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MW 20x18 / 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 010040

GTIN/EAN: 5906301810391

Diameter Ø

20 mm [±0,1 mm]

Height

18 mm [±0,1 mm]

Weight

42.41 g

Magnetization Direction

↑ axial

Load capacity

13.19 kg / 129.35 N

Magnetic Induction

541.64 mT / 5416 Gs

Coating

[NiCuNi] Nickel

see technical data »

23.54 ZŁ with VAT / pcs + price for transport

19.14 ZŁ net + 23% VAT / pcs

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Technical of the product - MW 20x18 / N38 - cylindrical magnet

Specification / characteristics - MW 20x18 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010040
GTIN/EAN	5906301810391
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	20 mm [±0,1 mm]
Height	18 mm [±0,1 mm]
Weight	42.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	13.19 kg / 129.35 N
Magnetic Induction ~ ?	541.64 mT / 5416 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x18 / 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 magnet - data

Presented values are the outcome of a physical analysis. Results rely on models for the class Nd₂Fe₁₄B. Actual conditions may differ. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs gap) - power drop
MW 20x18 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5414 Gs 541.4 mT	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N	critical level
1 mm	4870 Gs 487.0 mT	10.67 kg / 23.52 LBS 10669.5 g / 104.7 N	critical level
2 mm	4330 Gs 433.0 mT	8.43 kg / 18.59 LBS 8434.2 g / 82.7 N	warning
3 mm	3816 Gs 381.6 mT	6.55 kg / 14.45 LBS 6552.7 g / 64.3 N	warning
5 mm	2913 Gs 291.3 mT	3.82 kg / 8.42 LBS 3818.4 g / 37.5 N	warning
10 mm	1455 Gs 145.5 mT	0.95 kg / 2.10 LBS 952.2 g / 9.3 N	weak grip
15 mm	775 Gs 77.5 mT	0.27 kg / 0.60 LBS 270.1 g / 2.7 N	weak grip
20 mm	450 Gs 45.0 mT	0.09 kg / 0.20 LBS 91.3 g / 0.9 N	weak grip
30 mm	188 Gs 18.8 mT	0.02 kg / 0.04 LBS 15.9 g / 0.2 N	weak grip
50 mm	54 Gs 5.4 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	weak grip

Pulling power weakens sharply per each millimeter of spacing. Note that every additional insulation layer (e.g., contamination, varnish, dust) strongly diminishes the holding power. Neodymiums operate optimally during direct contact; air break kills the power. Analyze how rapidly the parameters plummet, when the magnet does not touch tightly to the steel surface. When calculating the assembly, discard additional spacers.

Table 2: Sliding force (vertical surface)
MW 20x18 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.64 kg / 5.82 LBS 2638.0 g / 25.9 N
1 mm	Stal (~0.2)	2.13 kg / 4.70 LBS 2134.0 g / 20.9 N
2 mm	Stal (~0.2)	1.69 kg / 3.72 LBS 1686.0 g / 16.5 N
3 mm	Stal (~0.2)	1.31 kg / 2.89 LBS 1310.0 g / 12.9 N
5 mm	Stal (~0.2)	0.76 kg / 1.68 LBS 764.0 g / 7.5 N
10 mm	Stal (~0.2)	0.19 kg / 0.42 LBS 190.0 g / 1.9 N
15 mm	Stal (~0.2)	0.05 kg / 0.12 LBS 54.0 g / 0.5 N
20 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 LBS 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

This section calculates the estimated force required to cause the slippage of the magnet vertically along a vertical steel wall (considering typical friction coefficient). This value is a function of the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 20x18 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.96 kg / 8.72 LBS 3957.0 g / 38.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.64 kg / 5.82 LBS 2638.0 g / 25.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.32 kg / 2.91 LBS 1319.0 g / 12.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	6.60 kg / 14.54 LBS 6595.0 g / 64.7 N

When mounting a element on a upright plane (e.g., a board), it will maintain just approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip mean that holders move down faster than they pull off. Designing a hanger? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a painted metal, the element will slide down under a much lighter weight. Using a rubber pad can drastically improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
MW 20x18 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.66 kg / 1.45 LBS 659.5 g / 6.5 N
1 mm	13%	1.65 kg / 3.63 LBS 1648.8 g / 16.2 N
2 mm	25%	3.30 kg / 7.27 LBS 3297.5 g / 32.3 N
3 mm	38%	4.95 kg / 10.90 LBS 4946.3 g / 48.5 N
5 mm	63%	8.24 kg / 18.17 LBS 8243.8 g / 80.9 N
10 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N
11 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N
12 mm	100%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N

A thin sheet is not enough to conduct the entire magnetic field, which squanders power of the holder. If you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the attraction force will be weaker. To achieve the maximum of this magnet's power, you require a sufficiently solid backing of metal. The saturation effect means that on sheet metal structures (e.g., appliance housings), the product shows lower pull force. We advise picking the steel thickness from these parameters.

Table 5: Thermal stability (stability) - resistance threshold
MW 20x18 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	13.19 kg / 29.08 LBS 13190.0 g / 129.4 N	OK
40 °C	-2.2%	12.90 kg / 28.44 LBS 12899.8 g / 126.5 N	OK
60 °C	-4.4%	12.61 kg / 27.80 LBS 12609.6 g / 123.7 N	OK
80 °C	-6.6%	12.32 kg / 27.16 LBS 12319.5 g / 120.9 N
100 °C	-28.8%	9.39 kg / 20.70 LBS 9391.3 g / 92.1 N

Ordinary NdFeB products change their properties power above the temperature limit. Watch out for overheating – heat can irreversibly damage this magnet. With every degree above norm, the neodymium's capacity momentarily lowers. Refrain from using this magnet near heat sources higher than its safe range. Ignoring the limit will cause destruction of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently sooner compared to rod magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MW 20x18 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	56.78 kg / 125.17 LBS 5 968 Gs	8.52 kg / 18.78 LBS 8516 g / 83.5 N	N/A
1 mm	51.26 kg / 113.01 LBS 10 289 Gs	7.69 kg / 16.95 LBS 7689 g / 75.4 N	46.13 kg / 101.71 LBS ~0 Gs
2 mm	45.93 kg / 101.25 LBS 9 739 Gs	6.89 kg / 15.19 LBS 6889 g / 67.6 N	41.33 kg / 91.13 LBS ~0 Gs
3 mm	40.93 kg / 90.24 LBS 9 194 Gs	6.14 kg / 13.54 LBS 6140 g / 60.2 N	36.84 kg / 81.22 LBS ~0 Gs
5 mm	32.06 kg / 70.68 LBS 8 137 Gs	4.81 kg / 10.60 LBS 4809 g / 47.2 N	28.86 kg / 63.62 LBS ~0 Gs
10 mm	16.44 kg / 36.24 LBS 5 826 Gs	2.47 kg / 5.44 LBS 2465 g / 24.2 N	14.79 kg / 32.61 LBS ~0 Gs
20 mm	4.10 kg / 9.04 LBS 2 909 Gs	0.61 kg / 1.36 LBS 615 g / 6.0 N	3.69 kg / 8.13 LBS ~0 Gs
50 mm	0.15 kg / 0.34 LBS 565 Gs	0.02 kg / 0.05 LBS 23 g / 0.2 N	0.14 kg / 0.31 LBS ~0 Gs
60 mm	0.07 kg / 0.15 LBS 376 Gs	0.01 kg / 0.02 LBS 10 g / 0.1 N	0.06 kg / 0.14 LBS ~0 Gs
70 mm	0.03 kg / 0.07 LBS 262 Gs	0.00 kg / 0.01 LBS 5 g / 0.0 N	0.03 kg / 0.07 LBS ~0 Gs
80 mm	0.02 kg / 0.04 LBS 190 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.03 LBS ~0 Gs
90 mm	0.01 kg / 0.02 LBS 142 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.01 kg / 0.01 LBS 109 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 neodymium and metal combination. The connection of two magnets generates a stronger field and a larger range of performance. Planning to create a powerful holder? Use a pair of magnets instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the pinch force is huge. The levitation is a bit weaker than the attraction, but still large.
*The magnetic induction for N-N configuration is approximately ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Important: Results refer to shear force of two same neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MW 20x18 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	12.5 cm
Hearing aid	10 Gs (1.0 mT)	9.5 cm
Timepiece	20 Gs (2.0 mT)	7.5 cm
Mobile device	40 Gs (4.0 mT)	6.0 cm
Remote	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation is a large risk to IT equipment and medical implants. These magnets produce a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field penetrates the body and housings. Increased vigilance must be taken by people with cochlear implants and insulin pumps. The risk also applies to: mechanical watches, remotes, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MW 20x18 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.57 km/h (5.16 m/s)	0.56 J
30 mm	30.83 km/h (8.56 m/s)	1.56 J
50 mm	39.77 km/h (11.05 m/s)	2.59 J
100 mm	56.24 km/h (15.62 m/s)	5.18 J

Neodymium magnets are very brittle – a collision with steel causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can cause material chips or injury to fingers. Always hold the magnet during bringing near metal so it doesn't slam with momentum against the metal. A collision at high speed ends with a crack of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Coating parameters (durability)
MW 20x18 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MW 20x18 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	17 374 Mx	173.7 µWb
P_c Coefficient	0.85	High (Stable)

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

Table 11: Underwater work (magnet fishing)
MW 20x18 / N38

Environment	Effective steel pull	Effect
Air (land)	13.19 kg	Standard
Water (riverbed)	15.10 kg (+1.91 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!

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

1. Wall mount (shear)

*Caution: On a vertical wall, the magnet holds just ~20% of its max power.

2. Steel saturation

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

3. Thermal stability

*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) = 0.85

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 specification and ecology

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%

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: 010040-2026

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The presented product is an exceptionally strong rod magnet, produced from modern NdFeB material, which, at dimensions of Ø20x18 mm, guarantees maximum efficiency. The MW 20x18 / N38 component boasts an accuracy of ±0.1mm and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 13.19 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 129.35 N with a weight of only 42.41 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø20x18), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 20 mm and height 18 mm. The value of 129.35 N means that the magnet is capable of holding a weight many times exceeding its own mass of 42.41 g. The product has a [NiCuNi] coating, which protects the surface against external factors, 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 20 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 diametrically if your project requires it.

Pros as well as cons of rare earth magnets.

Benefits

Besides their remarkable pulling force, neodymium magnets offer the following advantages:

They do not lose strength, even over around ten years – the drop in lifting capacity is only ~1% (based on measurements),
Magnets effectively resist against loss of magnetization caused by foreign field sources,
The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Due to the potential of precise molding and customization to unique needs, NdFeB magnets can be produced in a broad palette of geometric configurations, which makes them more universal,
Fundamental importance in electronics industry – they are used in computer drives, drive modules, medical devices, also complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in miniature devices

Weaknesses

Disadvantages of neodymium magnets:

At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited possibility of making threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these devices are able to disrupt the diagnostic process medical after entering the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Highest magnetic holding force – what contributes to it?

The lifting capacity listed is a measurement result performed under specific, ideal conditions:

using a sheet made of low-carbon steel, acting as a ideal flux conductor
whose thickness is min. 10 mm
with an polished touching surface
without the slightest clearance between the magnet and steel
under vertical force direction (90-degree angle)
at standard ambient temperature

Determinants of lifting force in real conditions

Holding efficiency is affected by working environment parameters, mainly (from most important):

Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Material composition – not every steel attracts identically. Alloy additives worsen the attraction effect.
Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets

Protect data

Do not bring magnets close to a purse, computer, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Demagnetization risk

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its properties and strength.

Danger to the youngest

Neodymium magnets are not toys. Swallowing several magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires immediate surgery.

Threat to navigation

GPS units and mobile phones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Crushing risk

Large magnets can smash fingers in a fraction of a second. Under no circumstances place your hand between two strong magnets.

Caution required

Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Mechanical processing

Powder produced during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Material brittleness

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Allergy Warning

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

Warning for heart patients

Warning for patients: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or request help to handle the magnets.

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

MW 20x18 / N38 - cylindrical magnet

Technical of the product - MW 20x18 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - data

Table 1: Static pull force (pull vs gap) - power drop MW 20x18 / N38

Table 2: Sliding force (vertical surface) MW 20x18 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MW 20x18 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MW 20x18 / N38

Table 5: Thermal stability (stability) - resistance threshold MW 20x18 / N38

Table 6: Two magnets (attraction) - forces in the system MW 20x18 / N38

Table 7: Safety (HSE) (implants) - warnings MW 20x18 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 20x18 / N38

Table 9: Coating parameters (durability) MW 20x18 / N38

Table 10: Electrical data (Flux) MW 20x18 / N38

Table 11: Underwater work (magnet fishing) MW 20x18 / N38

1. Wall mount (shear)

2. Steel saturation

3. Thermal stability

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

Material specification

Sustainability

Pulling force

Magnetic Field

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Pros as well as cons of rare earth magnets.

Benefits

Weaknesses

Holding force characteristics

Highest magnetic holding force – what contributes to it?

Determinants of lifting force in real conditions

H&S for magnets

Protect data

Demagnetization risk

Danger to the youngest

Threat to navigation

Crushing risk

Caution required

Mechanical processing

Material brittleness

Allergy Warning

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 20x18 / N38

Table 2: Sliding force (vertical surface)
MW 20x18 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 20x18 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MW 20x18 / N38

Table 5: Thermal stability (stability) - resistance threshold
MW 20x18 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 20x18 / N38

Table 7: Safety (HSE) (implants) - warnings
MW 20x18 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 20x18 / N38

Table 9: Coating parameters (durability)
MW 20x18 / N38

Table 10: Electrical data (Flux)
MW 20x18 / N38

Table 11: Underwater work (magnet fishing)
MW 20x18 / N38