Product available Ships today (order by 14:00)

MPL 20x5x5 / N38 - lamellar 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

lamellar magnet

Catalog no 020132

GTIN/EAN: 5906301811381

5.00

length

20 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

3.75 g

Magnetization Direction

↑ axial

Load capacity

4.42 kg / 43.32 N

Magnetic Induction

456.78 mT / 4568 Gs

Coating

[NiCuNi] Nickel

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2.76 ZŁ with VAT / pcs + price for transport

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Do you have a dilemma?

Pick up the phone and ask +48 888 99 98 98 alternatively let us know via form the contact page.
Lifting power along with appearance of neodymium magnets can be reviewed with our magnetic mass calculator.

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

Technical of the product - MPL 20x5x5 / N38 - lamellar magnet

Specification / characteristics - MPL 20x5x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020132
GTIN/EAN	5906301811381
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
length	20 mm [±0,1 mm]
Width	5 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	3.75 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.42 kg / 43.32 N
Magnetic Induction ~ ?	456.78 mT / 4568 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x5x5 / N38 - lamellar 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 assembly - report

These information are the outcome of a mathematical analysis. Results rely on algorithms for the material Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (force vs distance) - characteristics
MPL 20x5x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4563 Gs 456.3 mT	4.42 kg / 9.74 pounds 4420.0 g / 43.4 N	warning
1 mm	3323 Gs 332.3 mT	2.34 kg / 5.17 pounds 2344.7 g / 23.0 N	warning
2 mm	2341 Gs 234.1 mT	1.16 kg / 2.56 pounds 1163.0 g / 11.4 N	safe
3 mm	1678 Gs 167.8 mT	0.60 kg / 1.32 pounds 597.4 g / 5.9 N	safe
5 mm	944 Gs 94.4 mT	0.19 kg / 0.42 pounds 189.2 g / 1.9 N	safe
10 mm	320 Gs 32.0 mT	0.02 kg / 0.05 pounds 21.7 g / 0.2 N	safe
15 mm	141 Gs 14.1 mT	0.00 kg / 0.01 pounds 4.2 g / 0.0 N	safe
20 mm	73 Gs 7.3 mT	0.00 kg / 0.00 pounds 1.1 g / 0.0 N	safe
30 mm	26 Gs 2.6 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe
50 mm	7 Gs 0.7 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Grip strength weakens significantly with every subsequent millimeter of gap. Note that even a very thin break (e.g., dirt, varnish, rust) strongly weakens the grip. Neodymiums work optimally at the point of direct contact; air break weakens the force. See how flashily the parameters drop, when the product does not touch directly to the steel surface. When designing the assembly, discard unnecessary gaps.

Table 2: Shear force (vertical surface)
MPL 20x5x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.88 kg / 1.95 pounds 884.0 g / 8.7 N
1 mm	Stal (~0.2)	0.47 kg / 1.03 pounds 468.0 g / 4.6 N
2 mm	Stal (~0.2)	0.23 kg / 0.51 pounds 232.0 g / 2.3 N
3 mm	Stal (~0.2)	0.12 kg / 0.26 pounds 120.0 g / 1.2 N
5 mm	Stal (~0.2)	0.04 kg / 0.08 pounds 38.0 g / 0.4 N
10 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data defines the approximate weight limit needed to initiate the shifting of the magnet down against a vertical steel plate (considering typical friction). This value depends on the gap size between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 20x5x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.33 kg / 2.92 pounds 1326.0 g / 13.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.88 kg / 1.95 pounds 884.0 g / 8.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.44 kg / 0.97 pounds 442.0 g / 4.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N

When hanging a magnet on a vertical plane (e.g., a car body), it will only hold just approx. 20%-30% of its maximum pull force. Gravitational force as well as a weak degree of grip mean that products move down easier than they detach. Planning a vertical fastening? Remember that the shear force is much weaker than the maximum static pull force. On a painted metal, the magnet will give way down under a much lighter cargo. Application of an anti-slip coating can significantly raise the stability.

Table 4: Steel thickness (saturation) - power losses
MPL 20x5x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.44 kg / 0.97 pounds 442.0 g / 4.3 N
1 mm	25%	1.11 kg / 2.44 pounds 1105.0 g / 10.8 N
2 mm	50%	2.21 kg / 4.87 pounds 2210.0 g / 21.7 N
3 mm	75%	3.32 kg / 7.31 pounds 3315.0 g / 32.5 N
5 mm	100%	4.42 kg / 9.74 pounds 4420.0 g / 43.4 N
10 mm	100%	4.42 kg / 9.74 pounds 4420.0 g / 43.4 N
11 mm	100%	4.42 kg / 9.74 pounds 4420.0 g / 43.4 N
12 mm	100%	4.42 kg / 9.74 pounds 4420.0 g / 43.4 N

A too thin steel cannot focus the entire magnetic field, which squanders power of the holder. Should you attach a powerful product to a thin surface, the flux will penetrate right through and the pull force will drop sharply. To squeeze the maximum of this magnet's potential, you need a suitably thick backing of metal. The saturation effect means that on delicate walls (e.g., car bodies), the magnet works worse. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal stability (material behavior) - power drop
MPL 20x5x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.42 kg / 9.74 pounds 4420.0 g / 43.4 N	OK
40 °C	-2.2%	4.32 kg / 9.53 pounds 4322.8 g / 42.4 N	OK
60 °C	-4.4%	4.23 kg / 9.32 pounds 4225.5 g / 41.5 N
80 °C	-6.6%	4.13 kg / 9.10 pounds 4128.3 g / 40.5 N
100 °C	-28.8%	3.15 kg / 6.94 pounds 3147.0 g / 30.9 N

Ordinary NdFeB products lose parameters past the thermal threshold. Protect against heat – heat can irreversibly damage this magnet. With increasing heat, the neodymium's power briefly drops. Avoid using this magnet close to ovens exceeding its working range. Exceeding the critical threshold will cause irreversible degradation of magnetism.

*Important note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. The danger warning in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MPL 20x5x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	12.84 kg / 28.30 pounds 5 504 Gs	1.93 kg / 4.24 pounds 1925 g / 18.9 N	N/A
1 mm	9.53 kg / 21.01 pounds 7 864 Gs	1.43 kg / 3.15 pounds 1430 g / 14.0 N	8.58 kg / 18.91 pounds ~0 Gs
2 mm	6.81 kg / 15.01 pounds 6 647 Gs	1.02 kg / 2.25 pounds 1021 g / 10.0 N	6.13 kg / 13.51 pounds ~0 Gs
3 mm	4.79 kg / 10.57 pounds 5 577 Gs	0.72 kg / 1.59 pounds 719 g / 7.1 N	4.31 kg / 9.51 pounds ~0 Gs
5 mm	2.40 kg / 5.30 pounds 3 949 Gs	0.36 kg / 0.79 pounds 360 g / 3.5 N	2.16 kg / 4.77 pounds ~0 Gs
10 mm	0.55 kg / 1.21 pounds 1 888 Gs	0.08 kg / 0.18 pounds 82 g / 0.8 N	0.49 kg / 1.09 pounds ~0 Gs
20 mm	0.06 kg / 0.14 pounds 640 Gs	0.01 kg / 0.02 pounds 9 g / 0.1 N	0.06 kg / 0.13 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 84 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 53 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 35 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 24 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 18 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 13 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products attract each other from a much further distance than a magnet and sheet combination. The connection of two magnets generates a stronger field and a larger range of action. Designing a strong closure? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the impact force is massive. The levitation is a bit weaker than the connection force, but still impressive.
*The magnetic induction for N-N configuration is approximately ~0 Gs at the geometric center between the magnets (due to field cancellation).
Attention: Figures apply to shear force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - warnings
MPL 20x5x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.0 cm
Hearing aid	10 Gs (1.0 mT)	4.5 cm
Timepiece	20 Gs (2.0 mT)	3.5 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	2.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Extremely neodym field poses a serious hazard to electronic devices as well as medical implants. These neodymiums generate a flux that destroys function of sensitive medical devices. Be aware: the unseen radiation penetrates the body and plastic. Increased vigilance must be exercised by people with hearing aids and drug dispensers. Also at risk are: automatic timepieces, remotes, membranes, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (kinetic energy) - collision effects
MPL 20x5x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.73 km/h (9.65 m/s)	0.17 J
30 mm	59.97 km/h (16.66 m/s)	0.52 J
50 mm	77.42 km/h (21.51 m/s)	0.87 J
100 mm	109.49 km/h (30.41 m/s)	1.73 J

Magnetic elements are very brittle – a collision with steel can result in shattering. Watch the impact speed – a neodymium left loose becomes dangerous. Striking energy can trigger coating fragments or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when handling with powerful specimens.

Table 9: Surface protection spec
MPL 20x5x5 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MPL 20x5x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 204 Mx	42.0 µWb
P_c Coefficient	0.54	Low (Flat)

Flux value passing through the pole surface. Key data in coil applications as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Physics of underwater searching
MPL 20x5x5 / N38

Environment	Effective steel pull	Effect
Air (land)	4.42 kg	Standard
Water (riverbed)	5.06 kg (+0.64 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. Vertical hold

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

2. Steel saturation

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

3. Thermal stability

*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) = 0.54

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%

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: 020132-2026

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Component MPL 20x5x5 / N38 features a low profile and industrial pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 43.32 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 4.42 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

They constitute a key element in the production of generators and material handling systems. They work great as fasteners under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 20x5x5 / N38 model is magnetized through the thickness (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.

The presented product is a neodymium magnet with precisely defined parameters: 20 mm (length), 5 mm (width), and 5 mm (thickness). The key parameter here is the holding force amounting to approximately 4.42 kg (force ~43.32 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Benefits

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
Magnets very well defend themselves against loss of magnetization caused by ambient magnetic noise,
The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to look better,
The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures reaching 230°C and above...
Thanks to flexibility in designing and the capacity to customize to complex applications,
Key role in electronics industry – they are commonly used in mass storage devices, brushless drives, medical equipment, and multitasking production systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Due to limitations in producing threads and complicated shapes in magnets, we recommend using a housing - magnetic holder.
Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, small elements of these magnets can be problematic in diagnostics medical when they are in the body.
With budget limitations the cost of neodymium magnets is a challenge,

Pull force analysis

Maximum holding power of the magnet – what affects it?

Information about lifting capacity is the result of a measurement for the most favorable conditions, including:

with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
with a cross-section minimum 10 mm
with an ground touching surface
with zero gap (no paint)
under perpendicular application of breakaway force (90-degree angle)
at standard ambient temperature

Practical aspects of lifting capacity – factors

Holding efficiency is influenced by specific conditions, such as (from most important):

Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
Surface structure – the more even the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

H&S for magnets

Fragile material

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Impact on smartphones

A strong magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets near a smartphone to prevent breaking the sensors.

Nickel coating and allergies

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop handling magnets and wear gloves.

Product not for children

Always keep magnets away from children. Choking hazard is significant, and the consequences of magnets clamping inside the body are life-threatening.

Implant safety

Patients with a pacemaker must keep an large gap from magnets. The magnetism can stop the functioning of the implant.

Dust is flammable

Fire warning: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.

Power loss in heat

Keep cool. Neodymium magnets are susceptible to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Respect the power

Before use, check safety instructions. Sudden snapping can break the magnet or injure your hand. Be predictive.

Physical harm

Watch your fingers. Two powerful magnets will join instantly with a force of massive weight, destroying everything in their path. Be careful!

Safe distance

Avoid bringing magnets near a purse, computer, or screen. The magnetism can destroy these devices and erase data from cards.

Warning! Need more info? Check our post: Why are neodymium magnets dangerous?

MPL 20x5x5 / N38 - lamellar magnet

Technical of the product - MPL 20x5x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

Table 1: Static force (force vs distance) - characteristics MPL 20x5x5 / N38

Table 2: Shear force (vertical surface) MPL 20x5x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 20x5x5 / N38

Table 4: Steel thickness (saturation) - power losses MPL 20x5x5 / N38

Table 5: Thermal stability (material behavior) - power drop MPL 20x5x5 / N38

Table 6: Two magnets (attraction) - field range MPL 20x5x5 / N38

Table 7: Protective zones (electronics) - warnings MPL 20x5x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects MPL 20x5x5 / N38

Table 9: Surface protection spec MPL 20x5x5 / N38

Table 10: Construction data (Pc) MPL 20x5x5 / N38

Table 11: Physics of underwater searching MPL 20x5x5 / N38

1. Vertical hold

2. Steel saturation

3. Thermal stability

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

Material specification

Environmental data

Force (pull)

Magnetic Field

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UMP 75x25 [M10x3] GW F200 GOLD Lina / N42 - search holder

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Weaknesses

Pull force analysis

Maximum holding power of the magnet – what affects it?

Practical aspects of lifting capacity – factors

H&S for magnets

Fragile material

Impact on smartphones

Nickel coating and allergies

Product not for children

Implant safety

Dust is flammable

Power loss in heat

Respect the power

Physical harm

Safe distance

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - characteristics
MPL 20x5x5 / N38

Table 2: Shear force (vertical surface)
MPL 20x5x5 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 20x5x5 / N38

Table 4: Steel thickness (saturation) - power losses
MPL 20x5x5 / N38

Table 5: Thermal stability (material behavior) - power drop
MPL 20x5x5 / N38

Table 6: Two magnets (attraction) - field range
MPL 20x5x5 / N38

Table 7: Protective zones (electronics) - warnings
MPL 20x5x5 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MPL 20x5x5 / N38

Table 9: Surface protection spec
MPL 20x5x5 / N38

Table 10: Construction data (P_c)
MPL 20x5x5 / N38

Table 11: Physics of underwater searching
MPL 20x5x5 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.