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MP 25x5x27 / 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 030192

GTIN/EAN: 5906301812098

5.00

Diameter

25 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

27 mm [±0,1 mm]

Weight

95.43 g

Magnetization Direction

↑ axial

Load capacity

18.51 kg / 181.54 N

Magnetic Induction

562.34 mT / 5623 Gs

Coating

[NiCuNi] Nickel

see technical data »

47.18 ZŁ with VAT / pcs + price for transport

38.36 ZŁ net + 23% VAT / pcs

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Physical properties - MP 25x5x27 / N38 - ring magnet

Specification / characteristics - MP 25x5x27 / N38 - ring magnet

properties

properties	values
Cat. no.	030192
GTIN/EAN	5906301812098
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter	25 mm [±0,1 mm]
internal diameter Ø	5 mm [±0,1 mm]
Height	27 mm [±0,1 mm]
Weight	95.43 g
Magnetization Direction	↑ axial
Load capacity ~ ?	18.51 kg / 181.54 N
Magnetic Induction ~ ?	562.34 mT / 5623 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x5x27 / 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 assembly - data

These values constitute the result of a mathematical simulation. Results are based on algorithms for the class Nd₂Fe₁₄B. Operational performance might slightly differ. Please consider these calculations as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - power drop
MP 25x5x27 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5716 Gs 571.6 mT	18.51 kg / 40.81 pounds 18510.0 g / 181.6 N	dangerous!
1 mm	5288 Gs 528.8 mT	15.84 kg / 34.92 pounds 15839.8 g / 155.4 N	dangerous!
2 mm	4861 Gs 486.1 mT	13.38 kg / 29.51 pounds 13384.0 g / 131.3 N	dangerous!
3 mm	4446 Gs 444.6 mT	11.20 kg / 24.69 pounds 11198.0 g / 109.9 N	dangerous!
5 mm	3677 Gs 367.7 mT	7.66 kg / 16.88 pounds 7657.5 g / 75.1 N	warning
10 mm	2216 Gs 221.6 mT	2.78 kg / 6.13 pounds 2782.1 g / 27.3 N	warning
15 mm	1354 Gs 135.4 mT	1.04 kg / 2.29 pounds 1037.8 g / 10.2 N	weak grip
20 mm	864 Gs 86.4 mT	0.42 kg / 0.93 pounds 423.3 g / 4.2 N	weak grip
30 mm	405 Gs 40.5 mT	0.09 kg / 0.21 pounds 93.1 g / 0.9 N	weak grip
50 mm	133 Gs 13.3 mT	0.01 kg / 0.02 pounds 10.0 g / 0.1 N	weak grip

Grip strength decreases drastically with every subsequent millimeter of spacing. Note that even a very thin break (e.g., dirt, paint, rust) noticeably reduces the pull force. Magnets work strongest during direct contact; distance nullifies the power. Analyze how flashily the pull force plummet, when the product does not touch tightly to the steel surface. When designing the assembly, discard unnecessary gaps.

Table 2: Sliding hold (vertical surface)
MP 25x5x27 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	3.70 kg / 8.16 pounds 3702.0 g / 36.3 N
1 mm	Stal (~0.2)	3.17 kg / 6.98 pounds 3168.0 g / 31.1 N
2 mm	Stal (~0.2)	2.68 kg / 5.90 pounds 2676.0 g / 26.3 N
3 mm	Stal (~0.2)	2.24 kg / 4.94 pounds 2240.0 g / 22.0 N
5 mm	Stal (~0.2)	1.53 kg / 3.38 pounds 1532.0 g / 15.0 N
10 mm	Stal (~0.2)	0.56 kg / 1.23 pounds 556.0 g / 5.5 N
15 mm	Stal (~0.2)	0.21 kg / 0.46 pounds 208.0 g / 2.0 N
20 mm	Stal (~0.2)	0.08 kg / 0.19 pounds 84.0 g / 0.8 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 18.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N

This section indicates the approximate holding capacity sufficient to start the shifting of the magnet down against a upright steel plate (considering typical friction). This parameter is a function of the gap size between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 25x5x27 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	5.55 kg / 12.24 pounds 5553.0 g / 54.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	3.70 kg / 8.16 pounds 3702.0 g / 36.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.85 kg / 4.08 pounds 1851.0 g / 18.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	9.26 kg / 20.40 pounds 9255.0 g / 90.8 N

When placing a element on a vertical plane (e.g., a car body), it will maintain only approx. 1/5 of its nominal power. Gravitational force and a weak degree of grip cause that products slip easier than they pop off the substrate. Designing a wall mount? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will slip down under a significantly smaller cargo. Utilizing a rubberized pad can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x5x27 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.93 kg / 2.04 pounds 925.5 g / 9.1 N
1 mm	13%	2.31 kg / 5.10 pounds 2313.8 g / 22.7 N
2 mm	25%	4.63 kg / 10.20 pounds 4627.5 g / 45.4 N
3 mm	38%	6.94 kg / 15.30 pounds 6941.3 g / 68.1 N
5 mm	63%	11.57 kg / 25.50 pounds 11568.8 g / 113.5 N
10 mm	100%	18.51 kg / 40.81 pounds 18510.0 g / 181.6 N
11 mm	100%	18.51 kg / 40.81 pounds 18510.0 g / 181.6 N
12 mm	100%	18.51 kg / 40.81 pounds 18510.0 g / 181.6 N

A thin sheet cannot absorb the full magnetic flux, which weakens actual performance of the magnet. If you attach a powerful product to a too thin substrate, the magnetism will pass right through and the pull force will drop sharply. To squeeze 100% of this magnet's power, you require a sufficiently solid backing of steel. The saturation phenomenon means that on thin elements (e.g., appliance housings), the product works worse. We recommend selecting the steel cross-section according to the table below.

Table 5: Working in heat (stability) - thermal limit
MP 25x5x27 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	18.51 kg / 40.81 pounds 18510.0 g / 181.6 N	OK
40 °C	-2.2%	18.10 kg / 39.91 pounds 18102.8 g / 177.6 N	OK
60 °C	-4.4%	17.70 kg / 39.01 pounds 17695.6 g / 173.6 N	OK
80 °C	-6.6%	17.29 kg / 38.11 pounds 17288.3 g / 169.6 N
100 °C	-28.8%	13.18 kg / 29.05 pounds 13179.1 g / 129.3 N

Ordinary NdFeB products irreversibly lose parameters above the temperature limit. Protect against heat – high temperature can irreversibly damage this product. As the temperature rises, the magnet's force momentarily lowers. Avoid using this magnet in hot environments higher than its operating temperature limit. Too high temperature will lead to destruction of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures compared to rod magnets. The danger warning in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MP 25x5x27 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	13.99 kg / 30.83 pounds 6 064 Gs	2.10 kg / 4.62 pounds 2098 g / 20.6 N	N/A
1 mm	12.97 kg / 28.59 pounds 11 008 Gs	1.94 kg / 4.29 pounds 1945 g / 19.1 N	11.67 kg / 25.73 pounds ~0 Gs
2 mm	11.97 kg / 26.39 pounds 10 576 Gs	1.80 kg / 3.96 pounds 1795 g / 17.6 N	10.77 kg / 23.75 pounds ~0 Gs
3 mm	11.02 kg / 24.29 pounds 10 146 Gs	1.65 kg / 3.64 pounds 1652 g / 16.2 N	9.91 kg / 21.86 pounds ~0 Gs
5 mm	9.26 kg / 20.42 pounds 9 303 Gs	1.39 kg / 3.06 pounds 1389 g / 13.6 N	8.33 kg / 18.37 pounds ~0 Gs
10 mm	5.79 kg / 12.76 pounds 7 353 Gs	0.87 kg / 1.91 pounds 868 g / 8.5 N	5.21 kg / 11.48 pounds ~0 Gs
20 mm	2.10 kg / 4.63 pounds 4 432 Gs	0.32 kg / 0.70 pounds 315 g / 3.1 N	1.89 kg / 4.17 pounds ~0 Gs
50 mm	0.14 kg / 0.32 pounds 1 159 Gs	0.02 kg / 0.05 pounds 22 g / 0.2 N	0.13 kg / 0.29 pounds ~0 Gs
60 mm	0.07 kg / 0.16 pounds 811 Gs	0.01 kg / 0.02 pounds 11 g / 0.1 N	0.06 kg / 0.14 pounds ~0 Gs
70 mm	0.04 kg / 0.08 pounds 589 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.03 kg / 0.07 pounds ~0 Gs
80 mm	0.02 kg / 0.05 pounds 440 Gs	0.00 kg / 0.01 pounds 3 g / 0.0 N	0.02 kg / 0.04 pounds ~0 Gs
90 mm	0.01 kg / 0.03 pounds 338 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs
100 mm	0.01 kg / 0.02 pounds 265 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets interact from a significantly greater distance than a magnet and steel combination. Such a system of magnet-to-magnet produces a massive flux and a larger range of operation. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Remember that when connecting a pair of magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still large.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle between the magnets (due to field cancellation).
* Estimates refer to sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MP 25x5x27 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	18.0 cm
Hearing aid	10 Gs (1.0 mT)	14.0 cm
Mechanical watch	20 Gs (2.0 mT)	11.0 cm
Mobile device	40 Gs (4.0 mT)	8.5 cm
Car key	50 Gs (5.0 mT)	7.5 cm
Payment card	400 Gs (40.0 mT)	3.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Powerful magnet radiation poses a serious hazard to IT equipment as well as pacemakers. These NdFeB products produce a field that prevents correct functioning of sensitive medical devices. Remember: the unseen radiation acts through matter and glass. Increased vigilance must be taken by people with cochlear implants and drug dispensers. Also at risk are: mechanical watches, remotes, speakers, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MP 25x5x27 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	15.31 km/h (4.25 m/s)	0.86 J
30 mm	24.40 km/h (6.78 m/s)	2.19 J
50 mm	31.42 km/h (8.73 m/s)	3.63 J
100 mm	44.42 km/h (12.34 m/s)	7.26 J

Magnetic elements are very brittle – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when handling with large magnets.

Table 9: Corrosion resistance
MP 25x5x27 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MP 25x5x27 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 917 Mx	49.2 µWb
P_c Coefficient	1.40	High (Stable)

Total magnetic flux passing through the pole surface. Key data in coil applications as well as sensors. The P_c coefficient determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 25x5x27 / N38

Environment	Effective steel pull	Effect
Air (land)	18.51 kg	Standard
Water (riverbed)	21.19 kg (+2.68 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Sliding resistance

*Warning: On a vertical wall, the magnet holds merely approx. 20-30% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly 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) = 1.40

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical 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: 030192-2026

Measurement Calculator

Pulling force

Force in kg

Force in lbs

Magnetic Field

Tesla (T)

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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 25x5x27 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. 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 rubberized holders or additional protection with varnish.

The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

This model is characterized by dimensions Ø25x27 mm and a weight of 95.43 g. The key parameter here is the holding force amounting to approximately 18.51 kg (force ~181.54 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 5 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Advantages and disadvantages of rare earth magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

Their power is maintained, and after around ten years it drops only by ~1% (according to research),
Neodymium magnets remain remarkably resistant to magnetic field loss caused by magnetic disturbances,
A magnet with a smooth nickel surface looks better,
The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Considering the potential of free forming and adaptation to unique requirements, neodymium magnets can be manufactured in a variety of geometric configurations, which makes them more universal,
Versatile presence in electronics industry – they serve a role in HDD drives, drive modules, medical equipment, as well as complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
Limited ability of producing nuts in the magnet and complex shapes - recommended is casing - mounting mechanism.
Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these devices are able to be problematic in diagnostics medical when they are in the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Holding force characteristics

Highest magnetic holding force – what affects it?

The specified lifting capacity concerns the maximum value, recorded under optimal environment, namely:

on a base made of mild steel, perfectly concentrating the magnetic flux
whose transverse dimension reaches at least 10 mm
with a surface free of scratches
under conditions of gap-free contact (metal-to-metal)
during detachment in a direction perpendicular to the plane
at conditions approx. 20°C

Practical aspects of lifting capacity – factors

Real force impacted by specific conditions, mainly (from priority):

Distance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Angle of force application – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
Base massiveness – insufficiently thick steel does not accept the full field, causing part of the flux to be lost to the other side.
Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Additionally, even a small distance between the magnet and the plate reduces the holding force.

Safe handling of neodymium magnets

Electronic hazard

Avoid bringing magnets close to a wallet, computer, or TV. The magnetism can destroy these devices and erase data from cards.

GPS Danger

Navigation devices and mobile phones are highly sensitive to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Powerful field

Handle magnets with awareness. Their huge power can shock even professionals. Stay alert and do not underestimate their force.

Allergy Warning

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, cease working with magnets and use protective gear.

Serious injuries

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

This is not a toy

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

Shattering risk

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.

Fire warning

Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Heat warning

Avoid heat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Medical interference

Warning for patients: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to handle the magnets.

Caution! Details about risks in the article: Safety of working with magnets.

MP 25x5x27 / N38 - ring magnet

Physical properties - MP 25x5x27 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - data

Table 1: Static force (force vs gap) - power drop MP 25x5x27 / N38

Table 2: Sliding hold (vertical surface) MP 25x5x27 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MP 25x5x27 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 25x5x27 / N38

Table 5: Working in heat (stability) - thermal limit MP 25x5x27 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MP 25x5x27 / N38

Table 7: Safety (HSE) (implants) - warnings MP 25x5x27 / N38

Table 8: Collisions (cracking risk) - collision effects MP 25x5x27 / N38

Table 9: Corrosion resistance MP 25x5x27 / N38

Table 10: Electrical data (Pc) MP 25x5x27 / N38

Table 11: Underwater work (magnet fishing) MP 25x5x27 / N38

1. Sliding resistance

2. Efficiency vs thickness

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Field

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Advantages and disadvantages of rare earth magnets.

Advantages

Weaknesses

Holding force characteristics

Highest magnetic holding force – what affects it?

Practical aspects of lifting capacity – factors

Safe handling of neodymium magnets

Electronic hazard

GPS Danger

Powerful field

Allergy Warning

Serious injuries

This is not a toy

Shattering risk

Fire warning

Heat warning

Medical interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - power drop
MP 25x5x27 / N38

Table 2: Sliding hold (vertical surface)
MP 25x5x27 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MP 25x5x27 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 25x5x27 / N38

Table 5: Working in heat (stability) - thermal limit
MP 25x5x27 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MP 25x5x27 / N38

Table 7: Safety (HSE) (implants) - warnings
MP 25x5x27 / N38

Table 8: Collisions (cracking risk) - collision effects
MP 25x5x27 / N38

Table 9: Corrosion resistance
MP 25x5x27 / N38

Table 10: Electrical data (P_c)
MP 25x5x27 / N38

Table 11: Underwater work (magnet fishing)
MP 25x5x27 / N38