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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
Rating: 5

lamellar magnet

Catalog no 020162

GTIN/EAN: 5906301811688

5.00

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

view technical specifications »

2.79 ZŁ with VAT / pcs + price for transport

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Technical of the product - 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
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 magnet - report

Presented values represent the direct effect of a mathematical calculation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance may differ. Use these data as a reference point for designers.

Table 1: Static pull force (force 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 lbs 7140.0 g / 70.0 N	medium risk
1 mm	2314 Gs 231.4 mT	4.73 kg / 10.43 lbs 4729.9 g / 46.4 N	medium risk
2 mm	1788 Gs 178.8 mT	2.83 kg / 6.23 lbs 2825.3 g / 27.7 N	medium risk
3 mm	1365 Gs 136.5 mT	1.65 kg / 3.63 lbs 1645.1 g / 16.1 N	safe
5 mm	824 Gs 82.4 mT	0.60 kg / 1.32 lbs 599.2 g / 5.9 N	safe
10 mm	317 Gs 31.7 mT	0.09 kg / 0.20 lbs 88.6 g / 0.9 N	safe
15 mm	160 Gs 16.0 mT	0.02 kg / 0.05 lbs 22.5 g / 0.2 N	safe
20 mm	92 Gs 9.2 mT	0.01 kg / 0.02 lbs 7.5 g / 0.1 N	safe
30 mm	38 Gs 3.8 mT	0.00 kg / 0.00 lbs 1.3 g / 0.0 N	safe
50 mm	11 Gs 1.1 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	safe

Grip strength weakens sharply with every mm of distance. Keep in mind that every additional insulation layer (e.g., dirt, paint, veneer) significantly reduces the pull force. Neodymiums hold most effectively at the point of direct contact; air break weakens the power. Analyze how quickly the pull force drop, when the magnet does not touch tightly to the metal substrate. When designing the mounting, discard unnecessary gaps.

Table 2: Sliding force (vertical surface)
MPL 40x7x3 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.43 kg / 3.15 lbs 1428.0 g / 14.0 N
1 mm	Stal (~0.2)	0.95 kg / 2.09 lbs 946.0 g / 9.3 N
2 mm	Stal (~0.2)	0.57 kg / 1.25 lbs 566.0 g / 5.6 N
3 mm	Stal (~0.2)	0.33 kg / 0.73 lbs 330.0 g / 3.2 N
5 mm	Stal (~0.2)	0.12 kg / 0.26 lbs 120.0 g / 1.2 N
10 mm	Stal (~0.2)	0.02 kg / 0.04 lbs 18.0 g / 0.2 N
15 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The table below shows the approximate holding capacity necessary to start the shifting of the magnet down against a upright metal surface (assuming typical friction coefficient). This parameter is a function of the air gap between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
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 lbs 2142.0 g / 21.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.43 kg / 3.15 lbs 1428.0 g / 14.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.71 kg / 1.57 lbs 714.0 g / 7.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.57 kg / 7.87 lbs 3570.0 g / 35.0 N

When placing a holder on a vertical surface (e.g., a board), it will only hold barely approx. 20%-30% of its maximum pull force. Gravity as well as a low friction coefficient cause that products slide down easier than they detach. Want to create a vertical fastening? Note that the shear force is much weaker than the perpendicular breakaway force. On a smooth steel, the element will give way down under a much lighter load. Utilizing a rubberized coating can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - 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 lbs 714.0 g / 7.0 N
1 mm	25%	1.79 kg / 3.94 lbs 1785.0 g / 17.5 N
2 mm	50%	3.57 kg / 7.87 lbs 3570.0 g / 35.0 N
3 mm	75%	5.35 kg / 11.81 lbs 5355.0 g / 52.5 N
5 mm	100%	7.14 kg / 15.74 lbs 7140.0 g / 70.0 N
10 mm	100%	7.14 kg / 15.74 lbs 7140.0 g / 70.0 N
11 mm	100%	7.14 kg / 15.74 lbs 7140.0 g / 70.0 N
12 mm	100%	7.14 kg / 15.74 lbs 7140.0 g / 70.0 N

A thin sheet is incapable of absorb the entire magnetic field, which weakens actual performance of the holder. If you install a neodymium to a weak sheet, the flux will pass right through and the holding will be smaller. To squeeze full efficiency 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 shows lower pull force. We advise picking the steel thickness from these parameters.

Table 5: Working in heat (stability) - 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 lbs 7140.0 g / 70.0 N	OK
40 °C	-2.2%	6.98 kg / 15.39 lbs 6982.9 g / 68.5 N	OK
60 °C	-4.4%	6.83 kg / 15.05 lbs 6825.8 g / 67.0 N
80 °C	-6.6%	6.67 kg / 14.70 lbs 6668.8 g / 65.4 N
100 °C	-28.8%	5.08 kg / 11.21 lbs 5083.7 g / 49.9 N

Classic neodymiums irreversibly lose parameters past the thermal threshold. Protect against heat – high temperature can irreversibly damage this product. With every degree above norm, the magnet's power briefly decreases. Avoid using this magnet close to ovens exceeding its operating temperature limit. Exceeding the critical threshold will cause irreversible degradation of magnetic properties.

*Important note: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low Pc) are more susceptible to demagnetization under lower heat stress compared to rod magnets. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 40x7x3 / N38

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

Two strong neodymiums attract each other from a much further distance than a neodymium and metal combination. Such a system of two magnets generates a stronger field and a larger range of operation. Planning to create a strong closure? Apply two magnets instead of one magnet and a striker plate. Remember that when attracting two neodymiums, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still significant.
*The magnetic induction between like poles is approximately ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Calculations demonstrate friction force of a pair of matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Protective zones (implants) - warnings
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
Mobile device	40 Gs (4.0 mT)	3.0 cm
Remote	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

Extremely neodym field poses a large risk to IT equipment as well as medical implants. These neodymiums generate a flux that disrupts operation of digital equipment. Notice: the invisible magnetic field acts through matter and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, membranes, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

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

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.21 km/h (9.50 m/s)	0.28 J
30 mm	58.81 km/h (16.34 m/s)	0.84 J
50 mm	75.92 km/h (21.09 m/s)	1.40 J
100 mm	107.36 km/h (29.82 m/s)	2.80 J

Neodymium magnets are very brittle – a strong collision with metal can result in shattering. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Kinetic force can trigger coating fragments or injury to skin. Always hold the magnet during mounting so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the neodymium. Wear safety glasses when handling with powerful specimens.

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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Moisture resistance is crucial for installations in bathrooms or outdoors.

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. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
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%

Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

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 holds merely a fraction of its nominal pull.

2. Steel saturation

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

3. Power loss vs temp

*For N38 grade, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.24

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.

Technical and environmental data

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%

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: 020162-2026

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This product is a very powerful plate magnet made of NdFeB material, which, with dimensions of 40x7x3 mm and a weight of 6.3 g, guarantees the highest quality connection. This rectangular block with a force of 70.02 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.

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 7.14 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

Plate magnets MPL 40x7x3 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 7.14 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 40x7x3 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.

The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (40x7 mm), which is ideal for flat mounting. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.

This model is characterized by dimensions 40x7x3 mm, which, at a weight of 6.3 g, makes it an element with high energy density. It is a magnetic block with dimensions 40x7x3 mm and a self-weight of 6.3 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Benefits

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

They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (based on calculations),
They show high resistance to demagnetization induced by presence of other magnetic fields,
A magnet with a metallic nickel surface has an effective appearance,
The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
Considering the possibility of flexible shaping and customization to unique requirements, neodymium magnets can be manufactured in a broad palette of forms and dimensions, which amplifies use scope,
Versatile presence in advanced technology sectors – they are utilized in data components, brushless drives, medical equipment, as well as complex engineering applications.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Problematic aspects of neodymium magnets and proposals for their use:

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
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, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Limited ability of producing nuts in the magnet and complex forms - recommended is casing - mounting mechanism.
Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical after entering the body.
Due to neodymium price, their price is relatively high,

Holding force characteristics

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

The force parameter is a theoretical maximum value performed under specific, ideal conditions:

with the contact of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
whose transverse dimension equals approx. 10 mm
with an ideally smooth contact surface
without any insulating layer between the magnet and steel
for force applied at a right angle (pull-off, not shear)
in neutral thermal conditions

Magnet lifting force in use – key factors

During everyday use, the actual holding force results from many variables, ranked from the most important:

Clearance – the presence of any layer (rust, dirt, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets

Sensitization to coating

Medical facts indicate that nickel (the usual finish) is a potent allergen. If you have an allergy, refrain from direct skin contact or opt for coated magnets.

Choking Hazard

Only for adults. Small elements pose a choking risk, causing serious injuries. Keep away from kids and pets.

ICD Warning

Patients with a heart stimulator should maintain an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Shattering risk

Beware of splinters. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.

Immense force

Be careful. Rare earth magnets attract from a long distance and snap with huge force, often faster than you can react.

Combustion hazard

Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Maximum temperature

Avoid heat. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).

Bone fractures

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

Safe distance

Do not bring magnets near a purse, computer, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.

Phone sensors

An intense magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Danger! More info about risks in the article: Safety of working with magnets.

MPL 40x7x3 / N38 - lamellar magnet

Technical of the product - MPL 40x7x3 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - report

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

Table 2: Sliding force (vertical surface) MPL 40x7x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull MPL 40x7x3 / N38

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

Table 5: Working in heat (stability) - thermal limit MPL 40x7x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MPL 40x7x3 / N38

Table 7: Protective zones (implants) - warnings 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: Physics of underwater searching MPL 40x7x3 / N38

1. Shear force

2. Steel saturation

3. Power loss vs temp

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

Material specification

Sustainability

Pulling force

Magnetic Field

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Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Limitations

Holding force characteristics

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

Magnet lifting force in use – key factors

Safe handling of neodymium magnets

Sensitization to coating

Choking Hazard

ICD Warning

Shattering risk

Immense force

Combustion hazard

Maximum temperature

Bone fractures

Safe distance

Phone sensors

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

Table 2: Sliding force (vertical surface)
MPL 40x7x3 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MPL 40x7x3 / N38

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

Table 5: Working in heat (stability) - thermal limit
MPL 40x7x3 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 40x7x3 / N38

Table 7: Protective zones (implants) - warnings
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: Physics of underwater searching
MPL 40x7x3 / N38

Advantages and disadvantages of Nd₂Fe₁₄B magnets.