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MPL 10x7x3 / N38 - lamellar magnet

lamellar magnet

Catalog no 020115

GTIN/EAN: 5906301811213

5.00

length

10 mm [±0,1 mm]

Width

7 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

1.58 g

Magnetization Direction

↑ axial

Load capacity

2.02 kg / 19.82 N

Magnetic Induction

339.79 mT / 3398 Gs

Coating

[NiCuNi] Nickel

0.849 with VAT / pcs + price for transport

0.690 ZŁ net + 23% VAT / pcs

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Detailed specification - MPL 10x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 10x7x3 / N38 - lamellar magnet

properties
properties values
Cat. no. 020115
GTIN/EAN 5906301811213
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 10 mm [±0,1 mm]
Width 7 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 1.58 g
Magnetization Direction ↑ axial
Load capacity ~ ? 2.02 kg / 19.82 N
Magnetic Induction ~ ? 339.79 mT / 3398 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 10x7x3 / 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 magnet - report

Presented values represent the result of a engineering analysis. Values are based on algorithms for the class Nd2Fe14B. Operational performance may differ from theoretical values. Use these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (pull vs distance) - power drop
MPL 10x7x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3396 Gs
339.6 mT
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
warning
1 mm 2727 Gs
272.7 mT
1.30 kg / 2.87 pounds
1303.2 g / 12.8 N
weak grip
2 mm 2053 Gs
205.3 mT
0.74 kg / 1.63 pounds
738.2 g / 7.2 N
weak grip
3 mm 1502 Gs
150.2 mT
0.40 kg / 0.87 pounds
395.2 g / 3.9 N
weak grip
5 mm 803 Gs
80.3 mT
0.11 kg / 0.25 pounds
113.0 g / 1.1 N
weak grip
10 mm 216 Gs
21.6 mT
0.01 kg / 0.02 pounds
8.2 g / 0.1 N
weak grip
15 mm 82 Gs
8.2 mT
0.00 kg / 0.00 pounds
1.2 g / 0.0 N
weak grip
20 mm 39 Gs
3.9 mT
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
weak grip
30 mm 13 Gs
1.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Sliding load (vertical surface)
MPL 10x7x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.40 kg / 0.89 pounds
404.0 g / 4.0 N
1 mm Stal (~0.2) 0.26 kg / 0.57 pounds
260.0 g / 2.6 N
2 mm Stal (~0.2) 0.15 kg / 0.33 pounds
148.0 g / 1.5 N
3 mm Stal (~0.2) 0.08 kg / 0.18 pounds
80.0 g / 0.8 N
5 mm Stal (~0.2) 0.02 kg / 0.05 pounds
22.0 g / 0.2 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
MPL 10x7x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.61 kg / 1.34 pounds
606.0 g / 5.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.40 kg / 0.89 pounds
404.0 g / 4.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.20 kg / 0.45 pounds
202.0 g / 2.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.01 kg / 2.23 pounds
1010.0 g / 9.9 N

Table 4: Material efficiency (saturation) - power losses
MPL 10x7x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.20 kg / 0.45 pounds
202.0 g / 2.0 N
1 mm
25%
0.51 kg / 1.11 pounds
505.0 g / 5.0 N
2 mm
50%
1.01 kg / 2.23 pounds
1010.0 g / 9.9 N
3 mm
75%
1.52 kg / 3.34 pounds
1515.0 g / 14.9 N
5 mm
100%
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
10 mm
100%
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
11 mm
100%
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
12 mm
100%
2.02 kg / 4.45 pounds
2020.0 g / 19.8 N

Table 5: Thermal stability (material behavior) - resistance threshold
MPL 10x7x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 2.02 kg / 4.45 pounds
2020.0 g / 19.8 N
OK
40 °C -2.2% 1.98 kg / 4.36 pounds
1975.6 g / 19.4 N
OK
60 °C -4.4% 1.93 kg / 4.26 pounds
1931.1 g / 18.9 N
80 °C -6.6% 1.89 kg / 4.16 pounds
1886.7 g / 18.5 N
100 °C -28.8% 1.44 kg / 3.17 pounds
1438.2 g / 14.1 N

Table 6: Two magnets (attraction) - field collision
MPL 10x7x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 4.98 kg / 10.97 pounds
4 893 Gs
0.75 kg / 1.65 pounds
746 g / 7.3 N
N/A
1 mm 4.09 kg / 9.01 pounds
6 155 Gs
0.61 kg / 1.35 pounds
613 g / 6.0 N
3.68 kg / 8.11 pounds
~0 Gs
2 mm 3.21 kg / 7.08 pounds
5 455 Gs
0.48 kg / 1.06 pounds
482 g / 4.7 N
2.89 kg / 6.37 pounds
~0 Gs
3 mm 2.44 kg / 5.39 pounds
4 758 Gs
0.37 kg / 0.81 pounds
366 g / 3.6 N
2.20 kg / 4.85 pounds
~0 Gs
5 mm 1.34 kg / 2.94 pounds
3 518 Gs
0.20 kg / 0.44 pounds
200 g / 2.0 N
1.20 kg / 2.65 pounds
~0 Gs
10 mm 0.28 kg / 0.61 pounds
1 606 Gs
0.04 kg / 0.09 pounds
42 g / 0.4 N
0.25 kg / 0.55 pounds
~0 Gs
20 mm 0.02 kg / 0.04 pounds
433 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
0.02 kg / 0.04 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
43 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
26 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
17 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
11 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
8 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
6 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Protective zones (implants) - precautionary measures
MPL 10x7x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.5 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Timepiece 20 Gs (2.0 mT) 3.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Car key 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Impact energy (cracking risk) - collision effects
MPL 10x7x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 36.15 km/h
(10.04 m/s)
0.08 J
30 mm 62.46 km/h
(17.35 m/s)
0.24 J
50 mm 80.63 km/h
(22.40 m/s)
0.40 J
100 mm 114.03 km/h
(31.68 m/s)
0.79 J

Table 9: Anti-corrosion coating durability
MPL 10x7x3 / 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)

Table 10: Construction data (Pc)
MPL 10x7x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 480 Mx 24.8 µWb
Pc Coefficient 0.42 Low (Flat)

Table 11: Physics of underwater searching
MPL 10x7x3 / N38

Environment Effective steel pull Effect
Air (land) 2.02 kg Standard
Water (riverbed) 2.31 kg
(+0.29 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

*Caution: On a vertical wall, the magnet retains only a fraction of its max power.

2. Steel thickness impact

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.42

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 specification and ecology
Elemental analysis
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: 020115-2026
Quick Unit Converter
Magnet pull force

Magnetic Induction

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Component MPL 10x7x3 / 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 19.82 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.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 10x7x3 / 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.
Plate magnets MPL 10x7x3 / N38 are the foundation for many industrial devices, such as filters catching filings and linear motors. Thanks to the flat surface and high force (approx. 2.02 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. 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).
Standardly, the MPL 10x7x3 / N38 model is magnetized through the thickness (dimension 3 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 (10x7 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.
This model is characterized by dimensions 10x7x3 mm, which, at a weight of 1.58 g, makes it an element with high energy density. It is a magnetic block with dimensions 10x7x3 mm and a self-weight of 1.58 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They have stable power, and over more than 10 years their performance decreases symbolically – ~1% (according to theory),
  • They have excellent resistance to weakening of magnetic properties due to external fields,
  • By covering with a lustrous coating of silver, the element gains an elegant look,
  • Magnetic induction on the top side of the magnet turns out to be extremely intense,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
  • Possibility of exact modeling as well as adapting to defined applications,
  • Significant place in high-tech industry – they are utilized in magnetic memories, electric drive systems, diagnostic systems, and modern systems.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of NdFeB magnets:
  • At strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing threads and complicated forms in magnets, we propose using a housing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Breakaway strength of the magnet in ideal conditionswhat affects it?

Information about lifting capacity was defined for ideal contact conditions, including:
  • on a base made of structural steel, perfectly concentrating the magnetic flux
  • whose thickness reaches at least 10 mm
  • characterized by lack of roughness
  • without any clearance between the magnet and steel
  • under vertical force vector (90-degree angle)
  • at temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Please note that the working load may be lower subject to elements below, in order of importance:
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Material type – the best choice is high-permeability steel. Cast iron may attract less.
  • Base smoothness – the more even the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.

Precautions when working with NdFeB magnets
Fire risk

Machining of NdFeB material carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Permanent damage

Keep cool. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Skin irritation risks

It is widely known that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid direct skin contact or opt for coated magnets.

Swallowing risk

Neodymium magnets are not intended for children. Eating multiple magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires immediate surgery.

Warning for heart patients

Warning for patients: Powerful magnets affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.

Compass and GPS

Note: rare earth magnets generate a field that interferes with sensitive sensors. Keep a safe distance from your mobile, tablet, and navigation systems.

Eye protection

Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets will cause them shattering into shards.

Respect the power

Before use, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Protect data

Powerful magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Crushing force

Large magnets can crush fingers instantly. Under no circumstances place your hand betwixt two strong magnets.

Important! Learn more about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98