Product available Ships tomorrow

MP 20x8x6 / 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

ring magnet

Catalog no 030189

GTIN/EAN: 5906301812067

5.00

Load capacity 7.22 kg / 70.81 N Magnetic Induction 318.85 mT / 3188 Gs

Diameter: 20 mm [±0,1 mm]
internal diameter Ø: 8 mm [±0,1 mm]
Height: 6 mm [±0,1 mm]
Weight: 11.88 g
Magnetization Direction: ↑ axial
Coating: [NiCuNi] Nickel

view properties »

5.17 zł with VAT / pcs + price for transport

4.20 zł net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

4.20 ZŁ

5.17 ZŁ

price from 150 pcs

3.95 ZŁ

4.86 ZŁ

price from 600 pcs

3.70 ZŁ

4.55 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator

Want to negotiate?

Give us a call +48 888 99 98 98 if you prefer drop us a message using our online form the contact form page.
Lifting power as well as appearance of magnetic components can be verified on our modular calculator.

Orders submitted before 14:00 will be dispatched today!

Technical specification of the product - MP 20x8x6 / N38 - ring magnet

Specification / characteristics - MP 20x8x6 / N38 - ring magnet

properties

properties	values
Cat. no.	030189
GTIN/EAN	5906301812067
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	6 mm [±0,1 mm]
Weight	11.88 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.22 kg / 70.81 N
Magnetic Induction ~ ?	318.85 mT / 3188 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 20x8x6 / 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

Engineering modeling of the magnet - data

These values are the result of a physical simulation. Values are based on algorithms for the material Nd₂Fe₁₄B. Real-world performance might slightly deviate from the simulation results. Please consider these data as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs distance) - characteristics
MP 20x8x6 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5917 Gs 591.7 mT	7.22 kg / 15.92 pounds 7220.0 g / 70.8 N	strong
1 mm	5321 Gs 532.1 mT	5.84 kg / 12.87 pounds 5839.8 g / 57.3 N	strong
2 mm	4736 Gs 473.6 mT	4.63 kg / 10.20 pounds 4626.6 g / 45.4 N	strong
3 mm	4184 Gs 418.4 mT	3.61 kg / 7.96 pounds 3610.0 g / 35.4 N	strong
5 mm	3216 Gs 321.6 mT	2.13 kg / 4.70 pounds 2132.9 g / 20.9 N	strong
10 mm	1650 Gs 165.0 mT	0.56 kg / 1.24 pounds 561.3 g / 5.5 N	weak grip
15 mm	907 Gs 90.7 mT	0.17 kg / 0.37 pounds 169.7 g / 1.7 N	weak grip
20 mm	544 Gs 54.4 mT	0.06 kg / 0.13 pounds 61.1 g / 0.6 N	weak grip
30 mm	240 Gs 24.0 mT	0.01 kg / 0.03 pounds 11.9 g / 0.1 N	weak grip
50 mm	75 Gs 7.5 mT	0.00 kg / 0.00 pounds 1.2 g / 0.0 N	weak grip

Pulling power decreases drastically with every subsequent millimeter of gap. Keep in mind that every additional insulation layer (e.g., contamination, varnish, rust) strongly weakens the grip. Magnetic products operate most effectively in perfect adhesion; air break weakens the power. Notice how flashily the pull force drop, when the product does not touch directly to the metal substrate. When designing the arrangement, avoid additional spacers.

Table 2: Shear capacity (vertical surface)
MP 20x8x6 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.44 kg / 3.18 pounds 1444.0 g / 14.2 N
1 mm	Stal (~0.2)	1.17 kg / 2.57 pounds 1168.0 g / 11.5 N
2 mm	Stal (~0.2)	0.93 kg / 2.04 pounds 926.0 g / 9.1 N
3 mm	Stal (~0.2)	0.72 kg / 1.59 pounds 722.0 g / 7.1 N
5 mm	Stal (~0.2)	0.43 kg / 0.94 pounds 426.0 g / 4.2 N
10 mm	Stal (~0.2)	0.11 kg / 0.25 pounds 112.0 g / 1.1 N
15 mm	Stal (~0.2)	0.03 kg / 0.07 pounds 34.0 g / 0.3 N
20 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section shows the theoretical holding capacity sufficient to cause the shifting of the magnet downwards against a vertical metal surface (assuming standard friction coefficient). The holding force varies with the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MP 20x8x6 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.17 kg / 4.78 pounds 2166.0 g / 21.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.44 kg / 3.18 pounds 1444.0 g / 14.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.72 kg / 1.59 pounds 722.0 g / 7.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.61 kg / 7.96 pounds 3610.0 g / 35.4 N

When hanging a element on a upright plane (e.g., a board), it will only hold only about 20%-30% of its maximum pull force. Gravitational force as well as a weak degree of grip cause that holders slip easier than they detach. Want to create a vertical fastening? Remember that the shear force is noticeably lower than the maximum static pull force. On a slippery surface, the element will slip down under a noticeably lighter weight. Utilizing a rubberized coating can effectively improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MP 20x8x6 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.72 kg / 1.59 pounds 722.0 g / 7.1 N
1 mm	25%	1.81 kg / 3.98 pounds 1805.0 g / 17.7 N
2 mm	50%	3.61 kg / 7.96 pounds 3610.0 g / 35.4 N
3 mm	75%	5.42 kg / 11.94 pounds 5415.0 g / 53.1 N
5 mm	100%	7.22 kg / 15.92 pounds 7220.0 g / 70.8 N
10 mm	100%	7.22 kg / 15.92 pounds 7220.0 g / 70.8 N
11 mm	100%	7.22 kg / 15.92 pounds 7220.0 g / 70.8 N
12 mm	100%	7.22 kg / 15.92 pounds 7220.0 g / 70.8 N

A thin sheet is unable to absorb the full magnetic flux, which squanders power of the holder. If you install a neodymium to a too thin substrate, the field will pass right through and the attraction force will be weaker. To utilize the maximum of this neodymium's potential, you require a sufficiently solid backing of metal. The saturation phenomenon means that on sheet metal structures (e.g., car bodies), the holder works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 20x8x6 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.22 kg / 15.92 pounds 7220.0 g / 70.8 N	OK
40 °C	-2.2%	7.06 kg / 15.57 pounds 7061.2 g / 69.3 N	OK
60 °C	-4.4%	6.90 kg / 15.22 pounds 6902.3 g / 67.7 N	OK
80 °C	-6.6%	6.74 kg / 14.87 pounds 6743.5 g / 66.2 N
100 °C	-28.8%	5.14 kg / 11.33 pounds 5140.6 g / 50.4 N

Standard neodymium magnets lose parameters after exceeding the maximum temperature. Protect against heat – heat can permanently damage this product. As the temperature rises, the magnet's power momentarily decreases. Avoid using this magnet in hot environments exceeding its operating temperature limit. Too high temperature will result in destruction of magnetism.

*Engineering note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) may lose charge permanently at lower temperatures than taller cylinders. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 20x8x6 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	52.44 kg / 115.62 pounds 6 121 Gs	7.87 kg / 17.34 pounds 7867 g / 77.2 N	N/A
1 mm	47.33 kg / 104.35 pounds 11 242 Gs	7.10 kg / 15.65 pounds 7100 g / 69.6 N	42.60 kg / 93.91 pounds ~0 Gs
2 mm	42.42 kg / 93.52 pounds 10 642 Gs	6.36 kg / 14.03 pounds 6363 g / 62.4 N	38.18 kg / 84.16 pounds ~0 Gs
3 mm	37.84 kg / 83.42 pounds 10 051 Gs	5.68 kg / 12.51 pounds 5675 g / 55.7 N	34.05 kg / 75.07 pounds ~0 Gs
5 mm	29.73 kg / 65.55 pounds 8 910 Gs	4.46 kg / 9.83 pounds 4460 g / 43.8 N	26.76 kg / 59.00 pounds ~0 Gs
10 mm	15.49 kg / 34.16 pounds 6 432 Gs	2.32 kg / 5.12 pounds 2324 g / 22.8 N	13.94 kg / 30.74 pounds ~0 Gs
20 mm	4.08 kg / 8.99 pounds 3 299 Gs	0.61 kg / 1.35 pounds 612 g / 6.0 N	3.67 kg / 8.09 pounds ~0 Gs
50 mm	0.18 kg / 0.41 pounds 702 Gs	0.03 kg / 0.06 pounds 28 g / 0.3 N	0.17 kg / 0.37 pounds ~0 Gs
60 mm	0.09 kg / 0.19 pounds 480 Gs	0.01 kg / 0.03 pounds 13 g / 0.1 N	0.08 kg / 0.17 pounds ~0 Gs
70 mm	0.04 kg / 0.10 pounds 342 Gs	0.01 kg / 0.01 pounds 7 g / 0.1 N	0.04 kg / 0.09 pounds ~0 Gs
80 mm	0.02 kg / 0.05 pounds 253 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
90 mm	0.01 kg / 0.03 pounds 193 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.03 pounds ~0 Gs
100 mm	0.01 kg / 0.02 pounds 150 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets interact from a significantly greater distance than a magnet and sheet combination. Such a system of magnet-to-magnet generates a stronger field and a further horizon of action. Planning to create a strong closure? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the collision energy is huge. The levitation is slightly lower than the attraction, but still significant.
*Flux density in repulsion mode reaches ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Calculations apply to sliding force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (electronics) - warnings
MP 20x8x6 / 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
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

Extremely neodym field poses a large risk to IT equipment as well as medical implants. These neodymiums produce a field that disrupts operation of sensitive medical devices. Notice: the unseen radiation penetrates the body and plastic. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, membranes, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - warning
MP 20x8x6 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.18 km/h (6.72 m/s)	0.27 J
30 mm	25.24 km/h (7.01 m/s)	0.29 J
50 mm	25.27 km/h (7.02 m/s)	0.29 J
100 mm	25.28 km/h (7.02 m/s)	0.29 J

Magnetic elements are prone to chipping – a collision with steel causes immediate chipping. Control the attraction moment – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Corrosion resistance
MP 20x8x6 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

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

Table 10: Construction data (Flux)
MP 20x8x6 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	15 688 Mx	156.9 µWb
P_c Coefficient	1.14	High (Stable)

Flux value passing through the magnet pole. Key data when building generators and motors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 20x8x6 / N38

Environment	Effective steel pull	Effect
Air (land)	7.22 kg	Standard
Water (riverbed)	8.27 kg (+1.05 kg buoyancy gain)	+14.5%

Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

*Note: On a vertical surface, the magnet retains just ~20% of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.14

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.

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%

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: 030189-2026

Magnet Unit Converter

Pulling force

Force in kg

Force (N)

lbs

Magnetic Field

Gauss (Gs)

Induction (T)

Put your value in just one slot to see the conversion in all other fields immediately.

View also products

Product available Ships tomorrow

UMT 12x20 black / N38 - board holder

1.894 zł brutto / pcs

Product available Ships tomorrow

MW 10x4 / N38 - cylindrical magnet

1.021 zł brutto / pcs

Product available Ships tomorrow

SM 25x225 [2xM8] / N52 - magnetic separator

688.80 zł brutto / pcs

Product available Ships tomorrow

MPL 6x6x6 / N38 - lamellar magnet

0.898 zł brutto / pcs

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. This product with a force of 7.22 kg works great as a cabinet closure, speaker holder, or spacer element in devices.

This is a crucial issue when working with model MP 20x8x6 / 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. It's a good idea to use a flexible washer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.

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. 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 Ø20x6 mm and a weight of 11.88 g. The key parameter here is the holding force amounting to approximately 7.22 kg (force ~70.81 N). The mounting hole diameter is precisely 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). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Apart from their notable power, neodymium magnets have these key benefits:

They retain full power for almost 10 years – the loss is just ~1% (in theory),
They possess excellent resistance to magnetic field loss due to opposing magnetic fields,
In other words, due to the aesthetic surface of nickel, the element looks attractive,
Neodymium magnets create maximum magnetic induction on a small surface, which allows for strong attraction,
Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to freedom in forming and the capacity to adapt to individual projects,
Significant place in innovative solutions – they find application in magnetic memories, drive modules, medical devices, and other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions

Weaknesses

Cons of neodymium magnets: weaknesses and usage proposals

At strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
We suggest a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complex shapes.
Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these products can be problematic in diagnostics medical when they are in the body.
With large orders the cost of neodymium magnets is a challenge,

Lifting parameters

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

Holding force of 7.22 kg is a result of laboratory testing performed under standard conditions:

on a base made of structural steel, effectively closing the magnetic flux
with a cross-section no less than 10 mm
with an ideally smooth contact surface
with direct contact (without impurities)
during detachment in a direction vertical to the mounting surface
in stable room temperature

Key elements affecting lifting force

Real force is influenced by working environment parameters, including (from most important):

Gap between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Steel type – mild steel attracts best. Alloy admixtures decrease magnetic properties and lifting capacity.
Smoothness – full contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Threat to navigation

Note: neodymium magnets produce a field that interferes with sensitive sensors. Keep a separation from your mobile, tablet, and navigation systems.

Bone fractures

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

Warning for heart patients

Individuals with a pacemaker should keep an absolute distance from magnets. The magnetic field can stop the operation of the life-saving device.

Eye protection

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Dust explosion hazard

Machining of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Data carriers

Equipment safety: Strong magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).

Handling rules

Handle magnets with awareness. Their powerful strength can shock even experienced users. Plan your moves and do not underestimate their power.

Thermal limits

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

Nickel coating and allergies

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.

Choking Hazard

Only for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep out of reach of kids and pets.

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

MP 20x8x6 / N38 - ring magnet

Technical specification of the product - MP 20x8x6 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the magnet - data

Table 1: Static pull force (pull vs distance) - characteristics MP 20x8x6 / N38

Table 2: Shear capacity (vertical surface) MP 20x8x6 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 20x8x6 / N38

Table 4: Steel thickness (substrate influence) - power losses MP 20x8x6 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MP 20x8x6 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MP 20x8x6 / N38

Table 7: Protective zones (electronics) - warnings MP 20x8x6 / N38

Table 8: Collisions (kinetic energy) - warning MP 20x8x6 / N38

Table 9: Corrosion resistance MP 20x8x6 / N38

Table 10: Construction data (Flux) MP 20x8x6 / N38

Table 11: Underwater work (magnet fishing) MP 20x8x6 / N38

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Elemental analysis

Environmental data

Pulling force

Magnetic Field

View also products

UMT 12x20 black / N38 - board holder

MW 10x4 / N38 - cylindrical magnet

SM 25x225 [2xM8] / N52 - magnetic separator

MPL 6x6x6 / N38 - lamellar magnet

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Lifting parameters

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

Key elements affecting lifting force

Safety rules for work with neodymium magnets

Threat to navigation

Bone fractures

Warning for heart patients

Eye protection

Dust explosion hazard

Data carriers

Handling rules

Thermal limits

Nickel coating and allergies

Choking Hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MP 20x8x6 / N38

Table 2: Shear capacity (vertical surface)
MP 20x8x6 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 20x8x6 / N38

Table 4: Steel thickness (substrate influence) - power losses
MP 20x8x6 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MP 20x8x6 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MP 20x8x6 / N38

Table 7: Protective zones (electronics) - warnings
MP 20x8x6 / N38

Table 8: Collisions (kinetic energy) - warning
MP 20x8x6 / N38

Table 9: Corrosion resistance
MP 20x8x6 / N38

Table 10: Construction data (Flux)
MP 20x8x6 / N38

Table 11: Underwater work (magnet fishing)
MP 20x8x6 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.