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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

product specifications »

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Technical parameters - 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

Engineering analysis of the assembly - report

The following information constitute the outcome of a mathematical simulation. Values rely on algorithms for the material Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Treat these data as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - characteristics
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 LBS 10490.0 g / 102.9 N	crushing
1 mm	5310 Gs 531.0 mT	8.86 kg / 19.54 LBS 8861.7 g / 86.9 N	strong
2 mm	4846 Gs 484.6 mT	7.38 kg / 16.27 LBS 7379.4 g / 72.4 N	strong
3 mm	4397 Gs 439.7 mT	6.08 kg / 13.40 LBS 6077.4 g / 59.6 N	strong
5 mm	3576 Gs 357.6 mT	4.02 kg / 8.86 LBS 4019.0 g / 39.4 N	strong
10 mm	2073 Gs 207.3 mT	1.35 kg / 2.98 LBS 1350.2 g / 13.2 N	low risk
15 mm	1231 Gs 123.1 mT	0.48 kg / 1.05 LBS 476.4 g / 4.7 N	low risk
20 mm	773 Gs 77.3 mT	0.19 kg / 0.41 LBS 187.6 g / 1.8 N	low risk
30 mm	356 Gs 35.6 mT	0.04 kg / 0.09 LBS 39.8 g / 0.4 N	low risk
50 mm	115 Gs 11.5 mT	0.00 kg / 0.01 LBS 4.1 g / 0.0 N	low risk

Grip strength decreases sharply with every mm of spacing. Note that even a very thin break (e.g., contamination, varnish, dust) significantly weakens the grip. Magnetic products work most effectively during direct contact; gap nullifies the force. Notice how flashily the pull force plummet, when the product does not adhere directly to the metal substrate. When designing the mounting, avoid redundant distances.

Table 2: Sliding force (wall)
MP 25x13x8 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.10 kg / 4.63 LBS 2098.0 g / 20.6 N
1 mm	Stal (~0.2)	1.77 kg / 3.91 LBS 1772.0 g / 17.4 N
2 mm	Stal (~0.2)	1.48 kg / 3.25 LBS 1476.0 g / 14.5 N
3 mm	Stal (~0.2)	1.22 kg / 2.68 LBS 1216.0 g / 11.9 N
5 mm	Stal (~0.2)	0.80 kg / 1.77 LBS 804.0 g / 7.9 N
10 mm	Stal (~0.2)	0.27 kg / 0.60 LBS 270.0 g / 2.6 N
15 mm	Stal (~0.2)	0.10 kg / 0.21 LBS 96.0 g / 0.9 N
20 mm	Stal (~0.2)	0.04 kg / 0.08 LBS 38.0 g / 0.4 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 8.0 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 theoretical holding capacity necessary to initiate the slippage of the magnet downwards along a upright metal surface (considering typical friction). This parameter varies with the gap size between the magnet and the surface.

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 LBS 3147.0 g / 30.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.10 kg / 4.63 LBS 2098.0 g / 20.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.05 kg / 2.31 LBS 1049.0 g / 10.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.25 kg / 11.56 LBS 5245.0 g / 51.5 N

When hanging a element on a upright plane (e.g., a board), it will only hold barely approx. 20%-30% of its nominal power. Gravity and a low friction coefficient influence the fact that magnets slip easier than they pull off. Want to create a vertical fastening? Remember that the shear force is much weaker than the maximum static pull force. On a smooth steel, the element will give way down under a much lighter cargo. Using a rubber coating can effectively increase the grip.

Table 4: Material efficiency (saturation) - 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 LBS 524.5 g / 5.1 N
1 mm	13%	1.31 kg / 2.89 LBS 1311.3 g / 12.9 N
2 mm	25%	2.62 kg / 5.78 LBS 2622.5 g / 25.7 N
3 mm	38%	3.93 kg / 8.67 LBS 3933.8 g / 38.6 N
5 mm	63%	6.56 kg / 14.45 LBS 6556.3 g / 64.3 N
10 mm	100%	10.49 kg / 23.13 LBS 10490.0 g / 102.9 N
11 mm	100%	10.49 kg / 23.13 LBS 10490.0 g / 102.9 N
12 mm	100%	10.49 kg / 23.13 LBS 10490.0 g / 102.9 N

A thin sheet is not enough to take in the full magnetic flux, which wastes potential of the holder. Should you install a neodymium to a thin surface, the flux will pass right through and the holding will be smaller. To achieve the maximum of this magnet's potential, you require a sufficiently solid element of steel. The saturation effect causes that on delicate walls (e.g., car bodies), the magnet shows lower pull force. We advise picking the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 25x13x8 / N38

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

Classic neodymiums irreversibly lose strength after exceeding the maximum temperature. Watch out for overheating – high temperature can permanently damage this product. With increasing heat, the magnet's capacity momentarily decreases. Do not use this product in hot environments exceeding its safe range. Exceeding the critical threshold will lead to permanent loss of magnetic properties.

*Technical advisory: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low Pc) may lose charge permanently sooner than taller cylinders. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 25x13x8 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	77.07 kg / 169.90 LBS 6 082 Gs	11.56 kg / 25.49 LBS 11560 g / 113.4 N	N/A
1 mm	71.01 kg / 156.55 LBS 11 091 Gs	10.65 kg / 23.48 LBS 10652 g / 104.5 N	63.91 kg / 140.90 LBS ~0 Gs
2 mm	65.10 kg / 143.53 LBS 10 620 Gs	9.77 kg / 21.53 LBS 9766 g / 95.8 N	58.59 kg / 129.18 LBS ~0 Gs
3 mm	59.50 kg / 131.17 LBS 10 153 Gs	8.92 kg / 19.68 LBS 8925 g / 87.6 N	53.55 kg / 118.06 LBS ~0 Gs
5 mm	49.26 kg / 108.61 LBS 9 238 Gs	7.39 kg / 16.29 LBS 7389 g / 72.5 N	44.34 kg / 97.74 LBS ~0 Gs
10 mm	29.53 kg / 65.10 LBS 7 152 Gs	4.43 kg / 9.76 LBS 4429 g / 43.4 N	26.57 kg / 58.59 LBS ~0 Gs
20 mm	9.92 kg / 21.87 LBS 4 145 Gs	1.49 kg / 3.28 LBS 1488 g / 14.6 N	8.93 kg / 19.68 LBS ~0 Gs
50 mm	0.61 kg / 1.33 LBS 1 024 Gs	0.09 kg / 0.20 LBS 91 g / 0.9 N	0.54 kg / 1.20 LBS ~0 Gs
60 mm	0.29 kg / 0.64 LBS 712 Gs	0.04 kg / 0.10 LBS 44 g / 0.4 N	0.26 kg / 0.58 LBS ~0 Gs
70 mm	0.15 kg / 0.34 LBS 514 Gs	0.02 kg / 0.05 LBS 23 g / 0.2 N	0.14 kg / 0.30 LBS ~0 Gs
80 mm	0.08 kg / 0.19 LBS 383 Gs	0.01 kg / 0.03 LBS 13 g / 0.1 N	0.08 kg / 0.17 LBS ~0 Gs
90 mm	0.05 kg / 0.11 LBS 293 Gs	0.01 kg / 0.02 LBS 7 g / 0.1 N	0.04 kg / 0.10 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 neodymium and metal setup. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of action. Want to build a solid fastener? Use a pair of magnets instead of one magnet and a striker plate. Remember that when connecting a pair of magnets, the collision energy is huge. The repulsion force is slightly lower than the attraction, but still impressive.
*The magnetic induction in repulsion mode reaches ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Estimates apply to shear force of a pair of same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
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
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 as well as pacemakers. These neodymiums produce a field that disrupts operation of digital equipment. Be aware: the invisible magnetic field penetrates the body and glass. Exceptional care must be exercised by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
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 prone to chipping – a violent impact against metal risks their cracking. Watch the impact speed – a neodymium left loose turns into a projectile. Impact energy can trigger coating fragments or injury to fingers. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the magnet. Wear eye protection when playing with powerful specimens.

Table 9: Surface protection spec
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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Moisture resistance is crucial for installations in bathrooms or outdoors.

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 pole surface. Key data in coil applications and motors. P_c value determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
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: 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

*Warning: On a vertical wall, the magnet retains just a fraction of its nominal pull.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Power loss vs temp

*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) = 1.04

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%

Sustainability

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

Measurement Calculator

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The ring-shaped magnet MP 25x13x8 / 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 25x13x8 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. When tightening the screw, you must maintain caution. 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. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. 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.

The presented product is a ring magnet with dimensions Ø25 mm (outer diameter) and height 8 mm. The key parameter here is the lifting capacity amounting to approximately 10.49 kg (force ~102.90 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 13 mm.

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

Strengths and weaknesses of neodymium magnets.

Strengths

Besides their immense pulling force, neodymium magnets offer the following advantages:

They do not lose magnetism, even over approximately ten years – the drop in lifting capacity is only ~1% (based on measurements),
They show high resistance to demagnetization induced by external field influence,
In other words, due to the metallic surface of gold, the element looks attractive,
They are known for high magnetic induction at the operating surface, which increases their power,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Possibility of accurate modeling and adjusting to specific requirements,
Significant place in modern industrial fields – they find application in hard drives, brushless drives, medical devices, and complex engineering applications.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest cover - magnetic holder, due to difficulties in creating threads inside the magnet and complex shapes.
Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
Due to complex production process, their price is relatively high,

Lifting parameters

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

Information about lifting capacity is the result of a measurement for ideal contact conditions, including:

with the application of a sheet made of special test steel, ensuring full magnetic saturation
with a thickness no less than 10 mm
with a surface perfectly flat
with total lack of distance (without coatings)
during pulling in a direction vertical to the plane
in temp. approx. 20°C

Lifting capacity in real conditions – factors

Holding efficiency is influenced by specific conditions, including (from most important):

Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
Plate thickness – too thin sheet does not close the flux, causing part of the power to be escaped to the other side.
Material type – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet and the plate reduces the holding force.

Precautions when working with NdFeB magnets

Allergy Warning

Some people have a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact may cause an allergic reaction. We recommend use protective gloves.

Warning for heart patients

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Do not give to children

Product intended for adults. Small elements can be swallowed, leading to intestinal necrosis. Store out of reach of children and animals.

Data carriers

Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, medical aids, mechanical watches).

Pinching danger

Big blocks can smash fingers instantly. Do not place your hand between two attracting surfaces.

Thermal limits

Standard neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

Dust explosion hazard

Powder produced during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Risk of cracking

NdFeB magnets are ceramic materials, meaning they are fragile like glass. Impact of two magnets will cause them shattering into small pieces.

Respect the power

Exercise caution. Neodymium magnets act from a distance and snap with massive power, often faster than you can react.

Precision electronics

A strong magnetic field negatively affects the operation of compasses in phones and GPS navigation. Keep magnets near a smartphone to avoid breaking the sensors.

Security! Need more info? Read our article: Why are neodymium magnets dangerous?

MP 25x13x8 / N38 - ring magnet

Technical parameters - MP 25x13x8 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - report

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

Table 2: Sliding force (wall) MP 25x13x8 / N38

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

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

Table 5: Thermal resistance (material behavior) - resistance threshold MP 25x13x8 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MP 25x13x8 / N38

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

Table 8: Collisions (cracking risk) - warning MP 25x13x8 / N38

Table 9: Surface protection spec MP 25x13x8 / N38

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

Table 11: Hydrostatics and buoyancy MP 25x13x8 / N38

1. Vertical hold

2. Steel thickness impact

3. Power loss vs temp

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

Material specification

Sustainability

Pulling force

Field Strength

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Strengths and weaknesses of neodymium magnets.

Strengths

Disadvantages

Lifting parameters

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

Lifting capacity in real conditions – factors

Precautions when working with NdFeB magnets

Allergy Warning

Warning for heart patients

Do not give to children

Data carriers

Pinching danger

Thermal limits

Dust explosion hazard

Risk of cracking

Respect the power

Precision electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding force (wall)
MP 25x13x8 / N38

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

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

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 25x13x8 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 25x13x8 / N38

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

Table 8: Collisions (cracking risk) - warning
MP 25x13x8 / N38

Table 9: Surface protection spec
MP 25x13x8 / N38

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

Table 11: Hydrostatics and buoyancy
MP 25x13x8 / N38