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MP 25x8x20 / N38 - ring 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

ring magnet

Catalog no 030450

GTIN/EAN: 5906301812340

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

8 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

66.09 g

Magnetization Direction

↑ axial

Load capacity

19.02 kg / 186.54 N

Magnetic Induction

525.50 mT / 5255 Gs

Coating

[NiCuNi] Nickel

check parameters »

41.71 ZŁ with VAT / pcs + price for transport

33.91 ZŁ net + 23% VAT / pcs

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Technical of the product - MP 25x8x20 / N38 - ring magnet

Specification / characteristics - MP 25x8x20 / N38 - ring magnet

properties

properties	values
Cat. no.	030450
GTIN/EAN	5906301812340
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	25 mm [±0,1 mm]
internal diameter Ø	8 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	66.09 g
Magnetization Direction	↑ axial
Load capacity ~ ?	19.02 kg / 186.54 N
Magnetic Induction ~ ?	525.50 mT / 5255 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x8x20 / N38 - ring 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

Engineering analysis of the magnet - technical parameters

The following data are the direct effect of a physical simulation. Values rely on models for the class Nd₂Fe₁₄B. Real-world parameters may differ. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (pull vs distance) - interaction chart
MP 25x8x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	19.02 kg / 41.93 LBS 19020.0 g / 186.6 N	dangerous!
1 mm	5310 Gs 531.0 mT	16.07 kg / 35.42 LBS 16067.7 g / 157.6 N	dangerous!
2 mm	4846 Gs 484.6 mT	13.38 kg / 29.50 LBS 13380.1 g / 131.3 N	dangerous!
3 mm	4397 Gs 439.7 mT	11.02 kg / 24.29 LBS 11019.3 g / 108.1 N	dangerous!
5 mm	3576 Gs 357.6 mT	7.29 kg / 16.07 LBS 7287.1 g / 71.5 N	strong
10 mm	2073 Gs 207.3 mT	2.45 kg / 5.40 LBS 2448.1 g / 24.0 N	strong
15 mm	1231 Gs 123.1 mT	0.86 kg / 1.90 LBS 863.8 g / 8.5 N	weak grip
20 mm	773 Gs 77.3 mT	0.34 kg / 0.75 LBS 340.1 g / 3.3 N	weak grip
30 mm	356 Gs 35.6 mT	0.07 kg / 0.16 LBS 72.1 g / 0.7 N	weak grip
50 mm	115 Gs 11.5 mT	0.01 kg / 0.02 LBS 7.5 g / 0.1 N	weak grip

Grip strength weakens significantly per each millimeter of gap. Note that even a microscopic distance (e.g., dirt, paint, rust) noticeably weakens the grip. Magnets hold optimally during direct contact; air break nullifies the power. Observe how flashily the parameters plummet, when the product does not touch tightly to the metal substrate. When calculating the assembly, eliminate unnecessary gaps.

Table 2: Sliding capacity (wall)
MP 25x8x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.80 kg / 8.39 LBS 3804.0 g / 37.3 N
1 mm	Stal (~0.2)	3.21 kg / 7.09 LBS 3214.0 g / 31.5 N
2 mm	Stal (~0.2)	2.68 kg / 5.90 LBS 2676.0 g / 26.3 N
3 mm	Stal (~0.2)	2.20 kg / 4.86 LBS 2204.0 g / 21.6 N
5 mm	Stal (~0.2)	1.46 kg / 3.21 LBS 1458.0 g / 14.3 N
10 mm	Stal (~0.2)	0.49 kg / 1.08 LBS 490.0 g / 4.8 N
15 mm	Stal (~0.2)	0.17 kg / 0.38 LBS 172.0 g / 1.7 N
20 mm	Stal (~0.2)	0.07 kg / 0.15 LBS 68.0 g / 0.7 N
30 mm	Stal (~0.2)	0.01 kg / 0.03 LBS 14.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The table below indicates the approximate force sufficient to initiate the sliding of the magnet down against a upright steel plate (assuming typical friction coefficient). The holding force varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 25x8x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.71 kg / 12.58 LBS 5706.0 g / 56.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.80 kg / 8.39 LBS 3804.0 g / 37.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.90 kg / 4.19 LBS 1902.0 g / 18.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.51 kg / 20.97 LBS 9510.0 g / 93.3 N

When mounting a magnet on a vertical wall (e.g., a car body), it will only hold barely about 20%-30% of its nominal power. Gravitational force and a weak degree of grip influence the fact that products slip faster than they pop off the substrate. Designing a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the holder will give way down under a significantly smaller weight. Utilizing a rubberized coating can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 25x8x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.95 kg / 2.10 LBS 951.0 g / 9.3 N
1 mm	13%	2.38 kg / 5.24 LBS 2377.5 g / 23.3 N
2 mm	25%	4.76 kg / 10.48 LBS 4755.0 g / 46.6 N
3 mm	38%	7.13 kg / 15.72 LBS 7132.5 g / 70.0 N
5 mm	63%	11.89 kg / 26.21 LBS 11887.5 g / 116.6 N
10 mm	100%	19.02 kg / 41.93 LBS 19020.0 g / 186.6 N
11 mm	100%	19.02 kg / 41.93 LBS 19020.0 g / 186.6 N
12 mm	100%	19.02 kg / 41.93 LBS 19020.0 g / 186.6 N

A thin metal plate is incapable of absorb the full magnetic flux, which weakens actual performance of the magnet. If you install a neodymium to a weak sheet, the flux will penetrate right through and the holding will be smaller. To squeeze full efficiency of this magnet's potential, you require a sufficiently solid backing of steel. The material oversaturation causes that on delicate walls (e.g., appliance housings), the magnet works worse. We suggest choosing the steel cross-section according to the table below.

Table 5: Working in heat (stability) - thermal limit
MP 25x8x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	19.02 kg / 41.93 LBS 19020.0 g / 186.6 N	OK
40 °C	-2.2%	18.60 kg / 41.01 LBS 18601.6 g / 182.5 N	OK
60 °C	-4.4%	18.18 kg / 40.09 LBS 18183.1 g / 178.4 N	OK
80 °C	-6.6%	17.76 kg / 39.16 LBS 17764.7 g / 174.3 N
100 °C	-28.8%	13.54 kg / 29.86 LBS 13542.2 g / 132.8 N

Classic neodymiums lose strength after exceeding the maximum temperature. Watch out for overheating – high temperature can permanently destroy this magnet. With increasing heat, the magnet's force briefly lowers. Avoid using this product in hot environments exceeding its safe range. Too high temperature will result in permanent loss of magnetism.

*Important note: Temperature resistance is determined by both grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) may lose charge permanently sooner than long magnets. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 25x8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	30.91 kg / 68.14 LBS 6 082 Gs	4.64 kg / 10.22 LBS 4636 g / 45.5 N	N/A
1 mm	28.48 kg / 62.79 LBS 11 091 Gs	4.27 kg / 9.42 LBS 4272 g / 41.9 N	25.63 kg / 56.51 LBS ~0 Gs
2 mm	26.11 kg / 57.57 LBS 10 620 Gs	3.92 kg / 8.63 LBS 3917 g / 38.4 N	23.50 kg / 51.81 LBS ~0 Gs
3 mm	23.86 kg / 52.61 LBS 10 153 Gs	3.58 kg / 7.89 LBS 3580 g / 35.1 N	21.48 kg / 47.35 LBS ~0 Gs
5 mm	19.76 kg / 43.56 LBS 9 238 Gs	2.96 kg / 6.53 LBS 2964 g / 29.1 N	17.78 kg / 39.20 LBS ~0 Gs
10 mm	11.84 kg / 26.11 LBS 7 152 Gs	1.78 kg / 3.92 LBS 1776 g / 17.4 N	10.66 kg / 23.50 LBS ~0 Gs
20 mm	3.98 kg / 8.77 LBS 4 145 Gs	0.60 kg / 1.32 LBS 597 g / 5.9 N	3.58 kg / 7.89 LBS ~0 Gs
50 mm	0.24 kg / 0.54 LBS 1 024 Gs	0.04 kg / 0.08 LBS 36 g / 0.4 N	0.22 kg / 0.48 LBS ~0 Gs
60 mm	0.12 kg / 0.26 LBS 712 Gs	0.02 kg / 0.04 LBS 18 g / 0.2 N	0.11 kg / 0.23 LBS ~0 Gs
70 mm	0.06 kg / 0.13 LBS 514 Gs	0.01 kg / 0.02 LBS 9 g / 0.1 N	0.06 kg / 0.12 LBS ~0 Gs
80 mm	0.03 kg / 0.07 LBS 383 Gs	0.01 kg / 0.01 LBS 5 g / 0.1 N	0.03 kg / 0.07 LBS ~0 Gs
90 mm	0.02 kg / 0.04 LBS 293 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
100 mm	0.01 kg / 0.03 LBS 230 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs

Two strong neodymiums attract each other from a much further distance than a magnet and steel combination. The setup of two magnets generates a stronger field and a wider radius of operation. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a striker plate. Exercise caution that when connecting a pair of magnets, the pinch force is massive. The levitation is marginally weaker than the connection force, but still significant.
*Field value for N-N configuration reaches ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Attention: Calculations demonstrate sliding force of two same magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MP 25x8x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	17.0 cm
Hearing aid	10 Gs (1.0 mT)	13.5 cm
Mechanical watch	20 Gs (2.0 mT)	10.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	8.0 cm
Remote	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

A strong magnetic field is a large risk to electronic devices as well as pacemakers. These NdFeB products generate a field that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field passes through tissues and housings. Increased vigilance must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MP 25x8x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.43 km/h (5.12 m/s)	0.87 J
30 mm	29.70 km/h (8.25 m/s)	2.25 J
50 mm	38.27 km/h (10.63 m/s)	3.73 J
100 mm	54.10 km/h (15.03 m/s)	7.46 J

Magnetic elements are prone to chipping – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely turns into a projectile. Striking energy can destroy the magnet or dangerous crushing to fingers. Hold the magnet firmly during installation so it doesn't hit violently against the steel surface. A collision at high speed ends with a crack of the magnet. Wear eye protection when handling with large magnets.

Table 9: Anti-corrosion coating durability
MP 25x8x20 / 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)
MP 25x8x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	10 108 Mx	101.1 µWb
P_c Coefficient	1.25	High (Stable)

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 25x8x20 / N38

Environment	Effective steel pull	Effect
Air (land)	19.02 kg	Standard
Water (riverbed)	21.78 kg (+2.76 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.

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains just a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.25

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

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%

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: 030450-2026

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It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 25x8x20 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. One turn too many can destroy the magnet, so do it slowly. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. If you must use it outside, paint it with anti-corrosion paint after mounting.

The inner hole diameter determines the maximum size of the mounting element. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Aesthetic mounting requires selecting the appropriate head size.

It is a magnetic ring with a diameter of 25 mm and thickness 20 mm. The pulling force of this model is an impressive 19.02 kg, which translates to 186.54 N in newtons. The mounting hole diameter is precisely 8 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros and cons of neodymium magnets.

Strengths

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:

They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
Magnets perfectly protect themselves against loss of magnetization caused by foreign field sources,
The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
They are known for high magnetic induction at the operating surface, which improves attraction properties,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Possibility of custom modeling as well as modifying to complex needs,
Versatile presence in high-tech industry – they are used in mass storage devices, drive modules, medical equipment, also modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in miniature devices

Cons

Drawbacks and weaknesses of neodymium magnets: application proposals

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
We recommend casing - magnetic holder, due to difficulties in creating threads inside the magnet and complex shapes.
Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Pull force analysis

Best holding force of the magnet in ideal parameters – what it depends on?

The declared magnet strength represents the maximum value, measured under ideal test conditions, namely:

on a base made of mild steel, optimally conducting the magnetic field
with a cross-section of at least 10 mm
characterized by lack of roughness
under conditions of no distance (surface-to-surface)
for force acting at a right angle (pull-off, not shear)
in neutral thermal conditions

Practical lifting capacity: influencing factors

In real-world applications, the actual holding force results from many variables, ranked from most significant:

Air gap (betwixt the magnet and the metal), as even a very small distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or debris).
Direction of force – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Material type – the best choice is pure iron steel. Hardened steels may attract less.
Surface structure – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity was measured using a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a small distance between the magnet and the plate lowers the load capacity.

Precautions when working with NdFeB magnets

Choking Hazard

Absolutely keep magnets away from children. Ingestion danger is high, and the effects of magnets connecting inside the body are very dangerous.

Sensitization to coating

Some people suffer from a sensitization to Ni, which is the standard coating for neodymium magnets. Frequent touching can result in dermatitis. We strongly advise use safety gloves.

Medical implants

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Impact on smartphones

A strong magnetic field interferes with the operation of compasses in phones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Permanent damage

Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.

Finger safety

Danger of trauma: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.

Combustion hazard

Drilling and cutting of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Safe operation

Be careful. Neodymium magnets act from a distance and connect with huge force, often quicker than you can react.

Magnet fragility

Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Cards and drives

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.

Safety First! Want to know more? Check our post: Are neodymium magnets dangerous?

MP 25x8x20 / N38 - ring magnet

Technical of the product - MP 25x8x20 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - technical parameters

Table 1: Static force (pull vs distance) - interaction chart MP 25x8x20 / N38

Table 2: Sliding capacity (wall) MP 25x8x20 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 25x8x20 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MP 25x8x20 / N38

Table 5: Working in heat (stability) - thermal limit MP 25x8x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MP 25x8x20 / N38

Table 7: Hazards (implants) - precautionary measures MP 25x8x20 / N38

Table 8: Collisions (kinetic energy) - collision effects MP 25x8x20 / N38

Table 9: Anti-corrosion coating durability MP 25x8x20 / N38

Table 10: Electrical data (Flux) MP 25x8x20 / N38

Table 11: Hydrostatics and buoyancy MP 25x8x20 / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Temperature resistance

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

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

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Pros and cons of neodymium magnets.

Strengths

Cons

Pull force analysis

Best holding force of the magnet in ideal parameters – what it depends on?

Practical lifting capacity: influencing factors

Precautions when working with NdFeB magnets

Choking Hazard

Sensitization to coating

Medical implants

Impact on smartphones

Permanent damage

Finger safety

Combustion hazard

Safe operation

Magnet fragility

Cards and drives

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - interaction chart
MP 25x8x20 / N38

Table 2: Sliding capacity (wall)
MP 25x8x20 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 25x8x20 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 25x8x20 / N38

Table 5: Working in heat (stability) - thermal limit
MP 25x8x20 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 25x8x20 / N38

Table 7: Hazards (implants) - precautionary measures
MP 25x8x20 / N38

Table 8: Collisions (kinetic energy) - collision effects
MP 25x8x20 / N38

Table 9: Anti-corrosion coating durability
MP 25x8x20 / N38

Table 10: Electrical data (Flux)
MP 25x8x20 / N38

Table 11: Hydrostatics and buoyancy
MP 25x8x20 / N38