Product available Ships today (order by 14:00)

MPL 20x10x5 / 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 020128

GTIN/EAN: 5906301811343

5.00

length

20 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

7.5 g

Magnetization Direction

↑ axial

Load capacity

6.15 kg / 60.31 N

Magnetic Induction

349.47 mT / 3495 Gs

Coating

[NiCuNi] Nickel

product specifications »

4.54 ZŁ with VAT / pcs + price for transport

3.69 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.69 ZŁ

4.54 ZŁ

price from 200 pcs

3.47 ZŁ

4.27 ZŁ

price from 700 pcs

3.25 ZŁ

3.99 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Contact us by phone +48 888 99 98 98 otherwise let us know through our online form the contact section.
Specifications along with appearance of magnetic components can be tested using our force calculator.

Order by 14:00 and we’ll ship today!

Physical properties - MPL 20x10x5 / N38 - lamellar magnet

Specification / characteristics - MPL 20x10x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020128
GTIN/EAN	5906301811343
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	10 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	7.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.15 kg / 60.31 N
Magnetic Induction ~ ?	349.47 mT / 3495 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x10x5 / 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 data constitute the outcome of a mathematical simulation. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world conditions might slightly deviate from the simulation results. Please consider these calculations as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - characteristics
MPL 20x10x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3493 Gs 349.3 mT	6.15 kg / 13.56 lbs 6150.0 g / 60.3 N	warning
1 mm	3035 Gs 303.5 mT	4.64 kg / 10.23 lbs 4641.8 g / 45.5 N	warning
2 mm	2558 Gs 255.8 mT	3.30 kg / 7.27 lbs 3298.0 g / 32.4 N	warning
3 mm	2120 Gs 212.0 mT	2.26 kg / 4.99 lbs 2264.8 g / 22.2 N	warning
5 mm	1433 Gs 143.3 mT	1.03 kg / 2.28 lbs 1034.5 g / 10.1 N	safe
10 mm	574 Gs 57.4 mT	0.17 kg / 0.37 lbs 166.1 g / 1.6 N	safe
15 mm	267 Gs 26.7 mT	0.04 kg / 0.08 lbs 35.9 g / 0.4 N	safe
20 mm	141 Gs 14.1 mT	0.01 kg / 0.02 lbs 10.1 g / 0.1 N	safe
30 mm	52 Gs 5.2 mT	0.00 kg / 0.00 lbs 1.4 g / 0.0 N	safe
50 mm	13 Gs 1.3 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	safe

Magnetic force weakens drastically per each millimeter of gap. Keep in mind that even the smallest gap (e.g., dirt, paint, veneer) significantly diminishes the holding power. Magnets operate most effectively during direct contact; air break kills the force. See how flashily the load capacity fall, when the magnet does not adhere directly to the metal substrate. When calculating the arrangement, avoid unnecessary gaps.

Table 2: Slippage hold (vertical surface)
MPL 20x10x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.23 kg / 2.71 lbs 1230.0 g / 12.1 N
1 mm	Stal (~0.2)	0.93 kg / 2.05 lbs 928.0 g / 9.1 N
2 mm	Stal (~0.2)	0.66 kg / 1.46 lbs 660.0 g / 6.5 N
3 mm	Stal (~0.2)	0.45 kg / 1.00 lbs 452.0 g / 4.4 N
5 mm	Stal (~0.2)	0.21 kg / 0.45 lbs 206.0 g / 2.0 N
10 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 34.0 g / 0.3 N
15 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 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 indicates the theoretical shear load needed to start the shifting of the magnet down against a upright metal surface (assuming standard friction). This value varies with the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MPL 20x10x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.85 kg / 4.07 lbs 1845.0 g / 18.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.23 kg / 2.71 lbs 1230.0 g / 12.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.62 kg / 1.36 lbs 615.0 g / 6.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.08 kg / 6.78 lbs 3075.0 g / 30.2 N

When placing a element on a vertical wall (e.g., a board), it will only hold only about 20%-30% of nominal attraction strength. Gravitational force as well as a low friction coefficient mean that magnets slip easier than they pull off. Want to create a hanger? Note that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will slip down under a much lighter cargo. Application of an anti-slip coating can significantly improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 20x10x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.62 kg / 1.36 lbs 615.0 g / 6.0 N
1 mm	25%	1.54 kg / 3.39 lbs 1537.5 g / 15.1 N
2 mm	50%	3.08 kg / 6.78 lbs 3075.0 g / 30.2 N
3 mm	75%	4.61 kg / 10.17 lbs 4612.5 g / 45.2 N
5 mm	100%	6.15 kg / 13.56 lbs 6150.0 g / 60.3 N
10 mm	100%	6.15 kg / 13.56 lbs 6150.0 g / 60.3 N
11 mm	100%	6.15 kg / 13.56 lbs 6150.0 g / 60.3 N
12 mm	100%	6.15 kg / 13.56 lbs 6150.0 g / 60.3 N

A thin metal plate cannot take in the entire magnetic field, which weakens actual performance of the magnet. Should you mount a strong magnet to a weak sheet, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze the maximum of this magnet's power, you require a sufficiently solid element of metal. The material oversaturation causes that on delicate walls (e.g., thin profiles), the magnet works worse. We advise picking the steel dimension according to the table below.

Table 5: Thermal resistance (material behavior) - power drop
MPL 20x10x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.15 kg / 13.56 lbs 6150.0 g / 60.3 N	OK
40 °C	-2.2%	6.01 kg / 13.26 lbs 6014.7 g / 59.0 N	OK
60 °C	-4.4%	5.88 kg / 12.96 lbs 5879.4 g / 57.7 N
80 °C	-6.6%	5.74 kg / 12.66 lbs 5744.1 g / 56.3 N
100 °C	-28.8%	4.38 kg / 9.65 lbs 4378.8 g / 43.0 N

Standard neodymium magnets change their properties power after exceeding the maximum temperature. Protect against heat – heat can permanently damage this magnet. As the temperature rises, the neodymium's power temporarily decreases. Refrain from using this magnet close to heaters higher than its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetic properties.

*Engineering note: Thermal stability is determined by both grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 20x10x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	15.04 kg / 33.17 lbs 4 923 Gs	2.26 kg / 4.98 lbs 2257 g / 22.1 N	N/A
1 mm	13.20 kg / 29.11 lbs 6 544 Gs	1.98 kg / 4.37 lbs 1980 g / 19.4 N	11.88 kg / 26.19 lbs ~0 Gs
2 mm	11.36 kg / 25.03 lbs 6 069 Gs	1.70 kg / 3.76 lbs 1703 g / 16.7 N	10.22 kg / 22.53 lbs ~0 Gs
3 mm	9.63 kg / 21.22 lbs 5 588 Gs	1.44 kg / 3.18 lbs 1444 g / 14.2 N	8.66 kg / 19.10 lbs ~0 Gs
5 mm	6.71 kg / 14.78 lbs 4 664 Gs	1.01 kg / 2.22 lbs 1006 g / 9.9 N	6.03 kg / 13.30 lbs ~0 Gs
10 mm	2.53 kg / 5.58 lbs 2 865 Gs	0.38 kg / 0.84 lbs 380 g / 3.7 N	2.28 kg / 5.02 lbs ~0 Gs
20 mm	0.41 kg / 0.90 lbs 1 148 Gs	0.06 kg / 0.13 lbs 61 g / 0.6 N	0.37 kg / 0.81 lbs ~0 Gs
50 mm	0.01 kg / 0.02 lbs 165 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.01 lbs 104 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 69 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 48 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 35 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 26 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two strong neodymiums attract each other from a much further distance than a neodymium and metal setup. The setup of magnet-to-magnet generates a stronger field and a wider radius of performance. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the collision energy is huge. The repulsion force is marginally weaker than the connection force, but still significant.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
Note: Results apply to shear force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MPL 20x10x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	7.5 cm
Hearing aid	10 Gs (1.0 mT)	6.0 cm
Timepiece	20 Gs (2.0 mT)	4.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.5 cm
Car key	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a large risk to electronic devices as well as pacemakers. These magnets produce a flux that disrupts operation of digital equipment. Remember: the unseen radiation passes through tissues and housings. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MPL 20x10x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	29.36 km/h (8.16 m/s)	0.25 J
30 mm	50.03 km/h (13.90 m/s)	0.72 J
50 mm	64.58 km/h (17.94 m/s)	1.21 J
100 mm	91.32 km/h (25.37 m/s)	2.41 J

Neodymium magnets are very brittle – a collision with steel risks their cracking. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or dangerous crushing to skin. Always hold the magnet during mounting so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Corrosion resistance
MPL 20x10x5 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Flux)
MPL 20x10x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	7 031 Mx	70.3 µWb
P_c Coefficient	0.42	Low (Flat)

Total magnetic flux passing through the magnet pole. Key data for generator designers as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Submerged application
MPL 20x10x5 / N38

Environment	Effective steel pull	Effect
Air (land)	6.15 kg	Standard
Water (riverbed)	7.04 kg (+0.89 kg buoyancy gain)	+14.5%

Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Caution: On a vertical wall, the magnet retains merely a fraction of its max power.

2. Plate thickness effect

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

3. Power loss vs temp

*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) = 0.42

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.

Engineering data and GPSR

Material specification

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 020128-2026

Measurement Calculator

Magnet pull force

Force (N)

Force in lbs

Magnetic Field

Induction (Gs)

Tesla (T)

Insert a number in a box, to see the rest change instantly.

Check out also proposals

Product available Ships today (order by 14:00)

MPL 60x10x5 / N38 - lamellar magnet

19.00 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

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

836.40 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 32x175 [2xM8] / N52 - magnetic separator

602.70 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMS 75x19x10.5x18 / N38 - conical magnetic holder

125.56 ZŁ brutto / pcs

Model MPL 20x10x5 / N38 features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. As a magnetic bar with high power (approx. 6.15 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block 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 6.15 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 20x10x5 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 6.15 kg), they are ideal as hidden locks 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 20x10x5 / 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. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 20x10x5 / N38 model is magnetized through the thickness (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 (20x10 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 20x10x5 mm, which, at a weight of 7.5 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 20x10x5 mm and a self-weight of 7.5 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Advantages

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

They do not lose strength, even over approximately 10 years – the decrease in lifting capacity is only ~1% (based on measurements),
They have excellent resistance to magnetism drop due to external fields,
A magnet with a shiny silver surface looks better,
Neodymium magnets ensure maximum magnetic induction on a small area, which increases force concentration,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
Possibility of accurate creating as well as modifying to atypical requirements,
Versatile presence in modern technologies – they serve a role in magnetic memories, electric motors, medical equipment, also industrial machines.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in miniature devices

Cons

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
Neodymium 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 and 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
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in realizing threads and complicated shapes in magnets, we propose using a housing - magnetic mount.
Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

The lifting capacity listed is a measurement result conducted under standard conditions:

with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
with a cross-section minimum 10 mm
with an ideally smooth contact surface
without any clearance between the magnet and steel
during pulling in a direction perpendicular to the plane
at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

It is worth knowing that the application force will differ depending on the following factors, in order of importance:

Clearance – the presence of any layer (rust, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the power to be wasted into the air.
Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, however under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate lowers the holding force.

Warnings

Respect the power

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

Dust explosion hazard

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

Compass and GPS

A strong magnetic field interferes with the operation of compasses in smartphones and navigation systems. Do not bring magnets close to a smartphone to prevent breaking the sensors.

Maximum temperature

Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. The loss of strength is permanent.

Magnets are brittle

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Finger safety

Danger of trauma: The attraction force is so immense that it can cause blood blisters, crushing, and broken bones. Use thick gloves.

Danger to the youngest

Neodymium magnets are not toys. Swallowing a few magnets may result in them connecting inside the digestive tract, which poses a critical condition and necessitates urgent medical intervention.

Danger to pacemakers

For implant holders: Powerful magnets disrupt electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Electronic hazard

Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Skin irritation risks

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, refrain from touching magnets with bare hands and choose encased magnets.

Warning! Learn more about risks in the article: Magnet Safety Guide.

MPL 20x10x5 / N38 - lamellar magnet

Physical properties - MPL 20x10x5 / 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 force (force vs distance) - characteristics MPL 20x10x5 / N38

Table 2: Slippage hold (vertical surface) MPL 20x10x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MPL 20x10x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 20x10x5 / N38

Table 5: Thermal resistance (material behavior) - power drop MPL 20x10x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MPL 20x10x5 / N38

Table 7: Hazards (electronics) - warnings MPL 20x10x5 / N38

Table 8: Impact energy (kinetic energy) - collision effects MPL 20x10x5 / N38

Table 9: Corrosion resistance MPL 20x10x5 / N38

Table 10: Construction data (Flux) MPL 20x10x5 / N38

Table 11: Submerged application MPL 20x10x5 / N38

1. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Material specification

Sustainability

Magnet pull force

Magnetic Field

Check out also proposals

MPL 60x10x5 / N38 - lamellar magnet

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

SM 32x175 [2xM8] / N52 - magnetic separator

UMS 75x19x10.5x18 / N38 - conical magnetic holder

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

Cons

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Magnet lifting force in use – key factors

Warnings

Respect the power

Dust explosion hazard

Compass and GPS

Maximum temperature

Magnets are brittle

Finger safety

Danger to the youngest

Danger to pacemakers

Electronic hazard

Skin irritation risks

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MPL 20x10x5 / N38

Table 2: Slippage hold (vertical surface)
MPL 20x10x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MPL 20x10x5 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 20x10x5 / N38

Table 5: Thermal resistance (material behavior) - power drop
MPL 20x10x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MPL 20x10x5 / N38

Table 7: Hazards (electronics) - warnings
MPL 20x10x5 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MPL 20x10x5 / N38

Table 9: Corrosion resistance
MPL 20x10x5 / N38

Table 10: Construction data (Flux)
MPL 20x10x5 / N38

Table 11: Submerged application
MPL 20x10x5 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.