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MP 40x20x5 / 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 030199

GTIN/EAN: 5906301812166

5.00

Diameter

40 mm [±0,1 mm]

internal diameter Ø

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

35.34 g

Magnetization Direction

↑ axial

Load capacity

7.24 kg / 70.98 N

Magnetic Induction

150.36 mT / 1504 Gs

Coating

[NiCuNi] Nickel

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Product card - MP 40x20x5 / N38 - ring magnet

Specification / characteristics - MP 40x20x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030199
GTIN/EAN	5906301812166
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	40 mm [±0,1 mm]
internal diameter Ø	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	35.34 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.24 kg / 70.98 N
Magnetic Induction ~ ?	150.36 mT / 1504 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 40x20x5 / N38 - ring magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Physical modeling of the product - data

These data are the result of a engineering calculation. Values are based on models for the class Nd₂Fe₁₄B. Real-world performance may deviate from the simulation results. Please consider these data as a reference point for designers.

Table 1: Static force (force vs gap) - power drop
MP 40x20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5269 Gs 526.9 mT	7.24 kg / 15.96 pounds 7240.0 g / 71.0 N	strong
1 mm	5005 Gs 500.5 mT	6.53 kg / 14.41 pounds 6534.7 g / 64.1 N	strong
2 mm	4739 Gs 473.9 mT	5.86 kg / 12.91 pounds 5857.7 g / 57.5 N	strong
3 mm	4475 Gs 447.5 mT	5.22 kg / 11.51 pounds 5222.2 g / 51.2 N	strong
5 mm	3960 Gs 396.0 mT	4.09 kg / 9.02 pounds 4090.8 g / 40.1 N	strong
10 mm	2832 Gs 283.2 mT	2.09 kg / 4.61 pounds 2092.3 g / 20.5 N	strong
15 mm	1990 Gs 199.0 mT	1.03 kg / 2.28 pounds 1033.4 g / 10.1 N	safe
20 mm	1407 Gs 140.7 mT	0.52 kg / 1.14 pounds 516.3 g / 5.1 N	safe
30 mm	745 Gs 74.5 mT	0.14 kg / 0.32 pounds 144.6 g / 1.4 N	safe
50 mm	268 Gs 26.8 mT	0.02 kg / 0.04 pounds 18.7 g / 0.2 N	safe

Grip strength weakens significantly with every subsequent millimeter of spacing. Remember that even the smallest gap (e.g., dirt, varnish, rust) noticeably weakens the grip. Magnets hold strongest in perfect adhesion; gap weakens the power. See how quickly the parameters fall, when the product does not adhere tightly to the metal substrate. When designing the assembly, eliminate redundant distances.

Table 2: Sliding capacity (vertical surface)
MP 40x20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.45 kg / 3.19 pounds 1448.0 g / 14.2 N
1 mm	Stal (~0.2)	1.31 kg / 2.88 pounds 1306.0 g / 12.8 N
2 mm	Stal (~0.2)	1.17 kg / 2.58 pounds 1172.0 g / 11.5 N
3 mm	Stal (~0.2)	1.04 kg / 2.30 pounds 1044.0 g / 10.2 N
5 mm	Stal (~0.2)	0.82 kg / 1.80 pounds 818.0 g / 8.0 N
10 mm	Stal (~0.2)	0.42 kg / 0.92 pounds 418.0 g / 4.1 N
15 mm	Stal (~0.2)	0.21 kg / 0.45 pounds 206.0 g / 2.0 N
20 mm	Stal (~0.2)	0.10 kg / 0.23 pounds 104.0 g / 1.0 N
30 mm	Stal (~0.2)	0.03 kg / 0.06 pounds 28.0 g / 0.3 N
50 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N

This section shows the theoretical shear load needed to initiate the shifting of the magnet vertically against a upright steel plate (assuming typical friction). The holding force depends on the distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 40x20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.17 kg / 4.79 pounds 2172.0 g / 21.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.45 kg / 3.19 pounds 1448.0 g / 14.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.72 kg / 1.60 pounds 724.0 g / 7.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.62 kg / 7.98 pounds 3620.0 g / 35.5 N

When placing a holder on a upright plane (e.g., a board), it will only hold only about 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that products slide down faster than they detach. Designing a wall mount? Note that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will slip down under a noticeably lighter weight. Utilizing a rubberized coating can significantly improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 40x20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.72 kg / 1.60 pounds 724.0 g / 7.1 N
1 mm	25%	1.81 kg / 3.99 pounds 1810.0 g / 17.8 N
2 mm	50%	3.62 kg / 7.98 pounds 3620.0 g / 35.5 N
3 mm	75%	5.43 kg / 11.97 pounds 5430.0 g / 53.3 N
5 mm	100%	7.24 kg / 15.96 pounds 7240.0 g / 71.0 N
10 mm	100%	7.24 kg / 15.96 pounds 7240.0 g / 71.0 N
11 mm	100%	7.24 kg / 15.96 pounds 7240.0 g / 71.0 N
12 mm	100%	7.24 kg / 15.96 pounds 7240.0 g / 71.0 N

A thin sheet cannot conduct the entire magnetic field, which wastes potential of the holder. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the pull force will drop sharply. To achieve the maximum of this magnet's power, you need a suitably thick backing of metal. The saturation effect means that on delicate walls (e.g., car bodies), the magnet holds weaker. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (stability) - power drop
MP 40x20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.24 kg / 15.96 pounds 7240.0 g / 71.0 N	OK
40 °C	-2.2%	7.08 kg / 15.61 pounds 7080.7 g / 69.5 N	OK
60 °C	-4.4%	6.92 kg / 15.26 pounds 6921.4 g / 67.9 N	OK
80 °C	-6.6%	6.76 kg / 14.91 pounds 6762.2 g / 66.3 N
100 °C	-28.8%	5.15 kg / 11.36 pounds 5154.9 g / 50.6 N

Standard neodymium magnets change their properties parameters after exceeding the maximum temperature. Watch out for overheating – excessive heat can permanently destroy this product. As the temperature rises, the neodymium's power briefly lowers. Do not use this magnet in hot environments exceeding its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) may lose charge permanently at lower temperatures than taller cylinders. Red status in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 40x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	179.94 kg / 396.69 pounds 5 920 Gs	26.99 kg / 59.50 pounds 26991 g / 264.8 N	N/A
1 mm	171.16 kg / 377.35 pounds 10 277 Gs	25.67 kg / 56.60 pounds 25675 g / 251.9 N	154.05 kg / 339.62 pounds ~0 Gs
2 mm	162.41 kg / 358.05 pounds 10 011 Gs	24.36 kg / 53.71 pounds 24361 g / 239.0 N	146.17 kg / 322.24 pounds ~0 Gs
3 mm	153.87 kg / 339.24 pounds 9 744 Gs	23.08 kg / 50.89 pounds 23081 g / 226.4 N	138.49 kg / 305.31 pounds ~0 Gs
5 mm	137.55 kg / 303.25 pounds 9 213 Gs	20.63 kg / 45.49 pounds 20633 g / 202.4 N	123.80 kg / 272.92 pounds ~0 Gs
10 mm	101.67 kg / 224.14 pounds 7 921 Gs	15.25 kg / 33.62 pounds 15251 g / 149.6 N	91.50 kg / 201.73 pounds ~0 Gs
20 mm	52.00 kg / 114.64 pounds 5 665 Gs	7.80 kg / 17.20 pounds 7800 g / 76.5 N	46.80 kg / 103.18 pounds ~0 Gs
50 mm	6.64 kg / 14.64 pounds 2 025 Gs	1.00 kg / 2.20 pounds 996 g / 9.8 N	5.98 kg / 13.18 pounds ~0 Gs
60 mm	3.59 kg / 7.92 pounds 1 489 Gs	0.54 kg / 1.19 pounds 539 g / 5.3 N	3.23 kg / 7.13 pounds ~0 Gs
70 mm	2.03 kg / 4.48 pounds 1 120 Gs	0.30 kg / 0.67 pounds 305 g / 3.0 N	1.83 kg / 4.03 pounds ~0 Gs
80 mm	1.20 kg / 2.64 pounds 860 Gs	0.18 kg / 0.40 pounds 180 g / 1.8 N	1.08 kg / 2.38 pounds ~0 Gs
90 mm	0.73 kg / 1.62 pounds 673 Gs	0.11 kg / 0.24 pounds 110 g / 1.1 N	0.66 kg / 1.46 pounds ~0 Gs
100 mm	0.47 kg / 1.03 pounds 536 Gs	0.07 kg / 0.15 pounds 70 g / 0.7 N	0.42 kg / 0.92 pounds ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a neodymium and metal combination. The connection of magnet-to-magnet creates a more powerful interaction and a wider radius of performance. Want to build a solid fastener? Use a pair of magnets instead of one magnet and a steel. Be careful that when attracting two neodymiums, the pinch force is huge. The repulsion force is marginally weaker than the attraction, but still large.
*Field value for N-N configuration drops to ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Attention: Results refer to shear force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - precautionary measures
MP 40x20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	18.5 cm
Timepiece	20 Gs (2.0 mT)	14.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	11.0 cm
Remote	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

Powerful magnet radiation poses a real danger to electronics and pacemakers. These neodymiums generate a field that prevents correct functioning of digital equipment. Notice: the invisible magnetic field passes through tissues and glass. Special caution must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - warning
MP 40x20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.84 km/h (4.68 m/s)	0.39 J
30 mm	25.31 km/h (7.03 m/s)	0.87 J
50 mm	32.33 km/h (8.98 m/s)	1.43 J
100 mm	45.65 km/h (12.68 m/s)	2.84 J

Magnetic elements are prone to chipping – a collision with steel can result in shattering. Pay attention to connection velocity – a magnet released freely turns into a projectile. Striking energy can trigger coating fragments or injury to skin. Always hold the magnet during mounting so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MP 40x20x5 / 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 (Flux)
MP 40x20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	56 325 Mx	563.3 µWb
P_c Coefficient	0.80	High (Stable)

Flux value emitted by the pole surface. Key data when building generators and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Submerged application
MP 40x20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	7.24 kg	Standard
Water (riverbed)	8.29 kg (+1.05 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Note: On a vertical wall, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Steel saturation

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.80

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

Material specification

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: 030199-2026

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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. Mounting is clean and reversible, unlike gluing. This product with a force of 7.24 kg works great as a cabinet closure, speaker holder, or spacer element in devices.

This is a crucial issue when working with model MP 40x20x5 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. 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.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 20 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Always check that the screw head is not larger than the outer diameter of the magnet (40 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø40 mm (outer diameter) and height 5 mm. The key parameter here is the lifting capacity amounting to approximately 7.24 kg (force ~70.98 N). The mounting hole diameter is precisely 20 mm.

The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Pros and cons of rare earth magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They do not lose strength, even over approximately ten years – the reduction in lifting capacity is only ~1% (theoretically),
They possess excellent resistance to magnetic field loss as a result of external fields,
In other words, due to the metallic surface of nickel, the element gains visual value,
Magnets are characterized by excellent magnetic induction on the outer layer,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
Due to the option of free shaping and customization to individualized solutions, NdFeB magnets can be modeled in a wide range of shapes and sizes, which expands the range of possible applications,
Wide application in future technologies – they are commonly used in HDD drives, electromotive mechanisms, diagnostic systems, also complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in miniature devices

Disadvantages

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in creating nuts and complex forms in magnets, we propose using cover - magnetic mechanism.
Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these products can disrupt the diagnostic process medical when they are in the body.
Due to expensive raw materials, their price is higher than average,

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?

Breakaway force was defined for optimal configuration, including:

using a plate made of mild steel, serving as a ideal flux conductor
with a thickness no less than 10 mm
with a surface free of scratches
without the slightest clearance between the magnet and steel
under axial application of breakaway force (90-degree angle)
at room temperature

Lifting capacity in real conditions – factors

In real-world applications, the real power results from a number of factors, ranked from crucial:

Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
Plate thickness – too thin sheet does not accept the full field, causing part of the power to be lost to the other side.
Material type – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Heat – neodymium magnets 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 was assessed by applying a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Do not give to children

Only for adults. Small elements can be swallowed, causing severe trauma. Store away from children and animals.

Data carriers

Equipment safety: Strong magnets can ruin payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Permanent damage

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Threat to navigation

GPS units and mobile phones are extremely sensitive to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Protective goggles

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets will cause them cracking into small pieces.

Warning for allergy sufferers

A percentage of the population experience a contact allergy to Ni, which is the standard coating for NdFeB magnets. Frequent touching may cause skin redness. We recommend wear safety gloves.

Fire warning

Powder created during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Safe operation

Handle with care. Neodymium magnets act from a distance and connect with huge force, often faster than you can move away.

Crushing force

Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Use thick gloves.

Life threat

Life threat: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.

Safety First! Looking for details? Check our post: Are neodymium magnets dangerous?

MP 40x20x5 / N38 - ring magnet

Product card - MP 40x20x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the product - data

Table 1: Static force (force vs gap) - power drop MP 40x20x5 / N38

Table 2: Sliding capacity (vertical surface) MP 40x20x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MP 40x20x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 40x20x5 / N38

Table 5: Thermal stability (stability) - power drop MP 40x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision MP 40x20x5 / N38

Table 7: Protective zones (electronics) - precautionary measures MP 40x20x5 / N38

Table 8: Impact energy (cracking risk) - warning MP 40x20x5 / N38

Table 9: Anti-corrosion coating durability MP 40x20x5 / N38

Table 10: Construction data (Flux) MP 40x20x5 / N38

Table 11: Submerged application MP 40x20x5 / N38

1. Shear force

2. Steel saturation

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

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Pros and cons of rare earth magnets.

Pros

Disadvantages

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what affects it?

Lifting capacity in real conditions – factors

Safety rules for work with neodymium magnets

Do not give to children

Data carriers

Permanent damage

Threat to navigation

Protective goggles

Warning for allergy sufferers

Fire warning

Safe operation

Crushing force

Life threat

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - power drop
MP 40x20x5 / N38

Table 2: Sliding capacity (vertical surface)
MP 40x20x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 40x20x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 40x20x5 / N38

Table 5: Thermal stability (stability) - power drop
MP 40x20x5 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MP 40x20x5 / N38

Table 7: Protective zones (electronics) - precautionary measures
MP 40x20x5 / N38

Table 8: Impact energy (cracking risk) - warning
MP 40x20x5 / N38

Table 9: Anti-corrosion coating durability
MP 40x20x5 / N38

Table 10: Construction data (Flux)
MP 40x20x5 / N38

Table 11: Submerged application
MP 40x20x5 / N38