Neodymiums – complete shape selection

Looking for massive power in small size? Our range includes wide selection of disc, cylindrical and ring magnets. Best choice for domestic applications, garage and model making. Check our offer available immediately.

see full offer

Magnet fishing: solid F200/F400 sets

Discover your passion with treasure salvaging! Our double-handle grips (F200, F400) provide safety guarantee and huge lifting capacity. Solid, corrosion-resistant housing and strong lines are reliable in challenging water conditions.

choose searching equipment

Reliable threaded grips

Proven solutions for fixing non-invasive. Threaded grips (M8, M10, M12) provide quick improvement of work on production halls. They are indispensable mounting lighting, detectors and banners.

see available threads

🚀 Express processing: orders by 14:00 shipped within 24h!

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

MPL 35x7x3 / N38 - lamellar magnet

lamellar magnet

Catalog no 020145

GTIN/EAN: 5906301811510

5.00

length

35 mm [±0,1 mm]

Width

7 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

5.51 g

Magnetization Direction

↑ axial

Load capacity

6.21 kg / 60.89 N

Magnetic Induction

285.96 mT / 2860 Gs

Coating

[NiCuNi] Nickel

2.99 with VAT / pcs + price for transport

2.43 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
2.43 ZŁ
2.99 ZŁ
price from 520 pcs
2.19 ZŁ
2.69 ZŁ
price from 2080 pcs
2.14 ZŁ
2.63 ZŁ
Not sure which magnet to buy?

Call us +48 22 499 98 98 alternatively contact us by means of inquiry form the contact form page.
Specifications along with appearance of magnets can be checked using our magnetic mass calculator.

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

Physical properties - MPL 35x7x3 / N38 - lamellar magnet

Specification / characteristics - MPL 35x7x3 / N38 - lamellar magnet

properties
properties values
Cat. no. 020145
GTIN/EAN 5906301811510
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 35 mm [±0,1 mm]
Width 7 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 5.51 g
Magnetization Direction ↑ axial
Load capacity ~ ? 6.21 kg / 60.89 N
Magnetic Induction ~ ? 285.96 mT / 2860 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 35x7x3 / 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 modeling of the magnet - report

The following information are the direct effect of a physical calculation. Results were calculated on models for the class Nd2Fe14B. Operational performance might slightly differ from theoretical values. Please consider these calculations as a reference point when designing systems.

Table 1: Static force (force vs gap) - power drop
MPL 35x7x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2858 Gs
285.8 mT
6.21 kg / 13.69 lbs
6210.0 g / 60.9 N
warning
1 mm 2328 Gs
232.8 mT
4.12 kg / 9.09 lbs
4121.1 g / 40.4 N
warning
2 mm 1801 Gs
180.1 mT
2.47 kg / 5.44 lbs
2467.6 g / 24.2 N
warning
3 mm 1376 Gs
137.6 mT
1.44 kg / 3.18 lbs
1440.7 g / 14.1 N
low risk
5 mm 832 Gs
83.2 mT
0.53 kg / 1.16 lbs
526.9 g / 5.2 N
low risk
10 mm 318 Gs
31.8 mT
0.08 kg / 0.17 lbs
77.1 g / 0.8 N
low risk
15 mm 158 Gs
15.8 mT
0.02 kg / 0.04 lbs
18.9 g / 0.2 N
low risk
20 mm 89 Gs
8.9 mT
0.01 kg / 0.01 lbs
6.0 g / 0.1 N
low risk
30 mm 35 Gs
3.5 mT
0.00 kg / 0.00 lbs
1.0 g / 0.0 N
low risk
50 mm 10 Gs
1.0 mT
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
low risk

Table 2: Slippage hold (vertical surface)
MPL 35x7x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.24 kg / 2.74 lbs
1242.0 g / 12.2 N
1 mm Stal (~0.2) 0.82 kg / 1.82 lbs
824.0 g / 8.1 N
2 mm Stal (~0.2) 0.49 kg / 1.09 lbs
494.0 g / 4.8 N
3 mm Stal (~0.2) 0.29 kg / 0.63 lbs
288.0 g / 2.8 N
5 mm Stal (~0.2) 0.11 kg / 0.23 lbs
106.0 g / 1.0 N
10 mm Stal (~0.2) 0.02 kg / 0.04 lbs
16.0 g / 0.2 N
15 mm Stal (~0.2) 0.00 kg / 0.01 lbs
4.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 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 (sliding) - behavior on slippery surfaces
MPL 35x7x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
1.86 kg / 4.11 lbs
1863.0 g / 18.3 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.24 kg / 2.74 lbs
1242.0 g / 12.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.62 kg / 1.37 lbs
621.0 g / 6.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
3.11 kg / 6.85 lbs
3105.0 g / 30.5 N

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 35x7x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.62 kg / 1.37 lbs
621.0 g / 6.1 N
1 mm
25%
1.55 kg / 3.42 lbs
1552.5 g / 15.2 N
2 mm
50%
3.11 kg / 6.85 lbs
3105.0 g / 30.5 N
3 mm
75%
4.66 kg / 10.27 lbs
4657.5 g / 45.7 N
5 mm
100%
6.21 kg / 13.69 lbs
6210.0 g / 60.9 N
10 mm
100%
6.21 kg / 13.69 lbs
6210.0 g / 60.9 N
11 mm
100%
6.21 kg / 13.69 lbs
6210.0 g / 60.9 N
12 mm
100%
6.21 kg / 13.69 lbs
6210.0 g / 60.9 N

Table 5: Working in heat (stability) - resistance threshold
MPL 35x7x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 6.21 kg / 13.69 lbs
6210.0 g / 60.9 N
OK
40 °C -2.2% 6.07 kg / 13.39 lbs
6073.4 g / 59.6 N
OK
60 °C -4.4% 5.94 kg / 13.09 lbs
5936.8 g / 58.2 N
80 °C -6.6% 5.80 kg / 12.79 lbs
5800.1 g / 56.9 N
100 °C -28.8% 4.42 kg / 9.75 lbs
4421.5 g / 43.4 N

Table 6: Two magnets (attraction) - field range
MPL 35x7x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 12.34 kg / 27.19 lbs
4 231 Gs
1.85 kg / 4.08 lbs
1850 g / 18.2 N
N/A
1 mm 10.25 kg / 22.59 lbs
5 209 Gs
1.54 kg / 3.39 lbs
1537 g / 15.1 N
9.22 kg / 20.33 lbs
~0 Gs
2 mm 8.19 kg / 18.05 lbs
4 656 Gs
1.23 kg / 2.71 lbs
1228 g / 12.0 N
7.37 kg / 16.24 lbs
~0 Gs
3 mm 6.38 kg / 14.07 lbs
4 110 Gs
0.96 kg / 2.11 lbs
957 g / 9.4 N
5.74 kg / 12.66 lbs
~0 Gs
5 mm 3.74 kg / 8.25 lbs
3 149 Gs
0.56 kg / 1.24 lbs
562 g / 5.5 N
3.37 kg / 7.43 lbs
~0 Gs
10 mm 1.05 kg / 2.31 lbs
1 665 Gs
0.16 kg / 0.35 lbs
157 g / 1.5 N
0.94 kg / 2.08 lbs
~0 Gs
20 mm 0.15 kg / 0.34 lbs
637 Gs
0.02 kg / 0.05 lbs
23 g / 0.2 N
0.14 kg / 0.30 lbs
~0 Gs
50 mm 0.00 kg / 0.01 lbs
109 Gs
0.00 kg / 0.00 lbs
1 g / 0.0 N
0.00 kg / 0.00 lbs
~0 Gs
60 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
70 mm 0.00 kg / 0.00 lbs
48 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
34 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
25 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
19 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 35x7x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 6.5 cm
Hearing aid 10 Gs (1.0 mT) 5.0 cm
Timepiece 20 Gs (2.0 mT) 4.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 3.0 cm
Car key 50 Gs (5.0 mT) 3.0 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 35x7x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 34.12 km/h
(9.48 m/s)
0.25 J
30 mm 58.65 km/h
(16.29 m/s)
0.73 J
50 mm 75.71 km/h
(21.03 m/s)
1.22 J
100 mm 107.07 km/h
(29.74 m/s)
2.44 J

Table 9: Anti-corrosion coating durability
MPL 35x7x3 / 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 35x7x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 851 Mx 58.5 µWb
Pc Coefficient 0.25 Low (Flat)

Table 11: Hydrostatics and buoyancy
MPL 35x7x3 / N38

Environment Effective steel pull Effect
Air (land) 6.21 kg Standard
Water (riverbed) 7.11 kg
(+0.90 kg buoyancy gain)
+14.5%
Rust risk: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.
1. Sliding resistance

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

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) severely reduces the holding force.

3. Temperature resistance

*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) = 0.25

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
Chemical composition
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: 020145-2026
Measurement Calculator
Force (pull)

Field Strength

Other deals

This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 35x7x3 mm and a weight of 5.51 g, guarantees the highest quality connection. This magnetic block with a force of 60.89 N is ready for shipment in 24h, allowing for rapid realization of your project. Furthermore, its Ni-Cu-Ni coating secures 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 35x7x3 / 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.
Plate magnets MPL 35x7x3 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. 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 35x7x3 / N38, it is best to use two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Remember to clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 35x7x3 / N38 model is magnetized axially (dimension 3 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 (35x7 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: 35 mm (length), 7 mm (width), and 3 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 6.21 kg (force ~60.89 N), which, with such a flat shape, proves the high grade of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros and cons of Nd2Fe14B magnets.

Advantages

Besides their tremendous magnetic power, neodymium magnets offer the following advantages:
  • They retain magnetic properties for nearly 10 years – the drop is just ~1% (in theory),
  • They retain their magnetic properties even under close interference source,
  • Thanks to the elegant finish, the coating of nickel, gold-plated, or silver gives an visually attractive appearance,
  • They feature high magnetic induction at the operating surface, which improves attraction properties,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
  • In view of the potential of flexible forming and adaptation to individualized needs, neodymium magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
  • Huge importance in electronics industry – they are commonly used in HDD drives, drive modules, precision medical tools, and multitasking production systems.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
  • Limited possibility of creating threads in the magnet and complex forms - preferred is casing - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum magnetic pulling forcewhat affects it?

Breakaway force was defined for ideal contact conditions, taking into account:
  • on a block made of mild steel, perfectly concentrating the magnetic field
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • with a plane free of scratches
  • without any insulating layer between the magnet and steel
  • during detachment in a direction perpendicular to the mounting surface
  • at room temperature

Practical aspects of lifting capacity – factors

Please note that the working load may be lower subject to the following factors, in order of importance:
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Material composition – not every steel attracts identically. Alloy additives weaken the interaction with the magnet.
  • Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.

Safety rules for work with neodymium magnets
Power loss in heat

Do not overheat. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Electronic hazard

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Precision electronics

Remember: neodymium magnets produce a field that disrupts precision electronics. Keep a separation from your mobile, device, and GPS.

Safe operation

Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Dust is flammable

Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Nickel coating and allergies

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease working with magnets and use protective gear.

ICD Warning

For implant holders: Powerful magnets affect medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Crushing risk

Mind your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Swallowing risk

These products are not suitable for play. Eating a few magnets may result in them attracting across intestines, which constitutes a critical condition and requires urgent medical intervention.

Shattering risk

Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them breaking into shards.

Safety First! Learn more about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98