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MP 20x5x27 / 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 030185

GTIN/EAN: 5906301812029

5.00

Diameter

20 mm [±0,1 mm]

internal diameter Ø

5 mm [±0,1 mm]

Height

27 mm [±0,1 mm]

Weight

59.64 g

Magnetization Direction

↑ axial

Load capacity

10.36 kg / 101.60 N

Magnetic Induction

581.04 mT / 5810 Gs

Coating

[NiCuNi] Nickel

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Technical data of the product - MP 20x5x27 / N38 - ring magnet

Specification / characteristics - MP 20x5x27 / N38 - ring magnet

properties

properties	values
Cat. no.	030185
GTIN/EAN	5906301812029
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	27 mm [±0,1 mm]
Weight	59.64 g
Magnetization Direction	↑ axial
Load capacity ~ ?	10.36 kg / 101.60 N
Magnetic Induction ~ ?	581.04 mT / 5810 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x5x27 / 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 product - report

These data are the result of a mathematical calculation. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Operational performance may differ from theoretical values. Please consider these data as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - characteristics
MP 20x5x27 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5716 Gs 571.6 mT	10.36 kg / 22.84 LBS 10360.0 g / 101.6 N	dangerous!
1 mm	5288 Gs 528.8 mT	8.87 kg / 19.55 LBS 8865.5 g / 87.0 N	warning
2 mm	4861 Gs 486.1 mT	7.49 kg / 16.51 LBS 7491.0 g / 73.5 N	warning
3 mm	4446 Gs 444.6 mT	6.27 kg / 13.82 LBS 6267.5 g / 61.5 N	warning
5 mm	3677 Gs 367.7 mT	4.29 kg / 9.45 LBS 4285.9 g / 42.0 N	warning
10 mm	2216 Gs 221.6 mT	1.56 kg / 3.43 LBS 1557.1 g / 15.3 N	safe
15 mm	1354 Gs 135.4 mT	0.58 kg / 1.28 LBS 580.9 g / 5.7 N	safe
20 mm	864 Gs 86.4 mT	0.24 kg / 0.52 LBS 236.9 g / 2.3 N	safe
30 mm	405 Gs 40.5 mT	0.05 kg / 0.11 LBS 52.1 g / 0.5 N	safe
50 mm	133 Gs 13.3 mT	0.01 kg / 0.01 LBS 5.6 g / 0.1 N	safe

Grip strength drops sharply per each millimeter of distance. Remember that even a very thin break (e.g., dirt, varnish, dust) strongly weakens the grip. Neodymiums hold optimally at the point of direct contact; gap drastically cuts the power. See how flashily the load capacity fall, when the magnet does not adhere directly to the steel surface. When planning the arrangement, avoid additional spacers.

Table 2: Vertical force (vertical surface)
MP 20x5x27 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.07 kg / 4.57 LBS 2072.0 g / 20.3 N
1 mm	Stal (~0.2)	1.77 kg / 3.91 LBS 1774.0 g / 17.4 N
2 mm	Stal (~0.2)	1.50 kg / 3.30 LBS 1498.0 g / 14.7 N
3 mm	Stal (~0.2)	1.25 kg / 2.76 LBS 1254.0 g / 12.3 N
5 mm	Stal (~0.2)	0.86 kg / 1.89 LBS 858.0 g / 8.4 N
10 mm	Stal (~0.2)	0.31 kg / 0.69 LBS 312.0 g / 3.1 N
15 mm	Stal (~0.2)	0.12 kg / 0.26 LBS 116.0 g / 1.1 N
20 mm	Stal (~0.2)	0.05 kg / 0.11 LBS 48.0 g / 0.5 N
30 mm	Stal (~0.2)	0.01 kg / 0.02 LBS 10.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The table below shows the approximate shear load needed to initiate the downward movement of the magnet down along a vertical metal surface (assuming standard friction coefficient). This parameter depends on the air gap between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 20x5x27 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.11 kg / 6.85 LBS 3108.0 g / 30.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.07 kg / 4.57 LBS 2072.0 g / 20.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.04 kg / 2.28 LBS 1036.0 g / 10.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.18 kg / 11.42 LBS 5180.0 g / 50.8 N

When mounting a holder on a vertical wall (e.g., a board), it will only hold just approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip cause that products slip easier than they pop off the substrate. Planning a wall mount? Note that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the holder will give way down under a noticeably lighter load. Using a rubber coating can significantly raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MP 20x5x27 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.52 kg / 1.14 LBS 518.0 g / 5.1 N
1 mm	13%	1.30 kg / 2.85 LBS 1295.0 g / 12.7 N
2 mm	25%	2.59 kg / 5.71 LBS 2590.0 g / 25.4 N
3 mm	38%	3.89 kg / 8.56 LBS 3885.0 g / 38.1 N
5 mm	63%	6.48 kg / 14.27 LBS 6475.0 g / 63.5 N
10 mm	100%	10.36 kg / 22.84 LBS 10360.0 g / 101.6 N
11 mm	100%	10.36 kg / 22.84 LBS 10360.0 g / 101.6 N
12 mm	100%	10.36 kg / 22.84 LBS 10360.0 g / 101.6 N

A thin sheet is incapable of focus the entire magnetic field, which wastes potential of the holder. If you mount a strong magnet to a thin surface, the field will pass right through and the pull force will drop sharply. To utilize 100% of this magnet's potential, you require a sufficiently solid backing of steel. The material oversaturation means that on thin elements (e.g., car bodies), the magnet shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - power drop
MP 20x5x27 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	10.36 kg / 22.84 LBS 10360.0 g / 101.6 N	OK
40 °C	-2.2%	10.13 kg / 22.34 LBS 10132.1 g / 99.4 N	OK
60 °C	-4.4%	9.90 kg / 21.83 LBS 9904.2 g / 97.2 N	OK
80 °C	-6.6%	9.68 kg / 21.33 LBS 9676.2 g / 94.9 N
100 °C	-28.8%	7.38 kg / 16.26 LBS 7376.3 g / 72.4 N

Classic neodymiums change their properties strength after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly destroy this product. With every degree above norm, the neodymium's capacity briefly lowers. Do not use this product near heat sources exceeding its working range. Exceeding the critical threshold will cause destruction of magnetic properties.

*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Thin magnets (pancake types) may lose charge permanently sooner than taller cylinders. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - forces in the system
MP 20x5x27 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	44.24 kg / 97.54 LBS 6 064 Gs	6.64 kg / 14.63 LBS 6636 g / 65.1 N	N/A
1 mm	41.02 kg / 90.43 LBS 11 008 Gs	6.15 kg / 13.56 LBS 6153 g / 60.4 N	36.92 kg / 81.39 LBS ~0 Gs
2 mm	37.86 kg / 83.47 LBS 10 576 Gs	5.68 kg / 12.52 LBS 5679 g / 55.7 N	34.07 kg / 75.12 LBS ~0 Gs
3 mm	34.85 kg / 76.83 LBS 10 146 Gs	5.23 kg / 11.52 LBS 5227 g / 51.3 N	31.36 kg / 69.14 LBS ~0 Gs
5 mm	29.30 kg / 64.58 LBS 9 303 Gs	4.39 kg / 9.69 LBS 4394 g / 43.1 N	26.37 kg / 58.13 LBS ~0 Gs
10 mm	18.30 kg / 40.35 LBS 7 353 Gs	2.75 kg / 6.05 LBS 2745 g / 26.9 N	16.47 kg / 36.32 LBS ~0 Gs
20 mm	6.65 kg / 14.66 LBS 4 432 Gs	1.00 kg / 2.20 LBS 997 g / 9.8 N	5.98 kg / 13.19 LBS ~0 Gs
50 mm	0.45 kg / 1.00 LBS 1 159 Gs	0.07 kg / 0.15 LBS 68 g / 0.7 N	0.41 kg / 0.90 LBS ~0 Gs
60 mm	0.22 kg / 0.49 LBS 811 Gs	0.03 kg / 0.07 LBS 33 g / 0.3 N	0.20 kg / 0.44 LBS ~0 Gs
70 mm	0.12 kg / 0.26 LBS 589 Gs	0.02 kg / 0.04 LBS 18 g / 0.2 N	0.11 kg / 0.23 LBS ~0 Gs
80 mm	0.07 kg / 0.14 LBS 440 Gs	0.01 kg / 0.02 LBS 10 g / 0.1 N	0.06 kg / 0.13 LBS ~0 Gs
90 mm	0.04 kg / 0.09 LBS 338 Gs	0.01 kg / 0.01 LBS 6 g / 0.1 N	0.03 kg / 0.08 LBS ~0 Gs
100 mm	0.02 kg / 0.05 LBS 265 Gs	0.00 kg / 0.01 LBS 4 g / 0.0 N	0.02 kg / 0.05 LBS ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a neodymium and metal setup. Such a system of magnet-to-magnet creates a more powerful interaction and a larger range of action. Designing a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Remember that when bringing together two magnets, the pinch force is extreme. The repulsion force is marginally weaker than the connection force, but still impressive.
*Field value in repulsion mode reaches ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Attention: Figures show sliding force of a pair of identical magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - precautionary measures
MP 20x5x27 / 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

A strong magnetic field is a serious hazard to electronic devices as well as pacemakers. These magnets produce a field that disrupts operation of digital equipment. Notice: the invisible magnetic field penetrates the body and glass. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Also at risk are: automatic timepieces, remotes, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MP 20x5x27 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	14.49 km/h (4.02 m/s)	0.48 J
30 mm	23.09 km/h (6.42 m/s)	1.23 J
50 mm	29.73 km/h (8.26 m/s)	2.03 J
100 mm	42.03 km/h (11.68 m/s)	4.07 J

Neodymium magnets are prone to chipping – a strong collision with metal risks their cracking. Watch the impact speed – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A collision at high speed means shattering of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Corrosion resistance
MP 20x5x27 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MP 20x5x27 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	14 314 Mx	143.1 µWb
P_c Coefficient	1.16	High (Stable)

Total magnetic flux emitted by the magnet pole. Essential parameter for generator designers as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 20x5x27 / N38

Environment	Effective steel pull	Effect
Air (land)	10.36 kg	Standard
Water (riverbed)	11.86 kg (+1.50 kg buoyancy gain)	+14.5%

Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Shear force

*Caution: On a vertical surface, the magnet holds merely a fraction of its perpendicular strength.

2. Steel thickness impact

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

3. Heat tolerance

*For standard magnets, 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) = 1.16

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: 030185-2026

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The ring magnet with a hole MP 20x5x27 / 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. 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 20x5x27 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable 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.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 5 mm fits this model. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Aesthetic mounting requires selecting the appropriate head size.

This model is characterized by dimensions Ø20x27 mm and a weight of 59.64 g. The key parameter here is the holding force amounting to approximately 10.36 kg (force ~101.60 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 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). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros as well as cons of neodymium magnets.

Benefits

Besides their remarkable pulling force, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
They show high resistance to demagnetization induced by external magnetic fields,
In other words, due to the shiny layer of gold, the element is aesthetically pleasing,
Magnetic induction on the working part of the magnet is impressive,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Thanks to freedom in constructing and the capacity to customize to unusual requirements,
Wide application in high-tech industry – they find application in magnetic memories, electric drive systems, diagnostic systems, also modern systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Limitations

What to avoid - cons of neodymium magnets and ways of using them

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as 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
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
Limited possibility of producing threads in the magnet and complicated shapes - preferred is a housing - magnet mounting.
Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Additionally, small components of these products can disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

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

The load parameter shown represents the limit force, recorded under laboratory conditions, meaning:

on a base made of mild steel, perfectly concentrating the magnetic flux
with a cross-section minimum 10 mm
characterized by smoothness
with direct contact (no coatings)
during detachment in a direction perpendicular to the mounting surface
in temp. approx. 20°C

What influences lifting capacity in practice

Bear in mind that the working load may be lower influenced by the following factors, in order of importance:

Clearance – existence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Base massiveness – insufficiently thick sheet does not close the flux, causing part of the flux to be escaped to the other side.
Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
Temperature – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, however under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.

Safe handling of neodymium magnets

Caution required

Use magnets with awareness. Their immense force can surprise even professionals. Plan your moves and respect their power.

Serious injuries

Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Be careful!

Maximum temperature

Do not overheat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Beware of splinters

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

Machining danger

Mechanical processing of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Sensitization to coating

It is widely known that nickel (the usual finish) is a common allergen. For allergy sufferers, prevent direct skin contact and choose coated magnets.

Life threat

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

Data carriers

Very strong magnetic fields can erase data on credit cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.

No play value

Adult use only. Small elements pose a choking risk, leading to severe trauma. Keep out of reach of kids and pets.

GPS and phone interference

Note: rare earth magnets generate a field that confuses precision electronics. Keep a safe distance from your phone, device, and GPS.

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

MP 20x5x27 / N38 - ring magnet

Technical data of the product - MP 20x5x27 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - report

Table 1: Static force (pull vs gap) - characteristics MP 20x5x27 / N38

Table 2: Vertical force (vertical surface) MP 20x5x27 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MP 20x5x27 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MP 20x5x27 / N38

Table 5: Thermal stability (stability) - power drop MP 20x5x27 / N38

Table 6: Two magnets (repulsion) - forces in the system MP 20x5x27 / N38

Table 7: Hazards (electronics) - precautionary measures MP 20x5x27 / N38

Table 8: Impact energy (kinetic energy) - warning MP 20x5x27 / N38

Table 9: Corrosion resistance MP 20x5x27 / N38

Table 10: Electrical data (Pc) MP 20x5x27 / N38

Table 11: Underwater work (magnet fishing) MP 20x5x27 / N38

1. Shear force

2. Steel thickness impact

3. Heat tolerance

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

Chemical composition

Environmental data

Pulling force

Magnetic Field

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Pros as well as cons of neodymium magnets.

Benefits

Limitations

Pull force analysis

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

What influences lifting capacity in practice

Safe handling of neodymium magnets

Caution required

Serious injuries

Maximum temperature

Beware of splinters

Machining danger

Sensitization to coating

Life threat

Data carriers

No play value

GPS and phone interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MP 20x5x27 / N38

Table 2: Vertical force (vertical surface)
MP 20x5x27 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MP 20x5x27 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MP 20x5x27 / N38

Table 5: Thermal stability (stability) - power drop
MP 20x5x27 / N38

Table 6: Two magnets (repulsion) - forces in the system
MP 20x5x27 / N38

Table 7: Hazards (electronics) - precautionary measures
MP 20x5x27 / N38

Table 8: Impact energy (kinetic energy) - warning
MP 20x5x27 / N38

Table 9: Corrosion resistance
MP 20x5x27 / N38

Table 10: Electrical data (P_c)
MP 20x5x27 / N38

Table 11: Underwater work (magnet fishing)
MP 20x5x27 / N38