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MP 25x13x8 / 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 030191

GTIN/EAN: 5906301812081

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

13 mm [±0,1 mm]

Height

8 mm [±0,1 mm]

Weight

21.49 g

Magnetization Direction

↑ axial

Load capacity

10.49 kg / 102.90 N

Magnetic Induction

334.09 mT / 3341 Gs

Coating

[NiCuNi] Nickel

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Technical - MP 25x13x8 / N38 - ring magnet

Specification / characteristics - MP 25x13x8 / N38 - ring magnet

properties

properties	values
Cat. no.	030191
GTIN/EAN	5906301812081
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	13 mm [±0,1 mm]
Height	8 mm [±0,1 mm]
Weight	21.49 g
Magnetization Direction	↑ axial
Load capacity ~ ?	10.49 kg / 102.90 N
Magnetic Induction ~ ?	334.09 mT / 3341 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x13x8 / 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 product - report

The following information are the direct effect of a physical calculation. Values rely on algorithms for the class Nd₂Fe₁₄B. Actual performance might slightly deviate from the simulation results. Treat these data as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - interaction chart
MP 25x13x8 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5777 Gs 577.7 mT	10.49 kg / 23.13 pounds 10490.0 g / 102.9 N	crushing
1 mm	5310 Gs 531.0 mT	8.86 kg / 19.54 pounds 8861.7 g / 86.9 N	strong
2 mm	4846 Gs 484.6 mT	7.38 kg / 16.27 pounds 7379.4 g / 72.4 N	strong
3 mm	4397 Gs 439.7 mT	6.08 kg / 13.40 pounds 6077.4 g / 59.6 N	strong
5 mm	3576 Gs 357.6 mT	4.02 kg / 8.86 pounds 4019.0 g / 39.4 N	strong
10 mm	2073 Gs 207.3 mT	1.35 kg / 2.98 pounds 1350.2 g / 13.2 N	weak grip
15 mm	1231 Gs 123.1 mT	0.48 kg / 1.05 pounds 476.4 g / 4.7 N	weak grip
20 mm	773 Gs 77.3 mT	0.19 kg / 0.41 pounds 187.6 g / 1.8 N	weak grip
30 mm	356 Gs 35.6 mT	0.04 kg / 0.09 pounds 39.8 g / 0.4 N	weak grip
50 mm	115 Gs 11.5 mT	0.00 kg / 0.01 pounds 4.1 g / 0.0 N	weak grip

Pulling power decreases sharply with every mm of spacing. Note that even a very thin break (e.g., contamination, varnish, veneer) strongly weakens the grip. Magnetic products work optimally in perfect adhesion; distance nullifies the power. Notice how rapidly the parameters plummet, when the magnet does not adhere tightly to the steel surface. When calculating the arrangement, avoid redundant distances.

Table 2: Vertical capacity (wall)
MP 25x13x8 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.10 kg / 4.63 pounds 2098.0 g / 20.6 N
1 mm	Stal (~0.2)	1.77 kg / 3.91 pounds 1772.0 g / 17.4 N
2 mm	Stal (~0.2)	1.48 kg / 3.25 pounds 1476.0 g / 14.5 N
3 mm	Stal (~0.2)	1.22 kg / 2.68 pounds 1216.0 g / 11.9 N
5 mm	Stal (~0.2)	0.80 kg / 1.77 pounds 804.0 g / 7.9 N
10 mm	Stal (~0.2)	0.27 kg / 0.60 pounds 270.0 g / 2.6 N
15 mm	Stal (~0.2)	0.10 kg / 0.21 pounds 96.0 g / 0.9 N
20 mm	Stal (~0.2)	0.04 kg / 0.08 pounds 38.0 g / 0.4 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 8.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section defines the estimated holding capacity needed to cause the sliding of the magnet downwards against a vertical steel wall (assuming typical friction coefficient). This parameter is relative to the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 25x13x8 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.15 kg / 6.94 pounds 3147.0 g / 30.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.10 kg / 4.63 pounds 2098.0 g / 20.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.05 kg / 2.31 pounds 1049.0 g / 10.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.25 kg / 11.56 pounds 5245.0 g / 51.5 N

When hanging a magnet on a vertical surface (e.g., a car body), it will only hold barely about 20%-30% of its maximum pull force. Gravity and a weak degree of grip cause that products slip easier than they pop off the substrate. Planning a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a smooth steel, the holder will slip down under a much lighter cargo. Application of an anti-slip pad can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MP 25x13x8 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.52 kg / 1.16 pounds 524.5 g / 5.1 N
1 mm	13%	1.31 kg / 2.89 pounds 1311.3 g / 12.9 N
2 mm	25%	2.62 kg / 5.78 pounds 2622.5 g / 25.7 N
3 mm	38%	3.93 kg / 8.67 pounds 3933.8 g / 38.6 N
5 mm	63%	6.56 kg / 14.45 pounds 6556.3 g / 64.3 N
10 mm	100%	10.49 kg / 23.13 pounds 10490.0 g / 102.9 N
11 mm	100%	10.49 kg / 23.13 pounds 10490.0 g / 102.9 N
12 mm	100%	10.49 kg / 23.13 pounds 10490.0 g / 102.9 N

A thin sheet is incapable of take in the full magnetic flux, which wastes potential of the holder. Should you attach a powerful product to a too thin substrate, the magnetism will penetrate right through and the attraction force will be weaker. To utilize the maximum of this neodymium's power, you need a suitably thick backing of steel. The material oversaturation means that on thin elements (e.g., appliance housings), the magnet works worse. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - power drop
MP 25x13x8 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	10.49 kg / 23.13 pounds 10490.0 g / 102.9 N	OK
40 °C	-2.2%	10.26 kg / 22.62 pounds 10259.2 g / 100.6 N	OK
60 °C	-4.4%	10.03 kg / 22.11 pounds 10028.4 g / 98.4 N	OK
80 °C	-6.6%	9.80 kg / 21.60 pounds 9797.7 g / 96.1 N
100 °C	-28.8%	7.47 kg / 16.47 pounds 7468.9 g / 73.3 N

Ordinary NdFeB products change their properties parameters after exceeding the maximum temperature. Avoid high temperatures – heat can permanently demagnetize this product. With every degree above norm, the magnet's capacity briefly lowers. Refrain from using this product close to ovens higher than its operating temperature limit. Too high temperature will cause permanent loss of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) are more susceptible to demagnetization sooner than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MP 25x13x8 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	77.07 kg / 169.90 pounds 6 082 Gs	11.56 kg / 25.49 pounds 11560 g / 113.4 N	N/A
1 mm	71.01 kg / 156.55 pounds 11 091 Gs	10.65 kg / 23.48 pounds 10652 g / 104.5 N	63.91 kg / 140.90 pounds ~0 Gs
2 mm	65.10 kg / 143.53 pounds 10 620 Gs	9.77 kg / 21.53 pounds 9766 g / 95.8 N	58.59 kg / 129.18 pounds ~0 Gs
3 mm	59.50 kg / 131.17 pounds 10 153 Gs	8.92 kg / 19.68 pounds 8925 g / 87.6 N	53.55 kg / 118.06 pounds ~0 Gs
5 mm	49.26 kg / 108.61 pounds 9 238 Gs	7.39 kg / 16.29 pounds 7389 g / 72.5 N	44.34 kg / 97.74 pounds ~0 Gs
10 mm	29.53 kg / 65.10 pounds 7 152 Gs	4.43 kg / 9.76 pounds 4429 g / 43.4 N	26.57 kg / 58.59 pounds ~0 Gs
20 mm	9.92 kg / 21.87 pounds 4 145 Gs	1.49 kg / 3.28 pounds 1488 g / 14.6 N	8.93 kg / 19.68 pounds ~0 Gs
50 mm	0.61 kg / 1.33 pounds 1 024 Gs	0.09 kg / 0.20 pounds 91 g / 0.9 N	0.54 kg / 1.20 pounds ~0 Gs
60 mm	0.29 kg / 0.64 pounds 712 Gs	0.04 kg / 0.10 pounds 44 g / 0.4 N	0.26 kg / 0.58 pounds ~0 Gs
70 mm	0.15 kg / 0.34 pounds 514 Gs	0.02 kg / 0.05 pounds 23 g / 0.2 N	0.14 kg / 0.30 pounds ~0 Gs
80 mm	0.08 kg / 0.19 pounds 383 Gs	0.01 kg / 0.03 pounds 13 g / 0.1 N	0.08 kg / 0.17 pounds ~0 Gs
90 mm	0.05 kg / 0.11 pounds 293 Gs	0.01 kg / 0.02 pounds 7 g / 0.1 N	0.04 kg / 0.10 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 attract each other from a significantly greater distance than a neodymium and metal combination. The connection of two magnets generates a stronger field and a larger range of performance. Designing a solid fastener? Utilize two neodymiums instead of one magnet and a steel. Remember that when bringing together two magnets, the collision energy is extreme. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction between like poles is approximately ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Calculations refer to shear force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MP 25x13x8 / 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
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 large risk to IT equipment and medical implants. These neodymiums produce a flux that destroys function of sensitive medical devices. Notice: the unseen radiation passes through tissues and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MP 25x13x8 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.01 km/h (6.67 m/s)	0.48 J
30 mm	38.68 km/h (10.75 m/s)	1.24 J
50 mm	49.84 km/h (13.84 m/s)	2.06 J
100 mm	70.46 km/h (19.57 m/s)	4.12 J

NdFeB products are delicate – a strong collision with metal can result in shattering. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or painful pinches to fingers. Always hold the magnet during installation so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 25x13x8 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MP 25x13x8 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	23 118 Mx	231.2 µWb
P_c Coefficient	1.04	High (Stable)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators and motors. P_c value defines the working geometry.

Table 11: Physics of underwater searching
MP 25x13x8 / N38

Environment	Effective steel pull	Effect
Air (land)	10.49 kg	Standard
Water (riverbed)	12.01 kg (+1.52 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

*Warning: On a vertical surface, the magnet retains just ~20% of its nominal pull.

2. Plate thickness effect

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

3. Heat tolerance

*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) = 1.04

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%

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: 030191-2026

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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. 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 25x13x8 / 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.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but does not ensure full waterproofing. 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.

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 Ø25x8 mm and a weight of 21.49 g. The pulling force of this model is an impressive 10.49 kg, which translates to 102.90 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 13 mm.

The poles are located on the planes with holes, not on the sides of the ring. 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.

Pros as well as cons of neodymium magnets.

Pros

Apart from their strong holding force, neodymium magnets have these key benefits:

They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (according to literature),
They are resistant to demagnetization induced by external field influence,
In other words, due to the metallic surface of silver, the element becomes visually attractive,
Neodymium magnets create maximum magnetic induction on a their surface, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to versatility in forming and the ability to modify to client solutions,
Huge importance in advanced technology sectors – they are utilized in hard drives, brushless drives, medical equipment, and multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Limitations

Disadvantages of neodymium magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields 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 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 rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest a housing - magnetic holder, due to difficulties in creating nuts inside the magnet and complex forms.
Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these devices are able to be problematic in diagnostics medical in case of swallowing.
With mass production the cost of neodymium magnets is economically unviable,

Lifting parameters

Highest magnetic holding force – what affects it?

The load parameter shown refers to the limit force, obtained under ideal test conditions, meaning:

with the use of a sheet made of special test steel, guaranteeing maximum field concentration
with a thickness of at least 10 mm
with an ground touching surface
without any air gap between the magnet and steel
during pulling in a direction vertical to the mounting surface
at room temperature

What influences lifting capacity in practice

It is worth knowing that the magnet holding will differ depending on elements below, starting with the most relevant:

Air gap (between the magnet and the plate), because even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Hardened steels may attract less.
Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
Heat – neodymium magnets 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 by applying a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Safety rules for work with NdFeB magnets

GPS and phone interference

Be aware: rare earth magnets generate a field that disrupts precision electronics. Keep a separation from your phone, tablet, and navigation systems.

Warning for heart patients

For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.

Heat warning

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

No play value

Adult use only. Tiny parts pose a choking risk, leading to severe trauma. Store out of reach of children and animals.

Magnetic media

Do not bring magnets near a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Machining danger

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

Serious injuries

Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Metal Allergy

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease working with magnets and wear gloves.

Protective goggles

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets will cause them breaking into shards.

Handling rules

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Attention! More info about risks in the article: Safety of working with magnets.

MP 25x13x8 / N38 - ring magnet

Technical - MP 25x13x8 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - report

Table 1: Static force (pull vs gap) - interaction chart MP 25x13x8 / N38

Table 2: Vertical capacity (wall) MP 25x13x8 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MP 25x13x8 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 25x13x8 / N38

Table 5: Thermal stability (material behavior) - power drop MP 25x13x8 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MP 25x13x8 / N38

Table 7: Safety (HSE) (implants) - warnings MP 25x13x8 / N38

Table 8: Dynamics (kinetic energy) - collision effects MP 25x13x8 / N38

Table 9: Anti-corrosion coating durability MP 25x13x8 / N38

Table 10: Construction data (Pc) MP 25x13x8 / N38

Table 11: Physics of underwater searching MP 25x13x8 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Heat tolerance

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

Chemical composition

Environmental data

Magnet pull force

Magnetic Induction

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MPL 20x8x6 / N38 - lamellar magnet

MW 5x15 / N38 - cylindrical magnet

Pros as well as cons of neodymium magnets.

Pros

Limitations

Lifting parameters

Highest magnetic holding force – what affects it?

What influences lifting capacity in practice

Safety rules for work with NdFeB magnets

GPS and phone interference

Warning for heart patients

Heat warning

No play value

Magnetic media

Machining danger

Serious injuries

Metal Allergy

Protective goggles

Handling rules

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - interaction chart
MP 25x13x8 / N38

Table 2: Vertical capacity (wall)
MP 25x13x8 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 25x13x8 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 25x13x8 / N38

Table 5: Thermal stability (material behavior) - power drop
MP 25x13x8 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MP 25x13x8 / N38

Table 7: Safety (HSE) (implants) - warnings
MP 25x13x8 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MP 25x13x8 / N38

Table 9: Anti-corrosion coating durability
MP 25x13x8 / N38

Table 10: Construction data (P_c)
MP 25x13x8 / N38

Table 11: Physics of underwater searching
MP 25x13x8 / N38