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MPL 10x7x3 / N38 - lamellar magnet

lamellar magnet

Catalog no 020115

GTIN/EAN: 5906301811213

5.00
Load capacity 2.02 kg / 19.82 N Magnetic Induction 339.79 mT / 3398 Gs
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
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Physical properties - 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
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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

Physical analysis of the magnet - report

Presented data are the outcome of a engineering analysis. Values were calculated on models for the class Nd2Fe14B. Operational parameters may differ from theoretical values. Use these data as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs distance) - interaction chart
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 LBS
2020.0 g / 19.8 N
medium risk
1 mm 2727 Gs
272.7 mT
1.30 kg / 2.87 LBS
1303.2 g / 12.8 N
weak grip
2 mm 2053 Gs
205.3 mT
0.74 kg / 1.63 LBS
738.2 g / 7.2 N
weak grip
3 mm 1502 Gs
150.2 mT
0.40 kg / 0.87 LBS
395.2 g / 3.9 N
weak grip
5 mm 803 Gs
80.3 mT
0.11 kg / 0.25 LBS
113.0 g / 1.1 N
weak grip
10 mm 216 Gs
21.6 mT
0.01 kg / 0.02 LBS
8.2 g / 0.1 N
weak grip
15 mm 82 Gs
8.2 mT
0.00 kg / 0.00 LBS
1.2 g / 0.0 N
weak grip
20 mm 39 Gs
3.9 mT
0.00 kg / 0.00 LBS
0.3 g / 0.0 N
weak grip
30 mm 13 Gs
1.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
50 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

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

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

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
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 LBS
606.0 g / 5.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.40 kg / 0.89 LBS
404.0 g / 4.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.20 kg / 0.45 LBS
202.0 g / 2.0 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.01 kg / 2.23 LBS
1010.0 g / 9.9 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 10x7x3 / N38

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

Table 5: Working in heat (stability) - thermal limit
MPL 10x7x3 / N38

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

Table 6: Two magnets (attraction) - forces in the system
MPL 10x7x3 / N38

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

Table 7: Hazards (implants) - warnings
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
Mechanical watch 20 Gs (2.0 mT) 3.0 cm
Mobile device 40 Gs (4.0 mT) 2.0 cm
Remote 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) - warning
MPL 10x7x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 24.91 km/h
(6.92 m/s)
0.04 J
30 mm 24.98 km/h
(6.94 m/s)
0.04 J
50 mm 24.97 km/h
(6.94 m/s)
0.04 J
100 mm 24.98 km/h
(6.94 m/s)
0.04 J

Table 9: Corrosion resistance
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: Electrical data (Flux)
MPL 10x7x3 / N38

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

Table 11: Hydrostatics and buoyancy
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%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

1. Vertical hold

*Warning: On a vertical surface, the magnet holds only approx. 20-30% of its max power.

2. Steel thickness impact

*Thin metal sheet (e.g. computer case) significantly limits the holding force.

3. Thermal stability

*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 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: 020115-2026
Magnet Unit Converter

Pulling force


Magnetic Induction

See also proposals

Model MPL 10x7x3 / N38 features a flat shape and professional pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 19.82 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating protects 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. Watch your fingers! Magnets with a force of 2.02 kg can pinch very hard and cause hematomas. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
They constitute a key element in the production of generators and material handling systems. They work great as invisible mounts under tiles, wood, or glass. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 10x7x3 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. 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. 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.
This model is characterized by dimensions 10x7x3 mm, which, at a weight of 1.58 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 2.02 kg (force ~19.82 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of rare earth magnets.

Strengths

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They retain full power for around ten years – the drop is just ~1% (in theory),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • Thanks to the elegant finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
  • Magnetic induction on the working part of the magnet turns out to be exceptional,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to flexibility in forming and the ability to adapt to unusual requirements,
  • Huge importance in modern technologies – they serve a role in computer drives, brushless drives, precision medical tools, as well as complex engineering applications.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Cons

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complex forms in magnets, we recommend using casing - magnetic mechanism.
  • Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products are able to disrupt the diagnostic process medical when they are in the body.
  • With mass production the cost of neodymium magnets can be a barrier,

Pull force analysis

Detachment force of the magnet in optimal conditionswhat contributes to it?

The force parameter is a measurement result conducted under standard conditions:
  • on a plate made of mild steel, perfectly concentrating the magnetic flux
  • possessing a thickness of min. 10 mm to avoid saturation
  • with a surface perfectly flat
  • with direct contact (without paint)
  • under perpendicular force direction (90-degree angle)
  • in temp. approx. 20°C

Determinants of practical lifting force of a magnet

In practice, the real power is determined by many variables, presented from most significant:
  • Clearance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Material composition – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Base smoothness – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with neodymium magnets
Safe distance

Do not bring magnets close to a wallet, computer, or TV. The magnetism can destroy these devices and wipe information from cards.

Allergy Warning

Studies show that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from direct skin contact or select encased magnets.

GPS and phone interference

Note: neodymium magnets produce a field that disrupts precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.

Machining danger

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

ICD Warning

For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Crushing risk

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

Fragile material

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them breaking into small pieces.

Thermal limits

Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Powerful field

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

Do not give to children

Strictly store magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are fatal.

Attention! Details about risks in the article: Magnet Safety Guide.