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MPL 5x5x1 / N38 - lamellar magnet

lamellar magnet

Catalog no 020170

GTIN/EAN: 5906301811763

5.00

length

5 mm [±0,1 mm]

Width

5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.19 g

Magnetization Direction

↑ axial

Load capacity

0.34 kg / 3.30 N

Magnetic Induction

209.53 mT / 2095 Gs

Coating

[NiCuNi] Nickel

0.1845 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Technical of the product - MPL 5x5x1 / N38 - lamellar magnet

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

properties
properties values
Cat. no. 020170
GTIN/EAN 5906301811763
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 mm [±0,1 mm]
Weight 0.19 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.34 kg / 3.30 N
Magnetic Induction ~ ? 209.53 mT / 2095 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 5x5x1 / 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 simulation of the magnet - report

These values constitute the direct effect of a mathematical analysis. Values rely on models for the material Nd2Fe14B. Real-world parameters might slightly differ. Use these data as a supplementary guide when designing systems.

Table 1: Static force (force vs gap) - power drop
MPL 5x5x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2094 Gs
209.4 mT
0.34 kg / 0.75 LBS
340.0 g / 3.3 N
low risk
1 mm 1514 Gs
151.4 mT
0.18 kg / 0.39 LBS
177.8 g / 1.7 N
low risk
2 mm 922 Gs
92.2 mT
0.07 kg / 0.15 LBS
65.9 g / 0.6 N
low risk
3 mm 543 Gs
54.3 mT
0.02 kg / 0.05 LBS
22.9 g / 0.2 N
low risk
5 mm 209 Gs
20.9 mT
0.00 kg / 0.01 LBS
3.4 g / 0.0 N
low risk
10 mm 38 Gs
3.8 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
low risk
15 mm 13 Gs
1.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
20 mm 6 Gs
0.6 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
30 mm 2 Gs
0.2 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 0 Gs
0.0 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Shear force (wall)
MPL 5x5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.07 kg / 0.15 LBS
68.0 g / 0.7 N
1 mm Stal (~0.2) 0.04 kg / 0.08 LBS
36.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 LBS
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 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 (sliding) - behavior on slippery surfaces
MPL 5x5x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.10 kg / 0.22 LBS
102.0 g / 1.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.07 kg / 0.15 LBS
68.0 g / 0.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.03 kg / 0.07 LBS
34.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.17 kg / 0.37 LBS
170.0 g / 1.7 N

Table 4: Material efficiency (substrate influence) - power losses
MPL 5x5x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.03 kg / 0.07 LBS
34.0 g / 0.3 N
1 mm
25%
0.09 kg / 0.19 LBS
85.0 g / 0.8 N
2 mm
50%
0.17 kg / 0.37 LBS
170.0 g / 1.7 N
3 mm
75%
0.26 kg / 0.56 LBS
255.0 g / 2.5 N
5 mm
100%
0.34 kg / 0.75 LBS
340.0 g / 3.3 N
10 mm
100%
0.34 kg / 0.75 LBS
340.0 g / 3.3 N
11 mm
100%
0.34 kg / 0.75 LBS
340.0 g / 3.3 N
12 mm
100%
0.34 kg / 0.75 LBS
340.0 g / 3.3 N

Table 5: Working in heat (material behavior) - power drop
MPL 5x5x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.34 kg / 0.75 LBS
340.0 g / 3.3 N
OK
40 °C -2.2% 0.33 kg / 0.73 LBS
332.5 g / 3.3 N
OK
60 °C -4.4% 0.33 kg / 0.72 LBS
325.0 g / 3.2 N
80 °C -6.6% 0.32 kg / 0.70 LBS
317.6 g / 3.1 N
100 °C -28.8% 0.24 kg / 0.53 LBS
242.1 g / 2.4 N

Table 6: Two magnets (repulsion) - field collision
MPL 5x5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.68 kg / 1.49 LBS
3 601 Gs
0.10 kg / 0.22 LBS
101 g / 1.0 N
N/A
1 mm 0.52 kg / 1.15 LBS
3 682 Gs
0.08 kg / 0.17 LBS
78 g / 0.8 N
0.47 kg / 1.04 LBS
~0 Gs
2 mm 0.35 kg / 0.78 LBS
3 028 Gs
0.05 kg / 0.12 LBS
53 g / 0.5 N
0.32 kg / 0.70 LBS
~0 Gs
3 mm 0.22 kg / 0.48 LBS
2 388 Gs
0.03 kg / 0.07 LBS
33 g / 0.3 N
0.20 kg / 0.44 LBS
~0 Gs
5 mm 0.08 kg / 0.17 LBS
1 413 Gs
0.01 kg / 0.03 LBS
12 g / 0.1 N
0.07 kg / 0.15 LBS
~0 Gs
10 mm 0.01 kg / 0.01 LBS
417 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
77 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
50 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
60 mm 0.00 kg / 0.00 LBS
3 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
2 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
1 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
1 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
1 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (implants) - warnings
MPL 5x5x1 / 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
Timepiece 20 Gs (2.0 mT) 1.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 1.0 cm
Remote 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: Dynamics (cracking risk) - warning
MPL 5x5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 42.67 km/h
(11.85 m/s)
0.01 J
30 mm 73.89 km/h
(20.53 m/s)
0.04 J
50 mm 95.40 km/h
(26.50 m/s)
0.07 J
100 mm 134.91 km/h
(37.48 m/s)
0.13 J

Table 9: Corrosion resistance
MPL 5x5x1 / 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 / N38

Parameter Value SI Unit / Description
Magnetic Flux 615 Mx 6.2 µWb
Pc Coefficient 0.26 Low (Flat)

Table 11: Physics of underwater searching
MPL 5x5x1 / N38

Environment Effective steel pull Effect
Air (land) 0.34 kg Standard
Water (riverbed) 0.39 kg
(+0.05 kg buoyancy gain)
+14.5%
Rust risk: 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

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

2. Efficiency vs thickness

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.26

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%
Environmental data
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: 020170-2026
Quick Unit Converter
Pulling force

Field Strength

Other proposals

Model MPL 5x5x1 / N38 features a low profile and industrial pulling force, making it a perfect solution for building separators and machines. This magnetic block with a force of 3.30 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. Watch your fingers! Magnets with a force of 0.34 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 wind generators and material handling systems. They work great as invisible mounts under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
For mounting flat magnets MPL 5x5x1 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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 / N38 model is magnetized axially (dimension 1 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.
The presented product is a neodymium magnet with precisely defined parameters: 5 mm (length), 5 mm (width), and 1 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 0.34 kg (force ~3.30 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Apart from their superior power, neodymium magnets have these key benefits:
  • They do not lose strength, even during around 10 years – the drop in power is only ~1% (according to tests),
  • They retain their magnetic properties even under external field action,
  • The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Neodymium magnets achieve maximum magnetic induction on a contact point, which allows for strong attraction,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Due to the option of accurate shaping and customization to individualized projects, magnetic components can be created in a broad palette of forms and dimensions, which amplifies use scope,
  • Versatile presence in modern industrial fields – they are commonly used in data components, electric motors, advanced medical instruments, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in small systems

Cons

Cons of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in creating threads and complicated forms in magnets, we propose using a housing - magnetic holder.
  • Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these magnets can be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

The lifting capacity listed is a theoretical maximum value conducted under specific, ideal conditions:
  • on a block made of mild steel, optimally conducting the magnetic field
  • whose thickness is min. 10 mm
  • with a plane cleaned and smooth
  • under conditions of gap-free contact (surface-to-surface)
  • for force applied at a right angle (pull-off, not shear)
  • at ambient temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

Real force is influenced by working environment parameters, mainly (from most important):
  • Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Direction of force – highest force is obtained only during perpendicular pulling. The force required to slide of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Metal type – not every steel attracts identically. High carbon content weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safety rules for work with neodymium magnets
Operating temperature

Do not overheat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, look for HT versions (H, SH, UH).

Flammability

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Hand protection

Risk of injury: The attraction force is so great that it can cause hematomas, pinching, and broken bones. Protective gloves are recommended.

Respect the power

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

Life threat

Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

Material brittleness

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them cracking into shards.

Keep away from computers

Data protection: Neodymium magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, mechanical watches).

Impact on smartphones

A strong magnetic field negatively affects the functioning of compasses in smartphones and GPS navigation. Keep magnets close to a device to prevent breaking the sensors.

Nickel coating and allergies

Studies show that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, prevent touching magnets with bare hands and select encased magnets.

This is not a toy

Adult use only. Small elements can be swallowed, leading to serious injuries. Keep away from children and animals.

Attention! Need more info? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98