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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

see properties »

12.24 ZŁ with VAT / pcs + price for transport

9.95 ZŁ net + 23% VAT / pcs

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Technical details - 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 assembly - data

Presented values represent the result of a physical analysis. Results rely on algorithms for the material Nd₂Fe₁₄B. Operational performance might slightly deviate from the simulation results. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
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	critical level
1 mm	1956 Gs 195.6 mT	9.69 kg / 21.37 lbs 9693.2 g / 95.1 N	warning
2 mm	1839 Gs 183.9 mT	8.57 kg / 18.89 lbs 8570.5 g / 84.1 N	warning
3 mm	1711 Gs 171.1 mT	7.41 kg / 16.34 lbs 7413.1 g / 72.7 N	warning
5 mm	1444 Gs 144.4 mT	5.28 kg / 11.65 lbs 5282.9 g / 51.8 N	warning
10 mm	888 Gs 88.8 mT	2.00 kg / 4.40 lbs 1996.5 g / 19.6 N	low risk
15 mm	545 Gs 54.5 mT	0.75 kg / 1.66 lbs 752.0 g / 7.4 N	low risk
20 mm	346 Gs 34.6 mT	0.30 kg / 0.67 lbs 302.9 g / 3.0 N	low risk
30 mm	156 Gs 15.6 mT	0.06 kg / 0.14 lbs 61.9 g / 0.6 N	low risk
50 mm	46 Gs 4.6 mT	0.01 kg / 0.01 lbs 5.4 g / 0.1 N	low risk

Pulling power drops drastically with every subsequent millimeter of distance. Keep in mind that even the smallest gap (e.g., contamination, paint, veneer) significantly weakens the grip. Magnets hold strongest at the point of direct contact; gap drastically cuts the power. See how rapidly the load capacity plummet, when the magnet does not adhere directly to the steel surface. When calculating the assembly, discard additional spacers.

Table 2: Vertical capacity (wall)
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

This section presents the estimated holding capacity sufficient to cause the shifting of the magnet down against a upright steel wall (considering typical friction coefficient). This parameter is relative to the separation distance 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 mounting a magnet on a vertical plane (e.g., a car body), it you can count on just approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that products slide down faster than they detach. Want to create a hanger? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the holder will slide down under a significantly smaller weight. Application of an anti-slip coating can effectively increase the grip.

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 incapable of focus the entire magnetic field, which squanders power of the holder. If you mount a strong magnet to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To achieve 100% of this neodymium's potential, you require a sufficiently solid backing of steel. The material oversaturation means that on delicate walls (e.g., appliance housings), the holder works worse. We suggest choosing the steel dimension according to the table below.

Table 5: Working in heat (stability) - power drop
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 irreversibly lose strength past the thermal threshold. Avoid high temperatures – heat can permanently destroy this magnet. As the temperature rises, the magnet's force momentarily lowers. Avoid using this product in hot environments higher than its working range. Exceeding the critical threshold will lead to permanent loss of magnetism.

*Important note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) are more susceptible to demagnetization sooner than taller cylinders. Red status in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 40x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 magnets attract each other from a significantly greater distance than a magnet and sheet setup. Such a system of magnet-to-magnet creates a more powerful interaction and a larger range of action. Designing a solid fastener? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the impact force is huge. The levitation is marginally weaker than the attraction, but still significant.
*Flux density in repulsion mode reaches ~0 Gs in the exact middle between the magnets (due to field cancellation).
Note: Estimates show sliding force of two same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - 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
Phone / Smartphone	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

Powerful magnet radiation is a real danger to IT equipment and medical implants. These NdFeB products generate a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field penetrates the body and plastic. Special caution must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
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 collision with steel risks their cracking. Control the attraction moment – a neodymium left loose becomes dangerous. Impact energy can cause material chips or painful pinches to fingers. Always hold the magnet during bringing near metal so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear eye protection when handling with large magnets.

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)

Neodymium magnets are highly susceptible to corrosion without proper protection. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

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

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

Flux value emitted by the pole surface. Key data in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
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%

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 retains merely ~20% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) significantly weakens the holding force.

3. Temperature resistance

*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

Elemental analysis

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: 020160-2026

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 40x20x5 mm and a weight of 30 g, guarantees the highest quality connection. This rectangular block with a force of 104.63 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

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. To separate the MPL 40x20x5 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, 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 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 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 40x20x5 / N38, we recommend utilizing 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. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 40x20x5 / N38 model is magnetized axially (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (40x20 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 40x20x5 mm, which, at a weight of 30 g, makes it an element with high energy density. It is a magnetic block with dimensions 40x20x5 mm and a self-weight of 30 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their immense strength, neodymium magnets offer the following advantages:

They retain attractive force for nearly 10 years – the drop is just ~1% (according to analyses),
Neodymium magnets prove to be exceptionally resistant to magnetic field loss caused by magnetic disturbances,
The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to present itself better,
Magnetic induction on the surface of the magnet turns out to be extremely intense,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to flexibility in designing and the capacity to customize to unusual requirements,
Huge importance in modern industrial fields – they find application in mass storage devices, electric drive systems, advanced medical instruments, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in small systems

Weaknesses

Cons of neodymium magnets: application proposals

At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in producing threads and complicated shapes in magnets, we propose using a housing - magnetic holder.
Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Highest magnetic holding force – what contributes to it?

The force parameter is a result of laboratory testing conducted under the following configuration:

with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
possessing a thickness of min. 10 mm to ensure full flux closure
with an ideally smooth touching surface
with direct contact (without coatings)
under perpendicular application of breakaway force (90-degree angle)
at room temperature

Practical lifting capacity: influencing factors

In real-world applications, the actual lifting capacity results from several key aspects, ranked from most significant:

Distance (between the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to paint, rust or debris).
Direction of force – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
Base massiveness – too thin sheet does not close the flux, causing part of the power to be wasted into the air.
Material type – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
Plate texture – ground elements ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate decreases the holding force.

Warnings

Combustion hazard

Combustion risk: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Protective goggles

Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.

Threat to electronics

Avoid bringing magnets near a wallet, computer, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.

Phone sensors

A strong magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.

Warning for allergy sufferers

Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop working with magnets and wear gloves.

Do not give to children

Only for adults. Small elements can be swallowed, causing intestinal necrosis. Keep away from kids and pets.

Pinching danger

Risk of injury: The pulling power is so great that it can cause blood blisters, crushing, and broken bones. Use thick gloves.

Implant safety

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Respect the power

Handle with care. Rare earth magnets attract from a distance and snap with huge force, often quicker than you can react.

Thermal limits

Keep cool. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

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

MPL 40x20x5 / N38 - lamellar magnet

Technical details - MPL 40x20x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - data

Table 1: Static pull force (force vs gap) - characteristics MPL 40x20x5 / N38

Table 2: Vertical capacity (wall) 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: Working in heat (stability) - power drop MPL 40x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MPL 40x20x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MPL 40x20x5 / N38

Table 8: Collisions (cracking risk) - collision effects MPL 40x20x5 / N38

Table 9: Surface protection spec MPL 40x20x5 / N38

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

Table 11: Hydrostatics and buoyancy MPL 40x20x5 / N38

1. Shear force

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Sustainability

Pulling force

Field Strength

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Strengths as well as weaknesses of neodymium magnets.

Benefits

Weaknesses

Holding force characteristics

Highest magnetic holding force – what contributes to it?

Practical lifting capacity: influencing factors

Warnings

Combustion hazard

Protective goggles

Threat to electronics

Phone sensors

Warning for allergy sufferers

Do not give to children

Pinching danger

Implant safety

Respect the power

Thermal limits

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - characteristics
MPL 40x20x5 / N38

Table 2: Vertical capacity (wall)
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: Working in heat (stability) - power drop
MPL 40x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 40x20x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MPL 40x20x5 / N38

Table 8: Collisions (cracking risk) - collision effects
MPL 40x20x5 / N38

Table 9: Surface protection spec
MPL 40x20x5 / N38

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

Table 11: Hydrostatics and buoyancy
MPL 40x20x5 / N38