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MPL 35x35x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020144

GTIN/EAN: 5906301811503

length

35 mm [±0,1 mm]

Width

35 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

91.88 g

Magnetization Direction

↑ axial

Load capacity

26.88 kg / 263.71 N

Magnetic Induction

282.90 mT / 2829 Gs

Coating

[NiCuNi] Nickel

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35.10 ZŁ with VAT / pcs + price for transport

28.54 ZŁ net + 23% VAT / pcs

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Force and form of neodymium magnets can be analyzed using our online calculation tool.

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Detailed specification - MPL 35x35x10 / N38 - lamellar magnet

Specification / characteristics - MPL 35x35x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020144
GTIN/EAN 5906301811503
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 35 mm [±0,1 mm]
Width 35 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 91.88 g
Magnetization Direction ↑ axial
Load capacity ~ ? 26.88 kg / 263.71 N
Magnetic Induction ~ ? 282.90 mT / 2829 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 35x35x10 / 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 analysis of the magnet - report

The following information are the direct effect of a engineering simulation. Results were calculated on algorithms for the material Nd2Fe14B. Real-world parameters may differ. Please consider these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
MPL 35x35x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2829 Gs
282.9 mT
 26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
 crushing
1 mm 2727 Gs
272.7 mT
 24.98 kg / 55.08 pounds
24982.7 g / 245.1 N
 crushing
2 mm 2613 Gs
261.3 mT
 22.94 kg / 50.57 pounds
22939.0 g / 225.0 N
 crushing
3 mm 2491 Gs
249.1 mT
 20.84 kg / 45.95 pounds
20841.0 g / 204.4 N
 crushing
5 mm 2232 Gs
223.2 mT
 16.73 kg / 36.88 pounds
16730.5 g / 164.1 N
 crushing
10 mm 1600 Gs
160.0 mT
 8.60 kg / 18.96 pounds
8600.7 g / 84.4 N
 strong
15 mm 1102 Gs
110.2 mT
 4.08 kg / 9.00 pounds
4082.9 g / 40.1 N
 strong
20 mm 757 Gs
75.7 mT
 1.93 kg / 4.25 pounds
1925.7 g / 18.9 N
 safe
30 mm 376 Gs
37.6 mT
 0.48 kg / 1.05 pounds
475.7 g / 4.7 N
 safe
50 mm 122 Gs
12.2 mT
 0.05 kg / 0.11 pounds
49.9 g / 0.5 N
 safe
Magnetic force decreases significantly per each millimeter of spacing. Note that even a microscopic distance (e.g., dirt, varnish, dust) strongly diminishes the holding power. Magnets work strongest during direct contact; air break nullifies the force. Analyze how quickly the parameters drop, when the product does not adhere directly to the steel surface. When calculating the arrangement, discard redundant distances.

Table 2: Slippage load (vertical surface)
MPL 35x35x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 5.38 kg / 11.85 pounds
5376.0 g / 52.7 N
1 mm Stal (~0.2) 5.00 kg / 11.01 pounds
4996.0 g / 49.0 N
2 mm Stal (~0.2) 4.59 kg / 10.11 pounds
4588.0 g / 45.0 N
3 mm Stal (~0.2) 4.17 kg / 9.19 pounds
4168.0 g / 40.9 N
5 mm Stal (~0.2) 3.35 kg / 7.38 pounds
3346.0 g / 32.8 N
10 mm Stal (~0.2) 1.72 kg / 3.79 pounds
1720.0 g / 16.9 N
15 mm Stal (~0.2) 0.82 kg / 1.80 pounds
816.0 g / 8.0 N
20 mm Stal (~0.2) 0.39 kg / 0.85 pounds
386.0 g / 3.8 N
30 mm Stal (~0.2) 0.10 kg / 0.21 pounds
96.0 g / 0.9 N
50 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
The following data presents the approximate force needed to cause the downward movement of the magnet down on a vertical steel wall (considering standard friction). The holding force depends on the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 35x35x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
8.06 kg / 17.78 pounds
8064.0 g / 79.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
5.38 kg / 11.85 pounds
5376.0 g / 52.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
2.69 kg / 5.93 pounds
2688.0 g / 26.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
13.44 kg / 29.63 pounds
13440.0 g / 131.8 N
When hanging a holder on a upright surface (e.g., a car body), it you can count on only approx. 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient cause that products slide down faster than they pull off. Want to create a wall mount? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the element will slip down under a noticeably lighter cargo. Application of an anti-slip pad can drastically improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MPL 35x35x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 1.34 kg / 2.96 pounds
1344.0 g / 13.2 N
1 mm
13%
 3.36 kg / 7.41 pounds
3360.0 g / 33.0 N
2 mm
25%
 6.72 kg / 14.82 pounds
6720.0 g / 65.9 N
3 mm
38%
 10.08 kg / 22.22 pounds
10080.0 g / 98.9 N
5 mm
63%
 16.80 kg / 37.04 pounds
16800.0 g / 164.8 N
10 mm
100%
 26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
11 mm
100%
 26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
12 mm
100%
 26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
A thin metal plate is unable to conduct the full magnetic flux, which wastes potential of the magnet. If you install a neodymium to a too thin substrate, the flux will penetrate right through and the attraction force will be weaker. To utilize 100% of this neodymium's power, you require a sufficiently solid element of metal. The material oversaturation means that on sheet metal structures (e.g., appliance housings), the holder shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Thermal resistance (stability) - resistance threshold
MPL 35x35x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 26.88 kg / 59.26 pounds
26880.0 g / 263.7 N
 OK
40 °C -2.2% 26.29 kg / 57.96 pounds
26288.6 g / 257.9 N
 OK
60 °C -4.4% 25.70 kg / 56.65 pounds
25697.3 g / 252.1 N
80 °C -6.6% 25.11 kg / 55.35 pounds
25105.9 g / 246.3 N
100 °C -28.8% 19.14 kg / 42.19 pounds
19138.6 g / 187.7 N
Classic neodymiums lose strength after exceeding the maximum temperature. Protect against heat – heat can permanently destroy this product. With increasing heat, the neodymium's power temporarily decreases. Refrain from using this product close to heaters exceeding its safe range. Too high temperature will lead to destruction of magnetism.
*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) risk losing magnetic properties sooner than long magnets. Warning indicator in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field collision
MPL 35x35x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 60.43 kg / 133.22 pounds
4 428 Gs
9.06 kg / 19.98 pounds
9064 g / 88.9 N
 N/A
1 mm 58.36 kg / 128.67 pounds
5 560 Gs
8.75 kg / 19.30 pounds
8754 g / 85.9 N
 52.53 kg / 115.80 pounds
~0 Gs
2 mm 56.16 kg / 123.82 pounds
5 454 Gs
8.42 kg / 18.57 pounds
8424 g / 82.6 N
 50.55 kg / 111.44 pounds
~0 Gs
3 mm 53.89 kg / 118.81 pounds
5 343 Gs
8.08 kg / 17.82 pounds
8084 g / 79.3 N
 48.50 kg / 106.93 pounds
~0 Gs
5 mm 49.22 kg / 108.50 pounds
5 106 Gs
7.38 kg / 16.28 pounds
7382 g / 72.4 N
 44.29 kg / 97.65 pounds
~0 Gs
10 mm 37.61 kg / 82.92 pounds
4 463 Gs
5.64 kg / 12.44 pounds
5642 g / 55.3 N
 33.85 kg / 74.63 pounds
~0 Gs
20 mm 19.33 kg / 42.63 pounds
3 200 Gs
2.90 kg / 6.39 pounds
2900 g / 28.5 N
 17.40 kg / 38.36 pounds
~0 Gs
50 mm 2.10 kg / 4.64 pounds
1 056 Gs
0.32 kg / 0.70 pounds
316 g / 3.1 N
 1.89 kg / 4.18 pounds
~0 Gs
60 mm 1.07 kg / 2.36 pounds
753 Gs
0.16 kg / 0.35 pounds
160 g / 1.6 N
 0.96 kg / 2.12 pounds
~0 Gs
70 mm 0.57 kg / 1.26 pounds
550 Gs
0.09 kg / 0.19 pounds
86 g / 0.8 N
 0.51 kg / 1.13 pounds
~0 Gs
80 mm 0.32 kg / 0.70 pounds
411 Gs
0.05 kg / 0.11 pounds
48 g / 0.5 N
 0.29 kg / 0.63 pounds
~0 Gs
90 mm 0.19 kg / 0.41 pounds
313 Gs
0.03 kg / 0.06 pounds
28 g / 0.3 N
 0.17 kg / 0.37 pounds
~0 Gs
100 mm 0.11 kg / 0.25 pounds
244 Gs
0.02 kg / 0.04 pounds
17 g / 0.2 N
 0.10 kg / 0.22 pounds
~0 Gs
Two magnetic products interact from a significantly greater distance than a magnet and sheet setup. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of operation. Planning to create a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Be careful that when bringing together two magnets, the pinch force is huge. The repulsion force is slightly lower than the connection force, but still large.
*The magnetic induction between like poles is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
* Estimates refer to sliding force of a pair of same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - warnings
MPL 35x35x10 / 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
Timepiece 20 Gs (2.0 mT) 10.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 8.0 cm
Car key 50 Gs (5.0 mT) 7.5 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 real danger to electronic devices and medical implants. These magnets produce a field that destroys function of sensitive medical devices. Notice: the unseen radiation passes through tissues and plastic. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (cracking risk) - collision effects
MPL 35x35x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 20.41 km/h
(5.67 m/s)
 1.48 J
30 mm 30.21 km/h
(8.39 m/s)
 3.23 J
50 mm 38.62 km/h
(10.73 m/s)
 5.29 J
100 mm 54.55 km/h
(15.15 m/s)
 10.55 J
Magnetic elements are very brittle – a collision with steel risks their cracking. Watch the impact speed – a magnet released freely turns into a projectile. Striking energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't slam with momentum against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Corrosion resistance
MPL 35x35x10 / 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. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Flux)
MPL 35x35x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 38 021 Mx 380.2 µWb
Pc Coefficient 0.35 Low (Flat)
Flux value emitted by the pole surface. Key data when building generators and motors. The Pc coefficient defines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MPL 35x35x10 / N38

Environment Effective steel pull Effect
Air (land) 26.88 kg Standard
Water (riverbed) 30.78 kg
(+3.90 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. However, remember the water resistance when pulling the rope quickly.
1. Shear force

*Warning: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. computer case) drastically weakens the holding force.

3. Heat tolerance

*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

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%
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: 020144-2026
Magnet Unit Converter
Force (pull)
Magnetic Induction
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Component MPL 35x35x10 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 26.88 kg), this product is available off-the-shelf from our warehouse in Poland. 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. To separate the MPL 35x35x10 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, 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.
Plate magnets MPL 35x35x10 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as fasteners under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 35x35x10 / 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (35x35 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 35 mm (length), 35 mm (width), and 10 mm (thickness). The key parameter here is the holding force amounting to approximately 26.88 kg (force ~263.71 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of neodymium magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They have unchanged lifting capacity, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
  • Magnets perfectly protect themselves against loss of magnetization caused by external fields,
  • A magnet with a metallic gold surface has better aesthetics,
  • Magnets have maximum magnetic induction on the active area,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
  • Thanks to modularity in forming and the ability to customize to complex applications,
  • Wide application in innovative solutions – they are used in hard drives, brushless drives, precision medical tools, as well as complex engineering applications.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of NdFeB magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated shapes in magnets, we propose using cover - magnetic holder.
  • Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these products are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The specified lifting capacity refers to the maximum value, obtained under optimal environment, meaning:
  • with the use of a sheet made of special test steel, ensuring maximum field concentration
  • with a cross-section no less than 10 mm
  • characterized by lack of roughness
  • under conditions of no distance (metal-to-metal)
  • during pulling in a direction vertical to the mounting surface
  • in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Holding efficiency is influenced by working environment parameters, including (from priority):
  • Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Plate material – low-carbon steel gives the best results. Alloy admixtures decrease magnetic properties and lifting capacity.
  • Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
  • Thermal factor – high temperature reduces pulling force. Too high temperature can permanently demagnetize 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. In addition, even a slight gap between the magnet and the plate lowers the holding force.

Safety rules for work with neodymium magnets
Choking Hazard

Always keep magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are life-threatening.

GPS and phone interference

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can permanently damage the sensors in your phone.

Operating temperature

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Dust is flammable

Fire hazard: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Crushing risk

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Danger to pacemakers

People with a heart stimulator must keep an large gap from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Keep away from computers

Avoid bringing magnets near a wallet, computer, or TV. The magnetic field can destroy these devices and wipe information from cards.

Beware of splinters

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Nickel allergy

Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands or choose coated magnets.

Immense force

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

Warning! Looking for details? Read our article: Are neodymium magnets dangerous?