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MPL 13x10x5 / N35H - lamellar magnet

lamellar magnet

Catalog no 020119

GTIN/EAN: 5906301811251

5.00

length

13 mm [±0,1 mm]

Width

10 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

4.88 g

Magnetization Direction

↑ axial

Load capacity

4.03 kg / 39.54 N

Magnetic Induction

369.32 mT / 3693 Gs

Coating

[NiCuNi] Nickel

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2.58 ZŁ with VAT / pcs + price for transport

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Product card - MPL 13x10x5 / N35H - lamellar magnet

Specification / characteristics - MPL 13x10x5 / N35H - lamellar magnet

properties
properties values
Cat. no. 020119
GTIN/EAN 5906301811251
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 13 mm [±0,1 mm]
Width 10 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 4.88 g
Magnetization Direction ↑ axial
Load capacity ~ ? 4.03 kg / 39.54 N
Magnetic Induction ~ ? 369.32 mT / 3693 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N35H

Specification / characteristics MPL 13x10x5 / N35H - lamellar magnet
properties values units
remenance Br [min. - max.] ? 11.7-12.1 kGs
remenance Br [min. - max.] ? 1170-1210 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 17 kOe
actual internal force iHc ≥ 1353 kA/m
energy density [min. - max.] ? 33-35 BH max MGOe
energy density [min. - max.] ? 263-279 BH max KJ/m
max. temperature ? ≤ 120 °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 modeling of the product - data

These information constitute the outcome of a engineering simulation. Values rely on models for the material Nd2Fe14B. Actual performance might slightly deviate from the simulation results. Please consider these data as a supplementary guide during assembly planning.

Table 1: Static force (force vs gap) - characteristics
MPL 13x10x5 / N35H

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3691 Gs
369.1 mT
 4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
 medium risk
1 mm 3152 Gs
315.2 mT
 2.94 kg / 6.48 lbs
2938.4 g / 28.8 N
 medium risk
2 mm 2595 Gs
259.5 mT
 1.99 kg / 4.39 lbs
1991.8 g / 19.5 N
 low risk
3 mm 2089 Gs
208.9 mT
 1.29 kg / 2.85 lbs
1291.2 g / 12.7 N
 low risk
5 mm 1321 Gs
132.1 mT
 0.52 kg / 1.14 lbs
516.1 g / 5.1 N
 low risk
10 mm 455 Gs
45.5 mT
 0.06 kg / 0.14 lbs
61.2 g / 0.6 N
 low risk
15 mm 193 Gs
19.3 mT
 0.01 kg / 0.02 lbs
11.1 g / 0.1 N
 low risk
20 mm 97 Gs
9.7 mT
 0.00 kg / 0.01 lbs
2.8 g / 0.0 N
 low risk
30 mm 34 Gs
3.4 mT
 0.00 kg / 0.00 lbs
0.3 g / 0.0 N
 low risk
50 mm 8 Gs
0.8 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Magnetic force drops sharply with every subsequent millimeter of spacing. Remember that even a very thin break (e.g., dirt, varnish, dust) significantly weakens the grip. Neodymiums operate strongest in perfect adhesion; air break drastically cuts the force. See how flashily the parameters fall, when the magnet does not touch flatly to the steel surface. When designing the arrangement, avoid redundant distances.

Table 2: Sliding capacity (vertical surface)
MPL 13x10x5 / N35H

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.81 kg / 1.78 lbs
806.0 g / 7.9 N
1 mm Stal (~0.2) 0.59 kg / 1.30 lbs
588.0 g / 5.8 N
2 mm Stal (~0.2) 0.40 kg / 0.88 lbs
398.0 g / 3.9 N
3 mm Stal (~0.2) 0.26 kg / 0.57 lbs
258.0 g / 2.5 N
5 mm Stal (~0.2) 0.10 kg / 0.23 lbs
104.0 g / 1.0 N
10 mm Stal (~0.2) 0.01 kg / 0.03 lbs
12.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
The following data presents the theoretical weight limit necessary to cause the shifting of the magnet down on a upright metal surface (considering typical friction coefficient). The holding force depends on the distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MPL 13x10x5 / N35H

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.21 kg / 2.67 lbs
1209.0 g / 11.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.81 kg / 1.78 lbs
806.0 g / 7.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.40 kg / 0.89 lbs
403.0 g / 4.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
2.02 kg / 4.44 lbs
2015.0 g / 19.8 N
When hanging a element on a upright wall (e.g., a fridge), it you can count on only about 1/5 of nominal attraction strength. Gravitational force and a low friction coefficient influence the fact that holders slip faster than they pop off the substrate. Designing a hanger? Remember that the shear force is much weaker than the maximum static pull force. On a smooth steel, the element will slide down under a much lighter weight. Utilizing a rubberized pad can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MPL 13x10x5 / N35H

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.40 kg / 0.89 lbs
403.0 g / 4.0 N
1 mm
25%
 1.01 kg / 2.22 lbs
1007.5 g / 9.9 N
2 mm
50%
 2.02 kg / 4.44 lbs
2015.0 g / 19.8 N
3 mm
75%
 3.02 kg / 6.66 lbs
3022.5 g / 29.7 N
5 mm
100%
 4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
10 mm
100%
 4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
11 mm
100%
 4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
12 mm
100%
 4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
A too thin steel cannot focus the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To squeeze 100% of this magnet's potential, you need a suitably thick backing of metal. The saturation effect means that on sheet metal structures (e.g., thin profiles), the holder shows lower pull force. We advise picking the steel dimension based on the following data.

Table 5: Working in heat (material behavior) - resistance threshold
MPL 13x10x5 / N35H

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 4.03 kg / 8.88 lbs
4030.0 g / 39.5 N
 OK
80 °C -6.6% 3.76 kg / 8.30 lbs
3764.0 g / 36.9 N
120 °C -11.0% 3.59 kg / 7.91 lbs
3586.7 g / 35.2 N
140 °C -33.2% 2.69 kg / 5.93 lbs
2692.0 g / 26.4 N
Ordinary NdFeB products change their properties parameters past the thermal threshold. Protect against heat – excessive heat can irreversibly destroy this product. As the temperature rises, the neodymium's force briefly lowers. Do not use this product in hot environments higher than its working range. Exceeding the critical threshold will cause permanent loss of magnetism.
*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Flat magnets (pancake types) may lose charge permanently under lower heat stress compared to rod magnets. Red status in the table signals permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 13x10x5 / N35H

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 10.92 kg / 24.08 lbs
5 009 Gs
1.64 kg / 3.61 lbs
1638 g / 16.1 N
 N/A
1 mm 9.43 kg / 20.80 lbs
6 862 Gs
1.42 kg / 3.12 lbs
1415 g / 13.9 N
 8.49 kg / 18.72 lbs
~0 Gs
2 mm 7.96 kg / 17.55 lbs
6 304 Gs
1.19 kg / 2.63 lbs
1194 g / 11.7 N
 7.17 kg / 15.80 lbs
~0 Gs
3 mm 6.60 kg / 14.56 lbs
5 740 Gs
0.99 kg / 2.18 lbs
990 g / 9.7 N
 5.94 kg / 13.10 lbs
~0 Gs
5 mm 4.36 kg / 9.62 lbs
4 667 Gs
0.65 kg / 1.44 lbs
655 g / 6.4 N
 3.93 kg / 8.66 lbs
~0 Gs
10 mm 1.40 kg / 3.08 lbs
2 642 Gs
0.21 kg / 0.46 lbs
210 g / 2.1 N
 1.26 kg / 2.78 lbs
~0 Gs
20 mm 0.17 kg / 0.37 lbs
910 Gs
0.02 kg / 0.05 lbs
25 g / 0.2 N
 0.15 kg / 0.33 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
110 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
60 mm 0.00 kg / 0.00 lbs
68 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
70 mm 0.00 kg / 0.00 lbs
45 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
80 mm 0.00 kg / 0.00 lbs
31 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
90 mm 0.00 kg / 0.00 lbs
22 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
100 mm 0.00 kg / 0.00 lbs
17 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnetic products attract each other from a significantly greater distance than a neodymium and metal combination. The setup of magnet-to-magnet creates a more powerful interaction and a wider radius of operation. Designing a powerful holder? Apply two magnets instead of one magnet and a steel. Exercise caution that when attracting two neodymiums, the impact force is extreme. The levitation is marginally weaker than the attraction, but still large.
*Field value between like poles drops to ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Calculations show friction force of dual identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MPL 13x10x5 / N35H

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.0 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Mobile device 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 3.0 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm
Powerful magnet radiation poses a real danger to electronic devices as well as pacemakers. These NdFeB products generate a field that disrupts operation of digital equipment. Remember: the invisible magnetic field passes through tissues and housings. Increased vigilance must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MPL 13x10x5 / N35H

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 29.26 km/h
(8.13 m/s)
 0.16 J
30 mm 50.20 km/h
(13.94 m/s)
 0.47 J
50 mm 64.81 km/h
(18.00 m/s)
 0.79 J
100 mm 91.65 km/h
(25.46 m/s)
 1.58 J
NdFeB products are prone to chipping – a collision with steel can result in shattering. Pay attention to connection velocity – a neodymium left loose speeds with massive force. Impact energy can destroy the magnet or dangerous crushing to fingers. Be sure to control the product during bringing near metal so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear safety glasses when playing with powerful specimens.

Table 9: Surface protection spec
MPL 13x10x5 / N35H

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. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MPL 13x10x5 / N35H

Parameter Value SI Unit / Description
Magnetic Flux 4 919 Mx 49.2 µWb
Pc Coefficient 0.49 Low (Flat)
Total magnetic flux emitted by the pole surface. Essential parameter when building generators as well as sensors. The Pc coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
MPL 13x10x5 / N35H

Environment Effective steel pull Effect
Air (land) 4.03 kg Standard
Water (riverbed) 4.61 kg
(+0.58 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.
1. Sliding resistance

*Warning: On a vertical wall, the magnet holds only approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) significantly weakens 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) = 0.49

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.

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%
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: 020119-2026
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Component MPL 13x10x5 / N35H features a flat shape and professional pulling force, making it an ideal solution for building separators and machines. This magnetic block with a force of 39.54 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 sliding 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 13x10x5 / N35H 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 13x10x5 / N35H are the foundation for many industrial devices, such as filters catching filings 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.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. 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: 13 mm (length), 10 mm (width), and 5 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 4.03 kg (force ~39.54 N), which, with such a compact shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of rare earth magnets.

Benefits

Besides their durability, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
  • Neodymium magnets are distinguished by extremely resistant to loss of magnetic properties caused by external interference,
  • A magnet with a metallic silver surface looks better,
  • Magnets have exceptionally strong magnetic induction on the outer layer,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to freedom in designing and the ability to customize to complex applications,
  • Versatile presence in innovative solutions – they find application in computer drives, brushless drives, medical devices, also multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which makes them useful in small systems

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • 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 experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Limited ability of creating nuts in the magnet and complex shapes - preferred is a housing - mounting mechanism.
  • Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting capacity of the magnet – what contributes to it?

The specified lifting capacity refers to the maximum value, measured under optimal environment, namely:
  • using a base made of low-carbon steel, acting as a ideal flux conductor
  • with a thickness no less than 10 mm
  • with an ideally smooth touching surface
  • without the slightest clearance between the magnet and steel
  • during detachment in a direction vertical to the mounting surface
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

It is worth knowing that the magnet holding will differ influenced by the following factors, in order of importance:
  • Distance (between the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
  • Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
  • Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
  • Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

Precautions when working with NdFeB magnets
Data carriers

Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, timepieces).

Metal Allergy

Studies show that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid direct skin contact or choose versions in plastic housing.

Swallowing risk

Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Keep out of reach of children and animals.

Magnetic interference

A strong magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a device to prevent damaging the sensors.

Power loss in heat

Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Machining danger

Mechanical processing of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Crushing force

Danger of trauma: The attraction force is so immense that it can result in hematomas, crushing, and broken bones. Use thick gloves.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to handle the magnets.

Immense force

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Material brittleness

Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Security! Looking for details? Check our post: Why are neodymium magnets dangerous?