Product available Ships tomorrow

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

see properties »

4.87 ZŁ with VAT / pcs + price for transport

3.96 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.96 ZŁ

4.87 ZŁ

price from 200 pcs

3.72 ZŁ

4.58 ZŁ

price from 650 pcs

3.48 ZŁ

4.29 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have problems deciding?

Call us now +48 22 499 98 98 if you prefer get in touch through inquiry form our website.
Weight and structure of magnets can be tested on our power calculator.

Order by 14:00 and we’ll ship today!

Technical of the product - 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 simulation of the assembly - technical parameters

Presented data represent the direct effect of a physical calculation. Results are based on models for the material Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Please consider these data as a reference point when designing systems.

Table 1: Static force (force vs gap) - power drop
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	warning
1 mm	2413 Gs 241.3 mT	7.14 kg / 15.75 pounds 7143.1 g / 70.1 N	warning
2 mm	2044 Gs 204.4 mT	5.13 kg / 11.31 pounds 5128.9 g / 50.3 N	warning
3 mm	1703 Gs 170.3 mT	3.56 kg / 7.85 pounds 3559.5 g / 34.9 N	warning
5 mm	1173 Gs 117.3 mT	1.69 kg / 3.72 pounds 1688.2 g / 16.6 N	safe
10 mm	522 Gs 52.2 mT	0.33 kg / 0.74 pounds 334.9 g / 3.3 N	safe
15 mm	277 Gs 27.7 mT	0.09 kg / 0.21 pounds 94.2 g / 0.9 N	safe
20 mm	163 Gs 16.3 mT	0.03 kg / 0.07 pounds 32.8 g / 0.3 N	safe
30 mm	69 Gs 6.9 mT	0.01 kg / 0.01 pounds 5.8 g / 0.1 N	safe
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 pounds 0.5 g / 0.0 N	safe

Pulling power drops drastically with every subsequent millimeter of spacing. Keep in mind that every additional insulation layer (e.g., contamination, paint, veneer) strongly weakens the grip. Neodymiums work strongest at the point of direct contact; gap kills the force. Notice how rapidly the pull force fall, when the product does not adhere flatly to the metal substrate. When calculating the mounting, avoid redundant distances.

Table 2: Shear 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

The table below shows the theoretical holding capacity required to cause the sliding of the magnet down on a vertical steel wall (considering typical friction). This parameter depends on the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
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 holder on a vertical plane (e.g., a car body), it will only hold barely about 20%-30% of its nominal power. Gravitational force and a weak degree of grip cause that products slide down faster than they pop off the substrate. Want to create a vertical fastening? Note that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the element will slip down under a noticeably lighter cargo. Application of an anti-slip coating can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - 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 too thin steel is incapable of absorb the entire magnetic field, which wastes potential of the holder. Should you install a neodymium to a too thin substrate, the flux will penetrate right through and the attraction force will be weaker. To achieve full efficiency of this magnet's potential, you need a suitably thick backing of steel. The saturation effect means that on sheet metal structures (e.g., thin profiles), the holder holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal stability (material behavior) - resistance threshold
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

Classic neodymiums lose strength after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly demagnetize this magnet. As the temperature rises, the magnet's capacity temporarily drops. Do not use this magnet close to heaters exceeding its safe range. Too high temperature will cause destruction of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Warning indicator in the table indicates permanent field degradation for this specific geometry.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (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 magnetic products interact from a significantly greater distance than a magnet and sheet setup. Such a system of two magnets produces a massive flux and a wider radius of action. Want to build a strong closure? Utilize two neodymiums instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the impact force is extreme. The levitation is marginally weaker than the attraction, but still large.
*Field value for N-N configuration drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Attention: Calculations demonstrate sliding force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
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
Phone / Smartphone	40 Gs (4.0 mT)	4.0 cm
Car key	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

Extremely neodym field is a real danger to IT equipment as well as pacemakers. These NdFeB products produce a field that destroys function of digital equipment. Remember: the unseen radiation acts through matter and glass. Special caution must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, speakers, and screens. 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

NdFeB products are prone to chipping – a violent impact against metal causes immediate chipping. Control the attraction moment – a magnet released freely speeds with massive force. Impact energy can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when playing 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)

The following table defines the conditions under which this product can be safely used. Moisture resistance is crucial for installations in bathrooms or outdoors.

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

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

Flux value passing through the magnet pole. Essential parameter in coil applications as well as sensors. P_c value determines 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%

Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Sliding resistance

*Caution: On a vertical surface, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

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

3. Power loss vs temp

*For standard magnets, 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%

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: 020150-2026

Measurement Calculator

Force (pull)

Kilograms (kg)

Force (N)

Force in lbs

Magnetic Field

Tesla (T)

Simply populate one field, and the calculator fill in everything else instantly.

Other proposals

Product available Ships tomorrow

MPL 50x30x4 / N38 - lamellar magnet

25.83 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x275 [2xM8] / N52 - magnetic separator

836.40 ZŁ brutto / pcs

Product available Ships tomorrow

MW 45x20 / N38 - cylindrical magnet

84.45 ZŁ brutto / pcs

Product available Ships tomorrow

MW 8x3 / N38 - cylindrical magnet

0.701 ZŁ brutto / pcs

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x10x4 mm and a weight of 12 g, guarantees the highest quality connection. As a block magnet with high power (approx. 9.31 kg), this product is available immediately from our warehouse in Poland. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 9.31 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 40x10x4 / N38 are the foundation for many industrial devices, such as magnetic separators 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. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 40x10x4 / N38, we recommend utilizing two-component adhesives (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), 10 mm (width), and 4 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 9.31 kg (force ~91.33 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Benefits

Besides their magnetic performance, neodymium magnets are valued for these benefits:

Their strength remains stable, and after approximately ten years it drops only by ~1% (according to research),
Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
Thanks to the metallic finish, the coating of nickel, gold-plated, or silver-plated gives an aesthetic appearance,
Magnetic induction on the surface of the magnet remains maximum,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of precise creating and adapting to complex requirements,
Key role in high-tech industry – they find application in hard drives, brushless drives, medical devices, and modern systems.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
Due to limitations in realizing threads and complicated shapes in magnets, we recommend using cover - magnetic holder.
Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small components of these magnets can be problematic in diagnostics medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Magnet power was defined for ideal contact conditions, including:

with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
whose thickness is min. 10 mm
characterized by lack of roughness
without any insulating layer between the magnet and steel
under vertical application of breakaway force (90-degree angle)
in temp. approx. 20°C

Determinants of practical lifting force of a magnet

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

Gap between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Direction of force – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Steel type – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was carried out 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 fivefold. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets

Eye protection

Neodymium magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets will cause them shattering into shards.

Do not drill into magnets

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

Life threat

Warning for patients: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to handle the magnets.

Bodily injuries

Pinching hazard: The attraction force is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.

Adults only

Only for adults. Small elements can be swallowed, leading to severe trauma. Keep out of reach of kids and pets.

Caution required

Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Cards and drives

Powerful magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.

Nickel coating and allergies

It is widely known that nickel (standard magnet coating) is a strong allergen. If you have an allergy, avoid touching magnets with bare hands or choose coated magnets.

Threat to navigation

GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Permanent damage

Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Warning! Learn more about hazards in the article: Safety of working with magnets.

MPL 40x10x4 / N38 - lamellar magnet

Technical of the product - MPL 40x10x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the assembly - technical parameters

Table 1: Static force (force vs gap) - power drop MPL 40x10x4 / N38

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

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 40x10x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 40x10x4 / N38

Table 5: Thermal stability (material behavior) - resistance threshold MPL 40x10x4 / N38

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

Table 7: Safety (HSE) (implants) - precautionary measures 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 (Pc) MPL 40x10x4 / N38

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

1. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Material specification

Sustainability

Force (pull)

Magnetic Field

Other proposals

MPL 50x30x4 / N38 - lamellar magnet

SM 25x275 [2xM8] / N52 - magnetic separator

MW 45x20 / N38 - cylindrical magnet

MW 8x3 / N38 - cylindrical magnet

Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Disadvantages

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Determinants of practical lifting force of a magnet

H&S for magnets

Eye protection

Do not drill into magnets

Life threat

Bodily injuries

Adults only

Caution required

Cards and drives

Nickel coating and allergies

Threat to navigation

Permanent damage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - power drop
MPL 40x10x4 / N38

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

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x10x4 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 40x10x4 / N38

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 40x10x4 / N38

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

Table 7: Safety (HSE) (implants) - precautionary measures
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 (P_c)
MPL 40x10x4 / N38

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

Strengths and weaknesses of Nd₂Fe₁₄B magnets.