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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

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68.27 ZŁ with VAT / pcs + price for transport

55.50 ZŁ net + 23% VAT / pcs

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Technical parameters - 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

Technical simulation of the product - technical parameters

Presented data represent the result of a physical calculation. Values are based on models for the class Nd2Fe14B. Operational conditions may differ from theoretical values. Use these calculations as a reference point for designers.

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
 crushing
1 mm 3087 Gs
308.7 mT
 31.25 kg / 68.89 LBS
31248.2 g / 306.5 N
 crushing
2 mm 2866 Gs
286.6 mT
 26.93 kg / 59.37 LBS
26929.3 g / 264.2 N
 crushing
3 mm 2643 Gs
264.3 mT
 22.90 kg / 50.48 LBS
22895.5 g / 224.6 N
 crushing
5 mm 2216 Gs
221.6 mT
 16.10 kg / 35.50 LBS
16103.3 g / 158.0 N
 crushing
10 mm 1397 Gs
139.7 mT
 6.40 kg / 14.11 LBS
6402.3 g / 62.8 N
 medium risk
15 mm 907 Gs
90.7 mT
 2.70 kg / 5.95 LBS
2697.7 g / 26.5 N
 medium risk
20 mm 615 Gs
61.5 mT
 1.24 kg / 2.73 LBS
1239.2 g / 12.2 N
 low risk
30 mm 314 Gs
31.4 mT
 0.32 kg / 0.71 LBS
322.6 g / 3.2 N
 low risk
50 mm 108 Gs
10.8 mT
 0.04 kg / 0.09 LBS
38.6 g / 0.4 N
 low risk
Magnetic force drops drastically with every mm of distance. Note that every additional insulation layer (e.g., contamination, paint, dust) noticeably reduces the pull force. Magnets operate strongest at the point of direct contact; gap drastically cuts the power. Analyze how rapidly the load capacity fall, when the magnet does not adhere flatly to the metal substrate. When designing the assembly, eliminate unnecessary gaps.

Table 2: Sliding force (vertical surface)
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
This section indicates the theoretical holding capacity necessary to cause the slippage of the magnet downwards against a upright steel plate (considering typical friction coefficient). This parameter is relative to the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
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 magnet on a upright surface (e.g., a car body), it will only hold barely about 20%-30% of its maximum pull force. Gravity and a weak degree of grip influence the fact that holders slip faster than they pop off the substrate. Designing a wall mount? Note that the shear force is significantly lower than the perpendicular breakaway force. On a slippery surface, the holder will slip down under a significantly smaller load. Utilizing a rubberized pad can effectively raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
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 too thin steel cannot absorb the full magnetic flux, which weakens actual performance of the magnet. Should you attach a powerful product to a weak sheet, the flux will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's potential, you need a suitably thick piece of steel. The saturation effect means that on sheet metal structures (e.g., car bodies), the product works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
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
Ordinary NdFeB products irreversibly lose power above the temperature limit. Protect against heat – high temperature can irreversibly demagnetize this product. With increasing heat, the magnet's power momentarily decreases. Avoid using this product near heat sources exceeding its safe range. Too high temperature will cause irreversible degradation of magnetic properties.
*Technical advisory: Temperature resistance is determined by both grade, but also on the magnet's shape. Low-profile magnets (low Pc) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table signals a risk of irreversible loss for this specific geometry.

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

Gap (mm) Attraction (kg/lbs) (N-S) Sliding 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 magnetic products interact from a much further distance than a magnet and steel combination. The setup of two magnets generates a stronger field and a wider radius of operation. Want to build a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the impact force is huge. The levitation is a bit weaker than the attraction, but still impressive.
*The magnetic induction in repulsion mode drops to ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Note: Calculations refer to shear force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (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
Powerful magnet radiation is a serious hazard to electronic devices as well as pacemakers. These neodymiums produce a flux that destroys function of sensitive medical devices. Notice: the unseen radiation penetrates the body and glass. Increased vigilance must be taken by people with hearing aids and insulin pumps. The risk also applies to: mechanical watches, remotes, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
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
NdFeB products are very brittle – a strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely becomes dangerous. Striking energy can cause material chips or dangerous crushing to skin. Hold the magnet firmly during installation so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the magnet. Wear eye protection when working with powerful specimens.

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)
Neodymium magnets are highly susceptible to corrosion without proper protection. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

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

Parameter Value SI Unit / Description
Magnetic Flux 37 480 Mx 374.8 µWb
Pc Coefficient 0.35 Low (Flat)
Total magnetic flux passing through the magnet pole. Key data for generator designers as well as sensors. The Pc coefficient defines the magnet's operating point.

Table 11: Submerged application
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: 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. Sliding resistance

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

2. Efficiency vs thickness

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

3. Heat tolerance

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

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

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

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 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.

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%
Ecology and recycling (GPSR)
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 low profile and industrial pulling force, making it an ideal solution for building separators and machines. As a magnetic bar with high power (approx. 35.61 kg), this product is available off-the-shelf from our warehouse in Poland. Furthermore, its Ni-Cu-Ni coating protects 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. 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 magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 35.61 kg), they are ideal as hidden locks 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 60x20x10 / N38, it is best to use strong epoxy glues (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 axially (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. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
The presented product is a neodymium magnet with precisely defined parameters: 60 mm (length), 20 mm (width), and 10 mm (thickness). It is a magnetic block with dimensions 60x20x10 mm and a self-weight of 90 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Pros and cons of rare earth magnets.

Strengths

Besides their tremendous pulling force, neodymium magnets offer the following advantages:
  • They do not lose magnetism, even during around 10 years – the reduction in strength is only ~1% (based on measurements),
  • Neodymium magnets are distinguished by remarkably resistant to loss of magnetic properties caused by external magnetic fields,
  • Thanks to the glossy finish, the plating of nickel, gold-plated, or silver gives an visually attractive appearance,
  • Neodymium magnets ensure maximum magnetic induction on a contact point, which increases force concentration,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of accurate creating as well as modifying to complex requirements,
  • Fundamental importance in modern industrial fields – they serve a role in mass storage devices, electric motors, advanced medical instruments, and complex engineering applications.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Problematic aspects of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
  • We recommend casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Possible danger to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • Due to complex production process, their price is relatively high,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

The declared magnet strength represents the maximum value, recorded under ideal test conditions, meaning:
  • on a plate made of mild steel, perfectly concentrating the magnetic field
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • with a plane perfectly flat
  • under conditions of gap-free contact (surface-to-surface)
  • for force applied at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Key elements affecting lifting force

Real force is affected by working environment parameters, including (from priority):
  • Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Load vector – highest force is available only during pulling at a 90° angle. The shear force of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
  • Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under shearing force the holding force is lower. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Precautions when working with NdFeB magnets
Metal Allergy

It is widely known that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands or opt for coated magnets.

Immense force

Handle with care. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can move away.

ICD Warning

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Phone sensors

GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

Pinching danger

Watch your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Machining danger

Dust produced during grinding of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Magnetic media

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, medical aids, timepieces).

Heat sensitivity

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

Swallowing risk

Absolutely keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are tragic.

Risk of cracking

Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets will cause them cracking into small pieces.

Danger! Details about hazards in the article: Safety of working with magnets.