Product available Ships today (order by 14:00)

MPL 15x2x30 / 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 020121

GTIN/EAN: 5906301811275

5.00

length

15 mm [±0,1 mm]

Width

2 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

6.75 g

Magnetization Direction

→ diametrical

Load capacity

0.68 kg / 6.68 N

Magnetic Induction

614.34 mT / 6143 Gs

Coating

[NiCuNi] Nickel

view specifications »

4.75 ZŁ with VAT / pcs + price for transport

3.86 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.86 ZŁ

4.75 ZŁ

price from 200 pcs

3.63 ZŁ

4.46 ZŁ

price from 650 pcs

3.40 ZŁ

4.18 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Contact us by phone +48 22 499 98 98 otherwise drop us a message by means of request form our website.
Strength along with appearance of neodymium magnets can be tested on our online calculation tool.

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

Physical properties - MPL 15x2x30 / N38 - lamellar magnet

Specification / characteristics - MPL 15x2x30 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020121
GTIN/EAN	5906301811275
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	15 mm [±0,1 mm]
Width	2 mm [±0,1 mm]
Height	30 mm [±0,1 mm]
Weight	6.75 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	0.68 kg / 6.68 N
Magnetic Induction ~ ?	614.34 mT / 6143 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 15x2x30 / 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 magnet - data

These data represent the direct effect of a physical analysis. Values are based on algorithms for the material Nd₂Fe₁₄B. Real-world performance might slightly differ. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs gap) - power drop
MPL 15x2x30 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6128 Gs 612.8 mT	0.68 kg / 1.50 LBS 680.0 g / 6.7 N	weak grip
1 mm	3036 Gs 303.6 mT	0.17 kg / 0.37 LBS 166.8 g / 1.6 N	weak grip
2 mm	1736 Gs 173.6 mT	0.05 kg / 0.12 LBS 54.5 g / 0.5 N	weak grip
3 mm	1150 Gs 115.0 mT	0.02 kg / 0.05 LBS 23.9 g / 0.2 N	weak grip
5 mm	623 Gs 62.3 mT	0.01 kg / 0.02 LBS 7.0 g / 0.1 N	weak grip
10 mm	218 Gs 21.8 mT	0.00 kg / 0.00 LBS 0.9 g / 0.0 N	weak grip
15 mm	103 Gs 10.3 mT	0.00 kg / 0.00 LBS 0.2 g / 0.0 N	weak grip
20 mm	58 Gs 5.8 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	weak grip
30 mm	24 Gs 2.4 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	7 Gs 0.7 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Magnetic force decreases drastically per each millimeter of distance. Keep in mind that even a microscopic distance (e.g., contamination, varnish, veneer) strongly reduces the pull force. Magnetic products operate strongest during direct contact; distance kills the force. Observe how quickly the pull force fall, when the magnet does not touch tightly to the metal substrate. When calculating the arrangement, avoid redundant distances.

Table 2: Slippage load (vertical surface)
MPL 15x2x30 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.14 kg / 0.30 LBS 136.0 g / 1.3 N
1 mm	Stal (~0.2)	0.03 kg / 0.07 LBS 34.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 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

This section calculates the estimated weight limit needed to initiate the slippage of the magnet down along a upright steel plate (assuming standard friction coefficient). This parameter is a function of the distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 15x2x30 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.20 kg / 0.45 LBS 204.0 g / 2.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.14 kg / 0.30 LBS 136.0 g / 1.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.07 kg / 0.15 LBS 68.0 g / 0.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.34 kg / 0.75 LBS 340.0 g / 3.3 N

When hanging a magnet on a vertical surface (e.g., a fridge), it will only hold barely approx. 20%-30% of its maximum pull force. Gravity as well as a low friction coefficient cause that products slip easier than they pop off the substrate. Designing a vertical fastening? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the magnet will slide down under a much lighter weight. Using a rubber coating can drastically raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 15x2x30 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.07 kg / 0.15 LBS 68.0 g / 0.7 N
1 mm	25%	0.17 kg / 0.37 LBS 170.0 g / 1.7 N
2 mm	50%	0.34 kg / 0.75 LBS 340.0 g / 3.3 N
3 mm	75%	0.51 kg / 1.12 LBS 510.0 g / 5.0 N
5 mm	100%	0.68 kg / 1.50 LBS 680.0 g / 6.7 N
10 mm	100%	0.68 kg / 1.50 LBS 680.0 g / 6.7 N
11 mm	100%	0.68 kg / 1.50 LBS 680.0 g / 6.7 N
12 mm	100%	0.68 kg / 1.50 LBS 680.0 g / 6.7 N

A thin sheet is incapable of absorb the full magnetic flux, which wastes potential of the holder. Should you attach a powerful product to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To squeeze 100% of this neodymium's potential, you require a sufficiently solid piece of metal. The saturation effect causes that on thin elements (e.g., thin profiles), the product shows lower pull force. We recommend selecting the steel dimension according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
MPL 15x2x30 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.68 kg / 1.50 LBS 680.0 g / 6.7 N	OK
40 °C	-2.2%	0.67 kg / 1.47 LBS 665.0 g / 6.5 N	OK
60 °C	-4.4%	0.65 kg / 1.43 LBS 650.1 g / 6.4 N	OK
80 °C	-6.6%	0.64 kg / 1.40 LBS 635.1 g / 6.2 N
100 °C	-28.8%	0.48 kg / 1.07 LBS 484.2 g / 4.7 N

Classic neodymiums change their properties strength past the thermal threshold. Avoid high temperatures – heat can permanently demagnetize this product. With increasing heat, the magnet's power briefly decreases. Refrain from using this magnet close to heaters exceeding its operating temperature limit. Ignoring the limit will result in destruction of magnetic properties.

*Important note: Thermal stability is determined by both grade, but also on the magnet's shape. Low-profile magnets (low Pc) risk losing magnetic properties at lower temperatures than taller cylinders. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 15x2x30 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	6.95 kg / 15.31 LBS 6 152 Gs	1.04 kg / 2.30 LBS 1042 g / 10.2 N	N/A
1 mm	3.45 kg / 7.62 LBS 8 643 Gs	0.52 kg / 1.14 LBS 518 g / 5.1 N	3.11 kg / 6.85 LBS ~0 Gs
2 mm	1.70 kg / 3.76 LBS 6 071 Gs	0.26 kg / 0.56 LBS 256 g / 2.5 N	1.53 kg / 3.38 LBS ~0 Gs
3 mm	0.93 kg / 2.05 LBS 4 482 Gs	0.14 kg / 0.31 LBS 139 g / 1.4 N	0.84 kg / 1.84 LBS ~0 Gs
5 mm	0.36 kg / 0.79 LBS 2 788 Gs	0.05 kg / 0.12 LBS 54 g / 0.5 N	0.32 kg / 0.71 LBS ~0 Gs
10 mm	0.07 kg / 0.16 LBS 1 247 Gs	0.01 kg / 0.02 LBS 11 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
20 mm	0.01 kg / 0.02 LBS 435 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 71 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 47 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 33 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 24 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 18 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 14 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnets interact from a wider radius than a magnet and sheet combination. The setup of two magnets produces a massive flux and a further horizon of operation. Designing a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the pinch force is huge. The repulsion force is marginally weaker than the connection force, but still impressive.
*Flux density between like poles reaches ~0 Gs at the geometric center between the magnets (due to field cancellation).
* Results refer to friction force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MPL 15x2x30 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Mechanical watch	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	2.5 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

Extremely neodym field poses a large risk to electronics as well as medical implants. These neodymiums generate a field that disrupts operation 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. Also at risk are: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MPL 15x2x30 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	10.13 km/h (2.81 m/s)	0.03 J
30 mm	17.53 km/h (4.87 m/s)	0.08 J
50 mm	22.63 km/h (6.29 m/s)	0.13 J
100 mm	32.01 km/h (8.89 m/s)	0.27 J

Neodymium magnets are delicate – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or painful pinches to fingers. Always hold the magnet during installation so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Corrosion resistance
MPL 15x2x30 / 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 (Flux)
MPL 15x2x30 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	2 210 Mx	22.1 µWb
P_c Coefficient	1.54	High (Stable)

Total magnetic flux emitted by the pole surface. Key data when building generators as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 15x2x30 / N38

Environment	Effective steel pull	Effect
Air (land)	0.68 kg	Standard
Water (riverbed)	0.78 kg (+0.10 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!

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) drastically weakens the holding force.

3. Thermal stability

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.54

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 and environmental data

Material specification

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

Environmental data

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: 020121-2026

Quick Unit Converter

Magnet pull force

Force in lbs

Magnetic Field

Induction (Gs)

Insert a value into a field, to see the remaining fields will convert automatically.

Other deals

Product available Ships today (order by 14:00)

UMH 16x5x32 [M4] / N38 - magnetic holder with hook

4.88 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 40x10x4 / N38 - lamellar magnet

4.87 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

189.42 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 40x15 / N38 - cylindrical magnet

65.93 ZŁ brutto / pcs

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 15x2x30 mm and a weight of 6.75 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 0.68 kg), this product is available off-the-shelf 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 block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 15x2x30 / 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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

They constitute a key element in the production of wind generators and material handling systems. 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 15x2x30 / N38, it is best to use strong epoxy glues (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).

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 15x2x30 mm, which, at a weight of 6.75 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 0.68 kg (force ~6.68 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of rare earth magnets.

Strengths

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

Their magnetic field is durable, and after approximately 10 years it drops only by ~1% (theoretically),
Neodymium magnets are distinguished by extremely resistant to magnetic field loss caused by magnetic disturbances,
By using a smooth layer of nickel, the element has an proper look,
Magnets are distinguished by exceptionally strong magnetic induction on the surface,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to versatility in designing and the capacity to adapt to unusual requirements,
Huge importance in advanced technology sectors – they are used in magnetic memories, motor assemblies, medical devices, and modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions

Limitations

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
Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Limited ability of producing nuts in the magnet and complicated shapes - preferred is casing - magnet mounting.
Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Best holding force of the magnet in ideal parameters – what affects it?

The declared magnet strength concerns the limit force, obtained under ideal test conditions, specifically:

using a base made of low-carbon steel, acting as a circuit closing element
possessing a massiveness of minimum 10 mm to ensure full flux closure
with a plane perfectly flat
without the slightest insulating layer between the magnet and steel
during pulling in a direction perpendicular to the mounting surface
at temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Bear in mind that the working load will differ depending on the following factors, starting with the most relevant:

Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Angle of force application – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Material composition – different alloys attracts identically. Alloy additives weaken the attraction effect.
Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Safe handling of NdFeB magnets

Magnetic media

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, timepieces).

Serious injuries

Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Beware of splinters

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets will cause them cracking into small pieces.

Swallowing risk

Absolutely store magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are tragic.

GPS and phone interference

An intense magnetic field negatively affects the functioning of magnetometers in phones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.

Danger to pacemakers

Warning for patients: Powerful magnets affect medical devices. Keep minimum 30 cm distance or request help to handle the magnets.

Safe operation

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

Machining danger

Machining of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Demagnetization risk

Monitor thermal conditions. Heating the magnet to high heat will ruin its magnetic structure and strength.

Skin irritation risks

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, immediately stop working with magnets and wear gloves.

Important! Details about risks in the article: Safety of working with magnets.

MPL 15x2x30 / N38 - lamellar magnet

Physical properties - MPL 15x2x30 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - data

Table 1: Static pull force (pull vs gap) - power drop MPL 15x2x30 / N38

Table 2: Slippage load (vertical surface) MPL 15x2x30 / N38

Table 3: Vertical assembly (shearing) - vertical pull MPL 15x2x30 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 15x2x30 / N38

Table 5: Working in heat (material behavior) - thermal limit MPL 15x2x30 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MPL 15x2x30 / N38

Table 7: Hazards (electronics) - precautionary measures MPL 15x2x30 / N38

Table 8: Collisions (kinetic energy) - collision effects MPL 15x2x30 / N38

Table 9: Corrosion resistance MPL 15x2x30 / N38

Table 10: Construction data (Flux) MPL 15x2x30 / N38

Table 11: Hydrostatics and buoyancy MPL 15x2x30 / N38

1. Shear force

2. Efficiency vs thickness

3. Thermal stability

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

Material specification

Environmental data

Magnet pull force

Magnetic Field

Other deals

UMH 16x5x32 [M4] / N38 - magnetic holder with hook

MPL 40x10x4 / N38 - lamellar magnet

UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

MW 40x15 / N38 - cylindrical magnet

Strengths and weaknesses of rare earth magnets.

Strengths

Limitations

Holding force characteristics

Best holding force of the magnet in ideal parameters – what affects it?

Lifting capacity in practice – influencing factors

Safe handling of NdFeB magnets

Magnetic media

Serious injuries

Beware of splinters

Swallowing risk

GPS and phone interference

Danger to pacemakers

Safe operation

Machining danger

Demagnetization risk

Skin irritation risks

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MPL 15x2x30 / N38

Table 2: Slippage load (vertical surface)
MPL 15x2x30 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MPL 15x2x30 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 15x2x30 / N38

Table 5: Working in heat (material behavior) - thermal limit
MPL 15x2x30 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 15x2x30 / N38

Table 7: Hazards (electronics) - precautionary measures
MPL 15x2x30 / N38

Table 8: Collisions (kinetic energy) - collision effects
MPL 15x2x30 / N38

Table 9: Corrosion resistance
MPL 15x2x30 / N38

Table 10: Construction data (Flux)
MPL 15x2x30 / N38

Table 11: Hydrostatics and buoyancy
MPL 15x2x30 / N38