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MP 25x8x5 / N38 - ring magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

ring magnet

Catalog no 030196

GTIN/EAN: 5906301812135

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

8 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

16.52 g

Magnetization Direction

↑ axial

Load capacity

7.16 kg / 70.21 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

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Technical - MP 25x8x5 / N38 - ring magnet

Specification / characteristics - MP 25x8x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030196
GTIN/EAN	5906301812135
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	5 mm [±0,1 mm]
Weight	16.52 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.16 kg / 70.21 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x8x5 / 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

Physical simulation of the magnet - technical parameters

These values represent the outcome of a engineering simulation. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world conditions might slightly differ from theoretical values. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static force (force vs distance) - power drop
MP 25x8x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	7.16 kg / 15.79 lbs 7160.0 g / 70.2 N	warning
1 mm	5310 Gs 531.0 mT	6.05 kg / 13.33 lbs 6048.6 g / 59.3 N	warning
2 mm	4846 Gs 484.6 mT	5.04 kg / 11.10 lbs 5036.9 g / 49.4 N	warning
3 mm	4397 Gs 439.7 mT	4.15 kg / 9.15 lbs 4148.2 g / 40.7 N	warning
5 mm	3576 Gs 357.6 mT	2.74 kg / 6.05 lbs 2743.2 g / 26.9 N	warning
10 mm	2073 Gs 207.3 mT	0.92 kg / 2.03 lbs 921.6 g / 9.0 N	weak grip
15 mm	1231 Gs 123.1 mT	0.33 kg / 0.72 lbs 325.2 g / 3.2 N	weak grip
20 mm	773 Gs 77.3 mT	0.13 kg / 0.28 lbs 128.0 g / 1.3 N	weak grip
30 mm	356 Gs 35.6 mT	0.03 kg / 0.06 lbs 27.2 g / 0.3 N	weak grip
50 mm	115 Gs 11.5 mT	0.00 kg / 0.01 lbs 2.8 g / 0.0 N	weak grip

Pulling power weakens drastically with every mm of distance. Note that even a microscopic distance (e.g., dirt, varnish, dust) strongly weakens the grip. Magnets operate most effectively in perfect adhesion; air break nullifies the power. Observe how quickly the load capacity fall, when the product does not touch flatly to the steel surface. When planning the mounting, eliminate redundant distances.

Table 2: Shear hold (vertical surface)
MP 25x8x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.43 kg / 3.16 lbs 1432.0 g / 14.0 N
1 mm	Stal (~0.2)	1.21 kg / 2.67 lbs 1210.0 g / 11.9 N
2 mm	Stal (~0.2)	1.01 kg / 2.22 lbs 1008.0 g / 9.9 N
3 mm	Stal (~0.2)	0.83 kg / 1.83 lbs 830.0 g / 8.1 N
5 mm	Stal (~0.2)	0.55 kg / 1.21 lbs 548.0 g / 5.4 N
10 mm	Stal (~0.2)	0.18 kg / 0.41 lbs 184.0 g / 1.8 N
15 mm	Stal (~0.2)	0.07 kg / 0.15 lbs 66.0 g / 0.6 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 26.0 g / 0.3 N
30 mm	Stal (~0.2)	0.01 kg / 0.01 lbs 6.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

This section indicates the approximate holding capacity needed to start the slippage of the magnet downwards against a upright steel wall (considering typical friction). The holding force is a function of the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 25x8x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.15 kg / 4.74 lbs 2148.0 g / 21.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.43 kg / 3.16 lbs 1432.0 g / 14.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.72 kg / 1.58 lbs 716.0 g / 7.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.58 kg / 7.89 lbs 3580.0 g / 35.1 N

When hanging a element on a vertical plane (e.g., a fridge), it you can count on only about 20%-30% of its nominal power. Gravity and a low friction coefficient cause that products 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 smooth steel, the holder will slip down under a much lighter weight. Using a rubber pad can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MP 25x8x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.72 kg / 1.58 lbs 716.0 g / 7.0 N
1 mm	25%	1.79 kg / 3.95 lbs 1790.0 g / 17.6 N
2 mm	50%	3.58 kg / 7.89 lbs 3580.0 g / 35.1 N
3 mm	75%	5.37 kg / 11.84 lbs 5370.0 g / 52.7 N
5 mm	100%	7.16 kg / 15.79 lbs 7160.0 g / 70.2 N
10 mm	100%	7.16 kg / 15.79 lbs 7160.0 g / 70.2 N
11 mm	100%	7.16 kg / 15.79 lbs 7160.0 g / 70.2 N
12 mm	100%	7.16 kg / 15.79 lbs 7160.0 g / 70.2 N

A too thin steel is unable to absorb the entire magnetic field, which squanders power of the magnet. Should you attach a powerful product to a weak sheet, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze 100% of this magnet's potential, you need a suitably thick element of steel. The saturation effect means that on sheet metal structures (e.g., appliance housings), the magnet holds weaker. We advise picking the steel thickness according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
MP 25x8x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.16 kg / 15.79 lbs 7160.0 g / 70.2 N	OK
40 °C	-2.2%	7.00 kg / 15.44 lbs 7002.5 g / 68.7 N	OK
60 °C	-4.4%	6.84 kg / 15.09 lbs 6845.0 g / 67.1 N	OK
80 °C	-6.6%	6.69 kg / 14.74 lbs 6687.4 g / 65.6 N
100 °C	-28.8%	5.10 kg / 11.24 lbs 5097.9 g / 50.0 N

Classic neodymiums lose power after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly destroy this magnet. As the temperature rises, the magnet's capacity temporarily lowers. Avoid using this product close to heaters exceeding its safe range. Too high temperature will cause permanent loss of magnetism.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures compared to rod magnets. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 25x8x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	82.42 kg / 181.72 lbs 6 082 Gs	12.36 kg / 27.26 lbs 12364 g / 121.3 N	N/A
1 mm	75.95 kg / 167.44 lbs 11 091 Gs	11.39 kg / 25.12 lbs 11392 g / 111.8 N	68.35 kg / 150.69 lbs ~0 Gs
2 mm	69.63 kg / 153.51 lbs 10 620 Gs	10.44 kg / 23.03 lbs 10445 g / 102.5 N	62.67 kg / 138.16 lbs ~0 Gs
3 mm	63.64 kg / 140.29 lbs 10 153 Gs	9.55 kg / 21.04 lbs 9545 g / 93.6 N	57.27 kg / 126.26 lbs ~0 Gs
5 mm	52.69 kg / 116.16 lbs 9 238 Gs	7.90 kg / 17.42 lbs 7903 g / 77.5 N	47.42 kg / 104.54 lbs ~0 Gs
10 mm	31.58 kg / 69.62 lbs 7 152 Gs	4.74 kg / 10.44 lbs 4737 g / 46.5 N	28.42 kg / 62.66 lbs ~0 Gs
20 mm	10.61 kg / 23.39 lbs 4 145 Gs	1.59 kg / 3.51 lbs 1591 g / 15.6 N	9.55 kg / 21.05 lbs ~0 Gs
50 mm	0.65 kg / 1.43 lbs 1 024 Gs	0.10 kg / 0.21 lbs 97 g / 1.0 N	0.58 kg / 1.28 lbs ~0 Gs
60 mm	0.31 kg / 0.69 lbs 712 Gs	0.05 kg / 0.10 lbs 47 g / 0.5 N	0.28 kg / 0.62 lbs ~0 Gs
70 mm	0.16 kg / 0.36 lbs 514 Gs	0.02 kg / 0.05 lbs 24 g / 0.2 N	0.15 kg / 0.32 lbs ~0 Gs
80 mm	0.09 kg / 0.20 lbs 383 Gs	0.01 kg / 0.03 lbs 14 g / 0.1 N	0.08 kg / 0.18 lbs ~0 Gs
90 mm	0.05 kg / 0.12 lbs 293 Gs	0.01 kg / 0.02 lbs 8 g / 0.1 N	0.05 kg / 0.11 lbs ~0 Gs
100 mm	0.03 kg / 0.07 lbs 230 Gs	0.00 kg / 0.01 lbs 5 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a magnet and sheet setup. The connection of two magnets produces a massive flux and a further horizon of performance. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still impressive.
*Flux density for N-N configuration is approximately ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
* Calculations apply to friction force of two identical magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MP 25x8x5 / 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
Timepiece	20 Gs (2.0 mT)	10.5 cm
Mobile device	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

Powerful magnet radiation is a serious hazard to electronics and pacemakers. These magnets produce a flux that disrupts operation of digital equipment. Remember: the invisible magnetic field penetrates the body and plastic. Special caution must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MP 25x8x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.62 km/h (6.28 m/s)	0.33 J
30 mm	36.45 km/h (10.13 m/s)	0.85 J
50 mm	46.96 km/h (13.04 m/s)	1.41 J
100 mm	66.40 km/h (18.44 m/s)	2.81 J

Neodymium magnets are delicate – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or painful pinches to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A collision at high speed ends with a crack of the magnet. Use safety goggles when playing with large magnets.

Table 9: Coating parameters (durability)
MP 25x8x5 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MP 25x8x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	24 536 Mx	245.4 µWb
P_c Coefficient	1.03	High (Stable)

Flux value passing through the magnet pole. Key data for generator designers as well as sensors. P_c value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 25x8x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.16 kg	Standard
Water (riverbed)	8.20 kg (+1.04 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Caution: On a vertical surface, the magnet retains only a fraction of its max power.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) drastically limits the holding force.

3. Power loss vs temp

*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) = 1.03

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

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Ecology and recycling (GPSR)

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 030196-2026

Measurement Calculator

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Force in kg

Newtons (N)

lbs

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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. Mounting is clean and reversible, unlike gluing. 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 25x8x5 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a flexible washer under the screw head, which will cushion the stresses. 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 easily scratched 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.

This model is characterized by dimensions Ø25x5 mm and a weight of 16.52 g. The pulling force of this model is an impressive 7.16 kg, which translates to 70.21 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 8 mm.

The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Benefits

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

They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
They possess excellent resistance to magnetic field loss due to opposing magnetic fields,
By applying a reflective coating of nickel, the element has an proper look,
The surface of neodymium magnets generates a strong magnetic field – this is a key feature,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to flexibility in forming and the capacity to adapt to unusual requirements,
Key role in innovative solutions – they are used in data components, drive modules, diagnostic systems, as well as complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Problematic aspects of neodymium magnets: application proposals

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited possibility of producing threads in the magnet and complex forms - recommended is cover - magnetic holder.
Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical in case of swallowing.
Due to complex production process, their price is higher than average,

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

The specified lifting capacity refers to the peak performance, measured under laboratory conditions, namely:

with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
whose thickness is min. 10 mm
with an ground touching surface
without any air gap between the magnet and steel
for force applied at a right angle (in the magnet axis)
at room temperature

Practical lifting capacity: influencing factors

Please note that the application force may be lower influenced by the following factors, starting with the most relevant:

Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Steel type – mild steel attracts best. Higher carbon content reduce magnetic properties and holding force.
Smoothness – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under shearing force the holding force is lower. Additionally, even a slight gap between the magnet and the plate reduces the lifting capacity.

Warnings

Eye protection

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them breaking into small pieces.

Crushing force

Big blocks can crush fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Nickel coating and allergies

Medical facts indicate that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or choose versions in plastic housing.

Dust is flammable

Dust produced during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Magnetic media

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

Heat warning

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.

Implant safety

People with a pacemaker have to keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Immense force

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

Choking Hazard

Strictly store magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are fatal.

GPS and phone interference

Be aware: rare earth magnets produce a field that interferes with sensitive sensors. Maintain a separation from your phone, tablet, and navigation systems.

Caution! Details about risks in the article: Magnet Safety Guide.

MP 25x8x5 / N38 - ring magnet

Technical - MP 25x8x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - technical parameters

Table 1: Static force (force vs distance) - power drop MP 25x8x5 / N38

Table 2: Shear hold (vertical surface) MP 25x8x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MP 25x8x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 25x8x5 / N38

Table 5: Working in heat (material behavior) - thermal limit MP 25x8x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MP 25x8x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MP 25x8x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects MP 25x8x5 / N38

Table 9: Coating parameters (durability) MP 25x8x5 / N38

Table 10: Electrical data (Flux) MP 25x8x5 / N38

Table 11: Hydrostatics and buoyancy MP 25x8x5 / N38

1. Shear force

2. Steel thickness impact

3. Power loss vs temp

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

Chemical composition

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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Pros as well as cons of Nd2Fe14B magnets.

Benefits

Disadvantages

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Practical lifting capacity: influencing factors

Warnings

Eye protection

Crushing force

Nickel coating and allergies

Dust is flammable

Magnetic media

Heat warning

Implant safety

Immense force

Choking Hazard

GPS and phone interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - power drop
MP 25x8x5 / N38

Table 2: Shear hold (vertical surface)
MP 25x8x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 25x8x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 25x8x5 / N38

Table 5: Working in heat (material behavior) - thermal limit
MP 25x8x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 25x8x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MP 25x8x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MP 25x8x5 / N38

Table 9: Coating parameters (durability)
MP 25x8x5 / N38

Table 10: Electrical data (Flux)
MP 25x8x5 / N38

Table 11: Hydrostatics and buoyancy
MP 25x8x5 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.