Product available Ships tomorrow

MPL 40x10x4 / 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 020150

GTIN/EAN: 5906301811565

5.00

length

40 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

12 g

Magnetization Direction

↑ axial

Load capacity

9.31 kg / 91.33 N

Magnetic Induction

275.57 mT / 2756 Gs

Coating

[NiCuNi] Nickel

technical parameters »

4.87 ZŁ with VAT / pcs + price for transport

3.96 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.96 ZŁ

4.87 ZŁ

price from 200 pcs

3.72 ZŁ

4.58 ZŁ

price from 650 pcs

3.48 ZŁ

4.29 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have purchase concerns?

Contact us by phone +48 22 499 98 98 alternatively let us know via inquiry form the contact form page.
Lifting power along with appearance of magnets can be calculated with our power calculator.

Orders submitted before 14:00 will be dispatched today!

Technical specification - MPL 40x10x4 / N38 - lamellar magnet

Specification / characteristics - MPL 40x10x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020150
GTIN/EAN	5906301811565
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	40 mm [±0,1 mm]
Width	10 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	12 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.31 kg / 91.33 N
Magnetic Induction ~ ?	275.57 mT / 2756 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x10x4 / 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 product - report

These information are the outcome of a physical analysis. Results are based on models for the class Nd₂Fe₁₄B. Real-world parameters might slightly deviate from the simulation results. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (pull vs gap) - power drop
MPL 40x10x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2755 Gs 275.5 mT	9.31 kg / 20.53 LBS 9310.0 g / 91.3 N	warning
1 mm	2413 Gs 241.3 mT	7.14 kg / 15.75 LBS 7143.1 g / 70.1 N	warning
2 mm	2044 Gs 204.4 mT	5.13 kg / 11.31 LBS 5128.9 g / 50.3 N	warning
3 mm	1703 Gs 170.3 mT	3.56 kg / 7.85 LBS 3559.5 g / 34.9 N	warning
5 mm	1173 Gs 117.3 mT	1.69 kg / 3.72 LBS 1688.2 g / 16.6 N	safe
10 mm	522 Gs 52.2 mT	0.33 kg / 0.74 LBS 334.9 g / 3.3 N	safe
15 mm	277 Gs 27.7 mT	0.09 kg / 0.21 LBS 94.2 g / 0.9 N	safe
20 mm	163 Gs 16.3 mT	0.03 kg / 0.07 LBS 32.8 g / 0.3 N	safe
30 mm	69 Gs 6.9 mT	0.01 kg / 0.01 LBS 5.8 g / 0.1 N	safe
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 LBS 0.5 g / 0.0 N	safe

Pulling power weakens drastically with every mm of gap. Keep in mind that even a very thin break (e.g., contamination, varnish, veneer) noticeably reduces the pull force. Magnets hold strongest at the point of direct contact; distance weakens the power. Observe how rapidly the parameters plummet, when the product does not adhere tightly to the steel surface. When designing the arrangement, avoid redundant distances.

Table 2: Vertical force (wall)
MPL 40x10x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.86 kg / 4.11 LBS 1862.0 g / 18.3 N
1 mm	Stal (~0.2)	1.43 kg / 3.15 LBS 1428.0 g / 14.0 N
2 mm	Stal (~0.2)	1.03 kg / 2.26 LBS 1026.0 g / 10.1 N
3 mm	Stal (~0.2)	0.71 kg / 1.57 LBS 712.0 g / 7.0 N
5 mm	Stal (~0.2)	0.34 kg / 0.75 LBS 338.0 g / 3.3 N
10 mm	Stal (~0.2)	0.07 kg / 0.15 LBS 66.0 g / 0.6 N
15 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 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 estimated shear load needed to start the slippage of the magnet vertically on a upright steel plate (assuming standard friction). This value depends on the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x10x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.79 kg / 6.16 LBS 2793.0 g / 27.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.86 kg / 4.11 LBS 1862.0 g / 18.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.93 kg / 2.05 LBS 931.0 g / 9.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.66 kg / 10.26 LBS 4655.0 g / 45.7 N

When placing a holder on a vertical plane (e.g., a board), it will maintain barely about 1/5 of nominal attraction strength. Gravity and a low friction coefficient mean that products slide down easier than they detach. Want to create a vertical fastening? Remember that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a much lighter weight. Using a rubber coating can effectively increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 40x10x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.93 kg / 2.05 LBS 931.0 g / 9.1 N
1 mm	25%	2.33 kg / 5.13 LBS 2327.5 g / 22.8 N
2 mm	50%	4.66 kg / 10.26 LBS 4655.0 g / 45.7 N
3 mm	75%	6.98 kg / 15.39 LBS 6982.5 g / 68.5 N
5 mm	100%	9.31 kg / 20.53 LBS 9310.0 g / 91.3 N
10 mm	100%	9.31 kg / 20.53 LBS 9310.0 g / 91.3 N
11 mm	100%	9.31 kg / 20.53 LBS 9310.0 g / 91.3 N
12 mm	100%	9.31 kg / 20.53 LBS 9310.0 g / 91.3 N

A thin metal plate is incapable of conduct the entire magnetic field, which wastes potential of the magnet. Should you attach a powerful product to a too thin substrate, the field will pass right through and the holding will be smaller. To achieve 100% of this magnet's power, you require a sufficiently solid piece of steel. The material oversaturation causes that on delicate walls (e.g., car bodies), the product shows lower pull force. We advise picking the steel dimension from these parameters.

Table 5: Working in heat (stability) - resistance threshold
MPL 40x10x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.31 kg / 20.53 LBS 9310.0 g / 91.3 N	OK
40 °C	-2.2%	9.11 kg / 20.07 LBS 9105.2 g / 89.3 N	OK
60 °C	-4.4%	8.90 kg / 19.62 LBS 8900.4 g / 87.3 N
80 °C	-6.6%	8.70 kg / 19.17 LBS 8695.5 g / 85.3 N
100 °C	-28.8%	6.63 kg / 14.61 LBS 6628.7 g / 65.0 N

Standard neodymium magnets change their properties parameters after exceeding the maximum temperature. Avoid high temperatures – high temperature can irreversibly destroy this product. As the temperature rises, the neodymium's force briefly decreases. Avoid using this magnet in hot environments exceeding its working range. Exceeding the critical threshold will lead to destruction of magnetism.

*Important note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MPL 40x10x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	18.71 kg / 41.25 LBS 4 164 Gs	2.81 kg / 6.19 LBS 2807 g / 27.5 N	N/A
1 mm	16.57 kg / 36.53 LBS 5 185 Gs	2.49 kg / 5.48 LBS 2486 g / 24.4 N	14.91 kg / 32.88 LBS ~0 Gs
2 mm	14.36 kg / 31.65 LBS 4 826 Gs	2.15 kg / 4.75 LBS 2153 g / 21.1 N	12.92 kg / 28.48 LBS ~0 Gs
3 mm	12.24 kg / 26.98 LBS 4 455 Gs	1.84 kg / 4.05 LBS 1836 g / 18.0 N	11.01 kg / 24.28 LBS ~0 Gs
5 mm	8.61 kg / 18.98 LBS 3 737 Gs	1.29 kg / 2.85 LBS 1291 g / 12.7 N	7.75 kg / 17.08 LBS ~0 Gs
10 mm	3.39 kg / 7.48 LBS 2 346 Gs	0.51 kg / 1.12 LBS 509 g / 5.0 N	3.05 kg / 6.73 LBS ~0 Gs
20 mm	0.67 kg / 1.48 LBS 1 045 Gs	0.10 kg / 0.22 LBS 101 g / 1.0 N	0.61 kg / 1.34 LBS ~0 Gs
50 mm	0.03 kg / 0.06 LBS 207 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs
60 mm	0.01 kg / 0.03 LBS 138 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
70 mm	0.01 kg / 0.01 LBS 96 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.01 LBS 69 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 51 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 39 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products attract each other from a wider radius than a neodymium and metal combination. The setup of magnet-to-magnet generates a stronger field and a further horizon of action. Designing a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the collision energy is massive. The repulsion force is marginally weaker than the connection force, but still significant.
*Flux density for N-N configuration is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).
Attention: Calculations apply to friction force of a pair of same magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MPL 40x10x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Mobile device	40 Gs (4.0 mT)	4.0 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

Extremely neodym field poses a large risk to electronics as well as medical implants. These magnets generate a field that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field penetrates the body and housings. Exceptional care must be exercised by people with hearing aids and drug dispensers. The risk also applies to: automatic timepieces, remotes, membranes, and displays. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MPL 40x10x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.72 km/h (7.98 m/s)	0.38 J
30 mm	48.67 km/h (13.52 m/s)	1.10 J
50 mm	62.82 km/h (17.45 m/s)	1.83 J
100 mm	88.83 km/h (24.68 m/s)	3.65 J

Magnetic elements are delicate – a violent impact against metal risks their cracking. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can cause material chips or injury to skin. Always hold the magnet during bringing near metal so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Corrosion resistance
MPL 40x10x4 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MPL 40x10x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 840 Mx	98.4 µWb
P_c Coefficient	0.26	Low (Flat)

Flux value emitted by the magnet pole. Key data in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Submerged application
MPL 40x10x4 / N38

Environment	Effective steel pull	Effect
Air (land)	9.31 kg	Standard
Water (riverbed)	10.66 kg (+1.35 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Note: On a vertical surface, the magnet holds merely ~20% of its max power.

2. Steel thickness impact

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

3. Thermal stability

*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) = 0.26

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.

Technical and environmental data

Chemical composition

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

Sustainability

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

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

batch number/type

id: 020150-2026

Quick Unit Converter

Pulling force

Force in lbs

Magnetic Field

Induction (Gs)

Induction (T)

Simply complete a single box, and the tool fill in everything else automatically.

View also offers

Product available Ships tomorrow

UMH 20x7x35 [M4] / N38 - magnetic holder with hook

8.59 ZŁ brutto / pcs

Product available Ships tomorrow

XT-5 magnetyzery do silników - DIESEL + olej - XT-5 magnetizer

98.99 ZŁ brutto / pcs

Product available Ships tomorrow

BM 700x180x75 [8xM10] - magnetic beam

6150.00 ZŁ brutto / pcs

Product available Ships tomorrow

UMT 20x25 white / N38 - board holder

3.49 ZŁ brutto / pcs

Component MPL 40x10x4 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 9.31 kg), this product is available immediately from our warehouse in Poland. Additionally, 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. Watch your fingers! Magnets with a force of 9.31 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 40x10x4 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. 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 40x10x4 / 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. In practice, this means that this magnet has the greatest attraction force on its main planes (40x10 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.

This model is characterized by dimensions 40x10x4 mm, which, at a weight of 12 g, makes it an element with high energy density. The key parameter here is the holding force amounting to approximately 9.31 kg (force ~91.33 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Pros

Apart from their consistent holding force, neodymium magnets have these key benefits:

Their power is durable, and after approximately ten years it decreases only by ~1% (according to research),
Magnets perfectly defend themselves against loss of magnetization caused by ambient magnetic noise,
By covering with a smooth coating of gold, the element acquires an proper look,
They are known for high magnetic induction at the operating surface, making them more effective,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Due to the option of flexible shaping and customization to unique requirements, neodymium magnets can be manufactured in a broad palette of shapes and sizes, which makes them more universal,
Significant place in high-tech industry – they are used in computer drives, electromotive mechanisms, advanced medical instruments, and modern systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Cons of neodymium magnets: tips and applications.

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
We recommend a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated forms.
Health risk related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Magnetic strength at its maximum – what affects it?

The specified lifting capacity concerns the peak performance, recorded under laboratory conditions, namely:

with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
possessing a massiveness of at least 10 mm to ensure full flux closure
characterized by smoothness
with zero gap (no impurities)
under vertical application of breakaway force (90-degree angle)
in stable room temperature

Determinants of lifting force in real conditions

Holding efficiency impacted by working environment parameters, including (from priority):

Distance – existence of foreign body (paint, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Plate thickness – too thin sheet causes magnetic saturation, causing part of the flux to be lost to the other side.
Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
Plate texture – smooth surfaces ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
Thermal environment – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force 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 lifting capacity.

Precautions when working with NdFeB magnets

Do not overheat magnets

Control the heat. Heating the magnet to high heat will destroy its properties and strength.

Electronic hazard

Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

Handling guide

Use magnets consciously. Their huge power can surprise even experienced users. Plan your moves and do not underestimate their power.

Skin irritation risks

Medical facts indicate that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or choose coated magnets.

Mechanical processing

Dust generated during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Life threat

Warning for patients: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Pinching danger

Watch your fingers. Two powerful magnets will snap together instantly with a force of massive weight, crushing anything in their path. Be careful!

Threat to navigation

An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Do not bring magnets close to a device to avoid damaging the sensors.

Magnet fragility

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Adults only

Absolutely keep magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are life-threatening.

Danger! More info about hazards in the article: Magnet Safety Guide.

MPL 40x10x4 / N38 - lamellar magnet

Technical specification - MPL 40x10x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - report

Table 1: Static force (pull vs gap) - power drop MPL 40x10x4 / N38

Table 2: Vertical force (wall) MPL 40x10x4 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 40x10x4 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MPL 40x10x4 / N38

Table 5: Working in heat (stability) - resistance threshold MPL 40x10x4 / N38

Table 6: Two magnets (attraction) - forces in the system MPL 40x10x4 / N38

Table 7: Protective zones (electronics) - precautionary measures MPL 40x10x4 / N38

Table 8: Collisions (kinetic energy) - warning MPL 40x10x4 / N38

Table 9: Corrosion resistance MPL 40x10x4 / N38

Table 10: Electrical data (Pc) MPL 40x10x4 / N38

Table 11: Submerged application MPL 40x10x4 / N38

1. Shear force

2. Steel thickness impact

3. Thermal stability

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

Chemical composition

Sustainability

Pulling force

Magnetic Field

View also offers

UMH 20x7x35 [M4] / N38 - magnetic holder with hook

XT-5 magnetyzery do silników - DIESEL + olej - XT-5 magnetizer

BM 700x180x75 [8xM10] - magnetic beam

UMT 20x25 white / N38 - board holder

Strengths and weaknesses of Nd2Fe14B magnets.

Pros

Disadvantages

Lifting parameters

Magnetic strength at its maximum – what affects it?

Determinants of lifting force in real conditions

Precautions when working with NdFeB magnets

Do not overheat magnets

Electronic hazard

Handling guide

Skin irritation risks

Mechanical processing

Life threat

Pinching danger

Threat to navigation

Magnet fragility

Adults only

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MPL 40x10x4 / N38

Table 2: Vertical force (wall)
MPL 40x10x4 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 40x10x4 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 40x10x4 / N38

Table 5: Working in heat (stability) - resistance threshold
MPL 40x10x4 / N38

Table 6: Two magnets (attraction) - forces in the system
MPL 40x10x4 / N38

Table 7: Protective zones (electronics) - precautionary measures
MPL 40x10x4 / N38

Table 8: Collisions (kinetic energy) - warning
MPL 40x10x4 / N38

Table 9: Corrosion resistance
MPL 40x10x4 / N38

Table 10: Electrical data (P_c)
MPL 40x10x4 / N38

Table 11: Submerged application
MPL 40x10x4 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.