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MPL 40x7x3 / 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

lamellar magnet

Catalog no 020162

GTIN/EAN: 5906301811688

5.00

Load capacity 7.14 kg / 70.02 N Magnetic Induction 284.46 mT / 2845 Gs

length: 40 mm [±0,1 mm]
Width: 7 mm [±0,1 mm]
Height: 3 mm [±0,1 mm]
Weight: 6.3 g
Magnetization Direction: ↑ axial
Coating: [NiCuNi] Nickel

How we measure these parameters — certificates and measurements

see specifications »

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Frequently asked questions

How much will a block magnet really hold?

The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.

What is the maximum working temperature?

Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.

What safety factor should I allow?

At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Guides from the knowledge base

Engineering report for this magnet

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

PDF report Calculator

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical details - MPL 40x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 40x7x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020162
GTIN/EAN	5906301811688
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	40 mm [±0,1 mm]
Width	7 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	6.3 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.14 kg / 70.02 N
Magnetic Induction ~ ?	284.46 mT / 2845 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x7x3 / N38 - lamellar magnet

properties	values	units
Remanence Br ?	12.2-12.6	kGs
Remanence Br ?	1220-1260	mT
Coercivity bHc ?	10.8-11.5	kOe
Coercivity bHc ?	860-915	kA/m
Intrinsic coercivity iHc	≥ 12	kOe
Intrinsic coercivity iHc	≥ 955	kA/m
Energy product BHmax ?	36-38	BH max MGOe
Energy product BHmax ?	287-303	BH max KJ/m
Maximum working 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	310	°C
Curie Temperature TF	590	°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

Technical simulation of the assembly - technical parameters

Presented data are the outcome of a physical analysis. Values rely on algorithms for the material Nd₂Fe₁₄B. Actual parameters might slightly deviate from the simulation results. Treat these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MPL 40x7x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2843 Gs 284.3 mT	7.14 kg / 15.74 pounds 7140.0 g / 70.0 N	strong
1 mm	2314 Gs 231.4 mT	4.73 kg / 10.43 pounds 4729.9 g / 46.4 N	strong
2 mm	1788 Gs 178.8 mT	2.83 kg / 6.23 pounds 2825.3 g / 27.7 N	strong
3 mm	1365 Gs 136.5 mT	1.65 kg / 3.63 pounds 1645.1 g / 16.1 N	safe
5 mm	824 Gs 82.4 mT	0.60 kg / 1.32 pounds 599.2 g / 5.9 N	safe
10 mm	317 Gs 31.7 mT	0.09 kg / 0.20 pounds 88.6 g / 0.9 N	safe
15 mm	160 Gs 16.0 mT	0.02 kg / 0.05 pounds 22.5 g / 0.2 N	safe
20 mm	92 Gs 9.2 mT	0.01 kg / 0.02 pounds 7.5 g / 0.1 N	safe
30 mm	38 Gs 3.8 mT	0.00 kg / 0.00 pounds 1.3 g / 0.0 N	safe
50 mm	11 Gs 1.1 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe

Magnetic force decreases sharply with every mm of distance. Note that even a microscopic distance (e.g., dirt, paint, veneer) significantly diminishes the holding power. Magnetic products operate strongest at the point of direct contact; distance nullifies the force. Notice how flashily the parameters drop, when the magnet does not adhere flatly to the metal substrate. When calculating the assembly, eliminate additional spacers.

Table 2: Shear capacity (wall)
MPL 40x7x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.43 kg / 3.15 pounds 1428.0 g / 14.0 N
1 mm	Stal (~0.2)	0.95 kg / 2.09 pounds 946.0 g / 9.3 N
2 mm	Stal (~0.2)	0.57 kg / 1.25 pounds 566.0 g / 5.6 N
3 mm	Stal (~0.2)	0.33 kg / 0.73 pounds 330.0 g / 3.2 N
5 mm	Stal (~0.2)	0.12 kg / 0.26 pounds 120.0 g / 1.2 N
10 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 18.0 g / 0.2 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 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 presents the theoretical shear load necessary to start the downward movement of the magnet vertically on a vertical metal surface (assuming typical friction). This value varies with the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 40x7x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.14 kg / 4.72 pounds 2142.0 g / 21.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.43 kg / 3.15 pounds 1428.0 g / 14.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.71 kg / 1.57 pounds 714.0 g / 7.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.57 kg / 7.87 pounds 3570.0 g / 35.0 N

When placing a magnet on a vertical wall (e.g., a board), it will only hold just approx. 20%-30% of nominal attraction strength. Gravitational force as well as a weak degree of grip influence the fact that magnets move down easier than they pull off. Designing a vertical fastening? Remember that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will slide down under a significantly smaller load. Utilizing a rubberized layer can significantly increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x7x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.71 kg / 1.57 pounds 714.0 g / 7.0 N
1 mm	25%	1.79 kg / 3.94 pounds 1785.0 g / 17.5 N
2 mm	50%	3.57 kg / 7.87 pounds 3570.0 g / 35.0 N
3 mm	75%	5.35 kg / 11.81 pounds 5355.0 g / 52.5 N
5 mm	100%	7.14 kg / 15.74 pounds 7140.0 g / 70.0 N
10 mm	100%	7.14 kg / 15.74 pounds 7140.0 g / 70.0 N
11 mm	100%	7.14 kg / 15.74 pounds 7140.0 g / 70.0 N
12 mm	100%	7.14 kg / 15.74 pounds 7140.0 g / 70.0 N

A thin metal plate is unable to take in the full magnetic flux, which weakens actual performance of the holder. Should you mount a strong magnet to a thin surface, the field will penetrate right through and the holding will be smaller. To achieve full efficiency of this neodymium's power, you need a suitably thick element of steel. The saturation phenomenon causes that on thin elements (e.g., car bodies), the product holds weaker. We advise picking the steel cross-section based on the following data.

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x7x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.14 kg / 15.74 pounds 7140.0 g / 70.0 N	OK
40 °C	-2.2%	6.98 kg / 15.39 pounds 6982.9 g / 68.5 N	OK
60 °C	-4.4%	6.83 kg / 15.05 pounds 6825.8 g / 67.0 N
80 °C	-6.6%	6.67 kg / 14.70 pounds 6668.8 g / 65.4 N
100 °C	-28.8%	5.08 kg / 11.21 pounds 5083.7 g / 49.9 N

Standard neodymium magnets change their properties strength past the thermal threshold. Protect against heat – heat can irreversibly destroy this magnet. With increasing heat, the neodymium's force momentarily decreases. Do not use this magnet close to heaters exceeding its working range. Too high temperature will result in destruction of magnetic properties.

*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) risk losing magnetic properties sooner than long magnets. The danger warning in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MPL 40x7x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	13.95 kg / 30.75 pounds 4 204 Gs	2.09 kg / 4.61 pounds 2092 g / 20.5 N	N/A
1 mm	11.58 kg / 25.53 pounds 5 180 Gs	1.74 kg / 3.83 pounds 1737 g / 17.0 N	10.42 kg / 22.98 pounds ~0 Gs
2 mm	9.24 kg / 20.37 pounds 4 628 Gs	1.39 kg / 3.06 pounds 1386 g / 13.6 N	8.32 kg / 18.34 pounds ~0 Gs
3 mm	7.19 kg / 15.86 pounds 4 083 Gs	1.08 kg / 2.38 pounds 1079 g / 10.6 N	6.47 kg / 14.27 pounds ~0 Gs
5 mm	4.21 kg / 9.28 pounds 3 124 Gs	0.63 kg / 1.39 pounds 632 g / 6.2 N	3.79 kg / 8.36 pounds ~0 Gs
10 mm	1.17 kg / 2.58 pounds 1 647 Gs	0.18 kg / 0.39 pounds 176 g / 1.7 N	1.05 kg / 2.32 pounds ~0 Gs
20 mm	0.17 kg / 0.38 pounds 633 Gs	0.03 kg / 0.06 pounds 26 g / 0.3 N	0.16 kg / 0.34 pounds ~0 Gs
50 mm	0.01 kg / 0.01 pounds 115 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.01 pounds 76 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 53 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 38 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 28 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 21 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets interact from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet generates a stronger field and a further horizon of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a steel. Remember that when attracting two neodymiums, the collision energy is massive. The repulsion force is marginally weaker than the connection force, but still impressive.
*Field value between like poles is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Estimates apply to shear force of two identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MPL 40x7x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	7.0 cm
Hearing aid	10 Gs (1.0 mT)	5.5 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a serious hazard to electronic devices and medical implants. These neodymiums generate a flux that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MPL 40x7x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	24.74 km/h (6.87 m/s)	0.15 J
30 mm	25.01 km/h (6.95 m/s)	0.15 J
50 mm	25.01 km/h (6.95 m/s)	0.15 J
100 mm	25.02 km/h (6.95 m/s)	0.15 J

NdFeB products are prone to chipping – a strong collision with metal risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Striking energy can destroy the magnet or dangerous crushing to skin. Always hold the magnet during mounting so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Corrosion resistance
MPL 40x7x3 / 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 following table defines the conditions under which this product can be safely used. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (P_c)
MPL 40x7x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	6 379 Mx	63.8 µWb
P_c Coefficient	0.24	Low (Flat)

Flux value emitted by the pole surface. Essential parameter for generator designers and motors. P_c value defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 40x7x3 / N38

Environment	Effective steel pull	Effect
Air (land)	7.14 kg	Standard
Water (riverbed)	8.18 kg (+1.04 kg buoyancy gain)	+14.5%

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

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

1. Vertical hold

*Warning: On a vertical surface, the magnet retains only a fraction of its max power.

2. Steel saturation

*Thin steel (e.g. 0.5mm PC case) drastically limits 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) = 0.24

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

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%

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: 020162-2026

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Strengths and weaknesses of rare earth magnets.

Benefits

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

They have stable power, and over around ten years their performance decreases symbolically – ~1% (according to theory),
Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
A magnet with a metallic silver surface has an effective appearance,
Magnetic induction on the top side of the magnet turns out to be maximum,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
Possibility of individual machining and optimizing to concrete requirements,
Wide application in modern technologies – they are used in HDD drives, electromotive mechanisms, precision medical tools, as well as industrial machines.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in compact constructions

Limitations

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in producing threads and complicated shapes in magnets, we recommend using a housing - magnetic mechanism.
Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to be problematic in diagnostics medical after entering the body.
Due to expensive raw materials, their price is relatively high,

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

The force parameter is a theoretical maximum value executed under standard conditions:

on a base made of structural steel, optimally conducting the magnetic flux
possessing a thickness of at least 10 mm to ensure full flux closure
characterized by lack of roughness
without any clearance between the magnet and steel
during detachment in a direction perpendicular to the mounting surface
at ambient temperature room level

What influences lifting capacity in practice

Please note that the magnet holding will differ influenced by the following factors, starting with the most relevant:

Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of maximum force).
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
Material composition – not every steel attracts identically. Alloy additives worsen the interaction with the magnet.
Smoothness – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

H&S for magnets

Operating temperature

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Nickel allergy

Allergy Notice: The nickel-copper-nickel coating consists of nickel. If redness happens, cease handling magnets and use protective gear.

Mechanical processing

Powder created during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Beware of splinters

Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.

Impact on smartphones

GPS units and smartphones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Caution required

Handle magnets with awareness. Their huge power can surprise even professionals. Be vigilant and do not underestimate their power.

Implant safety

Individuals with a ICD must maintain an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Data carriers

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

Hand protection

Large magnets can crush fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Danger to the youngest

Product intended for adults. Small elements can be swallowed, leading to intestinal necrosis. Keep out of reach of kids and pets.

Security! Details about risks in the article: Safety of working with magnets.

MPL 40x7x3 / N38 - lamellar magnet

Technical details - MPL 40x7x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - technical parameters

Table 1: Static pull force (pull vs distance) - characteristics MPL 40x7x3 / N38

Table 2: Shear capacity (wall) MPL 40x7x3 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MPL 40x7x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 40x7x3 / N38

Table 5: Thermal resistance (material behavior) - thermal limit MPL 40x7x3 / N38

Table 6: Two magnets (attraction) - field range MPL 40x7x3 / N38

Table 7: Hazards (electronics) - precautionary measures MPL 40x7x3 / N38

Table 8: Collisions (cracking risk) - warning MPL 40x7x3 / N38

Table 9: Corrosion resistance MPL 40x7x3 / N38

Table 10: Electrical data (Pc) MPL 40x7x3 / N38

Table 11: Hydrostatics and buoyancy MPL 40x7x3 / N38

1. Vertical hold

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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MP 20x5x27 / N38 - ring magnet

Strengths and weaknesses of rare earth magnets.

Benefits

Limitations

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

What influences lifting capacity in practice

H&S for magnets

Operating temperature

Nickel allergy

Mechanical processing

Beware of splinters

Impact on smartphones

Caution required

Implant safety

Data carriers

Hand protection

Danger to the youngest

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MPL 40x7x3 / N38

Table 2: Shear capacity (wall)
MPL 40x7x3 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 40x7x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x7x3 / N38

Table 5: Thermal resistance (material behavior) - thermal limit
MPL 40x7x3 / N38

Table 6: Two magnets (attraction) - field range
MPL 40x7x3 / N38

Table 7: Hazards (electronics) - precautionary measures
MPL 40x7x3 / N38

Table 8: Collisions (cracking risk) - warning
MPL 40x7x3 / N38

Table 9: Corrosion resistance
MPL 40x7x3 / N38

Table 10: Electrical data (P_c)
MPL 40x7x3 / N38

Table 11: Hydrostatics and buoyancy
MPL 40x7x3 / N38