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MPL 10x10x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020110

GTIN/EAN: 5906301811169

5.00
Load capacity 3.84 kg / 37.71 N Magnetic Induction 539.91 mT / 5399 Gs
length
10 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
7.5 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
technical specifications »

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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.

PDF report Calculator
Need advice?

Contact us by phone +48 22 499 98 98 if you prefer drop us a message using request form through our site.
Strength as well as structure of a neodymium magnet can be analyzed with our magnetic calculator.

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Technical details - MPL 10x10x10 / N38 - lamellar magnet

Specification / characteristics - MPL 10x10x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020110
GTIN/EAN 5906301811169
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 10 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 7.5 g
Magnetization Direction ↑ axial
Load capacity ~ ? 3.84 kg / 37.71 N
Magnetic Induction ~ ? 539.91 mT / 5399 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 10x10x10 / 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 - technical parameters

Presented information constitute the result of a engineering calculation. Values rely on models for the class Nd2Fe14B. Operational performance might slightly differ from theoretical values. Treat these calculations as a reference point for designers.

Table 1: Static pull force (pull vs gap) - power drop
MPL 10x10x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5395 Gs
539.5 mT
 3.84 kg / 8.47 lbs
3840.0 g / 37.7 N
 medium risk
1 mm 4423 Gs
442.3 mT
 2.58 kg / 5.69 lbs
2580.1 g / 25.3 N
 medium risk
2 mm 3516 Gs
351.6 mT
 1.63 kg / 3.60 lbs
1631.0 g / 16.0 N
 low risk
3 mm 2751 Gs
275.1 mT
 1.00 kg / 2.20 lbs
998.0 g / 9.8 N
 low risk
5 mm 1671 Gs
167.1 mT
 0.37 kg / 0.81 lbs
368.5 g / 3.6 N
 low risk
10 mm 562 Gs
56.2 mT
 0.04 kg / 0.09 lbs
41.7 g / 0.4 N
 low risk
15 mm 244 Gs
24.4 mT
 0.01 kg / 0.02 lbs
7.8 g / 0.1 N
 low risk
20 mm 126 Gs
12.6 mT
 0.00 kg / 0.00 lbs
2.1 g / 0.0 N
 low risk
30 mm 46 Gs
4.6 mT
 0.00 kg / 0.00 lbs
0.3 g / 0.0 N
 low risk
50 mm 12 Gs
1.2 mT
 0.00 kg / 0.00 lbs
0.0 g / 0.0 N
 low risk
Pulling power weakens sharply with every subsequent millimeter of gap. Note that even the smallest gap (e.g., dirt, paint, dust) significantly diminishes the holding power. Neodymiums hold optimally during direct contact; gap nullifies the power. Analyze how rapidly the parameters drop, when the product does not touch directly to the steel surface. When planning the assembly, discard additional spacers.

Table 2: Vertical capacity (wall)
MPL 10x10x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.77 kg / 1.69 lbs
768.0 g / 7.5 N
1 mm Stal (~0.2) 0.52 kg / 1.14 lbs
516.0 g / 5.1 N
2 mm Stal (~0.2) 0.33 kg / 0.72 lbs
326.0 g / 3.2 N
3 mm Stal (~0.2) 0.20 kg / 0.44 lbs
200.0 g / 2.0 N
5 mm Stal (~0.2) 0.07 kg / 0.16 lbs
74.0 g / 0.7 N
10 mm Stal (~0.2) 0.01 kg / 0.02 lbs
8.0 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 table below calculates the theoretical holding capacity needed to start the downward movement of the magnet vertically against a upright metal surface (considering standard friction coefficient). This parameter varies with the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MPL 10x10x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.15 kg / 2.54 lbs
1152.0 g / 11.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.77 kg / 1.69 lbs
768.0 g / 7.5 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.38 kg / 0.85 lbs
384.0 g / 3.8 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
When mounting a element on a vertical wall (e.g., a fridge), it will only hold just approx. 1/5 of its nominal power. Gravity as well as a weak degree of grip mean that products move down easier than they detach. Want to create a hanger? Remember that the sliding force is much weaker than the maximum static pull force. On a painted metal, the magnet will slide down under a much lighter load. Utilizing a rubberized coating can effectively raise the stability.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MPL 10x10x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.38 kg / 0.85 lbs
384.0 g / 3.8 N
1 mm
25%
 0.96 kg / 2.12 lbs
960.0 g / 9.4 N
2 mm
50%
 1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
3 mm
75%
 2.88 kg / 6.35 lbs
2880.0 g / 28.3 N
5 mm
100%
 3.84 kg / 8.47 lbs
3840.0 g / 37.7 N
10 mm
100%
 3.84 kg / 8.47 lbs
3840.0 g / 37.7 N
11 mm
100%
 3.84 kg / 8.47 lbs
3840.0 g / 37.7 N
12 mm
100%
 3.84 kg / 8.47 lbs
3840.0 g / 37.7 N
A thin metal plate is unable to take in the entire magnetic field, which squanders power of the magnet. If you mount a strong magnet to a thin surface, the flux will penetrate right through and the attraction force will be weaker. To utilize full efficiency of this neodymium's power, you need a suitably thick element of metal. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the magnet shows lower pull force. We advise picking the steel cross-section according to the table below.

Table 5: Working in heat (material behavior) - thermal limit
MPL 10x10x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 3.84 kg / 8.47 lbs
3840.0 g / 37.7 N
 OK
40 °C -2.2% 3.76 kg / 8.28 lbs
3755.5 g / 36.8 N
 OK
60 °C -4.4% 3.67 kg / 8.09 lbs
3671.0 g / 36.0 N
 OK
80 °C -6.6% 3.59 kg / 7.91 lbs
3586.6 g / 35.2 N
100 °C -28.8% 2.73 kg / 6.03 lbs
2734.1 g / 26.8 N
Ordinary NdFeB products lose strength past the thermal threshold. Avoid high temperatures – heat can irreversibly demagnetize this product. With increasing heat, the neodymium's power temporarily decreases. Refrain from using this product in hot environments higher than its operating temperature limit. Ignoring the limit will cause permanent loss of magnetism.
*Technical advisory: Heat tolerance is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress compared to rod magnets. The danger warning in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 10x10x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 17.95 kg / 39.56 lbs
5 957 Gs
2.69 kg / 5.93 lbs
2692 g / 26.4 N
 N/A
1 mm 14.86 kg / 32.77 lbs
9 821 Gs
2.23 kg / 4.92 lbs
2230 g / 21.9 N
 13.38 kg / 29.49 lbs
~0 Gs
2 mm 12.06 kg / 26.58 lbs
8 845 Gs
1.81 kg / 3.99 lbs
1809 g / 17.7 N
 10.85 kg / 23.93 lbs
~0 Gs
3 mm 9.64 kg / 21.26 lbs
7 909 Gs
1.45 kg / 3.19 lbs
1446 g / 14.2 N
 8.68 kg / 19.13 lbs
~0 Gs
5 mm 5.98 kg / 13.18 lbs
6 228 Gs
0.90 kg / 1.98 lbs
897 g / 8.8 N
 5.38 kg / 11.86 lbs
~0 Gs
10 mm 1.72 kg / 3.80 lbs
3 343 Gs
0.26 kg / 0.57 lbs
258 g / 2.5 N
 1.55 kg / 3.42 lbs
~0 Gs
20 mm 0.20 kg / 0.43 lbs
1 125 Gs
0.03 kg / 0.06 lbs
29 g / 0.3 N
 0.18 kg / 0.39 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
146 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
92 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
62 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
43 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
32 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
24 Gs
0.00 kg / 0.00 lbs
0 g / 0.0 N
 0.00 kg / 0.00 lbs
~0 Gs
Two magnets attract each other from a much further distance than a magnet and sheet setup. The connection of two magnets generates a stronger field and a larger range of performance. Planning to create a strong closure? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when attracting two neodymiums, the pinch force is massive. The levitation is marginally weaker than the connection force, but still large.
*Flux density in repulsion mode reaches ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Estimates apply to friction force of a pair of same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MPL 10x10x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 7.0 cm
Hearing aid 10 Gs (1.0 mT) 5.5 cm
Timepiece 20 Gs (2.0 mT) 4.5 cm
Mobile device 40 Gs (4.0 mT) 3.5 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
A strong magnetic field is a serious hazard to electronics and medical implants. These neodymiums produce a field that disrupts operation of digital equipment. Notice: the invisible magnetic field penetrates the body and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MPL 10x10x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 17.02 km/h
(4.73 m/s)
 0.08 J
30 mm 17.15 km/h
(4.76 m/s)
 0.09 J
50 mm 17.15 km/h
(4.76 m/s)
 0.09 J
100 mm 17.15 km/h
(4.76 m/s)
 0.09 J
Neodymium magnets are very brittle – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely speeds with massive force. Impact energy can trigger coating fragments or dangerous crushing to fingers. Be sure to control the product during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when working with powerful specimens.

Table 9: Anti-corrosion coating durability
MPL 10x10x10 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (Pc)
MPL 10x10x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 504 Mx 55.0 µWb
Pc Coefficient 0.84 High (Stable)
Total magnetic flux emitted by the pole surface. Essential parameter in coil applications as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 10x10x10 / N38

Environment Effective steel pull Effect
Air (land) 3.84 kg Standard
Water (riverbed) 4.40 kg
(+0.56 kg buoyancy gain)
+14.5%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Caution: On a vertical surface, the magnet retains merely approx. 20-30% of its nominal pull.

2. Steel thickness impact

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

3. Temperature resistance

*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) = 0.84

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

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: 020110-2026
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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 10x10x10 mm and a weight of 7.5 g, guarantees the highest quality connection. As a magnetic bar with high power (approx. 3.84 kg), this product is available immediately from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 10x10x10 / 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of wind generators and material handling systems. 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. 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 10x10x10 / N38 model is magnetized axially (dimension 10 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. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 10x10x10 mm, which, at a weight of 7.5 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 10x10x10 mm and a self-weight of 7.5 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 rare earth magnets.

Pros

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They do not lose strength, even after around ten years – the decrease in lifting capacity is only ~1% (according to tests),
  • Magnets perfectly resist against demagnetization caused by ambient magnetic noise,
  • In other words, due to the smooth surface of gold, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • In view of the potential of free molding and customization to unique requirements, neodymium magnets can be manufactured in a variety of forms and dimensions, which expands the range of possible applications,
  • Significant place in advanced technology sectors – they are used in data components, drive modules, medical devices, also modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems

Cons

Drawbacks and weaknesses of neodymium magnets and ways of using them
  • At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • 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.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complex forms in magnets, we recommend using casing - magnetic mechanism.
  • Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these magnets can complicate diagnosis medical after entering the body.
  • Due to expensive raw materials, their price is higher than average,

Holding force characteristics

Magnetic strength at its maximum – what affects it?

The specified lifting capacity concerns the limit force, measured under optimal environment, namely:
  • using a base made of low-carbon steel, functioning as a ideal flux conductor
  • possessing a thickness of minimum 10 mm to ensure full flux closure
  • characterized by even structure
  • with zero gap (without coatings)
  • during detachment in a direction vertical to the plane
  • at temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Holding efficiency impacted by working environment parameters, mainly (from priority):
  • Clearance – existence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – 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 – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Surface finish – ideal contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Temperature – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Warnings
Dust is flammable

Mechanical processing of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Nickel coating and allergies

It is widely known that nickel (the usual finish) is a strong allergen. If you have an allergy, refrain from touching magnets with bare hands or select coated magnets.

Medical interference

Individuals with a heart stimulator should maintain an safe separation from magnets. The magnetism can disrupt the operation of the implant.

Hand protection

Large magnets can break fingers instantly. Do not place your hand betwixt two strong magnets.

Heat sensitivity

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.

Protective goggles

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching shards into the air. We recommend safety glasses.

GPS Danger

Be aware: neodymium magnets generate a field that interferes with sensitive sensors. Maintain a separation from your mobile, device, and navigation systems.

Protect data

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

Do not give to children

Absolutely keep magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.

Safe operation

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Attention! More info about hazards in the article: Magnet Safety Guide.