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MPL 60x20x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020174

GTIN/EAN: 5906301811800

5.00

length

60 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

90 g

Magnetization Direction

↑ axial

Load capacity

35.61 kg / 349.34 N

Magnetic Induction

329.64 mT / 3296 Gs

Coating

[NiCuNi] Nickel

technical parameters »

68.27 ZŁ with VAT / pcs + price for transport

55.50 ZŁ net + 23% VAT / pcs

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Physical properties - MPL 60x20x10 / N38 - lamellar magnet

Specification / characteristics - MPL 60x20x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020174
GTIN/EAN 5906301811800
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 60 mm [±0,1 mm]
Width 20 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 90 g
Magnetization Direction ↑ axial
Load capacity ~ ? 35.61 kg / 349.34 N
Magnetic Induction ~ ? 329.64 mT / 3296 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 60x20x10 / 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

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

Presented information represent the outcome of a engineering calculation. Values were calculated on algorithms for the class Nd2Fe14B. Actual conditions might slightly differ. Please consider these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (force vs gap) - power drop
MPL 60x20x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3296 Gs
329.6 mT
 35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
 critical level
1 mm 3087 Gs
308.7 mT
 31.25 kg / 68.89 lbs
31248.2 g / 306.5 N
 critical level
2 mm 2866 Gs
286.6 mT
 26.93 kg / 59.37 lbs
26929.3 g / 264.2 N
 critical level
3 mm 2643 Gs
264.3 mT
 22.90 kg / 50.48 lbs
22895.5 g / 224.6 N
 critical level
5 mm 2216 Gs
221.6 mT
 16.10 kg / 35.50 lbs
16103.3 g / 158.0 N
 critical level
10 mm 1397 Gs
139.7 mT
 6.40 kg / 14.11 lbs
6402.3 g / 62.8 N
 strong
15 mm 907 Gs
90.7 mT
 2.70 kg / 5.95 lbs
2697.7 g / 26.5 N
 strong
20 mm 615 Gs
61.5 mT
 1.24 kg / 2.73 lbs
1239.2 g / 12.2 N
 weak grip
30 mm 314 Gs
31.4 mT
 0.32 kg / 0.71 lbs
322.6 g / 3.2 N
 weak grip
50 mm 108 Gs
10.8 mT
 0.04 kg / 0.09 lbs
38.6 g / 0.4 N
 weak grip
Grip strength decreases drastically with every subsequent millimeter of spacing. Note that every additional insulation layer (e.g., dirt, paint, rust) noticeably diminishes the holding power. Magnets operate optimally in perfect adhesion; air break kills the force. Notice how flashily the pull force drop, when the magnet does not touch flatly to the metal substrate. When calculating the assembly, avoid additional spacers.

Table 2: Vertical load (wall)
MPL 60x20x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 7.12 kg / 15.70 lbs
7122.0 g / 69.9 N
1 mm Stal (~0.2) 6.25 kg / 13.78 lbs
6250.0 g / 61.3 N
2 mm Stal (~0.2) 5.39 kg / 11.87 lbs
5386.0 g / 52.8 N
3 mm Stal (~0.2) 4.58 kg / 10.10 lbs
4580.0 g / 44.9 N
5 mm Stal (~0.2) 3.22 kg / 7.10 lbs
3220.0 g / 31.6 N
10 mm Stal (~0.2) 1.28 kg / 2.82 lbs
1280.0 g / 12.6 N
15 mm Stal (~0.2) 0.54 kg / 1.19 lbs
540.0 g / 5.3 N
20 mm Stal (~0.2) 0.25 kg / 0.55 lbs
248.0 g / 2.4 N
30 mm Stal (~0.2) 0.06 kg / 0.14 lbs
64.0 g / 0.6 N
50 mm Stal (~0.2) 0.01 kg / 0.02 lbs
8.0 g / 0.1 N
The table below defines the theoretical holding capacity sufficient to initiate the sliding of the magnet downwards along a upright steel wall (assuming standard friction coefficient). This value varies with the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MPL 60x20x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
10.68 kg / 23.55 lbs
10683.0 g / 104.8 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
7.12 kg / 15.70 lbs
7122.0 g / 69.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
3.56 kg / 7.85 lbs
3561.0 g / 34.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
17.81 kg / 39.25 lbs
17805.0 g / 174.7 N
When hanging a element on a vertical plane (e.g., a board), it you can count on just approx. 20%-30% of its nominal power. Gravity and a low friction coefficient mean that holders slip faster than they pull off. Designing a vertical fastening? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the element will give way down under a noticeably lighter weight. Utilizing a rubberized pad can significantly improve the result.

Table 4: Steel thickness (substrate influence) - power losses
MPL 60x20x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 1.78 kg / 3.93 lbs
1780.5 g / 17.5 N
1 mm
13%
 4.45 kg / 9.81 lbs
4451.3 g / 43.7 N
2 mm
25%
 8.90 kg / 19.63 lbs
8902.5 g / 87.3 N
3 mm
38%
 13.35 kg / 29.44 lbs
13353.8 g / 131.0 N
5 mm
63%
 22.26 kg / 49.07 lbs
22256.3 g / 218.3 N
10 mm
100%
 35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
11 mm
100%
 35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
12 mm
100%
 35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
A thin metal plate is incapable of take in the entire magnetic field, which wastes potential of the holder. Should you mount a strong magnet to a too thin substrate, the magnetism will pass right through and the attraction force will be weaker. To utilize 100% of this magnet's potential, you need a suitably thick piece of steel. The saturation effect means that on sheet metal structures (e.g., appliance housings), the holder holds weaker. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal stability (stability) - power drop
MPL 60x20x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 35.61 kg / 78.51 lbs
35610.0 g / 349.3 N
 OK
40 °C -2.2% 34.83 kg / 76.78 lbs
34826.6 g / 341.6 N
 OK
60 °C -4.4% 34.04 kg / 75.05 lbs
34043.2 g / 334.0 N
80 °C -6.6% 33.26 kg / 73.33 lbs
33259.7 g / 326.3 N
100 °C -28.8% 25.35 kg / 55.90 lbs
25354.3 g / 248.7 N
Classic neodymiums change their properties parameters past the thermal threshold. Avoid high temperatures – high temperature can irreversibly demagnetize this magnet. With increasing heat, the neodymium's force momentarily lowers. Refrain from using this product close to ovens higher than its safe range. Ignoring the limit will result in permanent loss of magnetism.
*Technical advisory: Temperature resistance is determined by both grade, as well as the dimension ratios. Flat magnets (low Pc) are more susceptible to demagnetization sooner than taller cylinders. Red status in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MPL 60x20x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 80.35 kg / 177.15 lbs
4 692 Gs
12.05 kg / 26.57 lbs
12053 g / 118.2 N
 N/A
1 mm 75.49 kg / 166.43 lbs
6 389 Gs
11.32 kg / 24.96 lbs
11324 g / 111.1 N
 67.94 kg / 149.79 lbs
~0 Gs
2 mm 70.51 kg / 155.45 lbs
6 174 Gs
10.58 kg / 23.32 lbs
10577 g / 103.8 N
 63.46 kg / 139.90 lbs
~0 Gs
3 mm 65.58 kg / 144.58 lbs
5 955 Gs
9.84 kg / 21.69 lbs
9837 g / 96.5 N
 59.02 kg / 130.12 lbs
~0 Gs
5 mm 56.11 kg / 123.71 lbs
5 508 Gs
8.42 kg / 18.56 lbs
8417 g / 82.6 N
 50.50 kg / 111.34 lbs
~0 Gs
10 mm 36.34 kg / 80.11 lbs
4 432 Gs
5.45 kg / 12.02 lbs
5450 g / 53.5 N
 32.70 kg / 72.10 lbs
~0 Gs
20 mm 14.45 kg / 31.85 lbs
2 795 Gs
2.17 kg / 4.78 lbs
2167 g / 21.3 N
 13.00 kg / 28.66 lbs
~0 Gs
50 mm 1.38 kg / 3.05 lbs
865 Gs
0.21 kg / 0.46 lbs
208 g / 2.0 N
 1.25 kg / 2.75 lbs
~0 Gs
60 mm 0.73 kg / 1.60 lbs
627 Gs
0.11 kg / 0.24 lbs
109 g / 1.1 N
 0.66 kg / 1.44 lbs
~0 Gs
70 mm 0.40 kg / 0.89 lbs
467 Gs
0.06 kg / 0.13 lbs
60 g / 0.6 N
 0.36 kg / 0.80 lbs
~0 Gs
80 mm 0.23 kg / 0.51 lbs
355 Gs
0.03 kg / 0.08 lbs
35 g / 0.3 N
 0.21 kg / 0.46 lbs
~0 Gs
90 mm 0.14 kg / 0.31 lbs
275 Gs
0.02 kg / 0.05 lbs
21 g / 0.2 N
 0.13 kg / 0.28 lbs
~0 Gs
100 mm 0.09 kg / 0.19 lbs
217 Gs
0.01 kg / 0.03 lbs
13 g / 0.1 N
 0.08 kg / 0.17 lbs
~0 Gs
Two strong neodymiums interact from a much further distance than a neodymium and metal combination. The connection of two magnets produces a massive flux and a wider radius of performance. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the collision energy is massive. The levitation is slightly lower than the connection force, but still impressive.
*The magnetic induction for N-N configuration drops to ~0 Gs in the exact middle between the magnets (due to field cancellation).
Important: Calculations demonstrate sliding force of dual identical magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 60x20x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 16.5 cm
Hearing aid 10 Gs (1.0 mT) 13.0 cm
Mechanical watch 20 Gs (2.0 mT) 10.0 cm
Mobile device 40 Gs (4.0 mT) 8.0 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
A strong magnetic field poses a real danger to electronics as well as pacemakers. These magnets generate a flux that destroys function of sensitive medical devices. Remember: the unseen radiation passes through tissues and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MPL 60x20x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.20 km/h
(6.17 m/s)
 1.71 J
30 mm 34.94 km/h
(9.71 m/s)
 4.24 J
50 mm 44.89 km/h
(12.47 m/s)
 7.00 J
100 mm 63.44 km/h
(17.62 m/s)
 13.97 J
Magnetic elements are prone to chipping – a collision with steel risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can destroy the magnet or dangerous crushing to skin. Hold the magnet firmly during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed almost guarantees destruction of the magnet. Wear safety glasses when working with large magnets.

Table 9: Coating parameters (durability)
MPL 60x20x10 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Pc)
MPL 60x20x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 37 480 Mx 374.8 µWb
Pc Coefficient 0.35 Low (Flat)
Flux value emitted by the magnet pole. Essential parameter when building generators and motors. Pc value defines the working geometry.

Table 11: Physics of underwater searching
MPL 60x20x10 / N38

Environment Effective steel pull Effect
Air (land) 35.61 kg Standard
Water (riverbed) 40.77 kg
(+5.16 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.
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

*Warning: On a vertical wall, the magnet retains merely ~20% of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) severely reduces the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.35

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (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 Pc 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: 020174-2026
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Component MPL 60x20x10 / 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 349.34 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.
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. Watch your fingers! Magnets with a force of 35.61 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 60x20x10 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 60x20x10 / 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 roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 60x20x10 / N38 model is magnetized through the thickness (dimension 10 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 (60x20 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 60x20x10 mm, which, at a weight of 90 g, makes it an element with high energy density. The key parameter here is the lifting capacity amounting to approximately 35.61 kg (force ~349.34 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths as well as weaknesses of Nd2Fe14B magnets.

Strengths

Besides their immense magnetic power, neodymium magnets offer the following advantages:
  • They do not lose power, even over around ten years – the drop in lifting capacity is only ~1% (theoretically),
  • They feature excellent resistance to magnetism drop due to external fields,
  • By using a decorative layer of nickel, the element gains an nice look,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • In view of the possibility of accurate forming and customization to unique requirements, magnetic components can be modeled in a broad palette of forms and dimensions, which makes them more universal,
  • Key role in future technologies – they serve a role in data components, drive modules, advanced medical instruments, also modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

Problematic aspects of neodymium magnets: tips and applications.
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in realizing threads and complicated shapes in magnets, we propose using cover - magnetic mechanism.
  • Health risk related to microscopic parts of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these magnets can complicate diagnosis medical in case of swallowing.
  • Due to complex production process, their price is higher than average,

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

Holding force of 35.61 kg is a result of laboratory testing executed under the following configuration:
  • with the application of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
  • whose thickness is min. 10 mm
  • characterized by smoothness
  • under conditions of no distance (surface-to-surface)
  • for force applied at a right angle (in the magnet axis)
  • at conditions approx. 20°C

Determinants of lifting force in real conditions

It is worth knowing that the magnet holding will differ influenced by the following factors, in order of importance:
  • Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When attempting to slide, 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 generating force.
  • Metal type – not every steel attracts identically. Alloy additives worsen the interaction with the magnet.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate decreases the holding force.

Safe handling of neodymium magnets
Heat warning

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

Precision electronics

GPS units and mobile phones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Implant safety

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Fire risk

Combustion risk: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.

Hand protection

Pinching hazard: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.

Powerful field

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

No play value

Absolutely store magnets away from children. Risk of swallowing is high, and the effects of magnets connecting inside the body are tragic.

Allergic reactions

Certain individuals experience a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Extended handling can result in a rash. We strongly advise wear protective gloves.

Safe distance

Powerful magnetic fields can erase data on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Magnets are brittle

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets leads to them shattering into small pieces.

Important! Looking for details? Read our article: Why are neodymium magnets dangerous?