MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

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MPL 40x15x5x2[7/3.5] / 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 020154

GTIN/EAN: 5906301811602

5.00

length

40 mm [±0,1 mm]

Width

15 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

22.5 g

Magnetization Direction

↑ axial

Load capacity

11.35 kg / 111.37 N

Magnetic Induction

249.11 mT / 2491 Gs

Coating

[NiCuNi] Nickel

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15.07 ZŁ with VAT / pcs + price for transport

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Technical data - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

properties

properties	values
Cat. no.	020154
GTIN/EAN	5906301811602
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	15 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	22.5 g
Magnetization Direction	↑ axial
Load capacity ~ ?	11.35 kg / 111.37 N
Magnetic Induction ~ ?	249.11 mT / 2491 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x15x5x2[7/3.5] / 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 analysis of the magnet - technical parameters

Presented data constitute the result of a physical analysis. Results are based on models for the material Nd₂Fe₁₄B. Actual parameters may deviate from the simulation results. Please consider these data as a reference point for designers.

Table 1: Static pull force (pull vs gap) - characteristics
MPL 40x15x5x2[7/3.5] / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2490 Gs 249.0 mT	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N	dangerous!
1 mm	2306 Gs 230.6 mT	9.73 kg / 21.45 lbs 9731.3 g / 95.5 N	strong
2 mm	2095 Gs 209.5 mT	8.03 kg / 17.70 lbs 8028.8 g / 78.8 N	strong
3 mm	1877 Gs 187.7 mT	6.45 kg / 14.21 lbs 6445.4 g / 63.2 N	strong
5 mm	1472 Gs 147.2 mT	3.97 kg / 8.74 lbs 3965.1 g / 38.9 N	strong
10 mm	792 Gs 79.2 mT	1.15 kg / 2.53 lbs 1147.1 g / 11.3 N	low risk
15 mm	454 Gs 45.4 mT	0.38 kg / 0.83 lbs 376.9 g / 3.7 N	low risk
20 mm	278 Gs 27.8 mT	0.14 kg / 0.31 lbs 141.4 g / 1.4 N	low risk
30 mm	122 Gs 12.2 mT	0.03 kg / 0.06 lbs 27.0 g / 0.3 N	low risk
50 mm	35 Gs 3.5 mT	0.00 kg / 0.01 lbs 2.3 g / 0.0 N	low risk

Magnetic force decreases significantly with every mm of gap. Keep in mind that every additional insulation layer (e.g., dirt, paint, rust) noticeably diminishes the holding power. Neodymiums hold most effectively in perfect adhesion; distance kills the force. Observe how flashily the pull force fall, when the magnet does not touch flatly to the steel surface. When calculating the arrangement, discard unnecessary gaps.

Table 2: Sliding load (vertical surface)
MPL 40x15x5x2[7/3.5] / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.27 kg / 5.00 lbs 2270.0 g / 22.3 N
1 mm	Stal (~0.2)	1.95 kg / 4.29 lbs 1946.0 g / 19.1 N
2 mm	Stal (~0.2)	1.61 kg / 3.54 lbs 1606.0 g / 15.8 N
3 mm	Stal (~0.2)	1.29 kg / 2.84 lbs 1290.0 g / 12.7 N
5 mm	Stal (~0.2)	0.79 kg / 1.75 lbs 794.0 g / 7.8 N
10 mm	Stal (~0.2)	0.23 kg / 0.51 lbs 230.0 g / 2.3 N
15 mm	Stal (~0.2)	0.08 kg / 0.17 lbs 76.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 28.0 g / 0.3 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data presents the estimated force sufficient to start the shifting of the magnet down against a vertical metal surface (assuming typical friction). This value is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.41 kg / 7.51 lbs 3405.0 g / 33.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.27 kg / 5.00 lbs 2270.0 g / 22.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.14 kg / 2.50 lbs 1135.0 g / 11.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.68 kg / 12.51 lbs 5675.0 g / 55.7 N

When mounting a element on a vertical plane (e.g., a board), it will maintain just about 20%-30% of its nominal power. Gravity and a low friction coefficient influence the fact that holders slip easier than they pop off the substrate. Designing a vertical fastening? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will slide down under a significantly smaller weight. Utilizing a rubberized pad can drastically increase the grip.

Table 4: Steel thickness (saturation) - power losses
MPL 40x15x5x2[7/3.5] / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.57 kg / 1.25 lbs 567.5 g / 5.6 N
1 mm	13%	1.42 kg / 3.13 lbs 1418.8 g / 13.9 N
2 mm	25%	2.84 kg / 6.26 lbs 2837.5 g / 27.8 N
3 mm	38%	4.26 kg / 9.38 lbs 4256.3 g / 41.8 N
5 mm	63%	7.09 kg / 15.64 lbs 7093.8 g / 69.6 N
10 mm	100%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N
11 mm	100%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N
12 mm	100%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N

A thin metal plate is not enough to focus the entire magnetic field, which squanders power of the holder. Should you install a neodymium to a weak sheet, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this neodymium's potential, you require a sufficiently solid piece of steel. The material oversaturation means that on sheet metal structures (e.g., car bodies), the magnet works worse. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal resistance (stability) - power drop
MPL 40x15x5x2[7/3.5] / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	11.35 kg / 25.02 lbs 11350.0 g / 111.3 N	OK
40 °C	-2.2%	11.10 kg / 24.47 lbs 11100.3 g / 108.9 N	OK
60 °C	-4.4%	10.85 kg / 23.92 lbs 10850.6 g / 106.4 N
80 °C	-6.6%	10.60 kg / 23.37 lbs 10600.9 g / 104.0 N
100 °C	-28.8%	8.08 kg / 17.82 lbs 8081.2 g / 79.3 N

Classic neodymiums irreversibly lose strength above the temperature limit. Watch out for overheating – heat can permanently destroy this product. With every degree above norm, the magnet's capacity briefly decreases. Avoid using this product in hot environments exceeding its safe range. Exceeding the critical threshold will lead to irreversible degradation of magnetism.

*Engineering note: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) may lose charge permanently under lower heat stress than long magnets. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 40x15x5x2[7/3.5] / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	22.94 kg / 50.58 lbs 3 961 Gs	3.44 kg / 7.59 lbs 3441 g / 33.8 N	N/A
1 mm	21.37 kg / 47.11 lbs 4 807 Gs	3.21 kg / 7.07 lbs 3205 g / 31.4 N	19.23 kg / 42.40 lbs ~0 Gs
2 mm	19.67 kg / 43.37 lbs 4 612 Gs	2.95 kg / 6.50 lbs 2951 g / 28.9 N	17.70 kg / 39.03 lbs ~0 Gs
3 mm	17.94 kg / 39.55 lbs 4 404 Gs	2.69 kg / 5.93 lbs 2691 g / 26.4 N	16.15 kg / 35.59 lbs ~0 Gs
5 mm	14.58 kg / 32.15 lbs 3 971 Gs	2.19 kg / 4.82 lbs 2187 g / 21.5 N	13.12 kg / 28.93 lbs ~0 Gs
10 mm	8.01 kg / 17.67 lbs 2 944 Gs	1.20 kg / 2.65 lbs 1202 g / 11.8 N	7.21 kg / 15.90 lbs ~0 Gs
20 mm	2.32 kg / 5.11 lbs 1 583 Gs	0.35 kg / 0.77 lbs 348 g / 3.4 N	2.09 kg / 4.60 lbs ~0 Gs
50 mm	0.12 kg / 0.26 lbs 359 Gs	0.02 kg / 0.04 lbs 18 g / 0.2 N	0.11 kg / 0.24 lbs ~0 Gs
60 mm	0.05 kg / 0.12 lbs 243 Gs	0.01 kg / 0.02 lbs 8 g / 0.1 N	0.05 kg / 0.11 lbs ~0 Gs
70 mm	0.03 kg / 0.06 lbs 171 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs
80 mm	0.01 kg / 0.03 lbs 124 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.03 lbs ~0 Gs
90 mm	0.01 kg / 0.02 lbs 92 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 70 Gs	0.00 kg / 0.00 lbs 1 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 magnet and steel setup. The setup of two magnets produces a massive flux and a larger range of performance. Want to build a solid fastener? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the pinch force is huge. The levitation is slightly lower than the attraction, but still large.
*Flux density for N-N configuration is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Note: Results apply to sliding force of two identical magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MPL 40x15x5x2[7/3.5] / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.5 cm
Hearing aid	10 Gs (1.0 mT)	8.0 cm
Mechanical watch	20 Gs (2.0 mT)	6.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.0 cm
Car key	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

A strong magnetic field is a serious hazard to electronics as well as medical implants. These magnets generate a field that destroys function of digital equipment. Notice: the invisible magnetic field penetrates the body and housings. Special caution must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - collision effects
MPL 40x15x5x2[7/3.5] / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.04 km/h (6.68 m/s)	0.50 J
30 mm	39.29 km/h (10.91 m/s)	1.34 J
50 mm	50.66 km/h (14.07 m/s)	2.23 J
100 mm	71.63 km/h (19.90 m/s)	4.45 J

Neodymium magnets are delicate – a collision with steel can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can cause material chips or dangerous crushing to fingers. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Surface protection spec
MPL 40x15x5x2[7/3.5] / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MPL 40x15x5x2[7/3.5] / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	14 969 Mx	149.7 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux emitted by the magnet pole. Essential parameter in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 40x15x5x2[7/3.5] / N38

Environment	Effective steel pull	Effect
Air (land)	11.35 kg	Standard
Water (riverbed)	13.00 kg (+1.65 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Shear force

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

2. Plate thickness effect

*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Temperature resistance

*For N38 grade, 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.

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%

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: 020154-2026

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This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x15x5 mm and a weight of 22.5 g, guarantees premium class connection. This rectangular block with a force of 111.37 N is ready for shipment in 24h, allowing for rapid realization of your project. 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. To separate the MPL 40x15x5x2[7/3.5] / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, 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.

They constitute a key element in the production of generators and material handling systems. 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.

For mounting flat magnets MPL 40x15x5x2[7/3.5] / N38, we recommend utilizing 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 40x15x5x2[7/3.5] / 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 (40x15 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: 40 mm (length), 15 mm (width), and 5 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 11.35 kg (force ~111.37 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 neodymium magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:

They retain full power for almost ten years – the drop is just ~1% (in theory),
Neodymium magnets remain remarkably resistant to loss of magnetic properties caused by external magnetic fields,
A magnet with a metallic nickel surface is more attractive,
The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
In view of the possibility of accurate forming and adaptation to unique projects, NdFeB magnets can be modeled in a broad palette of forms and dimensions, which expands the range of possible applications,
Significant place in modern technologies – they are utilized in magnetic memories, electromotive mechanisms, medical equipment, and other advanced devices.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
NdFeB magnets demagnetize 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
They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing threads and complex shapes in magnets, we propose using cover - magnetic mount.
Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Additionally, small components of these devices can complicate diagnosis medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting force for a neodymium magnet – what it depends on?

The load parameter shown refers to the peak performance, measured under optimal environment, specifically:

with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
with a cross-section minimum 10 mm
with a surface cleaned and smooth
with direct contact (without coatings)
during detachment in a direction perpendicular to the plane
in stable room temperature

Determinants of lifting force in real conditions

During everyday use, the actual lifting capacity depends on many variables, listed from the most important:

Clearance – existence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Base massiveness – too thin sheet does not accept the full field, causing part of the power to be lost to the other side.
Steel grade – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
Temperature – temperature increase causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was assessed using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Safe handling of NdFeB magnets

Magnetic interference

Note: neodymium magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and navigation systems.

Power loss in heat

Control the heat. Exposing the magnet to high heat will permanently weaken its magnetic structure and strength.

ICD Warning

Medical warning: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Data carriers

Powerful magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Warning for allergy sufferers

Medical facts indicate that the nickel plating (the usual finish) is a common allergen. For allergy sufferers, prevent direct skin contact or opt for versions in plastic housing.

Bone fractures

Large magnets can smash fingers in a fraction of a second. Never put your hand between two strong magnets.

Fire risk

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

Handling guide

Handle magnets consciously. Their powerful strength can surprise even professionals. Stay alert and respect their power.

Beware of splinters

NdFeB magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Product not for children

Neodymium magnets are not intended for children. Swallowing a few magnets can lead to them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Danger! Want to know more? Check our post: Why are neodymium magnets dangerous?

MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Technical data - MPL 40x15x5x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - technical parameters

Table 1: Static pull force (pull vs gap) - characteristics MPL 40x15x5x2[7/3.5] / N38

Table 2: Sliding load (vertical surface) MPL 40x15x5x2[7/3.5] / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 40x15x5x2[7/3.5] / N38

Table 4: Steel thickness (saturation) - power losses MPL 40x15x5x2[7/3.5] / N38

Table 5: Thermal resistance (stability) - power drop MPL 40x15x5x2[7/3.5] / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MPL 40x15x5x2[7/3.5] / N38

Table 7: Hazards (implants) - precautionary measures MPL 40x15x5x2[7/3.5] / N38

Table 8: Collisions (kinetic energy) - collision effects MPL 40x15x5x2[7/3.5] / N38

Table 9: Surface protection spec MPL 40x15x5x2[7/3.5] / N38

Table 10: Construction data (Pc) MPL 40x15x5x2[7/3.5] / N38

Table 11: Physics of underwater searching MPL 40x15x5x2[7/3.5] / N38

1. Shear force

2. Plate thickness effect

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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MW 12x8 / N38 - cylindrical magnet

Strengths and weaknesses of neodymium magnets.

Benefits

Cons

Pull force analysis

Maximum lifting force for a neodymium magnet – what it depends on?

Determinants of lifting force in real conditions

Safe handling of NdFeB magnets

Magnetic interference

Power loss in heat

ICD Warning

Data carriers

Warning for allergy sufferers

Bone fractures

Fire risk

Handling guide

Beware of splinters

Product not for children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MPL 40x15x5x2[7/3.5] / N38

Table 2: Sliding load (vertical surface)
MPL 40x15x5x2[7/3.5] / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 40x15x5x2[7/3.5] / N38

Table 4: Steel thickness (saturation) - power losses
MPL 40x15x5x2[7/3.5] / N38

Table 5: Thermal resistance (stability) - power drop
MPL 40x15x5x2[7/3.5] / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MPL 40x15x5x2[7/3.5] / N38

Table 7: Hazards (implants) - precautionary measures
MPL 40x15x5x2[7/3.5] / N38

Table 8: Collisions (kinetic energy) - collision effects
MPL 40x15x5x2[7/3.5] / N38

Table 9: Surface protection spec
MPL 40x15x5x2[7/3.5] / N38

Table 10: Construction data (P_c)
MPL 40x15x5x2[7/3.5] / N38

Table 11: Physics of underwater searching
MPL 40x15x5x2[7/3.5] / N38