Product available Ships tomorrow

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

technical parameters »

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

Not sure where to buy?

Call us now +48 888 99 98 98 if you prefer send us a note by means of request form through our site.
Force along with appearance of a magnet can be checked on our our magnetic calculator.

Same-day shipping for orders placed before 14:00.

Technical of the product - 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

Technical modeling of the magnet - technical parameters

These information represent the direct effect of a physical calculation. Values are based on algorithms for the material Nd₂Fe₁₄B. Real-world parameters might slightly deviate from the simulation results. Treat these data as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs gap) - interaction chart
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 lbs 7330.0 g / 71.9 N	strong
1 mm	2529 Gs 252.9 mT	3.86 kg / 8.51 lbs 3859.9 g / 37.9 N	strong
2 mm	1741 Gs 174.1 mT	1.83 kg / 4.03 lbs 1829.7 g / 17.9 N	safe
3 mm	1217 Gs 121.7 mT	0.89 kg / 1.97 lbs 893.7 g / 8.8 N	safe
5 mm	664 Gs 66.4 mT	0.27 kg / 0.59 lbs 265.9 g / 2.6 N	safe
10 mm	235 Gs 23.5 mT	0.03 kg / 0.07 lbs 33.5 g / 0.3 N	safe
15 mm	116 Gs 11.6 mT	0.01 kg / 0.02 lbs 8.2 g / 0.1 N	safe
20 mm	67 Gs 6.7 mT	0.00 kg / 0.01 lbs 2.7 g / 0.0 N	safe
30 mm	27 Gs 2.7 mT	0.00 kg / 0.00 lbs 0.5 g / 0.0 N	safe
50 mm	8 Gs 0.8 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Grip strength decreases sharply with every subsequent millimeter of distance. Note that even the smallest gap (e.g., contamination, paint, rust) strongly weakens the grip. Magnetic products work strongest in perfect adhesion; distance weakens the power. Analyze how quickly the parameters plummet, when the magnet does not adhere directly to the metal substrate. When designing the mounting, avoid additional spacers.

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

The following data defines the estimated weight limit required to cause the slippage of the magnet down along a vertical steel plate (considering typical friction coefficient). This parameter depends on the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
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 lbs 2199.0 g / 21.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.47 kg / 3.23 lbs 1466.0 g / 14.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.62 lbs 733.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.67 kg / 8.08 lbs 3665.0 g / 36.0 N

When mounting a element on a vertical wall (e.g., a board), it will only hold barely about 1/5 of nominal attraction strength. Gravity and a low friction coefficient influence the fact that products move down easier than they pop off the substrate. Planning a vertical fastening? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a noticeably lighter cargo. Application of an anti-slip layer can significantly improve the result.

Table 4: Material efficiency (substrate influence) - 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 lbs 733.0 g / 7.2 N
1 mm	25%	1.83 kg / 4.04 lbs 1832.5 g / 18.0 N
2 mm	50%	3.67 kg / 8.08 lbs 3665.0 g / 36.0 N
3 mm	75%	5.50 kg / 12.12 lbs 5497.5 g / 53.9 N
5 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N
10 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N
11 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N
12 mm	100%	7.33 kg / 16.16 lbs 7330.0 g / 71.9 N

A too thin steel is unable to take in the full magnetic flux, which weakens actual performance of the magnet. If you mount a strong magnet to a too thin substrate, the field will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this magnet's potential, you need a suitably thick backing of metal. The saturation phenomenon causes that on delicate walls (e.g., thin profiles), the product holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal stability (stability) - power drop
MPL 40x5x3 / N38

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

Standard neodymium magnets change their properties parameters past the thermal threshold. Protect against heat – excessive heat can permanently destroy this product. With increasing heat, the magnet's capacity briefly drops. Avoid using this magnet close to ovens higher than its working range. Ignoring the limit will result in irreversible degradation of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) may lose charge permanently under lower heat stress compared to rod magnets. Red status in the table signals a risk of irreversible loss for this specific geometry.

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

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

Two magnetic products interact from a significantly greater distance than a magnet and steel combination. Such a system of magnet-to-magnet generates a stronger field and a wider radius of operation. Planning to create a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the collision energy is extreme. The levitation is slightly lower than the attraction, but still large.
*Field value between like poles is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Important: Estimates demonstrate sliding force of two same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
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
Timepiece	20 Gs (2.0 mT)	3.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Remote	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

A strong magnetic field poses a real danger to electronics as well as medical implants. These neodymiums produce a flux that disrupts operation of digital equipment. Be aware: the invisible magnetic field passes through tissues and glass. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - 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

Neodymium magnets are prone to chipping – a collision with steel can result in shattering. Watch the impact speed – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or painful pinches to fingers. Hold the magnet firmly 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. Use safety goggles when playing with large magnets.

Table 9: Anti-corrosion coating durability
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MPL 40x5x3 / N38

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

Total magnetic flux emitted by the magnet pole. Essential parameter in coil applications and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
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. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

*Note: On a vertical wall, the magnet holds only a fraction of its nominal pull.

2. Steel saturation

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

3. Temperature resistance

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.27

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.

Engineering data and GPSR

Chemical composition

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: 020402-2026

Measurement Calculator

Magnet pull force

Kilograms (kg)

Newtons (N)

Pounds (lbs)

Field Strength

Gauss (Gs)

Enter a value into any field, to see all other values convert automatically.

Other proposals

Product available Ships tomorrow

SM 25x200 [2xM8] / N42 - magnetic separator

541.20 ZŁ brutto / pcs

Product available Ships tomorrow

FM Ruszt magnetyczny do leja fi 200 jednopoziomowy / N52 - magnetic filter

1968.00 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 60x20x10 / N38 - lamellar magnet

68.27 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 25x15x2 / N38 - lamellar magnet

2.39 ZŁ brutto / pcs

Component MPL 40x5x3 / N38 features a flat shape and industrial pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 7.33 kg), this product is available immediately from our warehouse in Poland. Furthermore, 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 7.33 kg can pinch very hard and cause hematomas. 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. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 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).

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. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

This model is characterized by dimensions 40x5x3 mm, which, at a weight of 4.5 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 40x5x3 mm and a self-weight of 4.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages as well as disadvantages of rare earth magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

Their strength is durable, and after approximately ten years it decreases only by ~1% (according to research),
They maintain their magnetic properties even under strong external field,
By using a decorative coating of nickel, the element has an modern look,
The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Thanks to modularity in forming and the capacity to customize to unusual requirements,
Universal use in advanced technology sectors – they are utilized in computer drives, brushless drives, medical equipment, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in miniature devices

Disadvantages

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in creating threads and complicated forms in magnets, we propose using a housing - magnetic mount.
Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these magnets are able to 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

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

The lifting capacity listed is a result of laboratory testing performed under standard conditions:

with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
with a thickness minimum 10 mm
characterized by even structure
under conditions of gap-free contact (metal-to-metal)
during pulling in a direction perpendicular to the plane
at conditions approx. 20°C

Magnet lifting force in use – key factors

Please note that the magnet holding will differ influenced by elements below, in order of importance:

Gap (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
Angle of force application – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Material composition – different alloys reacts the same. Alloy additives weaken the attraction effect.
Surface finish – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Life threat

Individuals with a heart stimulator have to maintain an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Crushing risk

Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Permanent damage

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Magnet fragility

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Precision electronics

A strong magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Maintain magnets near a smartphone to prevent damaging the sensors.

Nickel coating and allergies

Some people suffer from a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Extended handling can result in dermatitis. We strongly advise use safety gloves.

Caution required

Be careful. Rare earth magnets act from a long distance and snap with huge force, often quicker than you can move away.

Adults only

These products are not intended for children. Swallowing several magnets may result in them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

Magnetic media

Very strong magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Fire warning

Drilling and cutting of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

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

MPL 40x5x3 / N38 - lamellar magnet

Technical of the product - MPL 40x5x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the magnet - technical parameters

Table 1: Static pull force (force vs gap) - interaction chart MPL 40x5x3 / N38

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

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 40x5x3 / N38

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

Table 5: Thermal stability (stability) - power drop MPL 40x5x3 / N38

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

Table 7: Protective zones (electronics) - warnings MPL 40x5x3 / N38

Table 8: Dynamics (cracking risk) - collision effects MPL 40x5x3 / N38

Table 9: Anti-corrosion coating durability MPL 40x5x3 / N38

Table 10: Construction data (Pc) MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy MPL 40x5x3 / N38

1. Vertical hold

2. Steel saturation

3. Temperature resistance

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

Chemical composition

Sustainability

Magnet pull force

Field Strength

Other proposals

SM 25x200 [2xM8] / N42 - magnetic separator

FM Ruszt magnetyczny do leja fi 200 jednopoziomowy / N52 - magnetic filter

MPL 60x20x10 / N38 - lamellar magnet

MPL 25x15x2 / N38 - lamellar magnet

Advantages as well as disadvantages of rare earth magnets.

Advantages

Disadvantages

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what it depends on?

Magnet lifting force in use – key factors

Safety rules for work with neodymium magnets

Life threat

Crushing risk

Permanent damage

Magnet fragility

Precision electronics

Nickel coating and allergies

Caution required

Adults only

Magnetic media

Fire warning

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MPL 40x5x3 / N38

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

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 40x5x3 / N38

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

Table 5: Thermal stability (stability) - power drop
MPL 40x5x3 / N38

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

Table 7: Protective zones (electronics) - warnings
MPL 40x5x3 / N38

Table 8: Dynamics (cracking risk) - collision effects
MPL 40x5x3 / N38

Table 9: Anti-corrosion coating durability
MPL 40x5x3 / N38

Table 10: Construction data (P_c)
MPL 40x5x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x5x3 / N38