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MPL 30x20x20 / 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 020142

GTIN/EAN: 5906301811480

5.00

length

30 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

90 g

Magnetization Direction

↑ axial

Load capacity

24.27 kg / 238.07 N

Magnetic Induction

512.53 mT / 5125 Gs

Coating

[NiCuNi] Nickel

see technical data »

43.22 ZŁ with VAT / pcs + price for transport

35.14 ZŁ net + 23% VAT / pcs

bulk discounts:

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Give us a call +48 22 499 98 98 otherwise contact us through request form our website.
Strength and appearance of neodymium magnets can be reviewed on our power calculator.

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Physical properties - MPL 30x20x20 / N38 - lamellar magnet

Specification / characteristics - MPL 30x20x20 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020142
GTIN/EAN	5906301811480
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	30 mm [±0,1 mm]
Width	20 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	90 g
Magnetization Direction	↑ axial
Load capacity ~ ?	24.27 kg / 238.07 N
Magnetic Induction ~ ?	512.53 mT / 5125 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x20x20 / 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

Technical modeling of the magnet - technical parameters

Presented information are the result of a physical simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Actual performance might slightly differ from theoretical values. Use these calculations as a supplementary guide for designers.

Table 1: Static force (force vs distance) - power drop
MPL 30x20x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5124 Gs 512.4 mT	24.27 kg / 53.51 pounds 24270.0 g / 238.1 N	crushing
1 mm	4730 Gs 473.0 mT	20.68 kg / 45.60 pounds 20685.0 g / 202.9 N	crushing
2 mm	4335 Gs 433.5 mT	17.37 kg / 38.30 pounds 17370.7 g / 170.4 N	crushing
3 mm	3950 Gs 395.0 mT	14.43 kg / 31.80 pounds 14425.2 g / 141.5 N	crushing
5 mm	3240 Gs 324.0 mT	9.71 kg / 21.40 pounds 9706.2 g / 95.2 N	medium risk
10 mm	1923 Gs 192.3 mT	3.42 kg / 7.53 pounds 3417.4 g / 33.5 N	medium risk
15 mm	1163 Gs 116.3 mT	1.25 kg / 2.76 pounds 1250.2 g / 12.3 N	low risk
20 mm	736 Gs 73.6 mT	0.50 kg / 1.10 pounds 500.4 g / 4.9 N	low risk
30 mm	338 Gs 33.8 mT	0.11 kg / 0.23 pounds 105.3 g / 1.0 N	low risk
50 mm	106 Gs 10.6 mT	0.01 kg / 0.02 pounds 10.3 g / 0.1 N	low risk

Pulling power weakens significantly with every mm of spacing. Remember that every additional insulation layer (e.g., contamination, varnish, dust) noticeably reduces the pull force. Magnetic products hold most effectively during direct contact; air break drastically cuts the force. Observe how rapidly the pull force plummet, when the product does not touch tightly to the metal substrate. When planning the arrangement, eliminate redundant distances.

Table 2: Vertical hold (vertical surface)
MPL 30x20x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.85 kg / 10.70 pounds 4854.0 g / 47.6 N
1 mm	Stal (~0.2)	4.14 kg / 9.12 pounds 4136.0 g / 40.6 N
2 mm	Stal (~0.2)	3.47 kg / 7.66 pounds 3474.0 g / 34.1 N
3 mm	Stal (~0.2)	2.89 kg / 6.36 pounds 2886.0 g / 28.3 N
5 mm	Stal (~0.2)	1.94 kg / 4.28 pounds 1942.0 g / 19.1 N
10 mm	Stal (~0.2)	0.68 kg / 1.51 pounds 684.0 g / 6.7 N
15 mm	Stal (~0.2)	0.25 kg / 0.55 pounds 250.0 g / 2.5 N
20 mm	Stal (~0.2)	0.10 kg / 0.22 pounds 100.0 g / 1.0 N
30 mm	Stal (~0.2)	0.02 kg / 0.05 pounds 22.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N

The table below defines the estimated shear load necessary to cause the shifting of the magnet downwards along a upright steel wall (considering typical friction coefficient). The holding force is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 30x20x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	7.28 kg / 16.05 pounds 7281.0 g / 71.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.85 kg / 10.70 pounds 4854.0 g / 47.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.43 kg / 5.35 pounds 2427.0 g / 23.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	12.14 kg / 26.75 pounds 12135.0 g / 119.0 N

When hanging a magnet on a vertical surface (e.g., a car body), it will maintain barely about 20%-30% of its nominal power. Gravitational force and a weak degree of grip mean that magnets slip faster than they pull off. Planning a wall mount? Note that the sliding force is much weaker than the maximum static pull force. On a slippery surface, the holder will slide down under a much lighter load. Application of an anti-slip pad can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 30x20x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.21 kg / 2.68 pounds 1213.5 g / 11.9 N
1 mm	13%	3.03 kg / 6.69 pounds 3033.8 g / 29.8 N
2 mm	25%	6.07 kg / 13.38 pounds 6067.5 g / 59.5 N
3 mm	38%	9.10 kg / 20.06 pounds 9101.3 g / 89.3 N
5 mm	63%	15.17 kg / 33.44 pounds 15168.8 g / 148.8 N
10 mm	100%	24.27 kg / 53.51 pounds 24270.0 g / 238.1 N
11 mm	100%	24.27 kg / 53.51 pounds 24270.0 g / 238.1 N
12 mm	100%	24.27 kg / 53.51 pounds 24270.0 g / 238.1 N

A thin metal plate is unable to conduct the full magnetic flux, which squanders power of the holder. If you attach a powerful product to a thin surface, the flux will penetrate right through and the holding will be smaller. To utilize 100% of this neodymium's power, you need a suitably thick element of metal. The material oversaturation means that on thin elements (e.g., car bodies), the magnet works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal stability (stability) - power drop
MPL 30x20x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	24.27 kg / 53.51 pounds 24270.0 g / 238.1 N	OK
40 °C	-2.2%	23.74 kg / 52.33 pounds 23736.1 g / 232.9 N	OK
60 °C	-4.4%	23.20 kg / 51.15 pounds 23202.1 g / 227.6 N	OK
80 °C	-6.6%	22.67 kg / 49.97 pounds 22668.2 g / 222.4 N
100 °C	-28.8%	17.28 kg / 38.10 pounds 17280.2 g / 169.5 N

Standard neodymium magnets lose parameters past the thermal threshold. Protect against heat – high temperature can permanently damage this magnet. With increasing heat, the neodymium's capacity momentarily decreases. Avoid using this product close to ovens exceeding its safe range. Exceeding the critical threshold will result in irreversible degradation of magnetism.

*Technical advisory: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low Pc) may lose charge permanently at lower temperatures than taller cylinders. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MPL 30x20x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Lateral Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	97.11 kg / 214.09 pounds 5 859 Gs	14.57 kg / 32.11 pounds 14567 g / 142.9 N	N/A
1 mm	89.88 kg / 198.15 pounds 9 859 Gs	13.48 kg / 29.72 pounds 13482 g / 132.3 N	80.89 kg / 178.34 pounds ~0 Gs
2 mm	82.77 kg / 182.47 pounds 9 461 Gs	12.42 kg / 27.37 pounds 12415 g / 121.8 N	74.49 kg / 164.22 pounds ~0 Gs
3 mm	75.96 kg / 167.47 pounds 9 063 Gs	11.39 kg / 25.12 pounds 11394 g / 111.8 N	68.37 kg / 150.72 pounds ~0 Gs
5 mm	63.42 kg / 139.81 pounds 8 281 Gs	9.51 kg / 20.97 pounds 9513 g / 93.3 N	57.08 kg / 125.83 pounds ~0 Gs
10 mm	38.84 kg / 85.62 pounds 6 481 Gs	5.83 kg / 12.84 pounds 5826 g / 57.1 N	34.95 kg / 77.06 pounds ~0 Gs
20 mm	13.67 kg / 30.15 pounds 3 845 Gs	2.05 kg / 4.52 pounds 2051 g / 20.1 N	12.31 kg / 27.13 pounds ~0 Gs
50 mm	0.88 kg / 1.94 pounds 976 Gs	0.13 kg / 0.29 pounds 132 g / 1.3 N	0.79 kg / 1.75 pounds ~0 Gs
60 mm	0.42 kg / 0.93 pounds 675 Gs	0.06 kg / 0.14 pounds 63 g / 0.6 N	0.38 kg / 0.84 pounds ~0 Gs
70 mm	0.22 kg / 0.48 pounds 484 Gs	0.03 kg / 0.07 pounds 33 g / 0.3 N	0.20 kg / 0.43 pounds ~0 Gs
80 mm	0.12 kg / 0.26 pounds 358 Gs	0.02 kg / 0.04 pounds 18 g / 0.2 N	0.11 kg / 0.24 pounds ~0 Gs
90 mm	0.07 kg / 0.15 pounds 272 Gs	0.01 kg / 0.02 pounds 10 g / 0.1 N	0.06 kg / 0.14 pounds ~0 Gs
100 mm	0.04 kg / 0.09 pounds 211 Gs	0.01 kg / 0.01 pounds 6 g / 0.1 N	0.04 kg / 0.08 pounds ~0 Gs

Two magnetic products attract each other from a wider radius than a neodymium and metal combination. The connection of magnet-to-magnet creates a more powerful interaction and a larger range of action. Designing a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when attracting two neodymiums, the collision energy is extreme. The repulsion force is a bit weaker than the attraction, but still significant.
*Flux density in repulsion mode drops to ~0 Gs at the midpoint between the magnets (due to field cancellation).
Attention: Figures refer to friction force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - warnings
MPL 30x20x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	16.0 cm
Hearing aid	10 Gs (1.0 mT)	12.5 cm
Timepiece	20 Gs (2.0 mT)	10.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	7.5 cm
Car key	50 Gs (5.0 mT)	7.0 cm
Payment card	400 Gs (40.0 mT)	3.0 cm
HDD hard drive	600 Gs (60.0 mT)	2.5 cm

Extremely neodym field poses a large risk to IT equipment as well as pacemakers. These neodymiums produce a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and plastic. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, membranes, and screens. Do not place the magnet near cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - warning
MPL 30x20x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.96 km/h (4.99 m/s)	1.12 J
30 mm	28.76 km/h (7.99 m/s)	2.87 J
50 mm	37.04 km/h (10.29 m/s)	4.76 J
100 mm	52.37 km/h (14.55 m/s)	9.52 J

NdFeB products are delicate – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Striking energy can cause material chips or injury to fingers. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Surface protection spec
MPL 30x20x20 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (P_c)
MPL 30x20x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	30 878 Mx	308.8 µWb
P_c Coefficient	0.74	High (Stable)

Total magnetic flux emitted by the magnet pole. Key data in coil applications and motors. The P_c coefficient defines the working geometry.

Table 11: Physics of underwater searching
MPL 30x20x20 / N38

Environment	Effective steel pull	Effect
Air (land)	24.27 kg	Standard
Water (riverbed)	27.79 kg (+3.52 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Note: On a vertical surface, the magnet holds only approx. 20-30% of its max power.

2. Efficiency vs thickness

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

3. Temperature resistance

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.74

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

Chemical composition

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: 020142-2026

Measurement Calculator

Pulling force

Force (N)

Pounds (lbs)

Field Strength

Gauss (Gs)

Insert a value in any box, and the rest will recalculate automatically.

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Model MPL 30x20x20 / N38 features a flat shape and industrial pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 238.07 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.

The key to success is shifting 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 30x20x20 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend care, 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.

They constitute a key element in the production of generators and material handling systems. Thanks to the flat surface and high force (approx. 24.27 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 30x20x20 / N38, we recommend utilizing strong epoxy glues (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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 30x20x20 / N38 model is magnetized through the thickness (dimension 20 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 (30x20 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.

This model is characterized by dimensions 30x20x20 mm, which, at a weight of 90 g, makes it an element with high energy density. The key parameter here is the holding force amounting to approximately 24.27 kg (force ~238.07 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of neodymium magnets.

Benefits

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

They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
Neodymium magnets remain extremely resistant to magnetic field loss caused by magnetic disturbances,
Thanks to the metallic finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an professional appearance,
Magnetic induction on the working layer of the magnet remains maximum,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Thanks to the option of flexible shaping and adaptation to individualized requirements, magnetic components can be produced in a wide range of shapes and sizes, which expands the range of possible applications,
Key role in electronics industry – they serve a role in computer drives, electric drive systems, diagnostic systems, also complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which allows their use in compact constructions

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and 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 suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
We suggest casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complex forms.
Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to disrupt the diagnostic process medical in case of swallowing.
Due to complex production process, their price is relatively high,

Lifting parameters

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

The lifting capacity listed is a measurement result executed under specific, ideal conditions:

with the use of a yoke made of special test steel, ensuring full magnetic saturation
possessing a massiveness of min. 10 mm to avoid saturation
with an ideally smooth contact surface
without the slightest insulating layer between the magnet and steel
during detachment in a direction vertical to the mounting surface
at temperature room level

What influences lifting capacity in practice

It is worth knowing that the working load will differ subject to elements below, starting with the most relevant:

Distance – the presence of any layer (paint, dirt, air) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Steel thickness – insufficiently thick steel does not accept the full field, causing part of the flux to be wasted to the other side.
Material composition – not every steel attracts identically. Alloy additives weaken the attraction effect.
Plate texture – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Safe handling of neodymium magnets

Medical implants

Patients with a heart stimulator should maintain an large gap from magnets. The magnetism can stop the operation of the life-saving device.

Magnetic media

Very strong magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Magnetic interference

Note: neodymium magnets produce a field that confuses sensitive sensors. Maintain a separation from your phone, device, and navigation systems.

Keep away from children

NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which poses a severe health hazard and necessitates immediate surgery.

Do not overheat magnets

Control the heat. Heating the magnet to high heat will destroy its magnetic structure and pulling force.

Handling rules

Handle with care. Rare earth magnets attract from a long distance and connect with huge force, often faster than you can react.

Magnet fragility

Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Bodily injuries

Watch your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Mechanical processing

Dust created during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Avoid contact if allergic

A percentage of the population have a sensitization to nickel, which is the standard coating for NdFeB magnets. Prolonged contact might lead to a rash. We suggest use protective gloves.

Attention! Need more info? Check our post: Are neodymium magnets dangerous?

MPL 30x20x20 / N38 - lamellar magnet

Physical properties - MPL 30x20x20 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the magnet - technical parameters

Table 1: Static force (force vs distance) - power drop MPL 30x20x20 / N38

Table 2: Vertical hold (vertical surface) MPL 30x20x20 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 30x20x20 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection MPL 30x20x20 / N38

Table 5: Thermal stability (stability) - power drop MPL 30x20x20 / N38

Table 6: Two magnets (attraction) - field range MPL 30x20x20 / N38

Table 7: Safety (HSE) (implants) - warnings MPL 30x20x20 / N38

Table 8: Collisions (cracking risk) - warning MPL 30x20x20 / N38

Table 9: Surface protection spec MPL 30x20x20 / N38

Table 10: Electrical data (Pc) MPL 30x20x20 / N38

Table 11: Physics of underwater searching MPL 30x20x20 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Temperature resistance

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

Chemical composition

Sustainability

Pulling force

Field Strength

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Pros as well as cons of neodymium magnets.

Benefits

Cons

Lifting parameters

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

What influences lifting capacity in practice

Safe handling of neodymium magnets

Medical implants

Magnetic media

Magnetic interference

Keep away from children

Do not overheat magnets

Handling rules

Magnet fragility

Bodily injuries

Mechanical processing

Avoid contact if allergic

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs distance) - power drop
MPL 30x20x20 / N38

Table 2: Vertical hold (vertical surface)
MPL 30x20x20 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 30x20x20 / N38

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 30x20x20 / N38

Table 5: Thermal stability (stability) - power drop
MPL 30x20x20 / N38

Table 6: Two magnets (attraction) - field range
MPL 30x20x20 / N38

Table 7: Safety (HSE) (implants) - warnings
MPL 30x20x20 / N38

Table 8: Collisions (cracking risk) - warning
MPL 30x20x20 / N38

Table 9: Surface protection spec
MPL 30x20x20 / N38

Table 10: Electrical data (P_c)
MPL 30x20x20 / N38

Table 11: Physics of underwater searching
MPL 30x20x20 / N38