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MP 20x10x5 / 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 030184

GTIN/EAN: 5906301812012

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

10 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

8.84 g

Magnetization Direction

↑ axial

Load capacity

5.20 kg / 50.97 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

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Technical parameters of the product - MP 20x10x5 / N38 - ring magnet

Specification / characteristics - MP 20x10x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030184
GTIN/EAN	5906301812012
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	20 mm [±0,1 mm]
internal diameter Ø	10 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	8.84 g
Magnetization Direction	↑ axial
Load capacity ~ ?	5.20 kg / 50.97 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x10x5 / 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 assembly - report

The following information constitute the result of a mathematical calculation. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Real-world performance might slightly differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - power drop
MP 20x10x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5917 Gs 591.7 mT	5.20 kg / 11.46 LBS 5200.0 g / 51.0 N	warning
1 mm	5321 Gs 532.1 mT	4.21 kg / 9.27 LBS 4205.9 g / 41.3 N	warning
2 mm	4736 Gs 473.6 mT	3.33 kg / 7.35 LBS 3332.2 g / 32.7 N	warning
3 mm	4184 Gs 418.4 mT	2.60 kg / 5.73 LBS 2600.0 g / 25.5 N	warning
5 mm	3216 Gs 321.6 mT	1.54 kg / 3.39 LBS 1536.2 g / 15.1 N	safe
10 mm	1650 Gs 165.0 mT	0.40 kg / 0.89 LBS 404.2 g / 4.0 N	safe
15 mm	907 Gs 90.7 mT	0.12 kg / 0.27 LBS 122.3 g / 1.2 N	safe
20 mm	544 Gs 54.4 mT	0.04 kg / 0.10 LBS 44.0 g / 0.4 N	safe
30 mm	240 Gs 24.0 mT	0.01 kg / 0.02 LBS 8.5 g / 0.1 N	safe
50 mm	75 Gs 7.5 mT	0.00 kg / 0.00 LBS 0.8 g / 0.0 N	safe

Pulling power drops drastically with every mm of spacing. Note that every additional insulation layer (e.g., contamination, paint, rust) significantly weakens the grip. Neodymiums operate most effectively at the point of direct contact; air break drastically cuts the force. Observe how flashily the parameters fall, when the product does not touch tightly to the metal substrate. When calculating the arrangement, eliminate unnecessary gaps.

Table 2: Vertical force (vertical surface)
MP 20x10x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.04 kg / 2.29 LBS 1040.0 g / 10.2 N
1 mm	Stal (~0.2)	0.84 kg / 1.86 LBS 842.0 g / 8.3 N
2 mm	Stal (~0.2)	0.67 kg / 1.47 LBS 666.0 g / 6.5 N
3 mm	Stal (~0.2)	0.52 kg / 1.15 LBS 520.0 g / 5.1 N
5 mm	Stal (~0.2)	0.31 kg / 0.68 LBS 308.0 g / 3.0 N
10 mm	Stal (~0.2)	0.08 kg / 0.18 LBS 80.0 g / 0.8 N
15 mm	Stal (~0.2)	0.02 kg / 0.05 LBS 24.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 8.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

The table below shows the estimated holding capacity required to start the sliding of the magnet down on a upright metal surface (assuming standard friction). This value is relative to the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MP 20x10x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.56 kg / 3.44 LBS 1560.0 g / 15.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.04 kg / 2.29 LBS 1040.0 g / 10.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.52 kg / 1.15 LBS 520.0 g / 5.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.60 kg / 5.73 LBS 2600.0 g / 25.5 N

When hanging a magnet on a upright wall (e.g., a board), it will maintain just approx. 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient mean that holders slip faster than they pop off the substrate. Designing a hanger? Note that the shear force is much weaker than the maximum static pull force. On a painted metal, the holder will slip down under a much lighter weight. Using a rubber pad can significantly increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MP 20x10x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.52 kg / 1.15 LBS 520.0 g / 5.1 N
1 mm	25%	1.30 kg / 2.87 LBS 1300.0 g / 12.8 N
2 mm	50%	2.60 kg / 5.73 LBS 2600.0 g / 25.5 N
3 mm	75%	3.90 kg / 8.60 LBS 3900.0 g / 38.3 N
5 mm	100%	5.20 kg / 11.46 LBS 5200.0 g / 51.0 N
10 mm	100%	5.20 kg / 11.46 LBS 5200.0 g / 51.0 N
11 mm	100%	5.20 kg / 11.46 LBS 5200.0 g / 51.0 N
12 mm	100%	5.20 kg / 11.46 LBS 5200.0 g / 51.0 N

A too thin steel is incapable of focus the full magnetic flux, which squanders power of the magnet. Should you mount a strong magnet to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this neodymium's power, you require a sufficiently solid backing of steel. The saturation effect causes that on delicate walls (e.g., thin profiles), the holder holds weaker. We advise picking the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 20x10x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	5.20 kg / 11.46 LBS 5200.0 g / 51.0 N	OK
40 °C	-2.2%	5.09 kg / 11.21 LBS 5085.6 g / 49.9 N	OK
60 °C	-4.4%	4.97 kg / 10.96 LBS 4971.2 g / 48.8 N	OK
80 °C	-6.6%	4.86 kg / 10.71 LBS 4856.8 g / 47.6 N
100 °C	-28.8%	3.70 kg / 8.16 LBS 3702.4 g / 36.3 N

Classic neodymiums lose strength after exceeding the maximum temperature. Watch out for overheating – excessive heat can irreversibly destroy this magnet. With increasing heat, the magnet's capacity briefly lowers. Refrain from using this magnet near heat sources higher than its operating temperature limit. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Important note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) may lose charge permanently at lower temperatures than long magnets. 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 20x10x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	54.03 kg / 119.11 LBS 6 121 Gs	8.10 kg / 17.87 LBS 8104 g / 79.5 N	N/A
1 mm	48.76 kg / 107.50 LBS 11 242 Gs	7.31 kg / 16.13 LBS 7314 g / 71.8 N	43.89 kg / 96.75 LBS ~0 Gs
2 mm	43.70 kg / 96.34 LBS 10 642 Gs	6.55 kg / 14.45 LBS 6555 g / 64.3 N	39.33 kg / 86.71 LBS ~0 Gs
3 mm	38.98 kg / 85.94 LBS 10 051 Gs	5.85 kg / 12.89 LBS 5847 g / 57.4 N	35.08 kg / 77.34 LBS ~0 Gs
5 mm	30.63 kg / 67.54 LBS 8 910 Gs	4.60 kg / 10.13 LBS 4595 g / 45.1 N	27.57 kg / 60.78 LBS ~0 Gs
10 mm	15.96 kg / 35.19 LBS 6 432 Gs	2.39 kg / 5.28 LBS 2394 g / 23.5 N	14.36 kg / 31.67 LBS ~0 Gs
20 mm	4.20 kg / 9.26 LBS 3 299 Gs	0.63 kg / 1.39 LBS 630 g / 6.2 N	3.78 kg / 8.33 LBS ~0 Gs
50 mm	0.19 kg / 0.42 LBS 702 Gs	0.03 kg / 0.06 LBS 29 g / 0.3 N	0.17 kg / 0.38 LBS ~0 Gs
60 mm	0.09 kg / 0.20 LBS 480 Gs	0.01 kg / 0.03 LBS 13 g / 0.1 N	0.08 kg / 0.18 LBS ~0 Gs
70 mm	0.05 kg / 0.10 LBS 342 Gs	0.01 kg / 0.01 LBS 7 g / 0.1 N	0.04 kg / 0.09 LBS ~0 Gs
80 mm	0.02 kg / 0.05 LBS 253 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs
90 mm	0.01 kg / 0.03 LBS 193 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.03 LBS ~0 Gs
100 mm	0.01 kg / 0.02 LBS 150 Gs	0.00 kg / 0.00 LBS 1 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel combination. The setup of magnet-to-magnet produces a massive flux and a larger range of performance. Designing a solid fastener? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the pinch force is massive. The levitation is marginally weaker than the attraction, but still significant.
*Flux density between like poles drops to ~0 Gs at the geometric center between the magnets (due to field cancellation).
Attention: Results show shear force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 20x10x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	14.5 cm
Hearing aid	10 Gs (1.0 mT)	11.5 cm
Mechanical watch	20 Gs (2.0 mT)	9.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.5 cm
Car key	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Extremely neodym field poses a serious hazard to electronic devices and medical implants. These magnets generate a field that disrupts operation of digital equipment. Remember: the unseen radiation passes through tissues and plastic. Exceptional care must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and screens. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MP 20x10x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.62 km/h (7.12 m/s)	0.22 J
30 mm	42.41 km/h (11.78 m/s)	0.61 J
50 mm	54.70 km/h (15.19 m/s)	1.02 J
100 mm	77.35 km/h (21.49 m/s)	2.04 J

Magnetic elements are very brittle – a violent impact against metal can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Kinetic force can cause material chips or dangerous crushing to skin. Hold the magnet firmly during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 20x10x5 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MP 20x10x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	16 116 Mx	161.2 µWb
P_c Coefficient	1.13	High (Stable)

Flux value passing through the pole surface. Key data in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 20x10x5 / N38

Environment	Effective steel pull	Effect
Air (land)	5.20 kg	Standard
Water (riverbed)	5.95 kg (+0.75 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.

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Shear force

*Warning: On a vertical wall, the magnet holds only ~20% of its max power.

2. Plate thickness effect

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Heat tolerance

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.13

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 and environmental data

Elemental analysis

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: 030184-2026

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The ring magnet with a hole MP 20x10x5 / 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 5.20 kg works great as a cabinet closure, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 20x10x5 / 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 too much pressure will cause the ring to crack. 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.

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 inside building 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. Always check that the screw head is not larger than the outer diameter of the magnet (20 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø20x5 mm and a weight of 8.84 g. The pulling force of this model is an impressive 5.20 kg, which translates to 50.97 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 10 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths as well as weaknesses of neodymium magnets.

Advantages

In addition to their long-term stability, neodymium magnets provide the following advantages:

They do not lose power, even over nearly ten years – the decrease in power is only ~1% (theoretically),
They have excellent resistance to weakening of magnetic properties due to external magnetic sources,
A magnet with a smooth gold surface has an effective appearance,
They show high magnetic induction at the operating surface, which affects their effectiveness,
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 custom creating and adjusting to atypical needs,
Versatile presence in modern industrial fields – they are used in mass storage devices, brushless drives, medical devices, as well as modern systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength 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
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
We suggest casing - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

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

The declared magnet strength refers to the limit force, obtained under ideal test conditions, namely:

with the application of a yoke made of special test steel, guaranteeing maximum field concentration
with a cross-section minimum 10 mm
characterized by smoothness
without any clearance between the magnet and steel
during detachment in a direction perpendicular to the plane
at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

During everyday use, the actual lifting capacity depends on many variables, listed from the most important:

Gap (betwixt the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
Plate thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be escaped into the air.
Steel type – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the load capacity.

Warnings

Electronic devices

Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.

Do not give to children

Product intended for adults. Tiny parts can be swallowed, causing serious injuries. Keep out of reach of kids and pets.

Dust explosion hazard

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Safe operation

Handle with care. Neodymium magnets act from a distance and connect with massive power, often faster than you can react.

Risk of cracking

Despite metallic appearance, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Thermal limits

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

Serious injuries

Danger of trauma: The attraction force is so great that it can cause blood blisters, crushing, and broken bones. Use thick gloves.

ICD Warning

Warning for patients: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Keep away from electronics

A powerful magnetic field disrupts the operation of magnetometers in phones and navigation systems. Maintain magnets close to a device to prevent damaging the sensors.

Nickel coating and allergies

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

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

MP 20x10x5 / N38 - ring magnet

Technical parameters of the product - MP 20x10x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the assembly - report

Table 1: Static pull force (force vs distance) - power drop MP 20x10x5 / N38

Table 2: Vertical force (vertical surface) MP 20x10x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MP 20x10x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 20x10x5 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MP 20x10x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MP 20x10x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MP 20x10x5 / N38

Table 8: Dynamics (cracking risk) - collision effects MP 20x10x5 / N38

Table 9: Anti-corrosion coating durability MP 20x10x5 / N38

Table 10: Electrical data (Flux) MP 20x10x5 / N38

Table 11: Underwater work (magnet fishing) MP 20x10x5 / N38

1. Shear force

2. Plate thickness effect

3. Heat tolerance

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

Elemental analysis

Environmental data

Magnet pull force

Field Strength

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MW 100x30 / N38 - cylindrical magnet

MP 41x15x10 / N38 - ring magnet

SM 25x325 [2xM8] / N52 - magnetic separator

SM 25x150 [2xM8] / N42 - magnetic separator

Strengths as well as weaknesses of neodymium magnets.

Advantages

Cons

Pull force analysis

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

What influences lifting capacity in practice

Warnings

Electronic devices

Do not give to children

Dust explosion hazard

Safe operation

Risk of cracking

Thermal limits

Serious injuries

ICD Warning

Keep away from electronics

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - power drop
MP 20x10x5 / N38

Table 2: Vertical force (vertical surface)
MP 20x10x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MP 20x10x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 20x10x5 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 20x10x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 20x10x5 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 20x10x5 / N38

Table 8: Dynamics (cracking risk) - collision effects
MP 20x10x5 / N38

Table 9: Anti-corrosion coating durability
MP 20x10x5 / N38

Table 10: Electrical data (Flux)
MP 20x10x5 / N38

Table 11: Underwater work (magnet fishing)
MP 20x10x5 / N38