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MP 25x5x5 / 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 030193

GTIN/EAN: 5906301812104

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

17.67 g

Magnetization Direction

↑ axial

Load capacity

7.66 kg / 75.12 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

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Technical specification of the product - MP 25x5x5 / N38 - ring magnet

Specification / characteristics - MP 25x5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030193
GTIN/EAN	5906301812104
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	5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	17.67 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.66 kg / 75.12 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x5x5 / 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 assembly - data

Presented information represent the direct effect of a engineering calculation. Values rely on algorithms for the class Nd₂Fe₁₄B. Actual parameters may differ. Use these calculations as a reference point when designing systems.

Table 1: Static force (pull vs distance) - characteristics
MP 25x5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	7.66 kg / 16.89 lbs 7660.0 g / 75.1 N	medium risk
1 mm	5310 Gs 531.0 mT	6.47 kg / 14.27 lbs 6471.0 g / 63.5 N	medium risk
2 mm	4846 Gs 484.6 mT	5.39 kg / 11.88 lbs 5388.6 g / 52.9 N	medium risk
3 mm	4397 Gs 439.7 mT	4.44 kg / 9.78 lbs 4437.9 g / 43.5 N	medium risk
5 mm	3576 Gs 357.6 mT	2.93 kg / 6.47 lbs 2934.8 g / 28.8 N	medium risk
10 mm	2073 Gs 207.3 mT	0.99 kg / 2.17 lbs 985.9 g / 9.7 N	weak grip
15 mm	1231 Gs 123.1 mT	0.35 kg / 0.77 lbs 347.9 g / 3.4 N	weak grip
20 mm	773 Gs 77.3 mT	0.14 kg / 0.30 lbs 137.0 g / 1.3 N	weak grip
30 mm	356 Gs 35.6 mT	0.03 kg / 0.06 lbs 29.0 g / 0.3 N	weak grip
50 mm	115 Gs 11.5 mT	0.00 kg / 0.01 lbs 3.0 g / 0.0 N	weak grip

Grip strength weakens sharply with every mm of distance. Note that even a very thin break (e.g., dirt, varnish, dust) significantly weakens the grip. Magnets work most effectively at the point of direct contact; gap weakens the force. See how quickly the parameters drop, when the product does not adhere directly to the steel surface. When designing the mounting, avoid additional spacers.

Table 2: Sliding capacity (wall)
MP 25x5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.53 kg / 3.38 lbs 1532.0 g / 15.0 N
1 mm	Stal (~0.2)	1.29 kg / 2.85 lbs 1294.0 g / 12.7 N
2 mm	Stal (~0.2)	1.08 kg / 2.38 lbs 1078.0 g / 10.6 N
3 mm	Stal (~0.2)	0.89 kg / 1.96 lbs 888.0 g / 8.7 N
5 mm	Stal (~0.2)	0.59 kg / 1.29 lbs 586.0 g / 5.7 N
10 mm	Stal (~0.2)	0.20 kg / 0.44 lbs 198.0 g / 1.9 N
15 mm	Stal (~0.2)	0.07 kg / 0.15 lbs 70.0 g / 0.7 N
20 mm	Stal (~0.2)	0.03 kg / 0.06 lbs 28.0 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

The following data defines the estimated weight limit necessary to initiate the downward movement of the magnet downwards along a vertical steel wall (assuming typical friction coefficient). The holding force is a function of the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MP 25x5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.30 kg / 5.07 lbs 2298.0 g / 22.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.53 kg / 3.38 lbs 1532.0 g / 15.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.77 kg / 1.69 lbs 766.0 g / 7.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.83 kg / 8.44 lbs 3830.0 g / 37.6 N

When hanging a magnet on a vertical surface (e.g., a car body), it will maintain only approx. 20%-30% of its nominal power. Gravitational force and a weak degree of grip mean that products slide down easier than they pop off the substrate. Designing a hanger? Consider that the shear force is much weaker than the maximum static pull force. On a slippery surface, the holder will give way down under a significantly smaller weight. Using a rubber layer can drastically raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 25x5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.77 kg / 1.69 lbs 766.0 g / 7.5 N
1 mm	25%	1.92 kg / 4.22 lbs 1915.0 g / 18.8 N
2 mm	50%	3.83 kg / 8.44 lbs 3830.0 g / 37.6 N
3 mm	75%	5.75 kg / 12.67 lbs 5745.0 g / 56.4 N
5 mm	100%	7.66 kg / 16.89 lbs 7660.0 g / 75.1 N
10 mm	100%	7.66 kg / 16.89 lbs 7660.0 g / 75.1 N
11 mm	100%	7.66 kg / 16.89 lbs 7660.0 g / 75.1 N
12 mm	100%	7.66 kg / 16.89 lbs 7660.0 g / 75.1 N

A thin sheet is unable to absorb the full magnetic flux, which wastes potential of the magnet. If you attach a powerful product to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To squeeze 100% of this magnet's power, you require a sufficiently solid piece of steel. The saturation effect means that on thin elements (e.g., car bodies), the product holds weaker. We advise picking the steel dimension from these parameters.

Table 5: Thermal stability (material behavior) - power drop
MP 25x5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.66 kg / 16.89 lbs 7660.0 g / 75.1 N	OK
40 °C	-2.2%	7.49 kg / 16.52 lbs 7491.5 g / 73.5 N	OK
60 °C	-4.4%	7.32 kg / 16.14 lbs 7323.0 g / 71.8 N	OK
80 °C	-6.6%	7.15 kg / 15.77 lbs 7154.4 g / 70.2 N
100 °C	-28.8%	5.45 kg / 12.02 lbs 5453.9 g / 53.5 N

Ordinary NdFeB products change their properties strength after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly damage this magnet. As the temperature rises, the magnet's capacity momentarily decreases. Refrain from using this product close to heaters higher than its operating temperature limit. Too high temperature will cause irreversible degradation of magnetism.

*Important note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) may lose charge permanently sooner than long magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 25x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear 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 wider radius than a magnet and sheet combination. The connection of magnet-to-magnet produces a massive flux and a wider radius of operation. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the pinch force is huge. The repulsion force is slightly lower than the connection force, but still significant.
*Field value in repulsion mode drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
* Estimates show shear force of two matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - precautionary measures
MP 25x5x5 / 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
Mobile device	40 Gs (4.0 mT)	8.0 cm
Car key	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 and medical implants. These NdFeB products generate a flux that disrupts operation of digital equipment. Notice: the invisible magnetic field passes through tissues and glass. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, car keys, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MP 25x5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.62 km/h (6.28 m/s)	0.35 J
30 mm	36.46 km/h (10.13 m/s)	0.91 J
50 mm	46.96 km/h (13.05 m/s)	1.50 J
100 mm	66.40 km/h (18.45 m/s)	3.01 J

Neodymium magnets are very brittle – a strong collision with metal can result in shattering. Control the attraction moment – a neodymium left loose turns into a projectile. Kinetic force can cause material chips or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Anti-corrosion coating durability
MP 25x5x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MP 25x5x5 / N38

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

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
MP 25x5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.66 kg	Standard
Water (riverbed)	8.77 kg (+1.11 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.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Caution: On a vertical wall, the magnet holds merely approx. 20-30% of its perpendicular strength.

2. Steel thickness impact

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

3. Power loss vs temp

*For standard magnets, 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

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

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%

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: 030193-2026

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The ring-shaped magnet MP 25x5x5 / N38 is created for permanent mounting, where glue might fail or be insufficient. Mounting is clean and reversible, unlike gluing. This product with a force of 7.66 kg works great as a cabinet closure, speaker holder, or spacer element in devices.

This is a crucial issue when working with model MP 25x5x5 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

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. Always check that the screw head is not larger than the outer diameter of the magnet (25 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø25x5 mm and a weight of 17.67 g. The key parameter here is the lifting capacity amounting to approximately 7.66 kg (force ~75.12 N). The mounting hole diameter is precisely 5 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). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:

They have constant strength, and over around ten years their performance decreases symbolically – ~1% (according to theory),
They show high resistance to demagnetization induced by presence of other magnetic fields,
A magnet with a shiny gold surface looks better,
The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
Thanks to the ability of free shaping and customization to specialized needs, neodymium magnets can be created in a broad palette of shapes and sizes, which amplifies use scope,
Key role in future technologies – they find application in magnetic memories, motor assemblies, medical equipment, and other advanced devices.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Drawbacks and weaknesses of neodymium magnets: tips and applications.

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
We recommend a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
Possible danger to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices can be problematic in diagnostics medical when they are in the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what affects it?

Magnet power was determined for ideal contact conditions, taking into account:

using a base made of high-permeability steel, serving as a ideal flux conductor
possessing a massiveness of minimum 10 mm to ensure full flux closure
with an ideally smooth touching surface
with direct contact (no coatings)
under perpendicular force vector (90-degree angle)
in temp. approx. 20°C

Determinants of lifting force in real conditions

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

Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Direction of force – highest force is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Precautions when working with NdFeB magnets

Serious injuries

Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!

Allergy Warning

Studies show that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and select versions in plastic housing.

Fragile material

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

Fire risk

Fire hazard: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.

This is not a toy

Strictly store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are life-threatening.

Heat sensitivity

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Implant safety

Individuals with a heart stimulator should keep an absolute distance from magnets. The magnetism can stop the functioning of the life-saving device.

Threat to navigation

Note: rare earth magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and GPS.

Magnetic media

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Handling guide

Handle magnets consciously. Their powerful strength can surprise even experienced users. Stay alert and respect their force.

Attention! Looking for details? Check our post: Are neodymium magnets dangerous?

MP 25x5x5 / N38 - ring magnet

Technical specification of the product - MP 25x5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - data

Table 1: Static force (pull vs distance) - characteristics MP 25x5x5 / N38

Table 2: Sliding capacity (wall) MP 25x5x5 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 25x5x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MP 25x5x5 / N38

Table 5: Thermal stability (material behavior) - power drop MP 25x5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MP 25x5x5 / N38

Table 7: Protective zones (implants) - precautionary measures MP 25x5x5 / N38

Table 8: Collisions (kinetic energy) - collision effects MP 25x5x5 / N38

Table 9: Anti-corrosion coating durability MP 25x5x5 / N38

Table 10: Construction data (Pc) MP 25x5x5 / N38

Table 11: Physics of underwater searching MP 25x5x5 / N38

1. Vertical hold

2. Steel thickness impact

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what affects it?

Determinants of lifting force in real conditions

Precautions when working with NdFeB magnets

Serious injuries

Allergy Warning

Fragile material

Fire risk

This is not a toy

Heat sensitivity

Implant safety

Threat to navigation

Magnetic media

Handling guide

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MP 25x5x5 / N38

Table 2: Sliding capacity (wall)
MP 25x5x5 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 25x5x5 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MP 25x5x5 / N38

Table 5: Thermal stability (material behavior) - power drop
MP 25x5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 25x5x5 / N38

Table 7: Protective zones (implants) - precautionary measures
MP 25x5x5 / N38

Table 8: Collisions (kinetic energy) - collision effects
MP 25x5x5 / N38

Table 9: Anti-corrosion coating durability
MP 25x5x5 / N38

Table 10: Construction data (P_c)
MP 25x5x5 / N38

Table 11: Physics of underwater searching
MP 25x5x5 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.