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MP 25x12.5x5 / 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 030342

GTIN/EAN: 5906301812289

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

12.5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

13.81 g

Magnetization Direction

↑ axial

Load capacity

5.98 kg / 58.64 N

Magnetic Induction

230.20 mT / 2302 Gs

Coating

[NiCuNi] Nickel

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Technical of the product - MP 25x12.5x5 / N38 - ring magnet

Specification / characteristics - MP 25x12.5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030342
GTIN/EAN	5906301812289
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	12.5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	13.81 g
Magnetization Direction	↑ axial
Load capacity ~ ?	5.98 kg / 58.64 N
Magnetic Induction ~ ?	230.20 mT / 2302 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x12.5x5 / 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 analysis of the magnet - technical parameters

Presented information are the result of a mathematical analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Actual parameters may deviate from the simulation results. Please consider these calculations as a reference point during assembly planning.

Table 1: Static force (pull vs gap) - interaction chart
MP 25x12.5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	5.98 kg / 13.18 pounds 5980.0 g / 58.7 N	strong
1 mm	5310 Gs 531.0 mT	5.05 kg / 11.14 pounds 5051.8 g / 49.6 N	strong
2 mm	4846 Gs 484.6 mT	4.21 kg / 9.27 pounds 4206.8 g / 41.3 N	strong
3 mm	4397 Gs 439.7 mT	3.46 kg / 7.64 pounds 3464.5 g / 34.0 N	strong
5 mm	3576 Gs 357.6 mT	2.29 kg / 5.05 pounds 2291.1 g / 22.5 N	strong
10 mm	2073 Gs 207.3 mT	0.77 kg / 1.70 pounds 769.7 g / 7.6 N	low risk
15 mm	1231 Gs 123.1 mT	0.27 kg / 0.60 pounds 271.6 g / 2.7 N	low risk
20 mm	773 Gs 77.3 mT	0.11 kg / 0.24 pounds 106.9 g / 1.0 N	low risk
30 mm	356 Gs 35.6 mT	0.02 kg / 0.05 pounds 22.7 g / 0.2 N	low risk
50 mm	115 Gs 11.5 mT	0.00 kg / 0.01 pounds 2.4 g / 0.0 N	low risk

Grip strength decreases sharply per each millimeter of gap. Keep in mind that every additional insulation layer (e.g., contamination, paint, veneer) strongly diminishes the holding power. Neodymiums operate most effectively during direct contact; air break nullifies the force. Notice how rapidly the load capacity plummet, when the magnet does not touch directly to the metal substrate. When planning the assembly, discard additional spacers.

Table 2: Sliding capacity (vertical surface)
MP 25x12.5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.20 kg / 2.64 pounds 1196.0 g / 11.7 N
1 mm	Stal (~0.2)	1.01 kg / 2.23 pounds 1010.0 g / 9.9 N
2 mm	Stal (~0.2)	0.84 kg / 1.86 pounds 842.0 g / 8.3 N
3 mm	Stal (~0.2)	0.69 kg / 1.53 pounds 692.0 g / 6.8 N
5 mm	Stal (~0.2)	0.46 kg / 1.01 pounds 458.0 g / 4.5 N
10 mm	Stal (~0.2)	0.15 kg / 0.34 pounds 154.0 g / 1.5 N
15 mm	Stal (~0.2)	0.05 kg / 0.12 pounds 54.0 g / 0.5 N
20 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data indicates the estimated shear load sufficient to cause the slippage of the magnet vertically against a upright metal surface (considering typical friction coefficient). The holding force is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MP 25x12.5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.79 kg / 3.96 pounds 1794.0 g / 17.6 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.20 kg / 2.64 pounds 1196.0 g / 11.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.60 kg / 1.32 pounds 598.0 g / 5.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.99 kg / 6.59 pounds 2990.0 g / 29.3 N

When placing a element on a vertical plane (e.g., a board), it will only hold only approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip influence the fact that products slide down easier than they pull off. Designing a wall mount? Note that the shear force is noticeably lower than the maximum static pull force. On a painted metal, the magnet will slip down under a noticeably lighter cargo. Using a rubber coating can significantly raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MP 25x12.5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.60 kg / 1.32 pounds 598.0 g / 5.9 N
1 mm	25%	1.50 kg / 3.30 pounds 1495.0 g / 14.7 N
2 mm	50%	2.99 kg / 6.59 pounds 2990.0 g / 29.3 N
3 mm	75%	4.49 kg / 9.89 pounds 4485.0 g / 44.0 N
5 mm	100%	5.98 kg / 13.18 pounds 5980.0 g / 58.7 N
10 mm	100%	5.98 kg / 13.18 pounds 5980.0 g / 58.7 N
11 mm	100%	5.98 kg / 13.18 pounds 5980.0 g / 58.7 N
12 mm	100%	5.98 kg / 13.18 pounds 5980.0 g / 58.7 N

A too thin steel is unable to conduct the entire magnetic field, which wastes potential of the holder. If you mount a strong magnet to a too thin substrate, the flux will penetrate right through and the pull force will drop sharply. To achieve the maximum of this magnet's power, you need a suitably thick element of metal. The saturation effect means that on sheet metal structures (e.g., car bodies), the magnet works worse. We suggest choosing the steel thickness according to the table below.

Table 5: Thermal stability (stability) - resistance threshold
MP 25x12.5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	5.98 kg / 13.18 pounds 5980.0 g / 58.7 N	OK
40 °C	-2.2%	5.85 kg / 12.89 pounds 5848.4 g / 57.4 N	OK
60 °C	-4.4%	5.72 kg / 12.60 pounds 5716.9 g / 56.1 N	OK
80 °C	-6.6%	5.59 kg / 12.31 pounds 5585.3 g / 54.8 N
100 °C	-28.8%	4.26 kg / 9.39 pounds 4257.8 g / 41.8 N

Classic neodymiums lose parameters after exceeding the maximum temperature. Protect against heat – heat can irreversibly damage this magnet. As the temperature rises, the neodymium's power momentarily decreases. Refrain from using this magnet in hot environments higher than its safe range. Ignoring the limit will cause destruction of magnetic properties.

*Important note: Thermal stability is determined by both grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field collision
MP 25x12.5x5 / 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 pounds 6 082 Gs	12.36 kg / 27.26 pounds 12364 g / 121.3 N	N/A
1 mm	75.95 kg / 167.44 pounds 11 091 Gs	11.39 kg / 25.12 pounds 11392 g / 111.8 N	68.35 kg / 150.69 pounds ~0 Gs
2 mm	69.63 kg / 153.51 pounds 10 620 Gs	10.44 kg / 23.03 pounds 10445 g / 102.5 N	62.67 kg / 138.16 pounds ~0 Gs
3 mm	63.64 kg / 140.29 pounds 10 153 Gs	9.55 kg / 21.04 pounds 9545 g / 93.6 N	57.27 kg / 126.26 pounds ~0 Gs
5 mm	52.69 kg / 116.16 pounds 9 238 Gs	7.90 kg / 17.42 pounds 7903 g / 77.5 N	47.42 kg / 104.54 pounds ~0 Gs
10 mm	31.58 kg / 69.62 pounds 7 152 Gs	4.74 kg / 10.44 pounds 4737 g / 46.5 N	28.42 kg / 62.66 pounds ~0 Gs
20 mm	10.61 kg / 23.39 pounds 4 145 Gs	1.59 kg / 3.51 pounds 1591 g / 15.6 N	9.55 kg / 21.05 pounds ~0 Gs
50 mm	0.65 kg / 1.43 pounds 1 024 Gs	0.10 kg / 0.21 pounds 97 g / 1.0 N	0.58 kg / 1.28 pounds ~0 Gs
60 mm	0.31 kg / 0.69 pounds 712 Gs	0.05 kg / 0.10 pounds 47 g / 0.5 N	0.28 kg / 0.62 pounds ~0 Gs
70 mm	0.16 kg / 0.36 pounds 514 Gs	0.02 kg / 0.05 pounds 24 g / 0.2 N	0.15 kg / 0.32 pounds ~0 Gs
80 mm	0.09 kg / 0.20 pounds 383 Gs	0.01 kg / 0.03 pounds 14 g / 0.1 N	0.08 kg / 0.18 pounds ~0 Gs
90 mm	0.05 kg / 0.12 pounds 293 Gs	0.01 kg / 0.02 pounds 8 g / 0.1 N	0.05 kg / 0.11 pounds ~0 Gs
100 mm	0.03 kg / 0.07 pounds 230 Gs	0.00 kg / 0.01 pounds 5 g / 0.0 N	0.03 kg / 0.06 pounds ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and sheet setup. The setup of two magnets generates a stronger field and a larger range of action. Planning to create a solid fastener? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the pinch force is extreme. The repulsion force is a bit weaker than the connection force, but still significant.
*Field value in repulsion mode reaches ~0 Gs in the exact middle of the gap (resulting from vector opposition).
Important: Figures apply to sliding force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MP 25x12.5x5 / 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

Extremely neodym field is a real danger to electronics as well as pacemakers. These neodymiums produce a flux that destroys function 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: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MP 25x12.5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.61 km/h (6.28 m/s)	0.27 J
30 mm	36.44 km/h (10.12 m/s)	0.71 J
50 mm	46.94 km/h (13.04 m/s)	1.17 J
100 mm	66.37 km/h (18.43 m/s)	2.35 J

Neodymium magnets are prone to chipping – a strong collision with metal causes immediate chipping. Control the attraction moment – a neodymium left loose speeds with massive force. Impact energy can cause material chips or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't slam with momentum against the metal. A collision at high speed means shattering of the magnet. Wear eye protection when handling with large magnets.

Table 9: Anti-corrosion coating durability
MP 25x12.5x5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (P_c)
MP 25x12.5x5 / 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. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 25x12.5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	5.98 kg	Standard
Water (riverbed)	6.85 kg (+0.87 kg buoyancy gain)	+14.5%

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

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. Shear force

*Note: On a vertical wall, the magnet holds merely ~20% of its perpendicular strength.

2. Steel thickness impact

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

3. Heat tolerance

*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) = 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.

Engineering data and GPSR

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: 030342-2026

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The ring-shaped magnet MP 25x12.5x5 / N38 is created for permanent mounting, where glue might fail or be insufficient. 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 25x12.5x5 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. When tightening the screw, you must maintain great sensitivity. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force 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.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for indoor use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 12.5 mm fits this model. 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 13.81 g. The pulling force of this model is an impressive 5.98 kg, which translates to 58.64 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 12.5 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. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:

They retain attractive force for nearly ten years – the drop is just ~1% (based on simulations),
They are extremely resistant to demagnetization induced by external disturbances,
The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to look better,
Magnetic induction on the working layer of the magnet turns out to be extremely intense,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to versatility in constructing and the capacity to adapt to specific needs,
Versatile presence in electronics industry – they are utilized in hard drives, drive modules, diagnostic systems, as well as modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Limitations

Cons of neodymium magnets: application proposals

Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power 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
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
We suggest a housing - magnetic mount, due to difficulties in creating nuts inside the magnet and complex forms.
Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that tiny parts of these devices can disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Highest magnetic holding force – what it depends on?

Information about lifting capacity was defined for the most favorable conditions, including:

with the application of a sheet made of special test steel, guaranteeing full magnetic saturation
with a cross-section no less than 10 mm
with a surface free of scratches
without any insulating layer between the magnet and steel
under perpendicular application of breakaway force (90-degree angle)
at ambient temperature room level

Practical aspects of lifting capacity – factors

In real-world applications, the actual holding force results from a number of factors, listed from most significant:

Clearance – the presence of foreign body (rust, dirt, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the power to be lost to the other side.
Metal type – not every steel reacts the same. High carbon content worsen the interaction with the magnet.
Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Warnings

Protect data

Data protection: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).

Keep away from children

Absolutely store magnets away from children. Ingestion danger is significant, and the effects of magnets connecting inside the body are tragic.

Shattering risk

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

Caution required

Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Combustion hazard

Powder created during cutting of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Medical interference

For implant holders: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to work with the magnets.

Avoid contact if allergic

It is widely known that nickel (the usual finish) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and choose encased magnets.

Power loss in heat

Do not overheat. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Pinching danger

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!

GPS Danger

A powerful magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Keep magnets close to a device to prevent damaging the sensors.

Caution! Looking for details? Read our article: Are neodymium magnets dangerous?

MP 25x12.5x5 / N38 - ring magnet

Technical of the product - MP 25x12.5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - technical parameters

Table 1: Static force (pull vs gap) - interaction chart MP 25x12.5x5 / N38

Table 2: Sliding capacity (vertical surface) MP 25x12.5x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 25x12.5x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 25x12.5x5 / N38

Table 5: Thermal stability (stability) - resistance threshold MP 25x12.5x5 / N38

Table 6: Two magnets (attraction) - field collision MP 25x12.5x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MP 25x12.5x5 / N38

Table 8: Dynamics (cracking risk) - collision effects MP 25x12.5x5 / N38

Table 9: Anti-corrosion coating durability MP 25x12.5x5 / N38

Table 10: Electrical data (Pc) MP 25x12.5x5 / N38

Table 11: Underwater work (magnet fishing) MP 25x12.5x5 / N38

1. Shear force

2. Steel thickness impact

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Field Strength

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Pros as well as cons of Nd2Fe14B magnets.

Strengths

Limitations

Pull force analysis

Highest magnetic holding force – what it depends on?

Practical aspects of lifting capacity – factors

Warnings

Protect data

Keep away from children

Shattering risk

Caution required

Combustion hazard

Medical interference

Avoid contact if allergic

Power loss in heat

Pinching danger

GPS Danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MP 25x12.5x5 / N38

Table 2: Sliding capacity (vertical surface)
MP 25x12.5x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 25x12.5x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 25x12.5x5 / N38

Table 5: Thermal stability (stability) - resistance threshold
MP 25x12.5x5 / N38

Table 6: Two magnets (attraction) - field collision
MP 25x12.5x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MP 25x12.5x5 / N38

Table 8: Dynamics (cracking risk) - collision effects
MP 25x12.5x5 / N38

Table 9: Anti-corrosion coating durability
MP 25x12.5x5 / N38

Table 10: Electrical data (P_c)
MP 25x12.5x5 / N38

Table 11: Underwater work (magnet fishing)
MP 25x12.5x5 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.