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MP 40x10.4/5.5x5 / 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 030249

GTIN/EAN: 5906301812258

5.00

Diameter

40 mm [±0,1 mm]

internal diameter Ø

10.4/5.5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

46.23 g

Magnetization Direction

↑ axial

Load capacity

9.47 kg / 92.86 N

Magnetic Induction

150.36 mT / 1504 Gs

Coating

[NiCuNi] Nickel

technical details »

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Technical - MP 40x10.4/5.5x5 / N38 - ring magnet

Specification / characteristics - MP 40x10.4/5.5x5 / N38 - ring magnet

properties

properties	values
Cat. no.	030249
GTIN/EAN	5906301812258
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	10.4/5.5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	46.23 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.47 kg / 92.86 N
Magnetic Induction ~ ?	150.36 mT / 1504 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 40x10.4/5.5x5 / 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 assembly - technical parameters

Presented data constitute the result of a mathematical analysis. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world performance might slightly differ. Please consider these data as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MP 40x10.4/5.5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1289 Gs 128.9 mT	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N	medium risk
1 mm	1265 Gs 126.5 mT	9.12 kg / 20.11 lbs 9120.9 g / 89.5 N	medium risk
2 mm	1232 Gs 123.2 mT	8.66 kg / 19.10 lbs 8662.7 g / 85.0 N	medium risk
3 mm	1193 Gs 119.3 mT	8.12 kg / 17.90 lbs 8121.3 g / 79.7 N	medium risk
5 mm	1099 Gs 109.9 mT	6.89 kg / 15.18 lbs 6887.8 g / 67.6 N	medium risk
10 mm	825 Gs 82.5 mT	3.88 kg / 8.56 lbs 3882.0 g / 38.1 N	medium risk
15 mm	580 Gs 58.0 mT	1.92 kg / 4.22 lbs 1915.5 g / 18.8 N	low risk
20 mm	399 Gs 39.9 mT	0.91 kg / 2.00 lbs 908.3 g / 8.9 N	low risk
30 mm	195 Gs 19.5 mT	0.22 kg / 0.48 lbs 217.6 g / 2.1 N	low risk
50 mm	61 Gs 6.1 mT	0.02 kg / 0.05 lbs 21.0 g / 0.2 N	low risk

Grip strength decreases sharply per each millimeter of distance. Keep in mind that even the smallest gap (e.g., dirt, paint, veneer) noticeably reduces the pull force. Neodymiums operate strongest in perfect adhesion; distance nullifies the force. Observe how quickly the pull force drop, when the magnet does not adhere tightly to the metal substrate. When designing the assembly, eliminate redundant distances.

Table 2: Sliding load (wall)
MP 40x10.4/5.5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.89 kg / 4.18 lbs 1894.0 g / 18.6 N
1 mm	Stal (~0.2)	1.82 kg / 4.02 lbs 1824.0 g / 17.9 N
2 mm	Stal (~0.2)	1.73 kg / 3.82 lbs 1732.0 g / 17.0 N
3 mm	Stal (~0.2)	1.62 kg / 3.58 lbs 1624.0 g / 15.9 N
5 mm	Stal (~0.2)	1.38 kg / 3.04 lbs 1378.0 g / 13.5 N
10 mm	Stal (~0.2)	0.78 kg / 1.71 lbs 776.0 g / 7.6 N
15 mm	Stal (~0.2)	0.38 kg / 0.85 lbs 384.0 g / 3.8 N
20 mm	Stal (~0.2)	0.18 kg / 0.40 lbs 182.0 g / 1.8 N
30 mm	Stal (~0.2)	0.04 kg / 0.10 lbs 44.0 g / 0.4 N
50 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N

The following data calculates the theoretical holding capacity sufficient to start the slippage of the magnet downwards against a upright steel wall (considering typical friction coefficient). This value varies with the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 40x10.4/5.5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.84 kg / 6.26 lbs 2841.0 g / 27.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.89 kg / 4.18 lbs 1894.0 g / 18.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.95 kg / 2.09 lbs 947.0 g / 9.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.74 kg / 10.44 lbs 4735.0 g / 46.5 N

When hanging a element on a vertical wall (e.g., a board), it you can count on barely about 1/5 of its maximum pull force. Gravity as well as a low friction coefficient influence the fact that products slip easier than they pull off. Want to create a vertical fastening? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the holder will slide down under a much lighter cargo. Using a rubber layer can effectively increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 40x10.4/5.5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.95 kg / 2.09 lbs 947.0 g / 9.3 N
1 mm	25%	2.37 kg / 5.22 lbs 2367.5 g / 23.2 N
2 mm	50%	4.74 kg / 10.44 lbs 4735.0 g / 46.5 N
3 mm	75%	7.10 kg / 15.66 lbs 7102.5 g / 69.7 N
5 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N
10 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N
11 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N
12 mm	100%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N

A thin metal plate is incapable of focus the full magnetic flux, which weakens actual performance of the magnet. If you mount a strong magnet to a weak sheet, the flux will penetrate right through and the holding will be smaller. To utilize the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation effect means that on thin elements (e.g., car bodies), the holder works worse. We advise picking the steel dimension based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MP 40x10.4/5.5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.47 kg / 20.88 lbs 9470.0 g / 92.9 N	OK
40 °C	-2.2%	9.26 kg / 20.42 lbs 9261.7 g / 90.9 N	OK
60 °C	-4.4%	9.05 kg / 19.96 lbs 9053.3 g / 88.8 N
80 °C	-6.6%	8.84 kg / 19.50 lbs 8845.0 g / 86.8 N
100 °C	-28.8%	6.74 kg / 14.86 lbs 6742.6 g / 66.1 N

Classic neodymiums change their properties strength after exceeding the maximum temperature. Protect against heat – high temperature can permanently damage this magnet. With increasing heat, the neodymium's power briefly lowers. Do not use this magnet near heat sources exceeding its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (pancake types) are more susceptible to demagnetization at lower temperatures than long magnets. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MP 40x10.4/5.5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	10.73 kg / 23.65 lbs 2 424 Gs	1.61 kg / 3.55 lbs 1609 g / 15.8 N	N/A
1 mm	10.55 kg / 23.25 lbs 2 555 Gs	1.58 kg / 3.49 lbs 1582 g / 15.5 N	9.49 kg / 20.93 lbs ~0 Gs
2 mm	10.33 kg / 22.78 lbs 2 529 Gs	1.55 kg / 3.42 lbs 1550 g / 15.2 N	9.30 kg / 20.50 lbs ~0 Gs
3 mm	10.09 kg / 22.23 lbs 2 499 Gs	1.51 kg / 3.34 lbs 1513 g / 14.8 N	9.08 kg / 20.01 lbs ~0 Gs
5 mm	9.52 kg / 20.98 lbs 2 427 Gs	1.43 kg / 3.15 lbs 1427 g / 14.0 N	8.56 kg / 18.88 lbs ~0 Gs
10 mm	7.80 kg / 17.20 lbs 2 198 Gs	1.17 kg / 2.58 lbs 1170 g / 11.5 N	7.02 kg / 15.48 lbs ~0 Gs
20 mm	4.40 kg / 9.69 lbs 1 650 Gs	0.66 kg / 1.45 lbs 660 g / 6.5 N	3.96 kg / 8.72 lbs ~0 Gs
50 mm	0.49 kg / 1.09 lbs 553 Gs	0.07 kg / 0.16 lbs 74 g / 0.7 N	0.44 kg / 0.98 lbs ~0 Gs
60 mm	0.25 kg / 0.54 lbs 391 Gs	0.04 kg / 0.08 lbs 37 g / 0.4 N	0.22 kg / 0.49 lbs ~0 Gs
70 mm	0.13 kg / 0.28 lbs 282 Gs	0.02 kg / 0.04 lbs 19 g / 0.2 N	0.12 kg / 0.26 lbs ~0 Gs
80 mm	0.07 kg / 0.15 lbs 209 Gs	0.01 kg / 0.02 lbs 11 g / 0.1 N	0.06 kg / 0.14 lbs ~0 Gs
90 mm	0.04 kg / 0.09 lbs 158 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
100 mm	0.02 kg / 0.05 lbs 121 Gs	0.00 kg / 0.01 lbs 4 g / 0.0 N	0.02 kg / 0.05 lbs ~0 Gs

Two magnets attract each other from a significantly greater distance than a neodymium and metal setup. The setup of magnet-to-magnet generates a stronger field and a larger range of operation. Planning to create a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the pinch force is huge. The levitation is a bit weaker than the connection force, but still large.
*The magnetic induction between like poles is approximately ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Important: Figures show shear force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - warnings
MP 40x10.4/5.5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	12.5 cm
Hearing aid	10 Gs (1.0 mT)	10.0 cm
Mechanical watch	20 Gs (2.0 mT)	8.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	6.0 cm
Car key	50 Gs (5.0 mT)	5.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Extremely neodym field poses a large risk to IT equipment and medical implants. These NdFeB products produce a flux that disrupts operation of digital equipment. Remember: the invisible magnetic field passes through tissues and glass. Special caution must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MP 40x10.4/5.5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.75 km/h (4.93 m/s)	0.56 J
30 mm	25.36 km/h (7.04 m/s)	1.15 J
50 mm	32.32 km/h (8.98 m/s)	1.86 J
100 mm	45.65 km/h (12.68 m/s)	3.72 J

Magnetic elements are prone to chipping – a collision with steel causes immediate chipping. Watch the impact speed – a magnet released freely speeds with massive force. Kinetic force can destroy the magnet or injury to fingers. Hold the magnet firmly during mounting so it doesn't hit violently against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Coating parameters (durability)
MP 40x10.4/5.5x5 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MP 40x10.4/5.5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	17 767 Mx	177.7 µWb
P_c Coefficient	0.17	Low (Flat)

Flux value emitted by the magnet pole. Essential parameter for generator designers and motors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 40x10.4/5.5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	9.47 kg	Standard
Water (riverbed)	10.84 kg (+1.37 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

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

2. Plate thickness effect

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

3. Power loss vs temp

*For N38 grade, 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) = 0.17

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

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: 030249-2026

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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. 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. 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 10.4/5.5 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.

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 9.47 kg (force ~92.86 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 10.4/5.5 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.

Pros and cons of neodymium magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:

They do not lose power, even during around ten years – the decrease in strength is only ~1% (according to tests),
Magnets perfectly defend themselves against demagnetization caused by ambient magnetic noise,
A magnet with a metallic nickel surface has better aesthetics,
The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Thanks to the possibility of accurate forming and customization to individualized needs, magnetic components can be manufactured in a wide range of shapes and sizes, which amplifies use scope,
Fundamental importance in advanced technology sectors – they find application in magnetic memories, drive modules, medical devices, as well as modern systems.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in miniature devices

Limitations

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
We warn that neodymium magnets can lose their strength 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 suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex shapes.
Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Furthermore, small components of these devices can complicate diagnosis medical when they are in the body.
Due to complex production process, their price exceeds standard values,

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

The force parameter is a result of laboratory testing conducted under standard conditions:

with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
with a thickness minimum 10 mm
characterized by smoothness
without any insulating layer between the magnet and steel
under axial application of breakaway force (90-degree angle)
at room temperature

Lifting capacity in real conditions – factors

It is worth knowing that the application force will differ influenced by elements below, starting with the most relevant:

Distance – existence of any layer (paint, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
Plate thickness – insufficiently thick steel does not accept the full field, causing part of the flux to be wasted into the air.
Metal type – different alloys reacts the same. Alloy additives worsen the attraction effect.
Surface quality – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Do not drill into magnets

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Operating temperature

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Physical harm

Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Product not for children

NdFeB magnets are not toys. Accidental ingestion of several magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires immediate surgery.

Do not underestimate power

Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Beware of splinters

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Allergy Warning

Studies show that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or opt for versions in plastic housing.

Threat to electronics

Do not bring magnets near a wallet, computer, or TV. The magnetism can destroy these devices and wipe information from cards.

Phone sensors

Navigation devices and mobile phones are highly sensitive to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.

Medical interference

For implant holders: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.

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

MP 40x10.4/5.5x5 / N38 - ring magnet

Technical - MP 40x10.4/5.5x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - technical parameters

Table 1: Static pull force (force vs distance) - characteristics MP 40x10.4/5.5x5 / N38

Table 2: Sliding load (wall) MP 40x10.4/5.5x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MP 40x10.4/5.5x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MP 40x10.4/5.5x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit MP 40x10.4/5.5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MP 40x10.4/5.5x5 / N38

Table 7: Hazards (electronics) - warnings MP 40x10.4/5.5x5 / N38

Table 8: Dynamics (cracking risk) - warning MP 40x10.4/5.5x5 / N38

Table 9: Coating parameters (durability) MP 40x10.4/5.5x5 / N38

Table 10: Construction data (Pc) MP 40x10.4/5.5x5 / N38

Table 11: Underwater work (magnet fishing) MP 40x10.4/5.5x5 / N38

1. Shear force

2. Plate thickness effect

3. Power loss vs temp

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

Elemental analysis

Environmental data

Magnet pull force

Field Strength

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Pros and cons of neodymium magnets.

Pros

Limitations

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

Lifting capacity in real conditions – factors

Precautions when working with neodymium magnets

Do not drill into magnets

Operating temperature

Physical harm

Product not for children

Do not underestimate power

Beware of splinters

Allergy Warning

Threat to electronics

Phone sensors

Medical interference

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MP 40x10.4/5.5x5 / N38

Table 2: Sliding load (wall)
MP 40x10.4/5.5x5 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 40x10.4/5.5x5 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MP 40x10.4/5.5x5 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MP 40x10.4/5.5x5 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MP 40x10.4/5.5x5 / N38

Table 7: Hazards (electronics) - warnings
MP 40x10.4/5.5x5 / N38

Table 8: Dynamics (cracking risk) - warning
MP 40x10.4/5.5x5 / N38

Table 9: Coating parameters (durability)
MP 40x10.4/5.5x5 / N38

Table 10: Construction data (P_c)
MP 40x10.4/5.5x5 / N38

Table 11: Underwater work (magnet fishing)
MP 40x10.4/5.5x5 / N38