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MW 15x4 / N38 - cylindrical 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

cylindrical magnet

Catalog no 010030

GTIN/EAN: 5906301810292

5.00

Diameter Ø

15 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

5.3 g

Magnetization Direction

↑ axial

Load capacity

4.22 kg / 41.38 N

Magnetic Induction

291.60 mT / 2916 Gs

Coating

[NiCuNi] Nickel

technical details »

1.968 ZŁ with VAT / pcs + price for transport

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Technical data - MW 15x4 / N38 - cylindrical magnet

Specification / characteristics - MW 15x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010030
GTIN/EAN	5906301810292
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	15 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	5.3 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.22 kg / 41.38 N
Magnetic Induction ~ ?	291.60 mT / 2916 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 15x4 / N38 - cylindrical 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 product - report

Presented data constitute the result of a mathematical simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Operational performance might slightly differ. Please consider these calculations as a supplementary guide for designers.

Table 1: Static pull force (pull vs gap) - characteristics
MW 15x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2915 Gs 291.5 mT	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N	medium risk
1 mm	2620 Gs 262.0 mT	3.41 kg / 7.51 LBS 3408.2 g / 33.4 N	medium risk
2 mm	2276 Gs 227.6 mT	2.57 kg / 5.67 LBS 2571.6 g / 25.2 N	medium risk
3 mm	1928 Gs 192.8 mT	1.85 kg / 4.07 LBS 1845.5 g / 18.1 N	safe
5 mm	1324 Gs 132.4 mT	0.87 kg / 1.92 LBS 870.3 g / 8.5 N	safe
10 mm	505 Gs 50.5 mT	0.13 kg / 0.28 LBS 126.7 g / 1.2 N	safe
15 mm	222 Gs 22.2 mT	0.02 kg / 0.05 LBS 24.4 g / 0.2 N	safe
20 mm	113 Gs 11.3 mT	0.01 kg / 0.01 LBS 6.3 g / 0.1 N	safe
30 mm	40 Gs 4.0 mT	0.00 kg / 0.00 LBS 0.8 g / 0.0 N	safe
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	safe

Pulling power decreases drastically with every mm of gap. Note that every additional insulation layer (e.g., dirt, paint, rust) strongly reduces the pull force. Magnetic products operate optimally at the point of direct contact; gap weakens the power. Notice how rapidly the parameters drop, when the magnet does not adhere directly to the metal substrate. When calculating the arrangement, avoid additional spacers.

Table 2: Vertical force (vertical surface)
MW 15x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.84 kg / 1.86 LBS 844.0 g / 8.3 N
1 mm	Stal (~0.2)	0.68 kg / 1.50 LBS 682.0 g / 6.7 N
2 mm	Stal (~0.2)	0.51 kg / 1.13 LBS 514.0 g / 5.0 N
3 mm	Stal (~0.2)	0.37 kg / 0.82 LBS 370.0 g / 3.6 N
5 mm	Stal (~0.2)	0.17 kg / 0.38 LBS 174.0 g / 1.7 N
10 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 26.0 g / 0.3 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 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

The following data defines the estimated holding capacity needed to initiate the sliding of the magnet down on a vertical steel wall (assuming typical friction). The holding force is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 15x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.27 kg / 2.79 LBS 1266.0 g / 12.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.84 kg / 1.86 LBS 844.0 g / 8.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.42 kg / 0.93 LBS 422.0 g / 4.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.11 kg / 4.65 LBS 2110.0 g / 20.7 N

When mounting a magnet on a vertical plane (e.g., a fridge), it will maintain barely about 20%-30% of nominal attraction strength. Gravity as well as a weak degree of grip influence the fact that products move down easier than they pull off. Designing a vertical fastening? Remember that the shear force is much weaker than the maximum static pull force. On a painted metal, the holder will give way down under a much lighter load. Application of an anti-slip layer can drastically raise the stability.

Table 4: Steel thickness (saturation) - power losses
MW 15x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.42 kg / 0.93 LBS 422.0 g / 4.1 N
1 mm	25%	1.06 kg / 2.33 LBS 1055.0 g / 10.3 N
2 mm	50%	2.11 kg / 4.65 LBS 2110.0 g / 20.7 N
3 mm	75%	3.17 kg / 6.98 LBS 3165.0 g / 31.0 N
5 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N
10 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N
11 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N
12 mm	100%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N

A thin metal plate cannot conduct the entire magnetic field, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the field will penetrate right through and the pull force will drop sharply. To achieve 100% of this magnet's potential, you require a sufficiently solid backing of metal. The saturation effect means that on thin elements (e.g., appliance housings), the magnet holds weaker. We suggest choosing the steel dimension from these parameters.

Table 5: Working in heat (material behavior) - power drop
MW 15x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.22 kg / 9.30 LBS 4220.0 g / 41.4 N	OK
40 °C	-2.2%	4.13 kg / 9.10 LBS 4127.2 g / 40.5 N	OK
60 °C	-4.4%	4.03 kg / 8.89 LBS 4034.3 g / 39.6 N
80 °C	-6.6%	3.94 kg / 8.69 LBS 3941.5 g / 38.7 N
100 °C	-28.8%	3.00 kg / 6.62 LBS 3004.6 g / 29.5 N

Classic neodymiums lose strength above the temperature limit. Watch out for overheating – heat can irreversibly destroy this magnet. With every degree above norm, the magnet's force momentarily decreases. Do not use this product near heat sources higher than its operating temperature limit. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MW 15x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	9.26 kg / 20.41 LBS 4 518 Gs	1.39 kg / 3.06 LBS 1389 g / 13.6 N	N/A
1 mm	8.40 kg / 18.53 LBS 5 555 Gs	1.26 kg / 2.78 LBS 1261 g / 12.4 N	7.56 kg / 16.68 LBS ~0 Gs
2 mm	7.48 kg / 16.48 LBS 5 239 Gs	1.12 kg / 2.47 LBS 1122 g / 11.0 N	6.73 kg / 14.84 LBS ~0 Gs
3 mm	6.54 kg / 14.42 LBS 4 901 Gs	0.98 kg / 2.16 LBS 981 g / 9.6 N	5.89 kg / 12.98 LBS ~0 Gs
5 mm	4.80 kg / 10.59 LBS 4 200 Gs	0.72 kg / 1.59 LBS 721 g / 7.1 N	4.32 kg / 9.53 LBS ~0 Gs
10 mm	1.91 kg / 4.21 LBS 2 648 Gs	0.29 kg / 0.63 LBS 286 g / 2.8 N	1.72 kg / 3.79 LBS ~0 Gs
20 mm	0.28 kg / 0.61 LBS 1 010 Gs	0.04 kg / 0.09 LBS 42 g / 0.4 N	0.25 kg / 0.55 LBS ~0 Gs
50 mm	0.00 kg / 0.01 LBS 128 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 79 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 52 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 36 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 26 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 19 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two magnetic products interact from a significantly greater distance than a neodymium and metal combination. The connection of magnet-to-magnet produces a massive flux and a further horizon of performance. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the impact force is extreme. The levitation is slightly lower than the attraction, but still significant.
*Field value for N-N configuration is approximately ~0 Gs in the exact middle of the gap (resulting from vector opposition).
* Calculations refer to friction force of dual same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MW 15x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Timepiece	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Extremely neodym field is a real danger to electronic devices and pacemakers. These neodymiums generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. Also at risk are: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MW 15x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.99 km/h (8.05 m/s)	0.17 J
30 mm	49.30 km/h (13.69 m/s)	0.50 J
50 mm	63.63 km/h (17.68 m/s)	0.83 J
100 mm	89.99 km/h (25.00 m/s)	1.66 J

Magnetic elements are very brittle – a collision with steel causes immediate chipping. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can cause material chips or injury to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when working with powerful specimens.

Table 9: Surface protection spec
MW 15x4 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MW 15x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 659 Mx	56.6 µWb
P_c Coefficient	0.37	Low (Flat)

Flux value passing through the pole surface. Essential parameter in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MW 15x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.22 kg	Standard
Water (riverbed)	4.83 kg (+0.61 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Warning: On a vertical wall, the magnet holds only a fraction of its max power.

2. Steel saturation

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

3. Thermal stability

*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) = 0.37

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

Elemental analysis

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: 010030-2026

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The presented product is an incredibly powerful cylindrical magnet, composed of modern NdFeB material, which, at dimensions of Ø15x4 mm, guarantees maximum efficiency. The MW 15x4 / N38 model features high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 4.22 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It successfully proves itself in DIY projects, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 41.38 N with a weight of only 5.3 g, this rod is indispensable in electronics and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most popular standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø15x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

The presented product is a neodymium magnet with precisely defined parameters: diameter 15 mm and height 4 mm. The value of 41.38 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.3 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 15 mm. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of neodymium magnets.

Benefits

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

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (in laboratory conditions),
They are extremely resistant to demagnetization induced by external field influence,
By applying a decorative coating of gold, the element has an nice look,
The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
Thanks to flexibility in constructing and the ability to customize to client solutions,
Fundamental importance in electronics industry – they are utilized in data components, electric motors, medical devices, and technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets: weaknesses and usage proposals

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
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 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
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
We recommend cover - magnetic mount, due to difficulties in producing threads inside the magnet and complicated forms.
Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these products can be problematic in diagnostics 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

Highest magnetic holding force – what it depends on?

Magnet power was defined for the most favorable conditions, assuming:

on a base made of structural steel, optimally conducting the magnetic flux
with a thickness no less than 10 mm
with an ideally smooth contact surface
without the slightest insulating layer between the magnet and steel
for force applied at a right angle (pull-off, not shear)
in neutral thermal conditions

Lifting capacity in practice – influencing factors

Effective lifting capacity is affected by specific conditions, including (from most important):

Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Metal type – different alloys attracts identically. Alloy additives worsen the interaction with the magnet.
Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
Temperature influence – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

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

Safety rules for work with NdFeB magnets

Warning for heart patients

Health Alert: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Nickel allergy

Some people have a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Extended handling might lead to skin redness. We recommend use protective gloves.

Fire risk

Dust produced during cutting of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Fragile material

Despite metallic appearance, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

GPS and phone interference

Be aware: neodymium magnets generate a field that interferes with sensitive sensors. Keep a separation from your phone, tablet, and GPS.

This is not a toy

Always store magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.

Conscious usage

Exercise caution. Neodymium magnets act from a distance and connect with massive power, often quicker than you can move away.

Crushing force

Watch your fingers. Two large magnets will join immediately with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!

Permanent damage

Standard neodymium magnets (N-type) lose power when the temperature exceeds 80°C. The loss of strength is permanent.

Safe distance

Device Safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

Safety First! More info about risks in the article: Magnet Safety Guide.

MW 15x4 / N38 - cylindrical magnet

Technical data - MW 15x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - report

Table 1: Static pull force (pull vs gap) - characteristics MW 15x4 / N38

Table 2: Vertical force (vertical surface) MW 15x4 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MW 15x4 / N38

Table 4: Steel thickness (saturation) - power losses MW 15x4 / N38

Table 5: Working in heat (material behavior) - power drop MW 15x4 / N38

Table 6: Two magnets (attraction) - forces in the system MW 15x4 / N38

Table 7: Protective zones (electronics) - warnings MW 15x4 / N38

Table 8: Dynamics (kinetic energy) - collision effects MW 15x4 / N38

Table 9: Surface protection spec MW 15x4 / N38

Table 10: Electrical data (Flux) MW 15x4 / N38

Table 11: Underwater work (magnet fishing) MW 15x4 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Sustainability

Magnet pull force

Magnetic Induction

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Advantages as well as disadvantages of neodymium magnets.

Benefits

Disadvantages

Pull force analysis

Highest magnetic holding force – what it depends on?

Lifting capacity in practice – influencing factors

Safety rules for work with NdFeB magnets

Warning for heart patients

Nickel allergy

Fire risk

Fragile material

GPS and phone interference

This is not a toy

Conscious usage

Crushing force

Permanent damage

Safe distance

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - characteristics
MW 15x4 / N38

Table 2: Vertical force (vertical surface)
MW 15x4 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 15x4 / N38

Table 4: Steel thickness (saturation) - power losses
MW 15x4 / N38

Table 5: Working in heat (material behavior) - power drop
MW 15x4 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 15x4 / N38

Table 7: Protective zones (electronics) - warnings
MW 15x4 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MW 15x4 / N38

Table 9: Surface protection spec
MW 15x4 / N38

Table 10: Electrical data (Flux)
MW 15x4 / N38

Table 11: Underwater work (magnet fishing)
MW 15x4 / N38