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MP 40x20x5 / 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
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

see technical specifications »

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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.

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Detailed specification - 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 analysis of the product - data

The following data constitute the outcome of a engineering calculation. Results rely on algorithms for the class Nd₂Fe₁₄B. Real-world parameters might slightly differ. Treat these data as a reference point during assembly planning.

Table 1: Static pull force (pull vs gap) - interaction chart
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	medium risk
1 mm	5005 Gs 500.5 mT	6.53 kg / 14.41 pounds 6534.7 g / 64.1 N	medium risk
2 mm	4739 Gs 473.9 mT	5.86 kg / 12.91 pounds 5857.7 g / 57.5 N	medium risk
3 mm	4475 Gs 447.5 mT	5.22 kg / 11.51 pounds 5222.2 g / 51.2 N	medium risk
5 mm	3960 Gs 396.0 mT	4.09 kg / 9.02 pounds 4090.8 g / 40.1 N	medium risk
10 mm	2832 Gs 283.2 mT	2.09 kg / 4.61 pounds 2092.3 g / 20.5 N	medium risk
15 mm	1990 Gs 199.0 mT	1.03 kg / 2.28 pounds 1033.4 g / 10.1 N	low risk
20 mm	1407 Gs 140.7 mT	0.52 kg / 1.14 pounds 516.3 g / 5.1 N	low risk
30 mm	745 Gs 74.5 mT	0.14 kg / 0.32 pounds 144.6 g / 1.4 N	low risk
50 mm	268 Gs 26.8 mT	0.02 kg / 0.04 pounds 18.7 g / 0.2 N	low risk

Grip strength drops drastically with every mm of spacing. Remember that every additional insulation layer (e.g., contamination, paint, veneer) noticeably diminishes the holding power. Magnets hold optimally at the point of direct contact; distance kills the power. Observe how flashily the load capacity drop, when the product does not touch directly to the metal substrate. When planning the assembly, avoid redundant distances.

Table 2: Shear hold (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 defines the approximate force required to initiate the sliding of the magnet downwards along a upright metal surface (assuming standard friction). This parameter depends on the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - 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 mounting a magnet on a vertical surface (e.g., a car body), it will only hold only about 20%-30% of its maximum pull force. Gravity and a weak degree of grip mean that products slip easier than they pull off. Designing a hanger? Consider that the shear force is significantly lower than the maximum static pull force. On a painted metal, the holder will slip down under a significantly smaller cargo. Application of an anti-slip pad can effectively raise the stability.

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 metal plate is unable to take in the entire magnetic field, which squanders power of the magnet. If you install a neodymium to a thin surface, the field will penetrate right through and the pull force will drop sharply. To achieve the maximum of this magnet's potential, you need a suitably thick backing of metal. The saturation effect causes that on sheet metal structures (e.g., car bodies), the product works worse. We suggest choosing the steel dimension based on the following data.

Table 5: Thermal resistance (stability) - thermal limit
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

Ordinary NdFeB products change their properties strength above the temperature limit. Avoid high temperatures – heat can permanently destroy this product. With increasing heat, the magnet's force momentarily decreases. Refrain from using this magnet close to heaters exceeding its working range. Exceeding the critical threshold will cause destruction of magnetic properties.

*Important note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) risk losing magnetic properties under lower heat stress than long magnets. Warning indicator in the table indicates 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)	Lateral 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 magnets interact from a significantly greater distance than a magnet and steel setup. Such a system of magnet-to-magnet produces a massive flux and a further horizon of operation. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Exercise caution that when bringing together two magnets, the pinch force is extreme. The levitation is marginally weaker than the connection force, but still large.
*Flux density in repulsion mode drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Important: Calculations refer to sliding force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
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
Mobile device	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

A strong magnetic field poses a real danger to IT equipment as well as medical implants. These neodymiums produce a field that prevents correct functioning of sensitive medical devices. Be aware: the unseen radiation penetrates the body and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, speakers, and displays. Do not bring the product near payment cards, HDD media, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - 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

NdFeB products are very brittle – a strong collision with metal risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can cause material chips or painful pinches to skin. Hold the magnet firmly during installation so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the neodymium. Use safety goggles when working with large magnets.

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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical 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)

Total magnetic flux passing through the magnet pole. Essential parameter for generator designers as well as sensors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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%

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

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Note: On a vertical wall, the magnet retains merely approx. 20-30% of its nominal pull.

2. Steel thickness impact

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

3. Temperature resistance

*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) = 0.80

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.

Technical specification and ecology

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: 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. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 40x20x5 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a 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. This product is dedicated for inside building use. For outdoor applications, we recommend choosing magnets in hermetic housing or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 20 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

This model is characterized by dimensions Ø40x5 mm and a weight of 35.34 g. The key parameter here is the lifting capacity amounting to approximately 7.24 kg (force ~70.98 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 20 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. 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.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Benefits

Apart from their consistent holding force, neodymium magnets have these key benefits:

Their power is maintained, and after approximately ten years it drops only by ~1% (theoretically),
Magnets very well resist against demagnetization caused by ambient magnetic noise,
By covering with a lustrous coating of gold, the element has an elegant look,
They feature high magnetic induction at the operating surface, which improves attraction properties,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
Due to the potential of precise forming and customization to custom needs, magnetic components can be created in a broad palette of geometric configurations, which makes them more universal,
Huge importance in future technologies – they serve a role in magnetic memories, drive modules, medical equipment, as well as modern systems.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in creating nuts and complex forms in magnets, we recommend using a housing - magnetic mount.
Potential hazard resulting from small fragments of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these products are able to complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

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

using a sheet made of high-permeability steel, functioning as a ideal flux conductor
possessing a thickness of at least 10 mm to ensure full flux closure
characterized by even structure
with total lack of distance (no coatings)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Lifting capacity in real conditions – factors

Real force impacted by working environment parameters, mainly (from priority):

Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
Steel thickness – too thin plate does not close the flux, causing part of the power to be escaped to the other side.
Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Warnings

Impact on smartphones

GPS units and mobile phones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Danger to pacemakers

Patients with a heart stimulator should maintain an safe separation from magnets. The magnetism can stop the operation of the implant.

Serious injuries

Risk of injury: The pulling power is so great that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Heat warning

Do not overheat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Dust is flammable

Powder created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Skin irritation risks

Medical facts indicate that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent touching magnets with bare hands and opt for coated magnets.

Adults only

Strictly keep magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are tragic.

Beware of splinters

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them breaking into small pieces.

Electronic devices

Do not bring magnets close to a wallet, laptop, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Handling rules

Use magnets consciously. Their immense force can shock even professionals. Be vigilant and respect their power.

Caution! Details about hazards in the article: Safety of working with magnets.

MP 40x20x5 / N38 - ring magnet

Detailed specification - MP 40x20x5 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - data

Table 1: Static pull force (pull vs gap) - interaction chart MP 40x20x5 / N38

Table 2: Shear hold (vertical surface) MP 40x20x5 / N38

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

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

Table 5: Thermal resistance (stability) - thermal limit MP 40x20x5 / N38

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

Table 7: Safety (HSE) (implants) - warnings MP 40x20x5 / N38

Table 8: Collisions (kinetic energy) - warning MP 40x20x5 / N38

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

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

Table 11: Underwater work (magnet fishing) MP 40x20x5 / N38

1. Shear force

2. Steel thickness impact

3. Temperature resistance

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Field

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Benefits

Cons

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Lifting capacity in real conditions – factors

Warnings

Impact on smartphones

Danger to pacemakers

Serious injuries

Heat warning

Dust is flammable

Skin irritation risks

Adults only

Beware of splinters

Electronic devices

Handling rules

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MP 40x20x5 / N38

Table 2: Shear hold (vertical surface)
MP 40x20x5 / N38

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

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

Table 5: Thermal resistance (stability) - thermal limit
MP 40x20x5 / N38

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

Table 7: Safety (HSE) (implants) - warnings
MP 40x20x5 / N38

Table 8: Collisions (kinetic energy) - warning
MP 40x20x5 / N38

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

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

Table 11: Underwater work (magnet fishing)
MP 40x20x5 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.