MPL 40x10x4x2[7/3.5] / N38 - lamellar magnet

Product available Ships today (order by 14:00)

MPL 40x10x4x2[7/3.5] / 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 020151

GTIN/EAN: 5906301811572

length

40 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

12 g

Magnetization Direction

↑ axial

Load capacity

9.31 kg / 91.33 N

Magnetic Induction

275.57 mT / 2756 Gs

Coating

[NiCuNi] Nickel

check parameters »

9.21 ZŁ with VAT / pcs + price for transport

7.49 ZŁ net + 23% VAT / pcs

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Technical - MPL 40x10x4x2[7/3.5] / N38 - lamellar magnet

Specification / characteristics - MPL 40x10x4x2[7/3.5] / N38 - lamellar magnet

properties

properties	values
Cat. no.	020151
GTIN/EAN	5906301811572
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	10 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	12 g
Magnetization Direction	↑ axial
Load capacity ~ ?	9.31 kg / 91.33 N
Magnetic Induction ~ ?	275.57 mT / 2756 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x10x4x2[7/3.5] / 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 product - technical parameters

Presented values constitute the direct effect of a engineering analysis. Values were calculated on models for the material Nd₂Fe₁₄B. Real-world conditions might slightly deviate from the simulation results. Treat these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs gap) - power drop
MPL 40x10x4x2[7/3.5] / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2755 Gs 275.5 mT	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N	warning
1 mm	2413 Gs 241.3 mT	7.14 kg / 15.75 pounds 7143.1 g / 70.1 N	warning
2 mm	2044 Gs 204.4 mT	5.13 kg / 11.31 pounds 5128.9 g / 50.3 N	warning
3 mm	1703 Gs 170.3 mT	3.56 kg / 7.85 pounds 3559.5 g / 34.9 N	warning
5 mm	1173 Gs 117.3 mT	1.69 kg / 3.72 pounds 1688.2 g / 16.6 N	safe
10 mm	522 Gs 52.2 mT	0.33 kg / 0.74 pounds 334.9 g / 3.3 N	safe
15 mm	277 Gs 27.7 mT	0.09 kg / 0.21 pounds 94.2 g / 0.9 N	safe
20 mm	163 Gs 16.3 mT	0.03 kg / 0.07 pounds 32.8 g / 0.3 N	safe
30 mm	69 Gs 6.9 mT	0.01 kg / 0.01 pounds 5.8 g / 0.1 N	safe
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 pounds 0.5 g / 0.0 N	safe

Grip strength weakens sharply with every subsequent millimeter of gap. Keep in mind that even a microscopic distance (e.g., dirt, varnish, veneer) noticeably diminishes the holding power. Magnets hold strongest at the point of direct contact; distance weakens the power. Observe how quickly the pull force drop, when the product does not touch flatly to the steel surface. When calculating the arrangement, avoid unnecessary gaps.

Table 2: Shear hold (wall)
MPL 40x10x4x2[7/3.5] / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.86 kg / 4.11 pounds 1862.0 g / 18.3 N
1 mm	Stal (~0.2)	1.43 kg / 3.15 pounds 1428.0 g / 14.0 N
2 mm	Stal (~0.2)	1.03 kg / 2.26 pounds 1026.0 g / 10.1 N
3 mm	Stal (~0.2)	0.71 kg / 1.57 pounds 712.0 g / 7.0 N
5 mm	Stal (~0.2)	0.34 kg / 0.75 pounds 338.0 g / 3.3 N
10 mm	Stal (~0.2)	0.07 kg / 0.15 pounds 66.0 g / 0.6 N
15 mm	Stal (~0.2)	0.02 kg / 0.04 pounds 18.0 g / 0.2 N
20 mm	Stal (~0.2)	0.01 kg / 0.01 pounds 6.0 g / 0.1 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data indicates the approximate holding capacity needed to initiate the slippage of the magnet vertically against a upright steel wall (considering typical friction coefficient). The holding force varies with the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 40x10x4x2[7/3.5] / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.79 kg / 6.16 pounds 2793.0 g / 27.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.86 kg / 4.11 pounds 1862.0 g / 18.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.93 kg / 2.05 pounds 931.0 g / 9.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	4.66 kg / 10.26 pounds 4655.0 g / 45.7 N

When placing a element on a vertical surface (e.g., a fridge), it will maintain just approx. 1/5 of its nominal power. Gravitational force and a weak degree of grip influence the fact that products slip easier than they detach. Want to create a hanger? Consider that the shear force is significantly lower than the maximum static pull force. On a smooth steel, the holder will give way down under a significantly smaller cargo. Using a rubber pad can significantly increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MPL 40x10x4x2[7/3.5] / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.93 kg / 2.05 pounds 931.0 g / 9.1 N
1 mm	25%	2.33 kg / 5.13 pounds 2327.5 g / 22.8 N
2 mm	50%	4.66 kg / 10.26 pounds 4655.0 g / 45.7 N
3 mm	75%	6.98 kg / 15.39 pounds 6982.5 g / 68.5 N
5 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N
10 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N
11 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N
12 mm	100%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N

A thin metal plate is incapable of focus the entire magnetic field, which wastes potential of the magnet. If you install a neodymium to a weak sheet, the field will penetrate right through and the holding will be smaller. To squeeze 100% of this neodymium's power, you need a suitably thick piece of metal. The saturation effect means that on delicate walls (e.g., thin profiles), the magnet works worse. We recommend selecting the steel dimension based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x10x4x2[7/3.5] / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	9.31 kg / 20.53 pounds 9310.0 g / 91.3 N	OK
40 °C	-2.2%	9.11 kg / 20.07 pounds 9105.2 g / 89.3 N	OK
60 °C	-4.4%	8.90 kg / 19.62 pounds 8900.4 g / 87.3 N
80 °C	-6.6%	8.70 kg / 19.17 pounds 8695.5 g / 85.3 N
100 °C	-28.8%	6.63 kg / 14.61 pounds 6628.7 g / 65.0 N

Standard neodymium magnets irreversibly lose power after exceeding the maximum temperature. Protect against heat – high temperature can permanently damage this product. With every degree above norm, the neodymium's capacity temporarily lowers. Avoid using this product close to heaters higher than its operating temperature limit. Ignoring the limit will result in destruction of magnetic properties.

*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low Pc) risk losing magnetic properties under lower heat stress than long magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 40x10x4x2[7/3.5] / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	18.71 kg / 41.25 pounds 4 164 Gs	2.81 kg / 6.19 pounds 2807 g / 27.5 N	N/A
1 mm	16.57 kg / 36.53 pounds 5 185 Gs	2.49 kg / 5.48 pounds 2486 g / 24.4 N	14.91 kg / 32.88 pounds ~0 Gs
2 mm	14.36 kg / 31.65 pounds 4 826 Gs	2.15 kg / 4.75 pounds 2153 g / 21.1 N	12.92 kg / 28.48 pounds ~0 Gs
3 mm	12.24 kg / 26.98 pounds 4 455 Gs	1.84 kg / 4.05 pounds 1836 g / 18.0 N	11.01 kg / 24.28 pounds ~0 Gs
5 mm	8.61 kg / 18.98 pounds 3 737 Gs	1.29 kg / 2.85 pounds 1291 g / 12.7 N	7.75 kg / 17.08 pounds ~0 Gs
10 mm	3.39 kg / 7.48 pounds 2 346 Gs	0.51 kg / 1.12 pounds 509 g / 5.0 N	3.05 kg / 6.73 pounds ~0 Gs
20 mm	0.67 kg / 1.48 pounds 1 045 Gs	0.10 kg / 0.22 pounds 101 g / 1.0 N	0.61 kg / 1.34 pounds ~0 Gs
50 mm	0.03 kg / 0.06 pounds 207 Gs	0.00 kg / 0.01 pounds 4 g / 0.0 N	0.02 kg / 0.05 pounds ~0 Gs
60 mm	0.01 kg / 0.03 pounds 138 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs
70 mm	0.01 kg / 0.01 pounds 96 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.01 pounds 69 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 51 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 39 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets attract each other from a significantly greater distance than a magnet and steel setup. The connection of magnet-to-magnet produces a massive flux and a further horizon of action. Designing a strong closure? Utilize two neodymiums instead of one magnet and a striker plate. Be careful that when bringing together two magnets, the impact force is extreme. The repulsion force is slightly lower than the connection force, but still impressive.
*Field value between like poles reaches ~0 Gs at the midpoint between the magnets (due to field cancellation).
* Estimates apply to shear force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (electronics) - precautionary measures
MPL 40x10x4x2[7/3.5] / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	8.5 cm
Hearing aid	10 Gs (1.0 mT)	6.5 cm
Timepiece	20 Gs (2.0 mT)	5.0 cm
Mobile device	40 Gs (4.0 mT)	4.0 cm
Remote	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation poses a serious hazard to electronics as well as medical implants. These NdFeB products produce a field that destroys function of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and housings. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - collision effects
MPL 40x10x4x2[7/3.5] / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	28.72 km/h (7.98 m/s)	0.38 J
30 mm	48.67 km/h (13.52 m/s)	1.10 J
50 mm	62.82 km/h (17.45 m/s)	1.83 J
100 mm	88.83 km/h (24.68 m/s)	3.65 J

Magnetic elements are very brittle – a collision with steel causes immediate chipping. Watch the impact speed – a neodymium left loose becomes dangerous. Impact energy can cause material chips or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MPL 40x10x4x2[7/3.5] / 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 (Flux)
MPL 40x10x4x2[7/3.5] / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	9 840 Mx	98.4 µWb
P_c Coefficient	0.26	Low (Flat)

Total magnetic flux passing through the magnet pole. Essential parameter when building generators as well as sensors. The P_c coefficient defines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 40x10x4x2[7/3.5] / N38

Environment	Effective steel pull	Effect
Air (land)	9.31 kg	Standard
Water (riverbed)	10.66 kg (+1.35 kg buoyancy gain)	+14.5%

Rust risk: 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. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Warning: On a vertical wall, the magnet holds merely approx. 20-30% of its max power.

2. Steel thickness impact

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

3. Thermal stability

*For N38 material, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.26

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: 020151-2026

Measurement Calculator

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This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 40x10x4 mm and a weight of 12 g, guarantees the highest quality connection. This magnetic block with a force of 91.33 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

Separating strong flat 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 9.31 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 wind generators and material handling systems. Thanks to the flat surface and high force (approx. 9.31 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.

For mounting flat magnets MPL 40x10x4x2[7/3.5] / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. 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 (40x10 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 40x10x4 mm, which, at a weight of 12 g, makes it an element with impressive energy density. The key parameter here is the holding force amounting to approximately 9.31 kg (force ~91.33 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Strengths

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

Their power remains stable, and after approximately 10 years it drops only by ~1% (theoretically),
Neodymium magnets are distinguished by extremely resistant to magnetic field loss caused by external magnetic fields,
By using a smooth layer of nickel, the element has an aesthetic look,
Neodymium magnets deliver maximum magnetic induction on a small area, which allows for strong attraction,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
In view of the option of free molding and customization to custom needs, NdFeB magnets can be created in a broad palette of shapes and sizes, which expands the range of possible applications,
Significant place in future technologies – they find application in data components, drive modules, medical devices, as well as modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in small systems

Weaknesses

Cons of neodymium magnets: application proposals

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength 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
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited ability of producing threads in the magnet and complex forms - recommended is a housing - mounting mechanism.
Health risk related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets are able to be problematic in diagnostics medical when they are in the body.
Due to complex production process, their price exceeds standard values,

Holding force characteristics

Highest magnetic holding force – what contributes to it?

The specified lifting capacity concerns the limit force, recorded under ideal test conditions, meaning:

with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
possessing a thickness of at least 10 mm to avoid saturation
with an ground touching surface
under conditions of ideal adhesion (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
at ambient temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

In practice, the real power results from many variables, presented from crucial:

Distance – the presence of any layer (paint, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Plate material – mild steel attracts best. Higher carbon content decrease magnetic properties and holding force.
Plate texture – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces reduce efficiency.
Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Warnings

Handling rules

Handle with care. Neodymium magnets act from a distance and connect with huge force, often faster than you can react.

Data carriers

Intense magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.

Compass and GPS

GPS units and mobile phones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Avoid contact if allergic

Some people experience a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching can result in an allergic reaction. We strongly advise wear protective gloves.

ICD Warning

Warning for patients: Strong magnetic fields disrupt electronics. Keep at least 30 cm distance or request help to handle the magnets.

Fire warning

Drilling and cutting of neodymium magnets carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

No play value

Neodymium magnets are not toys. Accidental ingestion of a few magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.

Bone fractures

Danger of trauma: The attraction force is so immense that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.

Maximum temperature

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Magnets are brittle

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets will cause them breaking into small pieces.

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

MPL 40x10x4x2[7/3.5] / N38 - lamellar magnet

Technical - MPL 40x10x4x2[7/3.5] / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the product - technical parameters

Table 1: Static force (pull vs gap) - power drop MPL 40x10x4x2[7/3.5] / N38

Table 2: Shear hold (wall) MPL 40x10x4x2[7/3.5] / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MPL 40x10x4x2[7/3.5] / N38

Table 4: Material efficiency (substrate influence) - power losses MPL 40x10x4x2[7/3.5] / N38

Table 5: Thermal stability (stability) - resistance threshold MPL 40x10x4x2[7/3.5] / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MPL 40x10x4x2[7/3.5] / N38

Table 7: Hazards (electronics) - precautionary measures MPL 40x10x4x2[7/3.5] / N38

Table 8: Impact energy (cracking risk) - collision effects MPL 40x10x4x2[7/3.5] / N38

Table 9: Corrosion resistance MPL 40x10x4x2[7/3.5] / N38

Table 10: Electrical data (Flux) MPL 40x10x4x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing) MPL 40x10x4x2[7/3.5] / N38

1. Vertical hold

2. Steel thickness impact

3. Thermal stability

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

Material specification

Environmental data

Magnet pull force

Magnetic Induction

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Strengths as well as weaknesses of rare earth magnets.

Strengths

Weaknesses

Holding force characteristics

Highest magnetic holding force – what contributes to it?

Practical aspects of lifting capacity – factors

Warnings

Handling rules

Data carriers

Compass and GPS

Avoid contact if allergic

ICD Warning

Fire warning

No play value

Bone fractures

Maximum temperature

Magnets are brittle

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MPL 40x10x4x2[7/3.5] / N38

Table 2: Shear hold (wall)
MPL 40x10x4x2[7/3.5] / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MPL 40x10x4x2[7/3.5] / N38

Table 4: Material efficiency (substrate influence) - power losses
MPL 40x10x4x2[7/3.5] / N38

Table 5: Thermal stability (stability) - resistance threshold
MPL 40x10x4x2[7/3.5] / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MPL 40x10x4x2[7/3.5] / N38

Table 7: Hazards (electronics) - precautionary measures
MPL 40x10x4x2[7/3.5] / N38

Table 8: Impact energy (cracking risk) - collision effects
MPL 40x10x4x2[7/3.5] / N38

Table 9: Corrosion resistance
MPL 40x10x4x2[7/3.5] / N38

Table 10: Electrical data (Flux)
MPL 40x10x4x2[7/3.5] / N38

Table 11: Underwater work (magnet fishing)
MPL 40x10x4x2[7/3.5] / N38