Neodymium magnets – most powerful on the market

Want to buy really powerful magnets? We offer rich assortment of disc, cylindrical and ring magnets. They are ideal for home use, garage and model making. See products with fast shipping.

see price list and dimensions

Magnets for underwater searches

Begin your hobby with treasure salvaging! Our double-handle grips (F200, F400) provide grip certainty and immense power. Solid, corrosion-resistant housing and strong lines are reliable in rivers and lakes.

find your set

Reliable threaded grips

Proven solutions for mounting without drilling. Threaded mounts (external or internal) provide quick improvement of work on warehouses. Perfect for mounting lamps, detectors and ads.

check technical specs

🚀 Express processing: orders by 14:00 shipped immediately!

Dhit sp. z o.o.
Product available Ships tomorrow

MPL 15x2x30 / N38 - lamellar magnet

lamellar magnet

Catalog no 020121

GTIN/EAN: 5906301811275

5.00

length

15 mm [±0,1 mm]

Width

2 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

6.75 g

Magnetization Direction

→ diametrical

Load capacity

0.68 kg / 6.68 N

Magnetic Induction

614.34 mT / 6143 Gs

Coating

[NiCuNi] Nickel

4.75 with VAT / pcs + price for transport

3.86 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
3.86 ZŁ
4.75 ZŁ
price from 200 pcs
3.63 ZŁ
4.46 ZŁ
price from 650 pcs
3.40 ZŁ
4.18 ZŁ
Can't decide what to choose?

Pick up the phone and ask +48 888 99 98 98 otherwise send us a note via our online form the contact form page.
Parameters as well as shape of a neodymium magnet can be analyzed with our magnetic calculator.

Same-day processing for orders placed before 14:00.

Technical details - MPL 15x2x30 / N38 - lamellar magnet

Specification / characteristics - MPL 15x2x30 / N38 - lamellar magnet

properties
properties values
Cat. no. 020121
GTIN/EAN 5906301811275
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 15 mm [±0,1 mm]
Width 2 mm [±0,1 mm]
Height 30 mm [±0,1 mm]
Weight 6.75 g
Magnetization Direction → diametrical
Load capacity ~ ? 0.68 kg / 6.68 N
Magnetic Induction ~ ? 614.34 mT / 6143 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 15x2x30 / 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

Technical simulation of the assembly - data

The following information represent the result of a physical analysis. Results were calculated on models for the material Nd2Fe14B. Real-world performance may deviate from the simulation results. Treat these data as a reference point during assembly planning.

Table 1: Static force (pull vs distance) - power drop
MPL 15x2x30 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6128 Gs
612.8 mT
0.68 kg / 1.50 LBS
680.0 g / 6.7 N
weak grip
1 mm 3036 Gs
303.6 mT
0.17 kg / 0.37 LBS
166.8 g / 1.6 N
weak grip
2 mm 1736 Gs
173.6 mT
0.05 kg / 0.12 LBS
54.5 g / 0.5 N
weak grip
3 mm 1150 Gs
115.0 mT
0.02 kg / 0.05 LBS
23.9 g / 0.2 N
weak grip
5 mm 623 Gs
62.3 mT
0.01 kg / 0.02 LBS
7.0 g / 0.1 N
weak grip
10 mm 218 Gs
21.8 mT
0.00 kg / 0.00 LBS
0.9 g / 0.0 N
weak grip
15 mm 103 Gs
10.3 mT
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
weak grip
20 mm 58 Gs
5.8 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
weak grip
30 mm 24 Gs
2.4 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
50 mm 7 Gs
0.7 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Slippage capacity (vertical surface)
MPL 15x2x30 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.14 kg / 0.30 LBS
136.0 g / 1.3 N
1 mm Stal (~0.2) 0.03 kg / 0.07 LBS
34.0 g / 0.3 N
2 mm Stal (~0.2) 0.01 kg / 0.02 LBS
10.0 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
2.0 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: Wall mounting (shearing) - vertical pull
MPL 15x2x30 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.20 kg / 0.45 LBS
204.0 g / 2.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.14 kg / 0.30 LBS
136.0 g / 1.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.07 kg / 0.15 LBS
68.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.34 kg / 0.75 LBS
340.0 g / 3.3 N

Table 4: Steel thickness (saturation) - power losses
MPL 15x2x30 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.07 kg / 0.15 LBS
68.0 g / 0.7 N
1 mm
25%
0.17 kg / 0.37 LBS
170.0 g / 1.7 N
2 mm
50%
0.34 kg / 0.75 LBS
340.0 g / 3.3 N
3 mm
75%
0.51 kg / 1.12 LBS
510.0 g / 5.0 N
5 mm
100%
0.68 kg / 1.50 LBS
680.0 g / 6.7 N
10 mm
100%
0.68 kg / 1.50 LBS
680.0 g / 6.7 N
11 mm
100%
0.68 kg / 1.50 LBS
680.0 g / 6.7 N
12 mm
100%
0.68 kg / 1.50 LBS
680.0 g / 6.7 N

Table 5: Working in heat (stability) - power drop
MPL 15x2x30 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.68 kg / 1.50 LBS
680.0 g / 6.7 N
OK
40 °C -2.2% 0.67 kg / 1.47 LBS
665.0 g / 6.5 N
OK
60 °C -4.4% 0.65 kg / 1.43 LBS
650.1 g / 6.4 N
OK
80 °C -6.6% 0.64 kg / 1.40 LBS
635.1 g / 6.2 N
100 °C -28.8% 0.48 kg / 1.07 LBS
484.2 g / 4.7 N

Table 6: Two magnets (attraction) - field range
MPL 15x2x30 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 6.95 kg / 15.31 LBS
6 152 Gs
1.04 kg / 2.30 LBS
1042 g / 10.2 N
N/A
1 mm 3.45 kg / 7.62 LBS
8 643 Gs
0.52 kg / 1.14 LBS
518 g / 5.1 N
3.11 kg / 6.85 LBS
~0 Gs
2 mm 1.70 kg / 3.76 LBS
6 071 Gs
0.26 kg / 0.56 LBS
256 g / 2.5 N
1.53 kg / 3.38 LBS
~0 Gs
3 mm 0.93 kg / 2.05 LBS
4 482 Gs
0.14 kg / 0.31 LBS
139 g / 1.4 N
0.84 kg / 1.84 LBS
~0 Gs
5 mm 0.36 kg / 0.79 LBS
2 788 Gs
0.05 kg / 0.12 LBS
54 g / 0.5 N
0.32 kg / 0.71 LBS
~0 Gs
10 mm 0.07 kg / 0.16 LBS
1 247 Gs
0.01 kg / 0.02 LBS
11 g / 0.1 N
0.06 kg / 0.14 LBS
~0 Gs
20 mm 0.01 kg / 0.02 LBS
435 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
71 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
47 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
33 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
24 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
18 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
14 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (electronics) - precautionary measures
MPL 15x2x30 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.0 cm
Hearing aid 10 Gs (1.0 mT) 4.5 cm
Timepiece 20 Gs (2.0 mT) 3.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.5 cm
Car key 50 Gs (5.0 mT) 2.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.0 cm

Table 8: Dynamics (kinetic energy) - warning
MPL 15x2x30 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 10.13 km/h
(2.81 m/s)
0.03 J
30 mm 17.53 km/h
(4.87 m/s)
0.08 J
50 mm 22.63 km/h
(6.29 m/s)
0.13 J
100 mm 32.01 km/h
(8.89 m/s)
0.27 J

Table 9: Corrosion resistance
MPL 15x2x30 / 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 15x2x30 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 210 Mx 22.1 µWb
Pc Coefficient 1.54 High (Stable)

Table 11: Underwater work (magnet fishing)
MPL 15x2x30 / N38

Environment Effective steel pull Effect
Air (land) 0.68 kg Standard
Water (riverbed) 0.78 kg
(+0.10 kg buoyancy gain)
+14.5%
Warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Vertical hold

*Note: On a vertical surface, the magnet holds merely ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.

3. Thermal stability

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.54

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
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%
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: 020121-2026
Quick Unit Converter
Magnet pull force

Field Strength

See also products

Component MPL 15x2x30 / N38 features a flat shape and industrial pulling force, making it a perfect solution for building separators and machines. As a magnetic bar with high power (approx. 0.68 kg), this product is available immediately from our warehouse in Poland. Additionally, 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. To separate the MPL 15x2x30 / 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. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
Plate magnets MPL 15x2x30 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for workshop organization 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. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 15x2x30 / N38 model is magnetized axially (dimension 30 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 (15x2 mm), which is ideal for flat mounting. This is the most popular configuration for block magnets used in separators and holders.
The presented product is a neodymium magnet with precisely defined parameters: 15 mm (length), 2 mm (width), and 30 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 0.68 kg (force ~6.68 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose power, even over around ten years – the decrease in lifting capacity is only ~1% (theoretically),
  • They are resistant to demagnetization induced by external disturbances,
  • The use of an aesthetic coating of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnetic induction on the working part of the magnet is impressive,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • In view of the potential of free forming and customization to custom projects, magnetic components can be created in a variety of geometric configurations, which makes them more universal,
  • Key role in modern technologies – they are utilized in mass storage devices, electric drive systems, medical equipment, and modern systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
  • NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Limited ability of making nuts in the magnet and complicated shapes - recommended is a housing - mounting mechanism.
  • Health risk related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets are able to complicate diagnosis medical in case of swallowing.
  • Due to neodymium price, their price is higher than average,

Lifting parameters

Highest magnetic holding forcewhat contributes to it?

Information about lifting capacity is the result of a measurement for ideal contact conditions, including:
  • on a base made of structural steel, perfectly concentrating the magnetic field
  • with a cross-section minimum 10 mm
  • with an ideally smooth contact surface
  • under conditions of gap-free contact (surface-to-surface)
  • during detachment in a direction perpendicular to the plane
  • at temperature approx. 20 degrees Celsius

Magnet lifting force in use – key factors

Effective lifting capacity is influenced by working environment parameters, such as (from priority):
  • Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Steel type – mild steel gives the best results. Higher carbon content lower magnetic properties and lifting capacity.
  • Surface structure – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under shearing force the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.

Warnings
Hand protection

Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Cards and drives

Data protection: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

No play value

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

Magnetic interference

GPS units and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can decalibrate the internal compass in your phone.

Nickel allergy

Some people suffer from a sensitization to nickel, which is the common plating for NdFeB magnets. Prolonged contact might lead to skin redness. It is best to use safety gloves.

Permanent damage

Standard neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.

Powerful field

Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often quicker than you can react.

Protective goggles

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets leads to them shattering into shards.

Health Danger

Individuals with a pacemaker must keep an absolute distance from magnets. The magnetic field can interfere with the operation of the implant.

Do not drill into magnets

Powder generated during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Safety First! 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