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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

bulk discounts:

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Parameters as well as form of neodymium magnets can be estimated on our force calculator.

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Technical details - 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 analysis of the product - data

The following data constitute the result of a physical simulation. Values were calculated on models for the class Nd2Fe14B. Real-world conditions may differ from theoretical values. Treat these data as a reference point for designers.

Table 1: Static force (pull vs distance) - characteristics
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 pounds
340.0 g / 3.3 N
weak grip
1 mm 1514 Gs
151.4 mT
0.18 kg / 0.39 pounds
177.8 g / 1.7 N
weak grip
2 mm 922 Gs
92.2 mT
0.07 kg / 0.15 pounds
65.9 g / 0.6 N
weak grip
3 mm 543 Gs
54.3 mT
0.02 kg / 0.05 pounds
22.9 g / 0.2 N
weak grip
5 mm 209 Gs
20.9 mT
0.00 kg / 0.01 pounds
3.4 g / 0.0 N
weak grip
10 mm 38 Gs
3.8 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip
15 mm 13 Gs
1.3 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
20 mm 6 Gs
0.6 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 hold (vertical surface)
MPL 5x5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.07 kg / 0.15 pounds
68.0 g / 0.7 N
1 mm Stal (~0.2) 0.04 kg / 0.08 pounds
36.0 g / 0.4 N
2 mm Stal (~0.2) 0.01 kg / 0.03 pounds
14.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 g / 0.0 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: Vertical assembly (shearing) - 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 pounds
102.0 g / 1.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.07 kg / 0.15 pounds
68.0 g / 0.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.03 kg / 0.07 pounds
34.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.17 kg / 0.37 pounds
170.0 g / 1.7 N

Table 4: Steel thickness (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 pounds
34.0 g / 0.3 N
1 mm
25%
0.09 kg / 0.19 pounds
85.0 g / 0.8 N
2 mm
50%
0.17 kg / 0.37 pounds
170.0 g / 1.7 N
3 mm
75%
0.26 kg / 0.56 pounds
255.0 g / 2.5 N
5 mm
100%
0.34 kg / 0.75 pounds
340.0 g / 3.3 N
10 mm
100%
0.34 kg / 0.75 pounds
340.0 g / 3.3 N
11 mm
100%
0.34 kg / 0.75 pounds
340.0 g / 3.3 N
12 mm
100%
0.34 kg / 0.75 pounds
340.0 g / 3.3 N

Table 5: Working in heat (stability) - thermal limit
MPL 5x5x1 / N38

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

Table 6: Two magnets (attraction) - 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 pounds
3 601 Gs
0.10 kg / 0.22 pounds
101 g / 1.0 N
N/A
1 mm 0.52 kg / 1.15 pounds
3 682 Gs
0.08 kg / 0.17 pounds
78 g / 0.8 N
0.47 kg / 1.04 pounds
~0 Gs
2 mm 0.35 kg / 0.78 pounds
3 028 Gs
0.05 kg / 0.12 pounds
53 g / 0.5 N
0.32 kg / 0.70 pounds
~0 Gs
3 mm 0.22 kg / 0.48 pounds
2 388 Gs
0.03 kg / 0.07 pounds
33 g / 0.3 N
0.20 kg / 0.44 pounds
~0 Gs
5 mm 0.08 kg / 0.17 pounds
1 413 Gs
0.01 kg / 0.03 pounds
12 g / 0.1 N
0.07 kg / 0.15 pounds
~0 Gs
10 mm 0.01 kg / 0.01 pounds
417 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
77 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
6 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
3 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
2 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
1 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: Safety (HSE) (implants) - precautionary measures
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
Mechanical watch 20 Gs (2.0 mT) 1.5 cm
Mobile device 40 Gs (4.0 mT) 1.0 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: Impact energy (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: Coating parameters (durability)
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: Electrical 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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Wall mount (shear)

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

2. Steel saturation

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

3. Heat tolerance

*For N38 material, the max working temp is 80°C.

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

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

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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
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%
Ecology and recycling (GPSR)
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
Magnet Unit Converter
Magnet pull force

Magnetic Induction

See more proposals

This product is an extremely strong magnet in the shape of a plate made of NdFeB material, which, with dimensions of 5x5x1 mm and a weight of 0.19 g, guarantees the highest quality connection. As a block magnet with high power (approx. 0.34 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.
The key to success is shifting 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 0.34 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. 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.
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).
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. 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 5x5x1 mm, which, at a weight of 0.19 g, makes it an element with high energy density. It is a magnetic block with dimensions 5x5x1 mm and a self-weight of 0.19 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Besides their remarkable field intensity, neodymium magnets offer the following advantages:
  • Their magnetic field remains stable, and after around ten years it drops only by ~1% (according to research),
  • Magnets very well protect themselves against demagnetization caused by foreign field sources,
  • A magnet with a metallic gold surface is more attractive,
  • Magnetic induction on the working part of the magnet turns out to be extremely intense,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Thanks to modularity in shaping and the ability to customize to individual projects,
  • Wide application in innovative solutions – they find application in magnetic memories, drive modules, precision medical tools, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in miniature devices

Weaknesses

Characteristics of disadvantages of neodymium magnets and proposals for their use:
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a steel housing, which not only protects them against impacts but also raises their durability
  • Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 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
  • We suggest a housing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated shapes.
  • Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small elements of these devices can complicate diagnosis medical in case of swallowing.
  • With large orders the cost of neodymium magnets is economically unviable,

Pull force analysis

Highest magnetic holding forcewhat it depends on?

The force parameter is a theoretical maximum value executed under standard conditions:
  • on a plate made of mild steel, effectively closing the magnetic flux
  • with a thickness of at least 10 mm
  • with a plane cleaned and smooth
  • with total lack of distance (without paint)
  • during pulling in a direction perpendicular to the plane
  • at ambient temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

It is worth knowing that the working load may be lower influenced by the following factors, in order of importance:
  • Distance – existence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Direction of force – highest force is available only during perpendicular pulling. The shear force of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with neodymium magnets
Magnets are brittle

Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them breaking into small pieces.

Metal Allergy

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness appears, immediately stop working with magnets and wear gloves.

Immense force

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

Do not give to children

These products are not toys. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Electronic hazard

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

Phone sensors

GPS units and smartphones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can ruin the sensors in your phone.

Medical interference

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Do not overheat magnets

Avoid heat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, look for HT versions (H, SH, UH).

Combustion hazard

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

Hand protection

Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!

Attention! More info about risks in the article: Safety of working with magnets.