Product available Ships today (order by 14:00)

MPL 20x8x4 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN

lamellar magnet

Catalog no 020133

GTIN/EAN: 5906301811398

5.00

Load capacity 4.79 kg / 46.98 N Magnetic Induction 336.99 mT / 3370 Gs

length: 20 mm [±0,1 mm]
Width: 8 mm [±0,1 mm]
Height: 4 mm [±0,1 mm]
Weight: 4.8 g
Magnetization Direction: ↑ axial
Coating: [NiCuNi] Nickel

check properties »

3.67 zł with VAT / pcs + price for transport

2.98 zł net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

2.98 ZŁ

3.67 ZŁ

price from 250 pcs

2.80 ZŁ

3.45 ZŁ

price from 850 pcs

2.62 ZŁ

3.23 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

Not sure which magnet to buy?

Call us +48 888 99 98 98 or contact us through our online form the contact form page.
Specifications as well as shape of magnetic components can be tested on our force calculator.

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

Product card - MPL 20x8x4 / N38 - lamellar magnet

Specification / characteristics - MPL 20x8x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020133
GTIN/EAN	5906301811398
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	20 mm [±0,1 mm]
Width	8 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	4.8 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.79 kg / 46.98 N
Magnetic Induction ~ ?	336.99 mT / 3370 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x8x4 / 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 analysis of the product - report

These information represent the outcome of a physical analysis. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance may differ. Treat these calculations as a reference point for designers.

Table 1: Static pull force (pull vs distance) - power drop
MPL 20x8x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3368 Gs 336.8 mT	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N	medium risk
1 mm	2818 Gs 281.8 mT	3.35 kg / 7.39 lbs 3352.3 g / 32.9 N	medium risk
2 mm	2266 Gs 226.6 mT	2.17 kg / 4.78 lbs 2167.6 g / 21.3 N	medium risk
3 mm	1794 Gs 179.4 mT	1.36 kg / 3.00 lbs 1358.6 g / 13.3 N	safe
5 mm	1130 Gs 113.0 mT	0.54 kg / 1.19 lbs 538.9 g / 5.3 N	safe
10 mm	416 Gs 41.6 mT	0.07 kg / 0.16 lbs 73.0 g / 0.7 N	safe
15 mm	187 Gs 18.7 mT	0.01 kg / 0.03 lbs 14.7 g / 0.1 N	safe
20 mm	97 Gs 9.7 mT	0.00 kg / 0.01 lbs 4.0 g / 0.0 N	safe
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 lbs 0.5 g / 0.0 N	safe
50 mm	9 Gs 0.9 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Magnetic force decreases sharply with every subsequent millimeter of spacing. Note that even the smallest gap (e.g., contamination, varnish, rust) strongly weakens the grip. Neodymiums work optimally at the point of direct contact; air break kills the power. Notice how rapidly the load capacity fall, when the product does not touch tightly to the steel surface. When calculating the mounting, eliminate additional spacers.

Table 2: Shear hold (vertical surface)
MPL 20x8x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.96 kg / 2.11 lbs 958.0 g / 9.4 N
1 mm	Stal (~0.2)	0.67 kg / 1.48 lbs 670.0 g / 6.6 N
2 mm	Stal (~0.2)	0.43 kg / 0.96 lbs 434.0 g / 4.3 N
3 mm	Stal (~0.2)	0.27 kg / 0.60 lbs 272.0 g / 2.7 N
5 mm	Stal (~0.2)	0.11 kg / 0.24 lbs 108.0 g / 1.1 N
10 mm	Stal (~0.2)	0.01 kg / 0.03 lbs 14.0 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 presents the approximate force required to cause the sliding of the magnet down against a vertical steel plate (considering standard friction coefficient). The holding force depends on the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MPL 20x8x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.44 kg / 3.17 lbs 1437.0 g / 14.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.96 kg / 2.11 lbs 958.0 g / 9.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.48 kg / 1.06 lbs 479.0 g / 4.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.40 kg / 5.28 lbs 2395.0 g / 23.5 N

When mounting a element on a vertical surface (e.g., a fridge), it will only hold only about 1/5 of nominal attraction strength. Gravitational force as well as a low friction coefficient cause that magnets slip easier than they pop off the substrate. Planning a hanger? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a significantly smaller load. Utilizing a rubberized coating can effectively improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 20x8x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.48 kg / 1.06 lbs 479.0 g / 4.7 N
1 mm	25%	1.20 kg / 2.64 lbs 1197.5 g / 11.7 N
2 mm	50%	2.40 kg / 5.28 lbs 2395.0 g / 23.5 N
3 mm	75%	3.59 kg / 7.92 lbs 3592.5 g / 35.2 N
5 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N
10 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N
11 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N
12 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N

A thin sheet is unable to take in the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a thin surface, the field will penetrate right through and the holding will be smaller. To squeeze the maximum of this neodymium's power, you require a sufficiently solid backing of steel. The material oversaturation means that on sheet metal structures (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel thickness from these parameters.

Table 5: Working in heat (stability) - resistance threshold
MPL 20x8x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N	OK
40 °C	-2.2%	4.68 kg / 10.33 lbs 4684.6 g / 46.0 N	OK
60 °C	-4.4%	4.58 kg / 10.10 lbs 4579.2 g / 44.9 N
80 °C	-6.6%	4.47 kg / 9.86 lbs 4473.9 g / 43.9 N
100 °C	-28.8%	3.41 kg / 7.52 lbs 3410.5 g / 33.5 N

Ordinary NdFeB products irreversibly lose power past the thermal threshold. Watch out for overheating – high temperature can permanently destroy this product. As the temperature rises, the magnet's capacity briefly lowers. Do not use this product near heat sources exceeding its operating temperature limit. Too high temperature will result in destruction of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress than taller cylinders. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MPL 20x8x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.19 kg / 24.67 lbs 4 784 Gs	1.68 kg / 3.70 lbs 1678 g / 16.5 N	N/A
1 mm	9.49 kg / 20.93 lbs 6 205 Gs	1.42 kg / 3.14 lbs 1424 g / 14.0 N	8.54 kg / 18.84 lbs ~0 Gs
2 mm	7.83 kg / 17.26 lbs 5 635 Gs	1.17 kg / 2.59 lbs 1175 g / 11.5 N	7.05 kg / 15.54 lbs ~0 Gs
3 mm	6.34 kg / 13.97 lbs 5 069 Gs	0.95 kg / 2.10 lbs 951 g / 9.3 N	5.70 kg / 12.57 lbs ~0 Gs
5 mm	4.02 kg / 8.85 lbs 4 035 Gs	0.60 kg / 1.33 lbs 602 g / 5.9 N	3.61 kg / 7.97 lbs ~0 Gs
10 mm	1.26 kg / 2.78 lbs 2 259 Gs	0.19 kg / 0.42 lbs 189 g / 1.9 N	1.13 kg / 2.50 lbs ~0 Gs
20 mm	0.17 kg / 0.38 lbs 832 Gs	0.03 kg / 0.06 lbs 26 g / 0.3 N	0.15 kg / 0.34 lbs ~0 Gs
50 mm	0.00 kg / 0.01 lbs 112 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 70 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 46 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 32 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 23 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 17 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets attract each other from a wider radius than a magnet and sheet setup. The connection of magnet-to-magnet creates a more powerful interaction and a further horizon of performance. Designing a strong closure? Utilize two neodymiums instead of a neodymium and a striker plate. Be careful that when bringing together two magnets, the pinch force is massive. The levitation is a bit weaker than the connection force, but still significant.
*Field value in repulsion mode drops to ~0 Gs at the midpoint between the magnets (due to field cancellation).
Attention: Calculations apply to sliding force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MPL 20x8x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	3.0 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 poses a serious hazard to electronics and medical implants. These NdFeB products produce a flux that destroys function of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and glass. Special caution must be taken by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MPL 20x8x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.61 km/h (6.84 m/s)	0.11 J
30 mm	24.86 km/h (6.91 m/s)	0.11 J
50 mm	24.86 km/h (6.91 m/s)	0.11 J
100 mm	24.87 km/h (6.91 m/s)	0.11 J

Magnetic elements are very brittle – a violent impact against metal causes immediate chipping. Watch the impact speed – a magnet released freely speeds with massive force. Impact energy can trigger coating fragments or injury to skin. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Surface protection spec
MPL 20x8x4 / 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. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MPL 20x8x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 277 Mx	52.8 µWb
P_c Coefficient	0.38	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MPL 20x8x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.79 kg	Standard
Water (riverbed)	5.48 kg (+0.69 kg buoyancy gain)	+14.5%

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

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

*Note: On a vertical surface, the magnet retains merely approx. 20-30% of its max power.

2. Steel thickness impact

*Thin steel (e.g. computer case) severely limits the holding force.

3. Heat tolerance

*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) = 0.38

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 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: 020133-2026

Quick Unit Converter

Force (pull)

Force in kg

Newtons (N)

Force in lbs

Magnetic Field

Induction (Gs)

Induction (T)

Put your value in just one field to see the conversion for all other units at once.

Other deals

Product available Ships today (order by 14:00)

MW 15x10 / N38 - cylindrical magnet

4.51 zł brutto / pcs

Product available Ships today (order by 14:00)

MP 25x8x20 / N38 - ring magnet

41.71 zł brutto / pcs

Product available Ships today (order by 14:00)

MW 8x1.5 / N38 - cylindrical magnet

0.455 zł brutto / pcs

Product available Ships today (order by 14:00)

UMGGZ 43x6 [M6] GZ / N38 - rubber magnetic holder external thread

10.46 zł brutto / pcs

Component MPL 20x8x4 / N38 features a flat shape and industrial pulling force, making it an ideal solution for building separators and machines. As a block magnet with high power (approx. 4.79 kg), this product is available immediately from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating secures 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 4.79 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 4.79 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. 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 20x8x4 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 20x8x4 / N38 model is magnetized through the thickness (dimension 4 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.

This model is characterized by dimensions 20x8x4 mm, which, at a weight of 4.8 g, makes it an element with high energy density. It is a magnetic block with dimensions 20x8x4 mm and a self-weight of 4.8 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 Nd₂Fe₁₄B magnets.

Pros

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

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
They feature excellent resistance to weakening of magnetic properties due to external fields,
By applying a decorative coating of gold, the element acquires an proper look,
The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Considering the ability of flexible molding and adaptation to individualized needs, magnetic components can be modeled in a variety of geometric configurations, which makes them more universal,
Key role in future technologies – they are commonly used in hard drives, electric motors, medical devices, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:

Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
We suggest a housing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex shapes.
Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Maximum magnetic pulling force – what affects it?

The force parameter is a result of laboratory testing performed under specific, ideal conditions:

with the application of a sheet made of low-carbon steel, guaranteeing maximum field concentration
whose thickness reaches at least 10 mm
with a plane free of scratches
under conditions of no distance (surface-to-surface)
during pulling in a direction perpendicular to the plane
in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Bear in mind that the magnet holding will differ subject to elements below, starting with the most relevant:

Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
Load vector – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Steel grade – the best choice is pure iron steel. Cast iron may have worse magnetic properties.
Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
Thermal environment – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate reduces the load capacity.

Precautions when working with neodymium magnets

Precision electronics

Remember: rare earth magnets produce a field that interferes with sensitive sensors. Keep a separation from your phone, device, and GPS.

Do not underestimate power

Handle magnets consciously. Their immense force can surprise even professionals. Be vigilant and respect their force.

Electronic devices

Powerful magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.

Medical implants

For implant holders: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Product not for children

Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep away from kids and pets.

Fire risk

Fire hazard: Neodymium dust is highly flammable. Do not process magnets in home conditions as this may cause fire.

Heat warning

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

Allergic reactions

It is widely known that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid touching magnets with bare hands and select versions in plastic housing.

Risk of cracking

NdFeB magnets are sintered ceramics, which means they are very brittle. Impact of two magnets leads to them shattering into small pieces.

Crushing force

Big blocks can break fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Safety First! Learn more about hazards in the article: Magnet Safety Guide.

MPL 20x8x4 / N38 - lamellar magnet

Product card - MPL 20x8x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the product - report

Table 1: Static pull force (pull vs distance) - power drop MPL 20x8x4 / N38

Table 2: Shear hold (vertical surface) MPL 20x8x4 / N38

Table 3: Wall mounting (shearing) - vertical pull MPL 20x8x4 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 20x8x4 / N38

Table 5: Working in heat (stability) - resistance threshold MPL 20x8x4 / N38

Table 6: Two magnets (attraction) - field collision MPL 20x8x4 / N38

Table 7: Hazards (electronics) - precautionary measures MPL 20x8x4 / N38

Table 8: Impact energy (cracking risk) - collision effects MPL 20x8x4 / N38

Table 9: Surface protection spec MPL 20x8x4 / N38

Table 10: Construction data (Flux) MPL 20x8x4 / N38

Table 11: Underwater work (magnet fishing) MPL 20x8x4 / N38

1. Shear force

2. Steel thickness impact

3. Heat tolerance

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

Elemental analysis

Sustainability

Force (pull)

Magnetic Field

Other deals

MW 15x10 / N38 - cylindrical magnet

MP 25x8x20 / N38 - ring magnet

MW 8x1.5 / N38 - cylindrical magnet

UMGGZ 43x6 [M6] GZ / N38 - rubber magnetic holder external thread

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Cons

Lifting parameters

Maximum magnetic pulling force – what affects it?

Practical aspects of lifting capacity – factors

Precautions when working with neodymium magnets

Precision electronics

Do not underestimate power

Electronic devices

Medical implants

Product not for children

Fire risk

Heat warning

Allergic reactions

Risk of cracking

Crushing force

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - power drop
MPL 20x8x4 / N38

Table 2: Shear hold (vertical surface)
MPL 20x8x4 / N38

Table 3: Wall mounting (shearing) - vertical pull
MPL 20x8x4 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 20x8x4 / N38

Table 5: Working in heat (stability) - resistance threshold
MPL 20x8x4 / N38

Table 6: Two magnets (attraction) - field collision
MPL 20x8x4 / N38

Table 7: Hazards (electronics) - precautionary measures
MPL 20x8x4 / N38

Table 8: Impact energy (cracking risk) - collision effects
MPL 20x8x4 / N38

Table 9: Surface protection spec
MPL 20x8x4 / N38

Table 10: Construction data (Flux)
MPL 20x8x4 / N38

Table 11: Underwater work (magnet fishing)
MPL 20x8x4 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.