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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

technical parameters »

13.53 ZŁ with VAT / pcs + price for transport

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Product card - 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

Technical modeling of the product - data

The following values constitute the direct effect of a mathematical calculation. Results are based on algorithms for the class Nd₂Fe₁₄B. Real-world conditions may deviate from the simulation results. Use these calculations as a supplementary guide for designers.

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

Pulling power decreases drastically with every mm of spacing. Note that even a very thin break (e.g., contamination, varnish, rust) noticeably diminishes the holding power. Magnets hold optimally at the point of direct contact; distance weakens the force. See how rapidly the pull force drop, when the magnet does not adhere flatly to the steel surface. When calculating the mounting, eliminate unnecessary gaps.

Table 2: Slippage load (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

The following data defines the theoretical holding capacity required to start the downward movement of the magnet downwards along a vertical metal surface (considering typical friction). This parameter is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
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 vertical surface (e.g., a fridge), it you can count on just approx. 1/5 of its maximum pull force. Gravity and a weak degree of grip mean that products slip easier than they detach. Planning a hanger? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a much lighter load. Application of an anti-slip layer can effectively improve the result.

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 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 too thin steel is not enough to conduct the entire magnetic field, which squanders power of the magnet. Should you mount a strong magnet to a thin surface, the flux will pass right through and the attraction force will be weaker. To utilize 100% of this magnet's power, you need a suitably thick backing of steel. The material oversaturation causes that on delicate walls (e.g., appliance housings), the holder holds weaker. We recommend selecting the steel thickness based on the following data.

Table 5: Thermal resistance (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 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 parameters after exceeding the maximum temperature. Protect against heat – heat can permanently destroy this product. As the temperature rises, the neodymium's capacity temporarily lowers. Avoid using this magnet in hot environments higher than its operating temperature limit. Ignoring the limit will cause destruction of magnetism.

*Important note: Temperature resistance is determined by both grade, but also on the magnet's shape. Thin magnets (low Pc) risk losing magnetic properties under lower heat stress than long magnets. Red status in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field range
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 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 interact from a wider radius than a neodymium and metal combination. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Want to build a powerful holder? Use a pair of magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still impressive.
*Flux density between like poles drops to ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Important: Results apply to friction force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - 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
Phone / Smartphone	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 poses a large risk to electronics as well as medical implants. These magnets generate a field that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field passes through tissues and glass. Exceptional care must be taken by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, remotes, speakers, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - 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

Neodymium magnets are very brittle – a violent impact against metal risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Kinetic force can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Corrosion resistance
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: Electrical 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 emitted by the pole surface. Essential parameter for generator designers as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
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%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Caution: On a vertical wall, the magnet retains only ~20% of its nominal pull.

2. Steel thickness impact

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

3. Temperature resistance

*For N38 material, 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

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.

Technical specification and ecology

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: 030191-2026

Magnet Unit Converter

Magnet pull force

Newtons (N)

Force in lbs

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Simply complete any input, to let the converter compute the rest instantly.

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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. This product with a force of 10.49 kg works great as a cabinet closure, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 25x13x8 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle 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.

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 rubberized holders or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 13 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. 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 key parameter here is the lifting capacity amounting to approximately 10.49 kg (force ~102.90 N). The mounting hole diameter is precisely 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). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros and cons of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They have constant strength, and over more than ten years their performance decreases symbolically – ~1% (according to theory),
They are extremely resistant to demagnetization induced by external magnetic fields,
A magnet with a metallic nickel surface is more attractive,
They show high magnetic induction at the operating surface, which affects their effectiveness,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Due to the potential of precise forming and adaptation to specialized projects, neodymium magnets can be modeled in a broad palette of shapes and sizes, which increases their versatility,
Fundamental importance in advanced technology sectors – they are used in computer drives, brushless drives, diagnostic systems, as well as technologically advanced constructions.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Due to limitations in producing nuts and complex shapes in magnets, we propose using casing - magnetic mount.
Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Furthermore, small elements of these magnets can complicate diagnosis medical when they are in the body.
Due to complex production process, their price exceeds standard values,

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

The specified lifting capacity refers to the maximum value, recorded under laboratory conditions, namely:

using a base made of mild steel, acting as a magnetic yoke
possessing a thickness of minimum 10 mm to ensure full flux closure
with an ideally smooth contact surface
with total lack of distance (no impurities)
for force applied at a right angle (in the magnet axis)
at room temperature

Impact of factors on magnetic holding capacity in practice

Please note that the magnet holding may be lower influenced by the following factors, in order of importance:

Clearance – existence of any layer (paint, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
Direction of force – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
Chemical composition of the base – mild steel attracts best. Alloy admixtures lower magnetic permeability and holding force.
Plate texture – ground elements ensure maximum contact, which increases force. Uneven metal weaken the grip.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safe handling of neodymium magnets

No play value

Strictly store magnets away from children. Choking hazard is significant, and the effects of magnets clamping inside the body are very dangerous.

ICD Warning

Patients with a heart stimulator should keep an large gap from magnets. The magnetic field can disrupt the operation of the implant.

Physical harm

Mind your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Magnets are brittle

Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.

Data carriers

Avoid bringing magnets close to a purse, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.

Precision electronics

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

Flammability

Powder created during grinding of magnets is combustible. Do not drill into magnets unless you are an expert.

Conscious usage

Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Demagnetization risk

Watch the temperature. Heating the magnet to high heat will destroy its properties and pulling force.

Avoid contact if allergic

Some people suffer from a sensitization to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching may cause an allergic reaction. It is best to wear protective gloves.

Caution! Learn more about hazards in the article: Magnet Safety Guide.

MP 25x13x8 / N38 - ring magnet

Product card - MP 25x13x8 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - data

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

Table 2: Slippage load (wall) MP 25x13x8 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 25x13x8 / N38

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

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

Table 6: Two magnets (repulsion) - field range MP 25x13x8 / N38

Table 7: Hazards (electronics) - warnings MP 25x13x8 / N38

Table 8: Impact energy (kinetic energy) - warning MP 25x13x8 / N38

Table 9: Corrosion resistance MP 25x13x8 / N38

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

Table 11: Underwater work (magnet fishing) MP 25x13x8 / N38

1. Shear force

2. Steel thickness impact

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

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Pros and cons of neodymium magnets.

Pros

Weaknesses

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

Impact of factors on magnetic holding capacity in practice

Safe handling of neodymium magnets

No play value

ICD Warning

Physical harm

Magnets are brittle

Data carriers

Precision electronics

Flammability

Conscious usage

Demagnetization risk

Avoid contact if allergic

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Slippage load (wall)
MP 25x13x8 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 25x13x8 / N38

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

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

Table 6: Two magnets (repulsion) - field range
MP 25x13x8 / N38

Table 7: Hazards (electronics) - warnings
MP 25x13x8 / N38

Table 8: Impact energy (kinetic energy) - warning
MP 25x13x8 / N38

Table 9: Corrosion resistance
MP 25x13x8 / N38

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

Table 11: Underwater work (magnet fishing)
MP 25x13x8 / N38