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MPL 80x40x15 / 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 020177

GTIN/EAN: 5906301811831

5.00

length

80 mm [±0,1 mm]

Width

40 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

360 g

Magnetization Direction

↑ axial

Load capacity

73.57 kg / 721.75 N

Magnetic Induction

285.78 mT / 2858 Gs

Coating

[NiCuNi] Nickel

view technical data »

139.54 ZŁ with VAT / pcs + price for transport

113.45 ZŁ net + 23% VAT / pcs

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Technical - MPL 80x40x15 / N38 - lamellar magnet

Specification / characteristics - MPL 80x40x15 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020177
GTIN/EAN	5906301811831
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	80 mm [±0,1 mm]
Width	40 mm [±0,1 mm]
Height	15 mm [±0,1 mm]
Weight	360 g
Magnetization Direction	↑ axial
Load capacity ~ ?	73.57 kg / 721.75 N
Magnetic Induction ~ ?	285.78 mT / 2858 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 80x40x15 / 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 modeling of the assembly - technical parameters

The following values represent the direct effect of a engineering calculation. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Operational performance may differ from theoretical values. Use these calculations as a preliminary roadmap for designers.

Table 1: Static force (pull vs gap) - power drop
MPL 80x40x15 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2857 Gs 285.7 mT	73.57 kg / 162.19 lbs 73570.0 g / 721.7 N	crushing
1 mm	2778 Gs 277.8 mT	69.55 kg / 153.32 lbs 69546.1 g / 682.2 N	crushing
2 mm	2693 Gs 269.3 mT	65.33 kg / 144.03 lbs 65331.2 g / 640.9 N	crushing
3 mm	2603 Gs 260.3 mT	61.05 kg / 134.59 lbs 61047.5 g / 598.9 N	crushing
5 mm	2415 Gs 241.5 mT	52.56 kg / 115.87 lbs 52559.7 g / 515.6 N	crushing
10 mm	1943 Gs 194.3 mT	34.02 kg / 75.00 lbs 34021.1 g / 333.7 N	crushing
15 mm	1527 Gs 152.7 mT	21.01 kg / 46.31 lbs 21007.7 g / 206.1 N	crushing
20 mm	1192 Gs 119.2 mT	12.81 kg / 28.24 lbs 12808.1 g / 125.6 N	crushing
30 mm	736 Gs 73.6 mT	4.89 kg / 10.77 lbs 4886.6 g / 47.9 N	medium risk
50 mm	313 Gs 31.3 mT	0.88 kg / 1.95 lbs 884.8 g / 8.7 N	weak grip

Grip strength decreases significantly with every mm of gap. Note that even the smallest gap (e.g., dirt, varnish, dust) noticeably reduces the pull force. Neodymiums hold optimally at the point of direct contact; air break drastically cuts the force. Analyze how rapidly the pull force plummet, when the magnet does not touch directly to the steel surface. When planning the mounting, avoid redundant distances.

Table 2: Vertical load (wall)
MPL 80x40x15 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	14.71 kg / 32.44 lbs 14714.0 g / 144.3 N
1 mm	Stal (~0.2)	13.91 kg / 30.67 lbs 13910.0 g / 136.5 N
2 mm	Stal (~0.2)	13.07 kg / 28.81 lbs 13066.0 g / 128.2 N
3 mm	Stal (~0.2)	12.21 kg / 26.92 lbs 12210.0 g / 119.8 N
5 mm	Stal (~0.2)	10.51 kg / 23.17 lbs 10512.0 g / 103.1 N
10 mm	Stal (~0.2)	6.80 kg / 15.00 lbs 6804.0 g / 66.7 N
15 mm	Stal (~0.2)	4.20 kg / 9.26 lbs 4202.0 g / 41.2 N
20 mm	Stal (~0.2)	2.56 kg / 5.65 lbs 2562.0 g / 25.1 N
30 mm	Stal (~0.2)	0.98 kg / 2.16 lbs 978.0 g / 9.6 N
50 mm	Stal (~0.2)	0.18 kg / 0.39 lbs 176.0 g / 1.7 N

The table below calculates the approximate force required to initiate the shifting of the magnet down on a upright steel plate (assuming standard friction coefficient). This parameter varies with the distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 80x40x15 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	22.07 kg / 48.66 lbs 22071.0 g / 216.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	14.71 kg / 32.44 lbs 14714.0 g / 144.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	7.36 kg / 16.22 lbs 7357.0 g / 72.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	36.79 kg / 81.10 lbs 36785.0 g / 360.9 N

When mounting a element on a vertical plane (e.g., a fridge), it will only hold only approx. 20%-30% of its nominal power. Gravitational force and a weak degree of grip influence the fact that products slide down easier than they pull off. Planning a wall mount? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the element will slide down under a significantly smaller load. Using a rubber pad can drastically raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 80x40x15 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	2.45 kg / 5.41 lbs 2452.3 g / 24.1 N
1 mm	8%	6.13 kg / 13.52 lbs 6130.8 g / 60.1 N
2 mm	17%	12.26 kg / 27.03 lbs 12261.7 g / 120.3 N
3 mm	25%	18.39 kg / 40.55 lbs 18392.5 g / 180.4 N
5 mm	42%	30.65 kg / 67.58 lbs 30654.2 g / 300.7 N
10 mm	83%	61.31 kg / 135.16 lbs 61308.3 g / 601.4 N
11 mm	92%	67.44 kg / 148.68 lbs 67439.2 g / 661.6 N
12 mm	100%	73.57 kg / 162.19 lbs 73570.0 g / 721.7 N

A thin metal plate is unable to take in the full magnetic flux, which wastes potential of the holder. If you attach a powerful product to a weak sheet, the flux will penetrate right through and the holding will be smaller. To squeeze full efficiency of this neodymium's power, you need a suitably thick backing of metal. The material oversaturation means that on delicate walls (e.g., car bodies), the magnet holds weaker. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MPL 80x40x15 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	73.57 kg / 162.19 lbs 73570.0 g / 721.7 N	OK
40 °C	-2.2%	71.95 kg / 158.63 lbs 71951.5 g / 705.8 N	OK
60 °C	-4.4%	70.33 kg / 155.06 lbs 70332.9 g / 690.0 N
80 °C	-6.6%	68.71 kg / 151.49 lbs 68714.4 g / 674.1 N
100 °C	-28.8%	52.38 kg / 115.48 lbs 52381.8 g / 513.9 N

Classic neodymiums lose power after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently destroy this product. With every degree above norm, the neodymium's capacity temporarily decreases. Avoid using this magnet close to heaters exceeding its operating temperature limit. Ignoring the limit will cause destruction of magnetism.

*Technical advisory: Thermal stability depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) may lose charge permanently sooner than taller cylinders. The danger warning in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 80x40x15 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	161.08 kg / 355.13 lbs 4 384 Gs	24.16 kg / 53.27 lbs 24163 g / 237.0 N	N/A
1 mm	156.77 kg / 345.63 lbs 5 638 Gs	23.52 kg / 51.84 lbs 23516 g / 230.7 N	141.10 kg / 311.07 lbs ~0 Gs
2 mm	152.27 kg / 335.70 lbs 5 556 Gs	22.84 kg / 50.36 lbs 22841 g / 224.1 N	137.05 kg / 302.13 lbs ~0 Gs
3 mm	147.69 kg / 325.60 lbs 5 472 Gs	22.15 kg / 48.84 lbs 22153 g / 217.3 N	132.92 kg / 293.04 lbs ~0 Gs
5 mm	138.36 kg / 305.04 lbs 5 297 Gs	20.75 kg / 45.76 lbs 20754 g / 203.6 N	124.53 kg / 274.53 lbs ~0 Gs
10 mm	115.08 kg / 253.71 lbs 4 830 Gs	17.26 kg / 38.06 lbs 17262 g / 169.3 N	103.57 kg / 228.34 lbs ~0 Gs
20 mm	74.49 kg / 164.22 lbs 3 886 Gs	11.17 kg / 24.63 lbs 11174 g / 109.6 N	67.04 kg / 147.80 lbs ~0 Gs
50 mm	17.20 kg / 37.91 lbs 1 867 Gs	2.58 kg / 5.69 lbs 2580 g / 25.3 N	15.48 kg / 34.12 lbs ~0 Gs
60 mm	10.70 kg / 23.59 lbs 1 473 Gs	1.60 kg / 3.54 lbs 1605 g / 15.7 N	9.63 kg / 21.23 lbs ~0 Gs
70 mm	6.78 kg / 14.94 lbs 1 172 Gs	1.02 kg / 2.24 lbs 1017 g / 10.0 N	6.10 kg / 13.45 lbs ~0 Gs
80 mm	4.38 kg / 9.65 lbs 942 Gs	0.66 kg / 1.45 lbs 657 g / 6.4 N	3.94 kg / 8.69 lbs ~0 Gs
90 mm	2.89 kg / 6.36 lbs 765 Gs	0.43 kg / 0.95 lbs 433 g / 4.2 N	2.60 kg / 5.72 lbs ~0 Gs
100 mm	1.94 kg / 4.27 lbs 627 Gs	0.29 kg / 0.64 lbs 291 g / 2.9 N	1.74 kg / 3.84 lbs ~0 Gs

Two magnets attract each other from a significantly greater distance than a magnet and sheet combination. The connection of two magnets generates a stronger field and a wider radius of performance. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the impact force is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density between like poles reaches ~0 Gs at the midpoint of the gap (due to field cancellation).
Important: Figures refer to shear force of dual same neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MPL 80x40x15 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	26.0 cm
Hearing aid	10 Gs (1.0 mT)	20.5 cm
Timepiece	20 Gs (2.0 mT)	16.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	12.5 cm
Car key	50 Gs (5.0 mT)	11.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

A strong magnetic field poses a real danger to IT equipment and medical implants. These magnets produce a field that destroys function of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - collision effects
MPL 80x40x15 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.11 km/h (5.03 m/s)	4.56 J
30 mm	25.99 km/h (7.22 m/s)	9.38 J
50 mm	32.48 km/h (9.02 m/s)	14.65 J
100 mm	45.61 km/h (12.67 m/s)	28.89 J

Neodymium magnets are prone to chipping – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely turns into a projectile. Impact energy can cause material chips or painful pinches to fingers. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Coating parameters (durability)
MPL 80x40x15 / 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 80x40x15 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	94 833 Mx	948.3 µWb
P_c Coefficient	0.33	Low (Flat)

Flux value emitted by the magnet pole. Key data in coil applications as well as sensors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MPL 80x40x15 / N38

Environment	Effective steel pull	Effect
Air (land)	73.57 kg	Standard
Water (riverbed)	84.24 kg (+10.67 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!

The magnetic field penetrates through water without any losses. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

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

2. Steel saturation

*Thin steel (e.g. computer case) significantly reduces the holding force.

3. Temperature resistance

*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) = 0.33

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

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: 020177-2026

Measurement Calculator

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Component MPL 80x40x15 / N38 features a low profile and industrial pulling force, making it a perfect solution for building separators and machines. This rectangular block with a force of 721.75 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 73.57 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.

They constitute a key element in the production of generators and material handling systems. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for workshop organization 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. 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.

Standardly, the MPL 80x40x15 / N38 model is magnetized through the thickness (dimension 15 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (80x40 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 80x40x15 mm, which, at a weight of 360 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 73.57 kg (force ~721.75 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of rare earth magnets.

Benefits

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:

They retain attractive force for nearly ten years – the drop is just ~1% (in theory),
Magnets effectively protect themselves against demagnetization caused by ambient magnetic noise,
A magnet with a metallic silver surface has an effective appearance,
Magnets possess very high magnetic induction on the active area,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Possibility of custom machining as well as modifying to atypical requirements,
Significant place in modern industrial fields – they serve a role in mass storage devices, electric motors, medical devices, and other advanced devices.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of NdFeB magnets:

Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
When exposed to high temperature, neodymium magnets experience a drop in strength. 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
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in producing threads and complicated shapes in magnets, we recommend using a housing - magnetic holder.
Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these products are able to complicate diagnosis medical in case of swallowing.
Due to complex production process, their price is higher than average,

Holding force characteristics

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

Holding force of 73.57 kg is a theoretical maximum value executed under specific, ideal conditions:

using a sheet made of mild steel, serving as a circuit closing element
whose thickness reaches at least 10 mm
characterized by smoothness
with total lack of distance (without impurities)
during pulling in a direction perpendicular to the mounting surface
at standard ambient temperature

Lifting capacity in real conditions – factors

During everyday use, the actual holding force depends on several key aspects, listed from crucial:

Air gap (between the magnet and the metal), as even a very small distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be lost to the other side.
Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
Plate texture – ground elements ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate lowers the load capacity.

Safety rules for work with NdFeB magnets

Magnetic media

Avoid bringing magnets near a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.

Phone sensors

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

Conscious usage

Exercise caution. Rare earth magnets attract from a distance and connect with massive power, often faster than you can move away.

Fragile material

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Operating temperature

Keep cool. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Nickel allergy

Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and opt for versions in plastic housing.

This is not a toy

Only for adults. Tiny parts can be swallowed, causing serious injuries. Keep away from children and animals.

Serious injuries

Big blocks can crush fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

Mechanical processing

Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.

Danger to pacemakers

Patients with a ICD should keep an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Security! Learn more about risks in the article: Magnet Safety Guide.

MPL 80x40x15 / N38 - lamellar magnet

Technical - MPL 80x40x15 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering modeling of the assembly - technical parameters

Table 1: Static force (pull vs gap) - power drop MPL 80x40x15 / N38

Table 2: Vertical load (wall) MPL 80x40x15 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MPL 80x40x15 / N38

Table 4: Steel thickness (saturation) - sheet metal selection MPL 80x40x15 / N38

Table 5: Thermal stability (material behavior) - thermal limit MPL 80x40x15 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MPL 80x40x15 / N38

Table 7: Hazards (electronics) - warnings MPL 80x40x15 / N38

Table 8: Collisions (cracking risk) - collision effects MPL 80x40x15 / N38

Table 9: Coating parameters (durability) MPL 80x40x15 / N38

Table 10: Electrical data (Pc) MPL 80x40x15 / N38

Table 11: Physics of underwater searching MPL 80x40x15 / N38

1. Vertical hold

2. Steel saturation

3. Temperature resistance

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

Elemental analysis

Sustainability

Pulling force

Magnetic Field

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Pros as well as cons of rare earth magnets.

Benefits

Weaknesses

Holding force characteristics

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

Lifting capacity in real conditions – factors

Safety rules for work with NdFeB magnets

Magnetic media

Phone sensors

Conscious usage

Fragile material

Operating temperature

Nickel allergy

This is not a toy

Serious injuries

Mechanical processing

Danger to pacemakers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - power drop
MPL 80x40x15 / N38

Table 2: Vertical load (wall)
MPL 80x40x15 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 80x40x15 / N38

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 80x40x15 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MPL 80x40x15 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 80x40x15 / N38

Table 7: Hazards (electronics) - warnings
MPL 80x40x15 / N38

Table 8: Collisions (cracking risk) - collision effects
MPL 80x40x15 / N38

Table 9: Coating parameters (durability)
MPL 80x40x15 / N38

Table 10: Electrical data (P_c)
MPL 80x40x15 / N38

Table 11: Physics of underwater searching
MPL 80x40x15 / N38