Product on order Ships in 3-5 days

MPL 25x10x3 / 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 020387

GTIN/EAN: 5906301811862

5.00

length

25 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

5.63 g

Magnetization Direction

↑ axial

Load capacity

4.14 kg / 40.56 N

Magnetic Induction

230.69 mT / 2307 Gs

Coating

[NiCuNi] Nickel

product details »

3.57 ZŁ with VAT / pcs + price for transport

2.90 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

2.90 ZŁ

3.57 ZŁ

price from 250 pcs

2.73 ZŁ

3.35 ZŁ

price from 900 pcs

2.55 ZŁ

3.14 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Contact us by phone +48 888 99 98 98 alternatively drop us a message through form the contact section.
Weight and appearance of a magnet can be reviewed on our power calculator.

Order by 14:00 and we’ll ship today!

Technical details - MPL 25x10x3 / N38 - lamellar magnet

Specification / characteristics - MPL 25x10x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020387
GTIN/EAN	5906301811862
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	25 mm [±0,1 mm]
Width	10 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	5.63 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.14 kg / 40.56 N
Magnetic Induction ~ ?	230.69 mT / 2307 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 25x10x3 / 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 assembly - technical parameters

These values constitute the direct effect of a engineering calculation. Results were calculated on models for the class Nd₂Fe₁₄B. Actual performance might slightly differ. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (pull vs distance) - power drop
MPL 25x10x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2306 Gs 230.6 mT	4.14 kg / 9.13 pounds 4140.0 g / 40.6 N	strong
1 mm	2050 Gs 205.0 mT	3.27 kg / 7.21 pounds 3272.4 g / 32.1 N	strong
2 mm	1752 Gs 175.2 mT	2.39 kg / 5.27 pounds 2388.9 g / 23.4 N	strong
3 mm	1463 Gs 146.3 mT	1.67 kg / 3.68 pounds 1667.1 g / 16.4 N	low risk
5 mm	1000 Gs 100.0 mT	0.78 kg / 1.72 pounds 779.2 g / 7.6 N	low risk
10 mm	416 Gs 41.6 mT	0.13 kg / 0.30 pounds 134.4 g / 1.3 N	low risk
15 mm	200 Gs 20.0 mT	0.03 kg / 0.07 pounds 31.0 g / 0.3 N	low risk
20 mm	108 Gs 10.8 mT	0.01 kg / 0.02 pounds 9.0 g / 0.1 N	low risk
30 mm	40 Gs 4.0 mT	0.00 kg / 0.00 pounds 1.3 g / 0.0 N	low risk
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	low risk

Grip strength decreases significantly with every mm of distance. Note that even a microscopic distance (e.g., contamination, paint, rust) significantly reduces the pull force. Magnetic products operate optimally during direct contact; gap kills the power. Observe how quickly the parameters plummet, when the magnet does not adhere directly to the metal substrate. When designing the arrangement, avoid additional spacers.

Table 2: Vertical hold (vertical surface)
MPL 25x10x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.83 kg / 1.83 pounds 828.0 g / 8.1 N
1 mm	Stal (~0.2)	0.65 kg / 1.44 pounds 654.0 g / 6.4 N
2 mm	Stal (~0.2)	0.48 kg / 1.05 pounds 478.0 g / 4.7 N
3 mm	Stal (~0.2)	0.33 kg / 0.74 pounds 334.0 g / 3.3 N
5 mm	Stal (~0.2)	0.16 kg / 0.34 pounds 156.0 g / 1.5 N
10 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 26.0 g / 0.3 N
15 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 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 indicates the approximate holding capacity required to initiate the sliding of the magnet vertically along a upright steel wall (assuming standard friction). This value varies with the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 25x10x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.24 kg / 2.74 pounds 1242.0 g / 12.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.83 kg / 1.83 pounds 828.0 g / 8.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.41 kg / 0.91 pounds 414.0 g / 4.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.07 kg / 4.56 pounds 2070.0 g / 20.3 N

When mounting a element on a vertical wall (e.g., a fridge), it you can count on barely about 1/5 of its nominal power. Gravitational force and a weak degree of grip influence the fact that products slide down faster than they pull off. Want to create a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will slide down under a much lighter cargo. Utilizing a rubberized coating can effectively improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MPL 25x10x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.41 kg / 0.91 pounds 414.0 g / 4.1 N
1 mm	25%	1.04 kg / 2.28 pounds 1035.0 g / 10.2 N
2 mm	50%	2.07 kg / 4.56 pounds 2070.0 g / 20.3 N
3 mm	75%	3.10 kg / 6.85 pounds 3105.0 g / 30.5 N
5 mm	100%	4.14 kg / 9.13 pounds 4140.0 g / 40.6 N
10 mm	100%	4.14 kg / 9.13 pounds 4140.0 g / 40.6 N
11 mm	100%	4.14 kg / 9.13 pounds 4140.0 g / 40.6 N
12 mm	100%	4.14 kg / 9.13 pounds 4140.0 g / 40.6 N

A too thin steel cannot take in the full magnetic flux, which weakens actual performance of the magnet. Should you attach a powerful product to a too thin substrate, the field will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's potential, you require a sufficiently solid piece of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the product shows lower pull force. We advise picking the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MPL 25x10x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.14 kg / 9.13 pounds 4140.0 g / 40.6 N	OK
40 °C	-2.2%	4.05 kg / 8.93 pounds 4048.9 g / 39.7 N	OK
60 °C	-4.4%	3.96 kg / 8.73 pounds 3957.8 g / 38.8 N
80 °C	-6.6%	3.87 kg / 8.52 pounds 3866.8 g / 37.9 N
100 °C	-28.8%	2.95 kg / 6.50 pounds 2947.7 g / 28.9 N

Ordinary NdFeB products irreversibly lose power above the temperature limit. Watch out for overheating – excessive heat can permanently demagnetize this magnet. With every degree above norm, the magnet's capacity briefly lowers. Refrain from using this product close to ovens higher than its operating temperature limit. Too high temperature will cause destruction of magnetism.

*Important note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) may lose charge permanently at lower temperatures than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - field collision
MPL 25x10x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	8.20 kg / 18.07 pounds 3 767 Gs	1.23 kg / 2.71 pounds 1230 g / 12.1 N	N/A
1 mm	7.38 kg / 16.27 pounds 4 377 Gs	1.11 kg / 2.44 pounds 1107 g / 10.9 N	6.64 kg / 14.65 pounds ~0 Gs
2 mm	6.48 kg / 14.28 pounds 4 101 Gs	0.97 kg / 2.14 pounds 972 g / 9.5 N	5.83 kg / 12.86 pounds ~0 Gs
3 mm	5.58 kg / 12.30 pounds 3 805 Gs	0.84 kg / 1.84 pounds 837 g / 8.2 N	5.02 kg / 11.07 pounds ~0 Gs
5 mm	3.97 kg / 8.74 pounds 3 208 Gs	0.59 kg / 1.31 pounds 595 g / 5.8 N	3.57 kg / 7.87 pounds ~0 Gs
10 mm	1.54 kg / 3.40 pounds 2 001 Gs	0.23 kg / 0.51 pounds 231 g / 2.3 N	1.39 kg / 3.06 pounds ~0 Gs
20 mm	0.27 kg / 0.59 pounds 831 Gs	0.04 kg / 0.09 pounds 40 g / 0.4 N	0.24 kg / 0.53 pounds ~0 Gs
50 mm	0.01 kg / 0.01 pounds 127 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.01 pounds 80 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 54 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 38 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 27 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 20 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets attract each other from a significantly greater distance than a magnet and sheet combination. The connection of magnet-to-magnet generates a stronger field and a wider radius of performance. Planning to create a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the impact force is massive. The repulsion force is a bit weaker than the attraction, but still significant.
*Flux density between like poles drops to ~0 Gs at the geometric center of the gap (due to field cancellation).
Note: Results refer to friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 25x10x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.5 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.5 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 real danger to IT equipment as well as medical implants. These NdFeB products generate a flux that disrupts operation of digital equipment. Be aware: the unseen radiation acts through matter and housings. Increased vigilance must be exercised 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, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MPL 25x10x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	27.90 km/h (7.75 m/s)	0.17 J
30 mm	47.38 km/h (13.16 m/s)	0.49 J
50 mm	61.15 km/h (16.99 m/s)	0.81 J
100 mm	86.48 km/h (24.02 m/s)	1.62 J

Magnetic elements are very brittle – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely turns into a projectile. Kinetic force can trigger coating fragments or dangerous crushing to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Corrosion resistance
MPL 25x10x3 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MPL 25x10x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 928 Mx	59.3 µWb
P_c Coefficient	0.25	Low (Flat)

Total magnetic flux emitted by the pole surface. Essential parameter in coil applications and motors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 25x10x3 / N38

Environment	Effective steel pull	Effect
Air (land)	4.14 kg	Standard
Water (riverbed)	4.74 kg (+0.60 kg buoyancy gain)	+14.5%

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

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

1. Vertical hold

*Warning: On a vertical surface, the magnet holds just a fraction of its perpendicular strength.

2. Efficiency vs thickness

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.25

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%

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: 020387-2026

Measurement Calculator

Force (pull)

Force in lbs

Magnetic Field

Tesla (T)

Put a figure in a single slot to see the conversion for all other fields at once.

View also products

Product on order Ships in 3-5 days

MW 25x12 / N38 - cylindrical magnet

16.64 ZŁ brutto / pcs

Product on order Ships in 3-5 days

MW 15x1 / N38 - cylindrical magnet

0.800 ZŁ brutto / pcs

Product on order Ships in 3-5 days

SM 25x125 [2xM8] / N42 - magnetic separator

319.80 ZŁ brutto / pcs

Product on order Ships in 3-5 days

SMZR 32x175 / N52 - magnetic separator with handle

553.50 ZŁ brutto / pcs

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 25x10x3 mm and a weight of 5.63 g, guarantees the highest quality connection. This rectangular block with a force of 40.56 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 25x10x3 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 25x10x3 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as fasteners under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 25x10x3 / N38, it is best to use two-component adhesives (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 25x10x3 / N38 model is magnetized through the thickness (dimension 3 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 (25x10 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

The presented product is a neodymium magnet with precisely defined parameters: 25 mm (length), 10 mm (width), and 3 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 4.14 kg (force ~40.56 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Advantages

Besides their exceptional field intensity, neodymium magnets offer the following advantages:

They retain magnetic properties for almost ten years – the drop is just ~1% (in theory),
They maintain their magnetic properties even under external field action,
The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to look better,
The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Possibility of individual modeling as well as optimizing to atypical needs,
Fundamental importance in electronics industry – they are used in mass storage devices, electric motors, medical devices, and technologically advanced constructions.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in compact constructions

Limitations

Drawbacks and weaknesses of neodymium magnets: tips and applications.

Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only protects them against impacts but also increases their durability
Neodymium magnets decrease their force 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
They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
We recommend casing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated shapes.
Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these magnets can be problematic in diagnostics medical after entering the body.
With large orders the cost of neodymium magnets is economically unviable,

Lifting parameters

Maximum magnetic pulling force – what affects it?

Information about lifting capacity was defined for ideal contact conditions, including:

using a plate made of low-carbon steel, functioning as a magnetic yoke
whose transverse dimension equals approx. 10 mm
with an ground contact surface
with zero gap (no paint)
under vertical force vector (90-degree angle)
at temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

Please note that the application force may be lower subject to elements below, starting with the most relevant:

Gap (betwixt the magnet and the plate), because even a very small distance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
Loading method – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of nominal force).
Base massiveness – insufficiently thick sheet does not close the flux, causing part of the power to be lost to the other side.
Material composition – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
Thermal environment – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the lifting capacity.

Safety rules for work with NdFeB magnets

Protect data

Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Bodily injuries

Danger of trauma: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Use thick gloves.

Permanent damage

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

Respect the power

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

Warning for allergy sufferers

A percentage of the population experience a sensitization to Ni, which is the typical protective layer for neodymium magnets. Prolonged contact might lead to a rash. We strongly advise wear protective gloves.

Swallowing risk

Strictly keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.

Dust explosion hazard

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Implant safety

People with a ICD must maintain an absolute distance from magnets. The magnetic field can stop the functioning of the life-saving device.

Keep away from electronics

Navigation devices and smartphones are highly susceptible to magnetism. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Shattering risk

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

Attention! More info about hazards in the article: Safety of working with magnets.

MPL 25x10x3 / N38 - lamellar magnet

Technical details - MPL 25x10x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - technical parameters

Table 1: Static force (pull vs distance) - power drop MPL 25x10x3 / N38

Table 2: Vertical hold (vertical surface) MPL 25x10x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 25x10x3 / N38

Table 4: Material efficiency (substrate influence) - power losses MPL 25x10x3 / N38

Table 5: Working in heat (material behavior) - thermal limit MPL 25x10x3 / N38

Table 6: Two magnets (repulsion) - field collision MPL 25x10x3 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MPL 25x10x3 / N38

Table 8: Collisions (cracking risk) - collision effects MPL 25x10x3 / N38

Table 9: Corrosion resistance MPL 25x10x3 / N38

Table 10: Electrical data (Flux) MPL 25x10x3 / N38

Table 11: Hydrostatics and buoyancy MPL 25x10x3 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Heat tolerance

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

Chemical composition

Ecology and recycling (GPSR)

Force (pull)

Magnetic Field

View also products

MW 25x12 / N38 - cylindrical magnet

MW 15x1 / N38 - cylindrical magnet

SM 25x125 [2xM8] / N42 - magnetic separator

SMZR 32x175 / N52 - magnetic separator with handle

Advantages and disadvantages of Nd2Fe14B magnets.

Advantages

Limitations

Lifting parameters

Maximum magnetic pulling force – what affects it?

Practical aspects of lifting capacity – factors

Safety rules for work with NdFeB magnets

Protect data

Bodily injuries

Permanent damage

Respect the power

Warning for allergy sufferers

Swallowing risk

Dust explosion hazard

Implant safety

Keep away from electronics

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MPL 25x10x3 / N38

Table 2: Vertical hold (vertical surface)
MPL 25x10x3 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 25x10x3 / N38

Table 4: Material efficiency (substrate influence) - power losses
MPL 25x10x3 / N38

Table 5: Working in heat (material behavior) - thermal limit
MPL 25x10x3 / N38

Table 6: Two magnets (repulsion) - field collision
MPL 25x10x3 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 25x10x3 / N38

Table 8: Collisions (cracking risk) - collision effects
MPL 25x10x3 / N38

Table 9: Corrosion resistance
MPL 25x10x3 / N38

Table 10: Electrical data (Flux)
MPL 25x10x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 25x10x3 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.