Product available Ships in 2 days

MPL 40x5x3 / 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 020402

GTIN/EAN: 5906301811916

length

40 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

4.5 g

Magnetization Direction

↑ axial

Load capacity

7.33 kg / 71.91 N

Magnetic Induction

348.83 mT / 3488 Gs

Coating

[NiCuNi] Nickel

view properties »

6.65 ZŁ with VAT / pcs + price for transport

5.41 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

5.41 ZŁ

6.65 ZŁ

price from 150 pcs

5.09 ZŁ

6.26 ZŁ

price from 500 pcs

4.76 ZŁ

5.86 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have questions?

Call us now +48 22 499 98 98 otherwise send us a note using form through our site.
Force along with structure of a magnet can be analyzed with our force calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical - MPL 40x5x3 / N38 - lamellar magnet

Specification / characteristics - MPL 40x5x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020402
GTIN/EAN	5906301811916
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	5 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	4.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.33 kg / 71.91 N
Magnetic Induction ~ ?	348.83 mT / 3488 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x5x3 / N38 - lamellar magnet

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

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Physical modeling of the magnet - technical parameters

Presented values represent the direct effect of a physical calculation. Values were calculated on models for the class Nd₂Fe₁₄B. Actual parameters may differ from theoretical values. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs gap) - characteristics
MPL 40x5x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3485 Gs 348.5 mT	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N	warning
1 mm	2529 Gs 252.9 mT	3.86 kg / 8.51 pounds 3859.9 g / 37.9 N	warning
2 mm	1741 Gs 174.1 mT	1.83 kg / 4.03 pounds 1829.7 g / 17.9 N	safe
3 mm	1217 Gs 121.7 mT	0.89 kg / 1.97 pounds 893.7 g / 8.8 N	safe
5 mm	664 Gs 66.4 mT	0.27 kg / 0.59 pounds 265.9 g / 2.6 N	safe
10 mm	235 Gs 23.5 mT	0.03 kg / 0.07 pounds 33.5 g / 0.3 N	safe
15 mm	116 Gs 11.6 mT	0.01 kg / 0.02 pounds 8.2 g / 0.1 N	safe
20 mm	67 Gs 6.7 mT	0.00 kg / 0.01 pounds 2.7 g / 0.0 N	safe
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 pounds 0.5 g / 0.0 N	safe
50 mm	8 Gs 0.8 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Pulling power weakens drastically per each millimeter of gap. Note that even a very thin break (e.g., dirt, varnish, rust) significantly weakens the grip. Magnetic products work optimally during direct contact; distance weakens the power. Notice how flashily the load capacity plummet, when the product does not touch tightly to the metal substrate. When designing the assembly, eliminate redundant distances.

Table 2: Shear load (vertical surface)
MPL 40x5x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.47 kg / 3.23 pounds 1466.0 g / 14.4 N
1 mm	Stal (~0.2)	0.77 kg / 1.70 pounds 772.0 g / 7.6 N
2 mm	Stal (~0.2)	0.37 kg / 0.81 pounds 366.0 g / 3.6 N
3 mm	Stal (~0.2)	0.18 kg / 0.39 pounds 178.0 g / 1.7 N
5 mm	Stal (~0.2)	0.05 kg / 0.12 pounds 54.0 g / 0.5 N
10 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data calculates the approximate shear load needed to cause the downward movement of the magnet down on a upright steel plate (considering typical friction coefficient). The holding force is a function of the gap size between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 40x5x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.20 kg / 4.85 pounds 2199.0 g / 21.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.47 kg / 3.23 pounds 1466.0 g / 14.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.62 pounds 733.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.67 kg / 8.08 pounds 3665.0 g / 36.0 N

When mounting a holder on a upright plane (e.g., a fridge), it you can count on barely about 1/5 of its nominal power. Gravitational force as well as a low friction coefficient cause that products slip easier than they detach. Designing a wall mount? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will give way down under a significantly smaller load. Utilizing a rubberized layer can effectively improve the result.

Table 4: Material efficiency (saturation) - power losses
MPL 40x5x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.73 kg / 1.62 pounds 733.0 g / 7.2 N
1 mm	25%	1.83 kg / 4.04 pounds 1832.5 g / 18.0 N
2 mm	50%	3.67 kg / 8.08 pounds 3665.0 g / 36.0 N
3 mm	75%	5.50 kg / 12.12 pounds 5497.5 g / 53.9 N
5 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N
10 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N
11 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N
12 mm	100%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N

A thin sheet is not enough to focus the entire magnetic field, which weakens actual performance of the holder. If you attach a powerful product to a thin surface, the field will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's potential, you need a suitably thick piece of metal. The saturation effect causes that on thin elements (e.g., car bodies), the product shows lower pull force. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x5x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.33 kg / 16.16 pounds 7330.0 g / 71.9 N	OK
40 °C	-2.2%	7.17 kg / 15.80 pounds 7168.7 g / 70.3 N	OK
60 °C	-4.4%	7.01 kg / 15.45 pounds 7007.5 g / 68.7 N
80 °C	-6.6%	6.85 kg / 15.09 pounds 6846.2 g / 67.2 N
100 °C	-28.8%	5.22 kg / 11.51 pounds 5219.0 g / 51.2 N

Standard neodymium magnets irreversibly lose parameters above the temperature limit. Protect against heat – high temperature can irreversibly demagnetize this magnet. As the temperature rises, the neodymium's force temporarily drops. Avoid using this product in hot environments exceeding its operating temperature limit. Exceeding the critical threshold will lead to permanent loss of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress compared to rod magnets. Warning indicator in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MPL 40x5x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	14.97 kg / 33.01 pounds 4 697 Gs	2.25 kg / 4.95 pounds 2246 g / 22.0 N	N/A
1 mm	11.16 kg / 24.61 pounds 6 017 Gs	1.67 kg / 3.69 pounds 1674 g / 16.4 N	10.04 kg / 22.15 pounds ~0 Gs
2 mm	7.88 kg / 17.38 pounds 5 058 Gs	1.18 kg / 2.61 pounds 1183 g / 11.6 N	7.10 kg / 15.64 pounds ~0 Gs
3 mm	5.44 kg / 11.99 pounds 4 201 Gs	0.82 kg / 1.80 pounds 816 g / 8.0 N	4.90 kg / 10.79 pounds ~0 Gs
5 mm	2.59 kg / 5.71 pounds 2 899 Gs	0.39 kg / 0.86 pounds 389 g / 3.8 N	2.33 kg / 5.14 pounds ~0 Gs
10 mm	0.54 kg / 1.20 pounds 1 328 Gs	0.08 kg / 0.18 pounds 81 g / 0.8 N	0.49 kg / 1.08 pounds ~0 Gs
20 mm	0.07 kg / 0.15 pounds 471 Gs	0.01 kg / 0.02 pounds 10 g / 0.1 N	0.06 kg / 0.14 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 83 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 55 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 38 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 27 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 20 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 15 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel combination. Such a system of two magnets generates a stronger field and a larger range of operation. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still impressive.
*The magnetic induction between like poles drops to ~0 Gs at the geometric center between the magnets (due to field cancellation).
Attention: Estimates apply to shear force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MPL 40x5x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Extremely neodym field is a large risk to electronic devices as well as medical implants. These neodymiums produce a flux that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MPL 40x5x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	40.82 km/h (11.34 m/s)	0.29 J
30 mm	70.50 km/h (19.58 m/s)	0.86 J
50 mm	91.02 km/h (25.28 m/s)	1.44 J
100 mm	128.71 km/h (35.75 m/s)	2.88 J

Magnetic elements are delicate – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when handling with large magnets.

Table 9: Surface protection spec
MPL 40x5x3 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MPL 40x5x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 123 Mx	51.2 µWb
P_c Coefficient	0.27	Low (Flat)

Flux value emitted by the pole surface. Essential parameter in coil applications and motors. P_c value defines the magnet's operating point.

Table 11: Submerged application
MPL 40x5x3 / N38

Environment	Effective steel pull	Effect
Air (land)	7.33 kg	Standard
Water (riverbed)	8.39 kg (+1.06 kg buoyancy gain)	+14.5%

Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

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

2. Plate thickness effect

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

3. Temperature resistance

*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) = 0.27

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 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%

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: 020402-2026

Magnet Unit Converter

Force (pull)

Kilograms (kg)

Force in lbs

Magnetic Induction

Gauss (Gs)

Just complete any input, and the converter fill in the rest automatically.

Other deals

Product available Ships in 2 days

SM 32x275 [2xM8] / N42 - magnetic separator

824.10 ZŁ brutto / pcs

Product available Ships in 2 days

BM 700x180x75 [8xM10] - magnetic beam

6150.00 ZŁ brutto / pcs

Product available Ships in 2 days

UMH 25x8x45 [M5] / N38 - magnetic holder with hook

14.49 ZŁ brutto / pcs

Product available Ships in 2 days

ZM XMAG2 210 elementów - magnetic toy

86.10 ZŁ brutto / pcs

Component MPL 40x5x3 / N38 features a flat shape and professional pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 71.91 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating protects 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 40x5x3 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 40x5x3 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 7.33 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 40x5x3 / 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).

Standardly, the MPL 40x5x3 / N38 model is magnetized axially (dimension 3 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), 5 mm (width), and 3 mm (thickness). The key parameter here is the holding force amounting to approximately 7.33 kg (force ~71.91 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Strengths

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

Their magnetic field remains stable, and after approximately 10 years it decreases only by ~1% (according to research),
Magnets effectively resist against loss of magnetization caused by external fields,
The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Considering the option of precise forming and adaptation to unique needs, NdFeB magnets can be created in a wide range of geometric configurations, which makes them more universal,
Significant place in innovative solutions – they are used in hard drives, brushless drives, medical devices, as well as multitasking production systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Drawbacks and weaknesses of neodymium magnets and ways of using them

At strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in producing nuts and complicated shapes in magnets, we propose using casing - magnetic holder.
Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Maximum magnetic pulling force – what it depends on?

Information about lifting capacity was determined for optimal configuration, taking into account:

with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
possessing a massiveness of min. 10 mm to ensure full flux closure
characterized by even structure
without any air gap between the magnet and steel
for force applied at a right angle (in the magnet axis)
in temp. approx. 20°C

Lifting capacity in practice – influencing factors

Holding efficiency is affected by working environment parameters, including (from priority):

Distance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Chemical composition of the base – low-carbon steel attracts best. Alloy steels reduce magnetic permeability and lifting capacity.
Smoothness – full contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
Temperature influence – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Operating temperature

Do not overheat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Threat to navigation

GPS units and smartphones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Handling rules

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Crushing force

Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!

Nickel coating and allergies

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation appears, immediately stop handling magnets and wear gloves.

Dust is flammable

Drilling and cutting of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Protective goggles

Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.

Cards and drives

Powerful magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Stay away of min. 10 cm.

Do not give to children

Absolutely store magnets away from children. Choking hazard is significant, and the effects of magnets connecting inside the body are life-threatening.

ICD Warning

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Caution! Looking for details? Check our post: Are neodymium magnets dangerous?

MPL 40x5x3 / N38 - lamellar magnet

Technical - MPL 40x5x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the magnet - technical parameters

Table 1: Static force (force vs gap) - characteristics MPL 40x5x3 / N38

Table 2: Shear load (vertical surface) MPL 40x5x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull MPL 40x5x3 / N38

Table 4: Material efficiency (saturation) - power losses MPL 40x5x3 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MPL 40x5x3 / N38

Table 6: Two magnets (repulsion) - forces in the system MPL 40x5x3 / N38

Table 7: Protective zones (implants) - precautionary measures MPL 40x5x3 / N38

Table 8: Dynamics (kinetic energy) - collision effects MPL 40x5x3 / N38

Table 9: Surface protection spec MPL 40x5x3 / N38

Table 10: Electrical data (Flux) MPL 40x5x3 / N38

Table 11: Submerged application MPL 40x5x3 / N38

1. Vertical hold

2. Plate thickness effect

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Force (pull)

Magnetic Induction

Other deals

SM 32x275 [2xM8] / N42 - magnetic separator

BM 700x180x75 [8xM10] - magnetic beam

UMH 25x8x45 [M5] / N38 - magnetic holder with hook

ZM XMAG2 210 elementów - magnetic toy

Strengths as well as weaknesses of Nd2Fe14B magnets.

Strengths

Weaknesses

Lifting parameters

Maximum magnetic pulling force – what it depends on?

Lifting capacity in practice – influencing factors

Safety rules for work with neodymium magnets

Operating temperature

Threat to navigation

Handling rules

Crushing force

Nickel coating and allergies

Dust is flammable

Protective goggles

Cards and drives

Do not give to children

ICD Warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - characteristics
MPL 40x5x3 / N38

Table 2: Shear load (vertical surface)
MPL 40x5x3 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MPL 40x5x3 / N38

Table 4: Material efficiency (saturation) - power losses
MPL 40x5x3 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x5x3 / N38

Table 6: Two magnets (repulsion) - forces in the system
MPL 40x5x3 / N38

Table 7: Protective zones (implants) - precautionary measures
MPL 40x5x3 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MPL 40x5x3 / N38

Table 9: Surface protection spec
MPL 40x5x3 / N38

Table 10: Electrical data (Flux)
MPL 40x5x3 / N38

Table 11: Submerged application
MPL 40x5x3 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.