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MPL 7x7x3 / N38 - lamellar 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

lamellar magnet

Catalog no 020176

GTIN/EAN: 5906301811824

5.00

length

7 mm [±0,1 mm]

Width

7 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.1 g

Magnetization Direction

↑ axial

Load capacity

1.60 kg / 15.70 N

Magnetic Induction

376.99 mT / 3770 Gs

Coating

[NiCuNi] Nickel

technical parameters »

0.541 ZŁ with VAT / pcs + price for transport

0.440 ZŁ net + 23% VAT / pcs

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Technical of the product - MPL 7x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 7x7x3 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020176
GTIN/EAN	5906301811824
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	7 mm [±0,1 mm]
Width	7 mm [±0,1 mm]
Height	3 mm [±0,1 mm]
Weight	1.1 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.60 kg / 15.70 N
Magnetic Induction ~ ?	376.99 mT / 3770 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 7x7x3 / 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

Engineering analysis of the magnet - report

Presented information are the result of a physical calculation. Values were calculated on algorithms for the class Nd₂Fe₁₄B. Real-world performance might slightly differ. Treat these data as a supplementary guide for designers.

Table 1: Static force (force vs distance) - interaction chart
MPL 7x7x3 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3767 Gs 376.7 mT	1.60 kg / 3.53 pounds 1600.0 g / 15.7 N	weak grip
1 mm	2886 Gs 288.6 mT	0.94 kg / 2.07 pounds 939.5 g / 9.2 N	weak grip
2 mm	2048 Gs 204.8 mT	0.47 kg / 1.04 pounds 472.8 g / 4.6 N	weak grip
3 mm	1412 Gs 141.2 mT	0.22 kg / 0.50 pounds 224.8 g / 2.2 N	weak grip
5 mm	686 Gs 68.6 mT	0.05 kg / 0.12 pounds 53.0 g / 0.5 N	weak grip
10 mm	165 Gs 16.5 mT	0.00 kg / 0.01 pounds 3.1 g / 0.0 N	weak grip
15 mm	60 Gs 6.0 mT	0.00 kg / 0.00 pounds 0.4 g / 0.0 N	weak grip
20 mm	28 Gs 2.8 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	weak grip
30 mm	9 Gs 0.9 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
50 mm	2 Gs 0.2 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Magnetic force drops drastically per each millimeter of gap. Remember that even the smallest gap (e.g., contamination, varnish, rust) strongly diminishes the holding power. Magnets hold strongest during direct contact; air break kills the force. See how rapidly the parameters plummet, when the magnet does not adhere flatly to the metal substrate. When planning the arrangement, avoid unnecessary gaps.

Table 2: Sliding hold (vertical surface)
MPL 7x7x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.32 kg / 0.71 pounds 320.0 g / 3.1 N
1 mm	Stal (~0.2)	0.19 kg / 0.41 pounds 188.0 g / 1.8 N
2 mm	Stal (~0.2)	0.09 kg / 0.21 pounds 94.0 g / 0.9 N
3 mm	Stal (~0.2)	0.04 kg / 0.10 pounds 44.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.02 pounds 10.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 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 table below presents the theoretical weight limit needed to start the sliding of the magnet down on a vertical metal surface (considering typical friction). This parameter is a function of the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 7x7x3 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.48 kg / 1.06 pounds 480.0 g / 4.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.32 kg / 0.71 pounds 320.0 g / 3.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.16 kg / 0.35 pounds 160.0 g / 1.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.80 kg / 1.76 pounds 800.0 g / 7.8 N

When placing a magnet on a vertical plane (e.g., a fridge), it will only hold barely approx. 1/5 of its maximum pull force. Gravity and a low friction coefficient cause that magnets slide down easier than they detach. Planning a hanger? Remember that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a noticeably lighter weight. Using a rubber coating can effectively increase the grip.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 7x7x3 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.16 kg / 0.35 pounds 160.0 g / 1.6 N
1 mm	25%	0.40 kg / 0.88 pounds 400.0 g / 3.9 N
2 mm	50%	0.80 kg / 1.76 pounds 800.0 g / 7.8 N
3 mm	75%	1.20 kg / 2.65 pounds 1200.0 g / 11.8 N
5 mm	100%	1.60 kg / 3.53 pounds 1600.0 g / 15.7 N
10 mm	100%	1.60 kg / 3.53 pounds 1600.0 g / 15.7 N
11 mm	100%	1.60 kg / 3.53 pounds 1600.0 g / 15.7 N
12 mm	100%	1.60 kg / 3.53 pounds 1600.0 g / 15.7 N

A too thin steel cannot take in the entire magnetic field, which squanders power of the magnet. Should you attach a powerful product to a weak sheet, the magnetism will pass right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the holder shows lower pull force. We recommend selecting the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - power drop
MPL 7x7x3 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.60 kg / 3.53 pounds 1600.0 g / 15.7 N	OK
40 °C	-2.2%	1.56 kg / 3.45 pounds 1564.8 g / 15.4 N	OK
60 °C	-4.4%	1.53 kg / 3.37 pounds 1529.6 g / 15.0 N
80 °C	-6.6%	1.49 kg / 3.29 pounds 1494.4 g / 14.7 N
100 °C	-28.8%	1.14 kg / 2.51 pounds 1139.2 g / 11.2 N

Standard neodymium magnets change their properties power after exceeding the maximum temperature. Watch out for overheating – excessive heat can irreversibly damage this product. As the temperature rises, the magnet's force momentarily drops. Refrain from using this magnet close to heaters higher than its working range. Too high temperature will cause destruction of magnetic properties.

*Technical advisory: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) may lose charge permanently at lower temperatures than long magnets. Warning indicator in the table signals permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MPL 7x7x3 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.29 kg / 9.45 pounds 5 173 Gs	0.64 kg / 1.42 pounds 643 g / 6.3 N	N/A
1 mm	3.38 kg / 7.44 pounds 6 685 Gs	0.51 kg / 1.12 pounds 506 g / 5.0 N	3.04 kg / 6.70 pounds ~0 Gs
2 mm	2.52 kg / 5.55 pounds 5 773 Gs	0.38 kg / 0.83 pounds 378 g / 3.7 N	2.27 kg / 4.99 pounds ~0 Gs
3 mm	1.81 kg / 3.99 pounds 4 893 Gs	0.27 kg / 0.60 pounds 271 g / 2.7 N	1.63 kg / 3.59 pounds ~0 Gs
5 mm	0.88 kg / 1.93 pounds 3 405 Gs	0.13 kg / 0.29 pounds 131 g / 1.3 N	0.79 kg / 1.74 pounds ~0 Gs
10 mm	0.14 kg / 0.31 pounds 1 372 Gs	0.02 kg / 0.05 pounds 21 g / 0.2 N	0.13 kg / 0.28 pounds ~0 Gs
20 mm	0.01 kg / 0.02 pounds 329 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 30 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 18 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 12 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 8 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 6 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 4 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a magnet and steel setup. The setup of two magnets generates a stronger field and a larger range of action. Designing a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the collision energy is massive. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction between like poles reaches ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Note: Results show friction force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 7x7x3 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	4.0 cm
Hearing aid	10 Gs (1.0 mT)	3.0 cm
Mechanical watch	20 Gs (2.0 mT)	2.5 cm
Mobile device	40 Gs (4.0 mT)	2.0 cm
Remote	50 Gs (5.0 mT)	2.0 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 is a serious hazard to IT equipment as well as medical implants. These NdFeB products generate a flux that disrupts operation of digital equipment. Notice: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - warning
MPL 7x7x3 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	38.51 km/h (10.70 m/s)	0.06 J
30 mm	66.62 km/h (18.51 m/s)	0.19 J
50 mm	86.01 km/h (23.89 m/s)	0.31 J
100 mm	121.63 km/h (33.79 m/s)	0.63 J

Neodymium magnets are prone to chipping – a collision with steel risks their cracking. Watch the impact speed – a neodymium left loose speeds with massive force. Striking energy can trigger coating fragments or painful pinches to skin. Always hold the magnet during mounting so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when playing with large magnets.

Table 9: Surface protection spec
MPL 7x7x3 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MPL 7x7x3 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 909 Mx	19.1 µWb
P_c Coefficient	0.48	Low (Flat)

Flux value emitted by the pole surface. Key data when building generators as well as sensors. P_c value defines the working geometry.

Table 11: Physics of underwater searching
MPL 7x7x3 / N38

Environment	Effective steel pull	Effect
Air (land)	1.60 kg	Standard
Water (riverbed)	1.83 kg (+0.23 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Sliding resistance

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

2. Plate thickness effect

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

3. Power loss vs temp

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.48

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 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%

Sustainability

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: 020176-2026

Quick Unit Converter

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 7x7x3 mm and a weight of 1.1 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 1.60 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

The key to success is sliding the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. To separate the MPL 7x7x3 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

Plate magnets MPL 7x7x3 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.

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 7x7x3 / N38 model is magnetized axially (dimension 3 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. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

The presented product is a neodymium magnet with precisely defined parameters: 7 mm (length), 7 mm (width), and 3 mm (thickness). It is a magnetic block with dimensions 7x7x3 mm and a self-weight of 1.1 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of neodymium magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (in laboratory conditions),
They are resistant to demagnetization induced by external field influence,
In other words, due to the glossy layer of silver, the element gains visual value,
Neodymium magnets ensure maximum magnetic induction on a small surface, which allows for strong attraction,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of detailed shaping as well as modifying to specific conditions,
Versatile presence in future technologies – they are used in magnetic memories, electric drive systems, medical devices, also multitasking production systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
Neodymium magnets lose their strength 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 stability even at temperatures up to 230°C
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited ability of producing nuts in the magnet and complicated shapes - preferred is a housing - magnetic holder.
Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these devices can be problematic in diagnostics medical after entering the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum holding power of the magnet – what it depends on?

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

on a base made of mild steel, perfectly concentrating the magnetic flux
whose thickness equals approx. 10 mm
with a surface perfectly flat
under conditions of ideal adhesion (surface-to-surface)
for force applied at a right angle (pull-off, not shear)
at room temperature

Magnet lifting force in use – key factors

Please note that the application force may be lower subject to the following factors, in order of importance:

Distance – existence of foreign body (rust, dirt, air) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Steel thickness – too thin plate causes magnetic saturation, causing part of the flux to be escaped into the air.
Plate material – low-carbon steel gives the best results. Alloy admixtures decrease magnetic properties and lifting capacity.
Smoothness – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate reduces the holding force.

Safety rules for work with NdFeB magnets

Maximum temperature

Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. The loss of strength is permanent.

No play value

Always keep magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Physical harm

Mind your fingers. Two large magnets will join immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Dust explosion hazard

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Safe distance

Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can permanently damage these devices and erase data from cards.

Beware of splinters

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Pacemakers

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Do not underestimate power

Handle with care. Rare earth magnets act from a long distance and snap with huge force, often quicker than you can react.

Compass and GPS

A strong magnetic field interferes with the operation of magnetometers in phones and navigation systems. Do not bring magnets close to a smartphone to prevent damaging the sensors.

Nickel coating and allergies

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation appears, immediately stop handling magnets and use protective gear.

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

MPL 7x7x3 / N38 - lamellar magnet

Technical of the product - MPL 7x7x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - report

Table 1: Static force (force vs distance) - interaction chart MPL 7x7x3 / N38

Table 2: Sliding hold (vertical surface) MPL 7x7x3 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MPL 7x7x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 7x7x3 / N38

Table 5: Thermal resistance (material behavior) - power drop MPL 7x7x3 / N38

Table 6: Two magnets (attraction) - forces in the system MPL 7x7x3 / N38

Table 7: Safety (HSE) (implants) - precautionary measures MPL 7x7x3 / N38

Table 8: Impact energy (cracking risk) - warning MPL 7x7x3 / N38

Table 9: Surface protection spec MPL 7x7x3 / N38

Table 10: Electrical data (Pc) MPL 7x7x3 / N38

Table 11: Physics of underwater searching MPL 7x7x3 / N38

1. Sliding resistance

2. Plate thickness effect

3. Power loss vs temp

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

Elemental analysis

Sustainability

Magnet pull force

Magnetic Induction

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Pros and cons of neodymium magnets.

Pros

Disadvantages

Pull force analysis

Maximum holding power of the magnet – what it depends on?

Magnet lifting force in use – key factors

Safety rules for work with NdFeB magnets

Maximum temperature

No play value

Physical harm

Dust explosion hazard

Safe distance

Beware of splinters

Pacemakers

Do not underestimate power

Compass and GPS

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - interaction chart
MPL 7x7x3 / N38

Table 2: Sliding hold (vertical surface)
MPL 7x7x3 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 7x7x3 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 7x7x3 / N38

Table 5: Thermal resistance (material behavior) - power drop
MPL 7x7x3 / N38

Table 6: Two magnets (attraction) - forces in the system
MPL 7x7x3 / N38

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 7x7x3 / N38

Table 8: Impact energy (cracking risk) - warning
MPL 7x7x3 / N38

Table 9: Surface protection spec
MPL 7x7x3 / N38

Table 10: Electrical data (P_c)
MPL 7x7x3 / N38

Table 11: Physics of underwater searching
MPL 7x7x3 / N38