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MP 20x8x5 / 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 030188

GTIN/EAN: 5906301812050

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

8 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

9.9 g

Magnetization Direction

↑ axial

Load capacity

5.82 kg / 57.06 N

Magnetic Induction

277.16 mT / 2772 Gs

Coating

[NiCuNi] Nickel

technical details »

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Technical parameters of the product - MP 20x8x5 / N38 - ring magnet

Specification / characteristics - MP 20x8x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030188
GTIN/EAN	5906301812050
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	8 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	9.9 g
Magnetization Direction	↑ axial
Load capacity ~ ?	5.82 kg / 57.06 N
Magnetic Induction ~ ?	277.16 mT / 2772 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x8x5 / 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 - report

These data are the outcome of a mathematical analysis. Results are based on models for the material Nd₂Fe₁₄B. Real-world performance may differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs gap) - interaction chart
MP 20x8x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5917 Gs 591.7 mT	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N	warning
1 mm	5321 Gs 532.1 mT	4.71 kg / 10.38 LBS 4707.4 g / 46.2 N	warning
2 mm	4736 Gs 473.6 mT	3.73 kg / 8.22 LBS 3729.5 g / 36.6 N	warning
3 mm	4184 Gs 418.4 mT	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N	warning
5 mm	3216 Gs 321.6 mT	1.72 kg / 3.79 LBS 1719.3 g / 16.9 N	weak grip
10 mm	1650 Gs 165.0 mT	0.45 kg / 1.00 LBS 452.4 g / 4.4 N	weak grip
15 mm	907 Gs 90.7 mT	0.14 kg / 0.30 LBS 136.8 g / 1.3 N	weak grip
20 mm	544 Gs 54.4 mT	0.05 kg / 0.11 LBS 49.2 g / 0.5 N	weak grip
30 mm	240 Gs 24.0 mT	0.01 kg / 0.02 LBS 9.6 g / 0.1 N	weak grip
50 mm	75 Gs 7.5 mT	0.00 kg / 0.00 LBS 0.9 g / 0.0 N	weak grip

Pulling power weakens sharply with every subsequent millimeter of spacing. Keep in mind that every additional insulation layer (e.g., dirt, varnish, veneer) strongly diminishes the holding power. Neodymiums hold strongest in perfect adhesion; air break drastically cuts the force. Notice how quickly the parameters plummet, when the magnet does not touch tightly to the metal substrate. When calculating the mounting, discard redundant distances.

Table 2: Vertical hold (vertical surface)
MP 20x8x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.16 kg / 2.57 LBS 1164.0 g / 11.4 N
1 mm	Stal (~0.2)	0.94 kg / 2.08 LBS 942.0 g / 9.2 N
2 mm	Stal (~0.2)	0.75 kg / 1.64 LBS 746.0 g / 7.3 N
3 mm	Stal (~0.2)	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
5 mm	Stal (~0.2)	0.34 kg / 0.76 LBS 344.0 g / 3.4 N
10 mm	Stal (~0.2)	0.09 kg / 0.20 LBS 90.0 g / 0.9 N
15 mm	Stal (~0.2)	0.03 kg / 0.06 LBS 28.0 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

The table below calculates the theoretical force required to initiate the shifting of the magnet downwards against a vertical metal surface (considering standard friction). This parameter is relative to the air gap between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MP 20x8x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.75 kg / 3.85 LBS 1746.0 g / 17.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.16 kg / 2.57 LBS 1164.0 g / 11.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N

When mounting a element on a vertical wall (e.g., a car body), it will maintain only approx. 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient mean that products slide down easier than they detach. Designing a vertical fastening? Consider that the shear force is noticeably lower than the maximum static pull force. On a painted metal, the holder will slip down under a noticeably lighter load. Using a rubber coating can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MP 20x8x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.58 kg / 1.28 LBS 582.0 g / 5.7 N
1 mm	25%	1.46 kg / 3.21 LBS 1455.0 g / 14.3 N
2 mm	50%	2.91 kg / 6.42 LBS 2910.0 g / 28.5 N
3 mm	75%	4.37 kg / 9.62 LBS 4365.0 g / 42.8 N
5 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N
10 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N
11 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N
12 mm	100%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N

A thin metal plate is not enough to conduct the full magnetic flux, which weakens actual performance of the holder. If you attach a powerful product to a thin surface, the field will pass right through and the holding will be smaller. To utilize the maximum of this magnet's potential, you require a sufficiently solid backing of metal. The saturation effect causes that on thin elements (e.g., appliance housings), the product holds weaker. We advise picking the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - resistance threshold
MP 20x8x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	5.82 kg / 12.83 LBS 5820.0 g / 57.1 N	OK
40 °C	-2.2%	5.69 kg / 12.55 LBS 5692.0 g / 55.8 N	OK
60 °C	-4.4%	5.56 kg / 12.27 LBS 5563.9 g / 54.6 N	OK
80 °C	-6.6%	5.44 kg / 11.98 LBS 5435.9 g / 53.3 N
100 °C	-28.8%	4.14 kg / 9.14 LBS 4143.8 g / 40.7 N

Ordinary NdFeB products change their properties parameters after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently damage this product. With every degree above norm, the magnet's force briefly drops. Avoid using this product near heat sources higher than its safe range. Too high temperature will result in permanent loss of magnetism.

*Technical advisory: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) may lose charge permanently at lower temperatures than long magnets. Warning indicator in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MP 20x8x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding 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 wider radius than a neodymium and metal setup. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Planning to create a solid fastener? Apply two magnets instead of a neodymium and a steel. Be careful that when bringing together two magnets, the impact force is huge. The repulsion force is marginally weaker than the attraction, but still significant.
*Field value in repulsion mode is approximately ~0 Gs at the midpoint of the gap (resulting from vector opposition).
* Results apply to sliding force of a pair of matching magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - warnings
MP 20x8x5 / 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
Phone / Smartphone	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

A strong magnetic field poses a large risk to IT equipment and 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 hearing aids and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MP 20x8x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	25.61 km/h (7.11 m/s)	0.25 J
30 mm	42.40 km/h (11.78 m/s)	0.69 J
50 mm	54.68 km/h (15.19 m/s)	1.14 J
100 mm	77.33 km/h (21.48 m/s)	2.28 J

Magnetic elements are delicate – a collision with steel can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or injury to fingers. Hold the magnet firmly during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MP 20x8x5 / 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 20x8x5 / N38

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

Flux value emitted by the pole surface. Essential parameter for generator designers as well as sensors. P_c value defines the magnet's operating point.

Table 11: Submerged application
MP 20x8x5 / N38

Environment	Effective steel pull	Effect
Air (land)	5.82 kg	Standard
Water (riverbed)	6.66 kg (+0.84 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Note: On a vertical wall, the magnet retains merely a fraction of its max power.

2. Steel saturation

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

3. Power loss vs temp

*For standard magnets, 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 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: 030188-2026

Measurement Calculator

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Force (N)

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The ring magnet with a hole MP 20x8x5 / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. This product with a force of 5.82 kg works great as a door latch, speaker holder, or mounting element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.

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. If you must use it outside, paint it with anti-corrosion paint after mounting.

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.

The presented product is a ring magnet with dimensions Ø20 mm (outer diameter) and height 5 mm. The key parameter here is the lifting capacity amounting to approximately 5.82 kg (force ~57.06 N). The mounting hole diameter is precisely 8 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). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages as well as disadvantages of neodymium magnets.

Advantages

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:

They do not lose magnetism, even over approximately ten years – the decrease in power is only ~1% (theoretically),
They are noted for resistance to demagnetization induced by external magnetic fields,
The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to look better,
Neodymium magnets achieve maximum magnetic induction on a contact point, which increases force concentration,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
Possibility of accurate machining and adapting to specific needs,
Fundamental importance in advanced technology sectors – they find application in mass storage devices, electric motors, advanced medical instruments, as well as industrial machines.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of NdFeB magnets:

At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Limited possibility of making nuts in the magnet and complicated forms - recommended is cover - magnet mounting.
Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these magnets can be problematic in diagnostics medical when they are in the body.
Due to expensive raw materials, their price is relatively high,

Holding force characteristics

Detachment force of the magnet in optimal conditions – what affects it?

Breakaway force is the result of a measurement for the most favorable conditions, assuming:

on a plate made of structural steel, optimally conducting the magnetic flux
possessing a thickness of minimum 10 mm to ensure full flux closure
with an ground contact surface
without any clearance between the magnet and steel
for force applied at a right angle (in the magnet axis)
at ambient temperature room level

Practical lifting capacity: influencing factors

Effective lifting capacity is affected by specific conditions, such as (from most important):

Air gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to varnish, rust or dirt).
Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
Thermal environment – heating the magnet causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate lowers the holding force.

Safe handling of neodymium magnets

Operating temperature

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Life threat

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Nickel coating and allergies

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation occurs, immediately stop working with magnets and use protective gear.

Fragile material

Neodymium magnets are ceramic materials, meaning they are very brittle. Impact of two magnets leads to them breaking into small pieces.

Physical harm

Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Flammability

Machining of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Compass and GPS

GPS units and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Data carriers

Avoid bringing magnets close to a purse, laptop, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Product not for children

Absolutely store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are fatal.

Conscious usage

Handle magnets consciously. Their powerful strength can shock even professionals. Stay alert and respect their force.

Safety First! Need more info? Check our post: Are neodymium magnets dangerous?

MP 20x8x5 / N38 - ring magnet

Technical parameters of the product - MP 20x8x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the product - report

Table 1: Static pull force (pull vs gap) - interaction chart MP 20x8x5 / N38

Table 2: Vertical hold (vertical surface) MP 20x8x5 / N38

Table 3: Wall mounting (sliding) - vertical pull MP 20x8x5 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 20x8x5 / N38

Table 5: Thermal resistance (stability) - resistance threshold MP 20x8x5 / N38

Table 6: Two magnets (repulsion) - forces in the system MP 20x8x5 / N38

Table 7: Hazards (electronics) - warnings MP 20x8x5 / N38

Table 8: Dynamics (cracking risk) - collision effects MP 20x8x5 / N38

Table 9: Corrosion resistance MP 20x8x5 / N38

Table 10: Construction data (Pc) MP 20x8x5 / N38

Table 11: Submerged application MP 20x8x5 / N38

1. Vertical hold

2. Steel saturation

3. Power loss vs temp

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

Chemical composition

Environmental data

Pulling force

Magnetic Induction

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Advantages as well as disadvantages of neodymium magnets.

Advantages

Weaknesses

Holding force characteristics

Detachment force of the magnet in optimal conditions – what affects it?

Practical lifting capacity: influencing factors

Safe handling of neodymium magnets

Operating temperature

Life threat

Nickel coating and allergies

Fragile material

Physical harm

Flammability

Compass and GPS

Data carriers

Product not for children

Conscious usage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MP 20x8x5 / N38

Table 2: Vertical hold (vertical surface)
MP 20x8x5 / N38

Table 3: Wall mounting (sliding) - vertical pull
MP 20x8x5 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 20x8x5 / N38

Table 5: Thermal resistance (stability) - resistance threshold
MP 20x8x5 / N38

Table 6: Two magnets (repulsion) - forces in the system
MP 20x8x5 / N38

Table 7: Hazards (electronics) - warnings
MP 20x8x5 / N38

Table 8: Dynamics (cracking risk) - collision effects
MP 20x8x5 / N38

Table 9: Corrosion resistance
MP 20x8x5 / N38

Table 10: Construction data (P_c)
MP 20x8x5 / N38

Table 11: Submerged application
MP 20x8x5 / N38