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MP 20x8x5 / 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 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

view properties »

3.80 ZŁ with VAT / pcs + price for transport

3.09 ZŁ net + 23% VAT / pcs

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Give us a call +48 22 499 98 98 otherwise let us know through request form the contact page.
Weight and appearance of neodymium magnets can be estimated using our magnetic mass calculator.

Orders placed before 14:00 will be shipped the same business day.

Technical specification 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 magnet - technical parameters

Presented information represent the direct effect of a physical analysis. Values are based on algorithms for the material Nd₂Fe₁₄B. Operational performance might slightly differ from theoretical values. Please consider these calculations as a reference point during assembly planning.

Table 1: Static pull force (pull vs gap) - characteristics
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	medium risk
1 mm	5321 Gs 532.1 mT	4.71 kg / 10.38 lbs 4707.4 g / 46.2 N	medium risk
2 mm	4736 Gs 473.6 mT	3.73 kg / 8.22 lbs 3729.5 g / 36.6 N	medium risk
3 mm	4184 Gs 418.4 mT	2.91 kg / 6.42 lbs 2910.0 g / 28.5 N	medium risk
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 decreases sharply per each millimeter of gap. Keep in mind that even a very thin break (e.g., contamination, varnish, veneer) strongly weakens the grip. Magnets operate optimally during direct contact; gap drastically cuts the power. See how quickly the load capacity fall, when the magnet does not touch flatly to the steel surface. When designing the arrangement, avoid redundant distances.

Table 2: Shear capacity (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 following data defines the theoretical shear load necessary to cause the shifting of the magnet down against a upright steel wall (assuming typical friction coefficient). This parameter is a function of the gap size between the magnet and the surface.

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 magnet on a upright plane (e.g., a fridge), it will maintain just approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient cause that magnets move down faster than they pop off the substrate. Planning a hanger? Consider that the sliding force is noticeably lower than the maximum static pull force. On a slippery surface, the magnet will slide down under a noticeably lighter load. Utilizing a rubberized layer can significantly raise the stability.

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 incapable of focus the entire magnetic field, which weakens actual performance of the magnet. If you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the holding will be smaller. To achieve the maximum of this neodymium's power, you need a suitably thick element of steel. The saturation phenomenon means that on thin elements (e.g., car bodies), the holder works worse. We advise picking the steel dimension 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

Classic neodymiums lose power past the thermal threshold. Watch out for overheating – high temperature can irreversibly damage this product. With every degree above norm, the neodymium's power briefly drops. Refrain from using this product close to heaters higher than its safe range. Ignoring the limit will result in destruction of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) may lose charge permanently sooner than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

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

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral 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 magnets attract each other from a wider radius than a neodymium and metal combination. Such a system of two magnets generates a stronger field and a wider radius of performance. Want to build a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the impact force is huge. The levitation is slightly lower than the connection force, but still significant.
*Flux density between like poles is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Results show sliding force of two identical magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
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
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

A strong magnetic field is a serious hazard to IT equipment as well as pacemakers. These NdFeB products generate a flux that prevents correct functioning of digital equipment. Remember: the invisible magnetic field acts through matter and glass. Special caution must be taken by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, remotes, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - warning
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

NdFeB products are delicate – 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 trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Use safety goggles when playing with large magnets.

Table 9: Anti-corrosion coating durability
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)

The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MP 20x8x5 / N38

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

Total magnetic flux passing through the magnet pole. Essential parameter when building generators and motors. The P_c coefficient determines 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!

The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Wall mount (shear)

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

2. Plate thickness effect

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

3. Thermal stability

*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.

Engineering data and GPSR

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%

Ecology and recycling (GPSR)

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

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

batch number/type

id: 030188-2026

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It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. 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 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 too much pressure 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.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for inside building use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 8 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 Ø20x5 mm and a weight of 9.9 g. The pulling force of this model is an impressive 5.82 kg, which translates to 57.06 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 8 mm.

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

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Benefits

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

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
They are extremely resistant to demagnetization induced by external field influence,
Thanks to the elegant finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an modern appearance,
Magnetic induction on the working layer of the magnet turns out to be exceptional,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
Thanks to the option of free shaping and customization to unique projects, magnetic components can be produced in a wide range of forms and dimensions, which makes them more universal,
Universal use in innovative solutions – they find application in HDD drives, electric drive systems, medical equipment, also complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in compact constructions

Cons

Disadvantages of NdFeB magnets:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 extremely resistant to heat
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
We suggest casing - magnetic holder, due to difficulties in creating nuts inside the magnet and complex shapes.
Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Maximum magnetic pulling force – what affects it?

The specified lifting capacity represents the peak performance, recorded under laboratory conditions, meaning:

on a base made of mild steel, perfectly concentrating the magnetic field
with a thickness minimum 10 mm
characterized by even structure
without the slightest clearance between the magnet and steel
during detachment in a direction vertical to the plane
at ambient temperature room level

Magnet lifting force in use – key factors

Holding efficiency is influenced by working environment parameters, including (from priority):

Gap between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Direction of force – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
Steel thickness – too thin steel causes magnetic saturation, causing part of the power to be wasted to the other side.
Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

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

Warnings

Permanent damage

Do not overheat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Health Danger

Individuals with a ICD must maintain an large gap from magnets. The magnetism can interfere with the operation of the implant.

GPS Danger

A strong magnetic field disrupts the functioning of magnetometers in phones and GPS navigation. Maintain magnets close to a device to avoid breaking the sensors.

Physical harm

Big blocks can smash fingers in a fraction of a second. Never place your hand between two strong magnets.

Handling rules

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.

Avoid contact if allergic

Studies show that nickel (the usual finish) is a common allergen. If you have an allergy, prevent direct skin contact and choose versions in plastic housing.

Material brittleness

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them cracking into shards.

Electronic devices

Very strong magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Adults only

Strictly keep magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are tragic.

Do not drill into magnets

Powder produced during machining of magnets is combustible. Do not drill into magnets unless you are an expert.

Danger! Looking for details? Read our article: Why are neodymium magnets dangerous?

MP 20x8x5 / N38 - ring magnet

Technical specification 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 magnet - technical parameters

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

Table 2: Shear capacity (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 (attraction) - forces in the system MP 20x8x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MP 20x8x5 / N38

Table 8: Impact energy (kinetic energy) - warning MP 20x8x5 / N38

Table 9: Anti-corrosion coating durability MP 20x8x5 / N38

Table 10: Electrical data (Flux) MP 20x8x5 / N38

Table 11: Submerged application MP 20x8x5 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Thermal stability

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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Cons

Lifting parameters

Maximum magnetic pulling force – what affects it?

Magnet lifting force in use – key factors

Warnings

Permanent damage

Health Danger

GPS Danger

Physical harm

Handling rules

Avoid contact if allergic

Material brittleness

Electronic devices

Adults only

Do not drill into magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Shear capacity (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 (attraction) - forces in the system
MP 20x8x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MP 20x8x5 / N38

Table 8: Impact energy (kinetic energy) - warning
MP 20x8x5 / N38

Table 9: Anti-corrosion coating durability
MP 20x8x5 / N38

Table 10: Electrical data (Flux)
MP 20x8x5 / N38

Table 11: Submerged application
MP 20x8x5 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.