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MP 20x5x5 / N38 - ring magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN
Rating: 5

ring magnet

Catalog no 030186

GTIN/EAN: 5906301812036

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.04 g

Magnetization Direction

↑ axial

Load capacity

6.49 kg / 63.68 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

see technical data »

2.76 ZŁ with VAT / pcs + price for transport

2.24 ZŁ net + 23% VAT / pcs

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Technical of the product - MP 20x5x5 / N38 - ring magnet

Specification / characteristics - MP 20x5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030186
GTIN/EAN	5906301812036
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	5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	11.04 g
Magnetization Direction	↑ axial
Load capacity ~ ?	6.49 kg / 63.68 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x5x5 / 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 modeling of the product - data

Presented information constitute the direct effect of a engineering calculation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Actual conditions might slightly differ. Treat these calculations as a reference point when designing systems.

Table 1: Static force (pull vs gap) - characteristics
MP 20x5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5917 Gs 591.7 mT	6.49 kg / 14.31 LBS 6490.0 g / 63.7 N	strong
1 mm	5321 Gs 532.1 mT	5.25 kg / 11.57 LBS 5249.3 g / 51.5 N	strong
2 mm	4736 Gs 473.6 mT	4.16 kg / 9.17 LBS 4158.8 g / 40.8 N	strong
3 mm	4184 Gs 418.4 mT	3.25 kg / 7.15 LBS 3245.0 g / 31.8 N	strong
5 mm	3216 Gs 321.6 mT	1.92 kg / 4.23 LBS 1917.2 g / 18.8 N	safe
10 mm	1650 Gs 165.0 mT	0.50 kg / 1.11 LBS 504.5 g / 4.9 N	safe
15 mm	907 Gs 90.7 mT	0.15 kg / 0.34 LBS 152.6 g / 1.5 N	safe
20 mm	544 Gs 54.4 mT	0.05 kg / 0.12 LBS 54.9 g / 0.5 N	safe
30 mm	240 Gs 24.0 mT	0.01 kg / 0.02 LBS 10.7 g / 0.1 N	safe
50 mm	75 Gs 7.5 mT	0.00 kg / 0.00 LBS 1.0 g / 0.0 N	safe

Magnetic force drops sharply per each millimeter of gap. Remember that every additional insulation layer (e.g., contamination, varnish, veneer) significantly weakens the grip. Magnets hold strongest in perfect adhesion; air break nullifies the power. Observe how flashily the load capacity drop, when the product does not adhere directly to the metal substrate. When calculating the assembly, eliminate redundant distances.

Table 2: Slippage load (vertical surface)
MP 20x5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.30 kg / 2.86 LBS 1298.0 g / 12.7 N
1 mm	Stal (~0.2)	1.05 kg / 2.31 LBS 1050.0 g / 10.3 N
2 mm	Stal (~0.2)	0.83 kg / 1.83 LBS 832.0 g / 8.2 N
3 mm	Stal (~0.2)	0.65 kg / 1.43 LBS 650.0 g / 6.4 N
5 mm	Stal (~0.2)	0.38 kg / 0.85 LBS 384.0 g / 3.8 N
10 mm	Stal (~0.2)	0.10 kg / 0.22 LBS 100.0 g / 1.0 N
15 mm	Stal (~0.2)	0.03 kg / 0.07 LBS 30.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 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

This section shows the estimated shear load required to initiate the slippage of the magnet downwards along a upright steel plate (assuming typical friction). The holding force is relative to the gap size between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 20x5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.95 kg / 4.29 LBS 1947.0 g / 19.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.30 kg / 2.86 LBS 1298.0 g / 12.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.65 kg / 1.43 LBS 649.0 g / 6.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.25 kg / 7.15 LBS 3245.0 g / 31.8 N

When hanging a element on a vertical plane (e.g., a fridge), it will only hold just about 1/5 of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that products slide down easier than they pop off the substrate. Designing a wall mount? Consider that the shear force is much weaker than the perpendicular breakaway force. On a painted metal, the holder will give way down under a much lighter weight. Utilizing a rubberized coating can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MP 20x5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.65 kg / 1.43 LBS 649.0 g / 6.4 N
1 mm	25%	1.62 kg / 3.58 LBS 1622.5 g / 15.9 N
2 mm	50%	3.25 kg / 7.15 LBS 3245.0 g / 31.8 N
3 mm	75%	4.87 kg / 10.73 LBS 4867.5 g / 47.8 N
5 mm	100%	6.49 kg / 14.31 LBS 6490.0 g / 63.7 N
10 mm	100%	6.49 kg / 14.31 LBS 6490.0 g / 63.7 N
11 mm	100%	6.49 kg / 14.31 LBS 6490.0 g / 63.7 N
12 mm	100%	6.49 kg / 14.31 LBS 6490.0 g / 63.7 N

A too thin steel is not enough to absorb the entire magnetic field, which squanders power of the magnet. Should you mount a strong magnet to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To achieve the maximum of this neodymium's potential, you need a suitably thick backing of steel. The material oversaturation causes that on sheet metal structures (e.g., appliance housings), the product shows lower pull force. We advise picking the steel dimension based on the following data.

Table 5: Working in heat (stability) - thermal limit
MP 20x5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	6.49 kg / 14.31 LBS 6490.0 g / 63.7 N	OK
40 °C	-2.2%	6.35 kg / 13.99 LBS 6347.2 g / 62.3 N	OK
60 °C	-4.4%	6.20 kg / 13.68 LBS 6204.4 g / 60.9 N	OK
80 °C	-6.6%	6.06 kg / 13.36 LBS 6061.7 g / 59.5 N
100 °C	-28.8%	4.62 kg / 10.19 LBS 4620.9 g / 45.3 N

Standard neodymium magnets change their properties strength after exceeding the maximum temperature. Avoid high temperatures – heat can irreversibly destroy this magnet. As the temperature rises, the neodymium's force briefly lowers. Do not use this magnet close to ovens higher than its safe range. Ignoring the limit will lead to permanent loss of magnetic properties.

*Important note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) risk losing magnetic properties under lower heat stress than taller cylinders. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 20x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (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 magnetic products interact from a wider radius than a neodymium and metal combination. The setup of magnet-to-magnet generates a stronger field and a further horizon of performance. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when attracting two neodymiums, the pinch force is extreme. The repulsion force is a bit weaker than the connection force, but still large.
*Flux density between like poles reaches ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Important: Calculations apply to shear force of two same magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MP 20x5x5 / 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
Timepiece	20 Gs (2.0 mT)	9.0 cm
Mobile device	40 Gs (4.0 mT)	6.5 cm
Remote	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

Powerful magnet radiation poses a serious hazard to electronics as well as medical implants. These neodymiums produce a field that destroys function of sensitive medical devices. Notice: the unseen radiation passes through tissues and plastic. Increased vigilance must be exercised by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, car keys, speakers, and displays. Avoid contact with magnetic cards, HDD media, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MP 20x5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.61 km/h (7.11 m/s)	0.28 J
30 mm	42.40 km/h (11.78 m/s)	0.77 J
50 mm	54.68 km/h (15.19 m/s)	1.27 J
100 mm	77.33 km/h (21.48 m/s)	2.55 J

Magnetic elements are very brittle – a collision with steel can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Impact energy can cause material chips or injury to fingers. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed ends with a crack of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 20x5x5 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (P_c)
MP 20x5x5 / 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 magnet pole. Key data for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Hydrostatics and buoyancy
MP 20x5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	6.49 kg	Standard
Water (riverbed)	7.43 kg (+0.94 kg buoyancy gain)	+14.5%

Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

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

1. Vertical hold

*Warning: On a vertical surface, the magnet retains only a fraction of its perpendicular strength.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) drastically 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) = 1.13

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

Chemical composition

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 030186-2026

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The ring-shaped magnet MP 20x5x5 / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 6.49 kg works great as a door latch, speaker holder, or mounting element in devices.

This is a crucial issue when working with model MP 20x5x5 / 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. 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 is not sufficient for rain. 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. 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 (20 mm), so it doesn't protrude beyond the outline.

This model is characterized by dimensions Ø20x5 mm and a weight of 11.04 g. The pulling force of this model is an impressive 6.49 kg, which translates to 63.68 N in newtons. The mounting hole diameter is precisely 5 mm.

The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros and cons of Nd₂Fe₁₄B magnets.

Strengths

Apart from their strong magnetic energy, neodymium magnets have these key benefits:

They do not lose power, even over approximately ten years – the drop in lifting capacity is only ~1% (theoretically),
Magnets perfectly resist against loss of magnetization caused by foreign field sources,
In other words, due to the shiny layer of nickel, the element becomes visually attractive,
They are known for high magnetic induction at the operating surface, which improves attraction properties,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
Possibility of detailed forming as well as modifying to defined applications,
Fundamental importance in modern industrial fields – they find application in mass storage devices, brushless drives, precision medical tools, also modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in compact constructions

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.
When exposed to high temperature, neodymium magnets suffer a drop in strength. 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
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in realizing nuts and complicated forms in magnets, we propose using cover - magnetic holder.
Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The lifting capacity listed is a result of laboratory testing executed under specific, ideal conditions:

using a sheet made of high-permeability steel, serving as a ideal flux conductor
with a thickness of at least 10 mm
characterized by even structure
without the slightest clearance between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at room temperature

Determinants of lifting force in real conditions

In practice, the actual holding force depends on several key aspects, presented from the most important:

Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Load vector – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
Steel thickness – too thin sheet does not close the flux, causing part of the power to be lost to the other side.
Plate material – mild steel attracts best. Higher carbon content decrease magnetic permeability and lifting capacity.
Smoothness – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet and the plate lowers the holding force.

Safe handling of neodymium magnets

Crushing force

Risk of injury: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.

Protective goggles

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.

Safe distance

Avoid bringing magnets close to a wallet, computer, or TV. The magnetic field can destroy these devices and wipe information from cards.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Power loss in heat

Regular neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Flammability

Fire hazard: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.

Compass and GPS

A powerful magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Keep magnets close to a smartphone to avoid damaging the sensors.

Safe operation

Handle magnets consciously. Their powerful strength can shock even experienced users. Plan your moves and respect their force.

Swallowing risk

These products are not suitable for play. Accidental ingestion of a few magnets may result in them pinching intestinal walls, which poses a critical condition and requires immediate surgery.

Nickel coating and allergies

It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands or select versions in plastic housing.

Security! More info about risks in the article: Magnet Safety Guide.

MP 20x5x5 / N38 - ring magnet

Technical of the product - MP 20x5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - data

Table 1: Static force (pull vs gap) - characteristics MP 20x5x5 / N38

Table 2: Slippage load (vertical surface) MP 20x5x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MP 20x5x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 20x5x5 / N38

Table 5: Working in heat (stability) - thermal limit MP 20x5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MP 20x5x5 / N38

Table 7: Protective zones (implants) - precautionary measures MP 20x5x5 / N38

Table 8: Collisions (cracking risk) - warning MP 20x5x5 / N38

Table 9: Anti-corrosion coating durability MP 20x5x5 / N38

Table 10: Construction data (Pc) MP 20x5x5 / N38

Table 11: Hydrostatics and buoyancy MP 20x5x5 / N38

1. Vertical hold

2. Steel thickness impact

3. Temperature resistance

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

Chemical composition

Environmental data

Magnet pull force

Magnetic Field

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Pros and cons of Nd2Fe14B magnets.

Strengths

Weaknesses

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Determinants of lifting force in real conditions

Safe handling of neodymium magnets

Crushing force

Protective goggles

Safe distance

Danger to pacemakers

Power loss in heat

Flammability

Compass and GPS

Safe operation

Swallowing risk

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MP 20x5x5 / N38

Table 2: Slippage load (vertical surface)
MP 20x5x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 20x5x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 20x5x5 / N38

Table 5: Working in heat (stability) - thermal limit
MP 20x5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 20x5x5 / N38

Table 7: Protective zones (implants) - precautionary measures
MP 20x5x5 / N38

Table 8: Collisions (cracking risk) - warning
MP 20x5x5 / N38

Table 9: Anti-corrosion coating durability
MP 20x5x5 / N38

Table 10: Construction data (P_c)
MP 20x5x5 / N38

Table 11: Hydrostatics and buoyancy
MP 20x5x5 / N38

Pros and cons of Nd₂Fe₁₄B magnets.