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MPL 40x15x5 / 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 020153

GTIN/EAN: 5906301811596

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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Technical data - MPL 40x15x5 / N38 - lamellar magnet

Specification / characteristics - MPL 40x15x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020153
GTIN/EAN	5906301811596
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 40x15x5 / 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 analysis of the assembly - data

Presented values constitute the outcome of a physical simulation. Results are based on algorithms for the material Nd₂Fe₁₄B. Operational conditions may deviate from the simulation results. Treat these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - interaction chart
MPL 40x15x5 / 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 pounds 11350.0 g / 111.3 N	dangerous!
1 mm	2306 Gs 230.6 mT	9.73 kg / 21.45 pounds 9731.3 g / 95.5 N	strong
2 mm	2095 Gs 209.5 mT	8.03 kg / 17.70 pounds 8028.8 g / 78.8 N	strong
3 mm	1877 Gs 187.7 mT	6.45 kg / 14.21 pounds 6445.4 g / 63.2 N	strong
5 mm	1472 Gs 147.2 mT	3.97 kg / 8.74 pounds 3965.1 g / 38.9 N	strong
10 mm	792 Gs 79.2 mT	1.15 kg / 2.53 pounds 1147.1 g / 11.3 N	weak grip
15 mm	454 Gs 45.4 mT	0.38 kg / 0.83 pounds 376.9 g / 3.7 N	weak grip
20 mm	278 Gs 27.8 mT	0.14 kg / 0.31 pounds 141.4 g / 1.4 N	weak grip
30 mm	122 Gs 12.2 mT	0.03 kg / 0.06 pounds 27.0 g / 0.3 N	weak grip
50 mm	35 Gs 3.5 mT	0.00 kg / 0.01 pounds 2.3 g / 0.0 N	weak grip

Magnetic force drops drastically with every subsequent millimeter of spacing. Remember that even a microscopic distance (e.g., dirt, varnish, rust) strongly diminishes the holding power. Magnets hold optimally in perfect adhesion; gap nullifies the force. Observe how rapidly the parameters plummet, when the magnet does not touch directly to the steel surface. When planning the mounting, discard redundant distances.

Table 2: Vertical hold (wall)
MPL 40x15x5 / N38

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

This section defines the approximate shear load necessary to start the slippage of the magnet down against a vertical steel plate (considering typical friction). This parameter varies with the distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 40x15x5 / 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 pounds 3405.0 g / 33.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.27 kg / 5.00 pounds 2270.0 g / 22.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.14 kg / 2.50 pounds 1135.0 g / 11.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.68 kg / 12.51 pounds 5675.0 g / 55.7 N

When mounting a holder on a upright plane (e.g., a car body), it will only hold just about 1/5 of nominal attraction strength. Gravity and a weak degree of grip mean that holders move down easier than they detach. Planning a vertical fastening? Consider that the sliding force is noticeably lower than the maximum static pull force. On a painted metal, the holder will slide down under a significantly smaller weight. Application of an anti-slip coating can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x15x5 / N38

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

A too thin steel is unable to absorb the entire magnetic field, which squanders power of the holder. Should you install a neodymium to a thin surface, the magnetism will penetrate right through and the pull force will drop sharply. To utilize full efficiency of this magnet's potential, you need a suitably thick element of steel. The saturation effect causes that on thin elements (e.g., appliance housings), the product holds weaker. We advise picking the steel cross-section according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
MPL 40x15x5 / N38

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

Standard neodymium magnets irreversibly lose parameters above the temperature limit. Watch out for overheating – heat can irreversibly destroy this magnet. As the temperature rises, the neodymium's power temporarily drops. Do not use this product near heat sources higher than its safe range. Ignoring the limit will result in permanent loss of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Flat magnets (low Pc) may lose charge permanently sooner than long magnets. Red status in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MPL 40x15x5 / 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 pounds 3 961 Gs	3.44 kg / 7.59 pounds 3441 g / 33.8 N	N/A
1 mm	21.37 kg / 47.11 pounds 4 807 Gs	3.21 kg / 7.07 pounds 3205 g / 31.4 N	19.23 kg / 42.40 pounds ~0 Gs
2 mm	19.67 kg / 43.37 pounds 4 612 Gs	2.95 kg / 6.50 pounds 2951 g / 28.9 N	17.70 kg / 39.03 pounds ~0 Gs
3 mm	17.94 kg / 39.55 pounds 4 404 Gs	2.69 kg / 5.93 pounds 2691 g / 26.4 N	16.15 kg / 35.59 pounds ~0 Gs
5 mm	14.58 kg / 32.15 pounds 3 971 Gs	2.19 kg / 4.82 pounds 2187 g / 21.5 N	13.12 kg / 28.93 pounds ~0 Gs
10 mm	8.01 kg / 17.67 pounds 2 944 Gs	1.20 kg / 2.65 pounds 1202 g / 11.8 N	7.21 kg / 15.90 pounds ~0 Gs
20 mm	2.32 kg / 5.11 pounds 1 583 Gs	0.35 kg / 0.77 pounds 348 g / 3.4 N	2.09 kg / 4.60 pounds ~0 Gs
50 mm	0.12 kg / 0.26 pounds 359 Gs	0.02 kg / 0.04 pounds 18 g / 0.2 N	0.11 kg / 0.24 pounds ~0 Gs
60 mm	0.05 kg / 0.12 pounds 243 Gs	0.01 kg / 0.02 pounds 8 g / 0.1 N	0.05 kg / 0.11 pounds ~0 Gs
70 mm	0.03 kg / 0.06 pounds 171 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
80 mm	0.01 kg / 0.03 pounds 124 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.03 pounds ~0 Gs
90 mm	0.01 kg / 0.02 pounds 92 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.01 pounds 70 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products attract each other from a much further distance than a magnet and sheet combination. Such a system of two magnets generates a stronger field and a larger range of performance. Designing a powerful holder? Use a pair of magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the collision energy is huge. The repulsion force is slightly lower than the connection force, but still significant.
*The magnetic induction for N-N configuration drops to ~0 Gs at the midpoint of the gap (due to field cancellation).
Important: Figures apply to friction force of a pair of same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MPL 40x15x5 / 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
Mobile device	40 Gs (4.0 mT)	5.0 cm
Remote	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

Powerful magnet radiation poses a real danger to electronics and medical implants. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and plastic. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MPL 40x15x5 / 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

NdFeB products are very brittle – a collision with steel can result in shattering. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Striking energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Use safety goggles when playing with powerful specimens.

Table 9: Surface protection spec
MPL 40x15x5 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MPL 40x15x5 / N38

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

Flux value passing through the pole surface. Key data in coil applications and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 40x15x5 / N38

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

Warning: 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

*Caution: On a vertical wall, the magnet holds just a fraction of its nominal pull.

2. Plate thickness effect

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.26

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

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: 020153-2026

Measurement Calculator

Magnet pull force

Force in kg

Pounds (lbs)

Magnetic Induction

Induction (T)

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MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

9.93 ZŁ brutto / pcs

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 40x15x5 mm and a weight of 22.5 g, guarantees the highest quality connection. This magnetic block with a force of 111.37 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

The key to success is shifting the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 40x15x5 / 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 40x15x5 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 40x15x5 / N38, it is best to use strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

Standardly, the MPL 40x15x5 / 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. This is the most popular configuration for block magnets used in separators and holders.

The presented product is a neodymium magnet with precisely defined parameters: 40 mm (length), 15 mm (width), and 5 mm (thickness). It is a magnetic block with dimensions 40x15x5 mm and a self-weight of 22.5 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Pros and cons of neodymium magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
They show high resistance to demagnetization induced by external field influence,
By applying a decorative coating of nickel, the element has an elegant look,
They show high magnetic induction at the operating surface, which affects their effectiveness,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Due to the ability of flexible molding and adaptation to individualized requirements, NdFeB magnets can be produced in a wide range of shapes and sizes, which amplifies use scope,
Fundamental importance in high-tech industry – they serve a role in magnetic memories, electromotive mechanisms, medical equipment, also other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Cons

Disadvantages of neodymium magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Limited ability of creating threads in the magnet and complex forms - recommended is casing - magnet mounting.
Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products can complicate diagnosis medical in case of swallowing.
Due to complex production process, their price exceeds standard values,

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

The load parameter shown concerns the maximum value, obtained under laboratory conditions, meaning:

on a plate made of mild steel, perfectly concentrating the magnetic field
whose thickness equals approx. 10 mm
characterized by lack of roughness
with total lack of distance (no paint)
under perpendicular force direction (90-degree angle)
at conditions approx. 20°C

Key elements affecting lifting force

Bear in mind that the magnet holding may be lower influenced by elements below, in order of importance:

Distance – the presence of foreign body (paint, dirt, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Load vector – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – too thin steel causes magnetic saturation, causing part of the flux to be wasted to the other side.
Metal type – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
Base smoothness – the more even the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was measured by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.

H&S for magnets

Keep away from computers

Very strong magnetic fields can erase data on payment cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

Respect the power

Handle with care. Neodymium magnets attract from a long distance and snap with huge force, often faster than you can move away.

Metal Allergy

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease working with magnets and use protective gear.

Serious injuries

Mind your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!

Precision electronics

Note: neodymium magnets generate a field that confuses precision electronics. Keep a separation from your mobile, device, and GPS.

Machining danger

Powder produced during grinding of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Medical interference

Patients with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Eye protection

Protect your eyes. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.

No play value

Only for adults. Small elements can be swallowed, leading to intestinal necrosis. Store away from kids and pets.

Operating temperature

Control the heat. Heating the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.

Security! Need more info? Read our article: Are neodymium magnets dangerous?

MPL 40x15x5 / N38 - lamellar magnet

Technical data - MPL 40x15x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the assembly - data

Table 1: Static pull force (force vs gap) - interaction chart MPL 40x15x5 / N38

Table 2: Vertical hold (wall) MPL 40x15x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MPL 40x15x5 / N38

Table 4: Steel thickness (substrate influence) - power losses MPL 40x15x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MPL 40x15x5 / N38

Table 6: Two magnets (repulsion) - field range MPL 40x15x5 / N38

Table 7: Safety (HSE) (implants) - warnings MPL 40x15x5 / N38

Table 8: Collisions (kinetic energy) - warning MPL 40x15x5 / N38

Table 9: Surface protection spec MPL 40x15x5 / N38

Table 10: Electrical data (Pc) MPL 40x15x5 / N38

Table 11: Physics of underwater searching MPL 40x15x5 / N38

1. Sliding resistance

2. Plate thickness effect

3. Temperature resistance

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

Material specification

Environmental data

Magnet pull force

Magnetic Induction

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MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

Pros and cons of neodymium magnets.

Advantages

Cons

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

Key elements affecting lifting force

H&S for magnets

Keep away from computers

Respect the power

Metal Allergy

Serious injuries

Precision electronics

Machining danger

Medical interference

Eye protection

No play value

Operating temperature

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MPL 40x15x5 / N38

Table 2: Vertical hold (wall)
MPL 40x15x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 40x15x5 / N38

Table 4: Steel thickness (substrate influence) - power losses
MPL 40x15x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MPL 40x15x5 / N38

Table 6: Two magnets (repulsion) - field range
MPL 40x15x5 / N38

Table 7: Safety (HSE) (implants) - warnings
MPL 40x15x5 / N38

Table 8: Collisions (kinetic energy) - warning
MPL 40x15x5 / N38

Table 9: Surface protection spec
MPL 40x15x5 / N38

Table 10: Electrical data (P_c)
MPL 40x15x5 / N38

Table 11: Physics of underwater searching
MPL 40x15x5 / N38