys function of digital equipment. Be aware: the invisible magnetic field acts through matter and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MPL 40x20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.13 km/h (5.87 m/s)	0.52 J
30 mm	33.06 km/h (9.18 m/s)	1.27 J
50 mm	42.54 km/h (11.82 m/s)	2.09 J
100 mm	60.15 km/h (16.71 m/s)	4.19 J

Neodymium magnets are delicate – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can cause material chips or injury to fingers. Always hold the magnet during mounting so it doesn't hit with great force against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear eye protection when playing with powerful specimens.

Table 9: Surface protection spec
MPL 40x20x5 / 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: Construction data (Flux)
MPL 40x20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	18 042 Mx	180.4 µWb
P_c Coefficient	0.23	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data for generator designers as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MPL 40x20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	10.67 kg	Standard
Water (riverbed)	12.22 kg (+1.55 kg buoyancy gain)	+14.5%

Corrosion warning: 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Caution: On a vertical surface, the magnet holds only ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. computer case) significantly reduces 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) = 0.23

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%

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: 020160-2026

Measurement Calculator

Force (pull)

lbs

Field Strength

Gauss (Gs)

Induction (T)

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Model MPL 40x20x5 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 104.63 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.

The key to success is sliding 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. Watch your fingers! Magnets with a force of 10.67 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 40x20x5 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 10.67 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 40x20x5 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. 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), 20 mm (width), and 5 mm (thickness). The key parameter here is the holding force amounting to approximately 10.67 kg (force ~104.63 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of rare earth magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:

They do not lose magnetism, even after approximately ten years – the drop in power is only ~1% (based on measurements),
They possess excellent resistance to weakening of magnetic properties when exposed to opposing magnetic fields,
A magnet with a metallic silver surface has an effective appearance,
They show high magnetic induction at the operating surface, which improves attraction properties,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
Thanks to modularity in forming and the capacity to customize to individual projects,
Significant place in electronics industry – they serve a role in mass storage devices, drive modules, advanced medical instruments, also industrial machines.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength 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
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited possibility of producing threads in the magnet and complex forms - recommended is cover - mounting mechanism.
Potential hazard to health – tiny shards of magnets are risky, if swallowed, which gains importance in the context of child safety. Furthermore, small elements of these products are able to be problematic in diagnostics medical when they are in the body.
With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum holding power of the magnet – what contributes to it?

Information about lifting capacity was defined for ideal contact conditions, assuming:

with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
with a thickness no less than 10 mm
characterized by smoothness
without the slightest clearance between the magnet and steel
for force applied at a right angle (in the magnet axis)
at temperature room level

Key elements affecting lifting force

It is worth knowing that the magnet holding may be lower subject to the following factors, in order of importance:

Space between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Hardened steels may attract less.
Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
Temperature – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Electronic hazard

Data protection: Strong magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Danger to the youngest

Strictly store magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.

Immense force

Exercise caution. Neodymium magnets act from a long distance and connect with massive power, often faster than you can move away.

Mechanical processing

Drilling and cutting of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Serious injuries

Protect your hands. Two large magnets will snap together instantly with a force of massive weight, destroying everything in their path. Be careful!

Magnetic interference

Remember: rare earth magnets produce a field that confuses precision electronics. Maintain a separation from your phone, tablet, and GPS.

Maximum temperature

Control the heat. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.

Warning for heart patients

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

Magnet fragility

Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them cracking into shards.

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation happens, immediately stop handling magnets and wear gloves.

Safety First! Want to know more? Read our article: Are neodymium magnets dangerous?

MPL 40x20x5 / N38 - lamellar magnet

Technical data - MPL 40x20x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - technical parameters

Table 1: Static force (pull vs distance) - interaction chart MPL 40x20x5 / N38

Table 2: Shear force (vertical surface) MPL 40x20x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 40x20x5 / N38

Table 4: Material efficiency (saturation) - power losses MPL 40x20x5 / N38

Table 5: Thermal stability (stability) - thermal limit MPL 40x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MPL 40x20x5 / N38

Table 7: Hazards (implants) - precautionary measures MPL 40x20x5 / N38

Table 8: Impact energy (kinetic energy) - warning MPL 40x20x5 / N38

Table 9: Surface protection spec MPL 40x20x5 / N38

Table 10: Construction data (Flux) MPL 40x20x5 / N38

Table 11: Physics of underwater searching MPL 40x20x5 / N38

1. Shear force

2. Efficiency vs thickness

3. Power loss vs temp

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

Material specification

Environmental data

Force (pull)

Field Strength

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Strengths and weaknesses of rare earth magnets.

Benefits

Cons

Holding force characteristics

Maximum holding power of the magnet – what contributes to it?

Key elements affecting lifting force

Safety rules for work with neodymium magnets

Electronic hazard

Danger to the youngest

Immense force

Mechanical processing

Serious injuries

Magnetic interference

Maximum temperature

Warning for heart patients

Magnet fragility

Allergic reactions

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - interaction chart
MPL 40x20x5 / N38

Table 2: Shear force (vertical surface)
MPL 40x20x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x5 / N38

Table 4: Material efficiency (saturation) - power losses
MPL 40x20x5 / N38

Table 5: Thermal stability (stability) - thermal limit
MPL 40x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 40x20x5 / N38

Table 7: Hazards (implants) - precautionary measures
MPL 40x20x5 / N38

Table 8: Impact energy (kinetic energy) - warning
MPL 40x20x5 / N38

Table 9: Surface protection spec
MPL 40x20x5 / N38

Table 10: Construction data (Flux)
MPL 40x20x5 / N38

Table 11: Physics of underwater searching
MPL 40x20x5 / N38