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MPL 5x5x1.2 / N38 - lamellar magnet

lamellar magnet

Catalog no 020171

GTIN/EAN: 5906301811770

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1.2 mm [±0,1 mm]

Weight

0.22 g

Magnetization Direction

↑ axial

Load capacity

0.44 kg / 4.28 N

Magnetic Induction

245.17 mT / 2452 Gs

Coating

[NiCuNi] Nickel

0.1845 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Technical details - MPL 5x5x1.2 / N38 - lamellar magnet

Specification / characteristics - MPL 5x5x1.2 / N38 - lamellar magnet

properties
properties values
Cat. no. 020171
GTIN/EAN 5906301811770
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 5 mm [±0,1 mm]
Width 5 mm [±0,1 mm]
Height 1.2 mm [±0,1 mm]
Weight 0.22 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.44 kg / 4.28 N
Magnetic Induction ~ ? 245.17 mT / 2452 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1.2 / 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

Physical analysis of the product - report

The following data represent the direct effect of a engineering analysis. Values are based on algorithms for the material Nd2Fe14B. Real-world parameters might slightly differ. Treat these data as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - power drop
MPL 5x5x1.2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2450 Gs
245.0 mT
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
weak grip
1 mm 1739 Gs
173.9 mT
0.22 kg / 0.49 pounds
221.8 g / 2.2 N
weak grip
2 mm 1054 Gs
105.4 mT
0.08 kg / 0.18 pounds
81.4 g / 0.8 N
weak grip
3 mm 622 Gs
62.2 mT
0.03 kg / 0.06 pounds
28.4 g / 0.3 N
weak grip
5 mm 241 Gs
24.1 mT
0.00 kg / 0.01 pounds
4.3 g / 0.0 N
weak grip
10 mm 45 Gs
4.5 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip
15 mm 15 Gs
1.5 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
20 mm 7 Gs
0.7 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
30 mm 2 Gs
0.2 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
50 mm 0 Gs
0.0 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Vertical capacity (vertical surface)
MPL 5x5x1.2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.09 kg / 0.19 pounds
88.0 g / 0.9 N
1 mm Stal (~0.2) 0.04 kg / 0.10 pounds
44.0 g / 0.4 N
2 mm Stal (~0.2) 0.02 kg / 0.04 pounds
16.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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: Wall mounting (sliding) - vertical pull
MPL 5x5x1.2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.13 kg / 0.29 pounds
132.0 g / 1.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.09 kg / 0.19 pounds
88.0 g / 0.9 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.04 kg / 0.10 pounds
44.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.22 kg / 0.49 pounds
220.0 g / 2.2 N

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 5x5x1.2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.04 kg / 0.10 pounds
44.0 g / 0.4 N
1 mm
25%
0.11 kg / 0.24 pounds
110.0 g / 1.1 N
2 mm
50%
0.22 kg / 0.49 pounds
220.0 g / 2.2 N
3 mm
75%
0.33 kg / 0.73 pounds
330.0 g / 3.2 N
5 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
10 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
11 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N
12 mm
100%
0.44 kg / 0.97 pounds
440.0 g / 4.3 N

Table 5: Thermal resistance (stability) - power drop
MPL 5x5x1.2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.44 kg / 0.97 pounds
440.0 g / 4.3 N
OK
40 °C -2.2% 0.43 kg / 0.95 pounds
430.3 g / 4.2 N
OK
60 °C -4.4% 0.42 kg / 0.93 pounds
420.6 g / 4.1 N
80 °C -6.6% 0.41 kg / 0.91 pounds
411.0 g / 4.0 N
100 °C -28.8% 0.31 kg / 0.69 pounds
313.3 g / 3.1 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MPL 5x5x1.2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.92 kg / 2.04 pounds
4 027 Gs
0.14 kg / 0.31 pounds
139 g / 1.4 N
N/A
1 mm 0.70 kg / 1.54 pounds
4 260 Gs
0.10 kg / 0.23 pounds
105 g / 1.0 N
0.63 kg / 1.39 pounds
~0 Gs
2 mm 0.47 kg / 1.03 pounds
3 478 Gs
0.07 kg / 0.15 pounds
70 g / 0.7 N
0.42 kg / 0.93 pounds
~0 Gs
3 mm 0.29 kg / 0.63 pounds
2 734 Gs
0.04 kg / 0.10 pounds
43 g / 0.4 N
0.26 kg / 0.57 pounds
~0 Gs
5 mm 0.10 kg / 0.22 pounds
1 617 Gs
0.02 kg / 0.03 pounds
15 g / 0.1 N
0.09 kg / 0.20 pounds
~0 Gs
10 mm 0.01 kg / 0.02 pounds
482 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
90 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
7 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
4 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
3 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
2 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
1 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
1 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Hazards (implants) - precautionary measures
MPL 5x5x1.2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.5 cm
Hearing aid 10 Gs (1.0 mT) 2.0 cm
Mechanical watch 20 Gs (2.0 mT) 1.5 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.0 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Collisions (cracking risk) - collision effects
MPL 5x5x1.2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 45.11 km/h
(12.53 m/s)
0.02 J
30 mm 78.12 km/h
(21.70 m/s)
0.05 J
50 mm 100.85 km/h
(28.01 m/s)
0.09 J
100 mm 142.63 km/h
(39.62 m/s)
0.17 J

Table 9: Surface protection spec
MPL 5x5x1.2 / 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 (Flux)
MPL 5x5x1.2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 695 Mx 7.0 µWb
Pc Coefficient 0.30 Low (Flat)

Table 11: Hydrostatics and buoyancy
MPL 5x5x1.2 / N38

Environment Effective steel pull Effect
Air (land) 0.44 kg Standard
Water (riverbed) 0.50 kg
(+0.06 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. Sliding resistance

*Warning: On a vertical wall, the magnet retains just approx. 20-30% of its max power.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) drastically limits the holding force.

3. Power loss vs temp

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.30

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: 020171-2026
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Magnet pull force

Magnetic Induction

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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 5x5x1.2 mm and a weight of 0.22 g, guarantees premium class connection. This rectangular block with a force of 4.28 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 0.44 kg can pinch very hard and cause hematomas. 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. Thanks to the flat surface and high force (approx. 0.44 kg), they are ideal as closers in furniture making and mounting elements in automation. Customers often choose this model for hanging tools 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 5x5x1.2 / N38 model is magnetized through the thickness (dimension 1.2 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 (5x5 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 5x5x1.2 mm, which, at a weight of 0.22 g, makes it an element with high energy density. It is a magnetic block with dimensions 5x5x1.2 mm and a self-weight of 0.22 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of Nd2Fe14B magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They do not lose power, even after approximately 10 years – the drop in lifting capacity is only ~1% (based on measurements),
  • They are resistant to demagnetization induced by external magnetic fields,
  • A magnet with a metallic silver surface is more attractive,
  • Magnets are distinguished by huge magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Due to the option of accurate forming and customization to custom projects, NdFeB magnets can be modeled in a broad palette of forms and dimensions, which increases their versatility,
  • Versatile presence in electronics industry – they are utilized in data components, drive modules, medical devices, also other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in compact constructions

Cons

Disadvantages of neodymium magnets:
  • At strong impacts they can crack, therefore we advise 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 strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in creating nuts and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these products are able to complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat affects it?

The lifting capacity listed is a result of laboratory testing conducted under specific, ideal conditions:
  • on a base made of structural steel, effectively closing the magnetic flux
  • with a cross-section minimum 10 mm
  • with a plane perfectly flat
  • with direct contact (without paint)
  • under vertical force vector (90-degree angle)
  • at room temperature

Lifting capacity in practice – influencing factors

Bear in mind that the working load may be lower subject to the following factors, starting with the most relevant:
  • Air gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to paint, corrosion or debris).
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick sheet does not close the flux, causing part of the flux to be lost into the air.
  • Steel type – low-carbon steel gives the best results. Higher carbon content reduce magnetic permeability and lifting capacity.
  • Surface structure – the more even the plate, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate reduces the holding force.

Precautions when working with neodymium magnets
Protective goggles

NdFeB magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them shattering into shards.

GPS Danger

Navigation devices and smartphones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.

No play value

Always store magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are tragic.

Keep away from computers

Intense magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Keep a distance of min. 10 cm.

Health Danger

Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.

Allergy Warning

Medical facts indicate that nickel (standard magnet coating) is a strong allergen. If you have an allergy, avoid direct skin contact or opt for versions in plastic housing.

Thermal limits

Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Flammability

Dust produced during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Physical harm

Big blocks can break fingers instantly. Do not place your hand between two attracting surfaces.

Caution required

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.

Security! Details about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98