← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MPL 15x2x30 / N38 - lamellar magnet

lamellar magnet

Catalog no 020121

GTIN/EAN: 5906301811275

5.00
Load capacity 0.68 kg / 6.68 N Magnetic Induction 614.34 mT / 6143 Gs
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
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

check properties »

3.86 zł net / pcs

4.75 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
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

Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

Technical of the product - 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 310 °C
Curie Temperature TF 590 °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 magnet - report

The following information constitute the outcome of a mathematical simulation. Results are based on algorithms for the class Nd2Fe14B. Actual conditions might slightly differ. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (force vs distance) - characteristics
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
 safe
1 mm 3036 Gs
303.6 mT
 0.17 kg / 0.37 LBS
166.8 g / 1.6 N
 safe
2 mm 1736 Gs
173.6 mT
 0.05 kg / 0.12 LBS
54.5 g / 0.5 N
 safe
3 mm 1150 Gs
115.0 mT
 0.02 kg / 0.05 LBS
23.9 g / 0.2 N
 safe
5 mm 623 Gs
62.3 mT
 0.01 kg / 0.02 LBS
7.0 g / 0.1 N
 safe
10 mm 218 Gs
21.8 mT
 0.00 kg / 0.00 LBS
0.9 g / 0.0 N
 safe
15 mm 103 Gs
10.3 mT
 0.00 kg / 0.00 LBS
0.2 g / 0.0 N
 safe
20 mm 58 Gs
5.8 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 safe
30 mm 24 Gs
2.4 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
50 mm 7 Gs
0.7 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Grip strength drops drastically with every mm of gap. Note that even a microscopic distance (e.g., contamination, paint, rust) noticeably weakens the grip. Magnets work strongest at the point of direct contact; air break drastically cuts the force. See how flashily the parameters plummet, when the magnet does not adhere directly to the steel surface. When planning the mounting, eliminate additional spacers.

Table 2: Sliding load (wall)
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
The following data indicates the approximate force necessary to cause the sliding of the magnet down against a vertical steel plate (considering typical friction). This parameter varies with the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
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
When hanging a element on a vertical wall (e.g., a board), it will only hold just approx. 1/5 of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that magnets move down easier than they detach. Planning a vertical fastening? Consider that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a noticeably lighter weight. Application of an anti-slip layer can effectively increase the grip.

Table 4: Material efficiency (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
A too thin steel is incapable of conduct the entire magnetic field, which wastes potential of the magnet. Should you mount a strong magnet to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To achieve full efficiency of this magnet's potential, you need a suitably thick backing of steel. The material oversaturation causes that on delicate walls (e.g., appliance housings), the magnet works worse. We suggest choosing the steel thickness based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
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
Ordinary NdFeB products lose parameters past the thermal threshold. Watch out for overheating – high temperature can permanently destroy this magnet. With every degree above norm, the neodymium's power temporarily drops. Do not use this magnet in hot environments higher than its working range. Exceeding the critical threshold will lead to destruction of magnetism.
*Engineering note: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (low Pc) risk losing magnetic properties sooner than long magnets. The danger warning in the table points to permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MPL 15x2x30 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (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
Two magnets interact from a much further distance than a magnet and steel combination. The setup of magnet-to-magnet generates a stronger field and a further horizon of operation. Planning to create a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the collision energy is extreme. The repulsion force is slightly lower than the connection force, but still impressive.
*Flux density between like poles drops to ~0 Gs in the exact middle of the gap (due to field cancellation).
Note: Estimates demonstrate friction force of dual identical neodymium magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - 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
Mobile device 40 Gs (4.0 mT) 2.5 cm
Remote 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
A strong magnetic field is a large risk to electronic devices as well as medical implants. These NdFeB products generate a field that prevents correct functioning of sensitive medical devices. Remember: the invisible magnetic field acts through matter and housings. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MPL 15x2x30 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 4.52 km/h
(1.26 m/s)
 0.01 J
30 mm 4.54 km/h
(1.26 m/s)
 0.01 J
50 mm 4.54 km/h
(1.26 m/s)
 0.01 J
100 mm 4.54 km/h
(1.26 m/s)
 0.01 J
Neodymium magnets are prone to chipping – a collision with steel causes immediate chipping. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can trigger coating fragments or injury to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the steel surface. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when playing with powerful specimens.

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)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MPL 15x2x30 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 210 Mx 22.1 µWb
Pc Coefficient 1.54 High (Stable)
Flux value passing through the magnet pole. Essential parameter when building generators and motors. The Pc coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
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%
Corrosion warning: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
The magnetic field penetrates through water without any losses. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

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

2. Steel thickness impact

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

3. Temperature resistance

*For standard magnets, 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

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

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: 020121-2026
Magnet Unit Converter

Pulling force

Magnetic Induction

Input a figure in just one field to see the conversion in all other units right away.

Other offers

MW 7x1.5 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 7x1.5 / N38 - cylindrical magnet

0.369 zł brutto / pcs
UMP 94x40 [3xM10] GW F550 Silver Black / N52 - search holder
Product available Ships today (order by 14:00)

UMP 94x40 [3xM10] GW F550 Silver Black / N52 - search holder

350.00 zł brutto / pcs
RM R6 GOLF - 13000 Gs / N52 - magnetic distributor
Product available Ships today (order by 14:00)

RM R6 GOLF - 13000 Gs / N52 - magnetic distributor

150.00 zł brutto / pcs
MP 20x8x5 / N38 - ring magnet
Product available Ships today (order by 14:00)

MP 20x8x5 / N38 - ring magnet

3.80 zł brutto / pcs
This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 15x2x30 mm and a weight of 6.75 g, guarantees the highest quality connection. This magnetic block with a force of 6.68 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
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. 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. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 15x2x30 / 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. Customers often choose this model for hanging tools on strips and for advanced DIY and modeling projects, where precision and power count.
For mounting flat magnets MPL 15x2x30 / N38, it is best to use strong epoxy glues (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 roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. In practice, this means that this magnet has the greatest attraction force on its main planes (15x2 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: 15 mm (length), 2 mm (width), and 30 mm (thickness). It is a magnetic block with dimensions 15x2x30 mm and a self-weight of 6.75 g, ready to work at temperatures up to 80°C. The protective [NiCuNi] coating secures the magnet against corrosion.

Pros as well as cons of rare earth magnets.

Strengths

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They have constant strength, and over around ten years their performance decreases symbolically – ~1% (in testing),
  • They are extremely resistant to demagnetization induced by external disturbances,
  • By applying a reflective coating of silver, the element acquires an aesthetic look,
  • Magnetic induction on the surface of the magnet turns out to be very high,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of custom machining and modifying to defined applications,
  • Key role in modern technologies – they find application in hard drives, motor assemblies, advanced medical instruments, as well as multitasking production systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complicated shapes in magnets, we recommend using casing - magnetic holder.
  • Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small components of these devices can disrupt the diagnostic process medical when they are in the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Holding force characteristics

Best holding force of the magnet in ideal parameters – what contributes to it?

Magnet power is the result of a measurement for the most favorable conditions, assuming:
  • on a base made of structural steel, optimally conducting the magnetic field
  • whose transverse dimension is min. 10 mm
  • with an ideally smooth contact surface
  • with zero gap (no coatings)
  • for force acting at a right angle (pull-off, not shear)
  • at room temperature

Determinants of practical lifting force of a magnet

Holding efficiency is affected by specific conditions, such as (from most important):
  • Clearance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Plate material – low-carbon steel attracts best. Alloy admixtures decrease magnetic properties and lifting capacity.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the load capacity.

Safe handling of NdFeB magnets
Precision electronics

Remember: neodymium magnets produce a field that confuses precision electronics. Maintain a separation from your mobile, tablet, and GPS.

Serious injuries

Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Powerful field

Use magnets with awareness. Their huge power can shock even professionals. Plan your moves and do not underestimate their force.

Magnet fragility

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Electronic hazard

Avoid bringing magnets close to a purse, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Machining danger

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

Allergy Warning

Studies show that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from direct skin contact or choose versions in plastic housing.

Medical interference

Individuals with a pacemaker should maintain an absolute distance from magnets. The magnetic field can stop the operation of the life-saving device.

Danger to the youngest

Only for adults. Tiny parts can be swallowed, causing serious injuries. Store away from kids and pets.

Permanent damage

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.

Attention! Learn more about hazards in the article: Magnet Safety Guide.