FAQ
Order Status

tel: +48 22 499 98 98

Neodymiums – wide shape selection

Need reliable magnetic field? We offer complete range of various shapes and sizes. Perfect for for domestic applications, garage and industrial tasks. Browse assortment in stock.

check price list and dimensions

Magnet fishing sets (searchers)

Begin your hobby related to seabed exploration! Our specialized grips (F200, F400) provide grip certainty and immense power. Stainless steel construction and reinforced ropes will perform in rivers and lakes.

find your set

Industrial magnetic grips mounting

Proven solutions for fixing non-invasive. Threaded mounts (external or internal) guarantee instant organization of work on warehouses. They are indispensable installing lighting, detectors and ads.

check available threads

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

Dhit sp. z o.o.
0
0.00 ZŁ
  1. home
  2. neodymium cylindrical magnets
  3. rod magnet mw 12x1.5 / n38
← previous
next →
Product available Ships tomorrow

MW 12x1.5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010442

GTIN/EAN: 5906301811114

5.00

Diameter Ø

12 mm [±0,1 mm]

Height

1.5 mm [±0,1 mm]

Weight

1.27 g

Magnetization Direction

↑ axial

Load capacity

0.87 kg / 8.51 N

Magnetic Induction

150.32 mT / 1503 Gs

Coating

[NiCuNi] Nickel

technical parameters »

0.431 ZŁ with VAT / pcs + price for transport

0.350 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
0.350 ZŁ
0.431 ZŁ
price from 1800 pcs
0.329 ZŁ
0.405 ZŁ
price from 7200 pcs
0.308 ZŁ
0.379 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Need help making a decision?

Contact us by phone +48 888 99 98 98 otherwise drop us a message using contact form the contact page.
Force along with form of neodymium magnets can be estimated using our modular calculator.

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

Technical of the product - MW 12x1.5 / N38 - cylindrical magnet

Specification / characteristics - MW 12x1.5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010442
GTIN/EAN 5906301811114
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 12 mm [±0,1 mm]
Height 1.5 mm [±0,1 mm]
Weight 1.27 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.87 kg / 8.51 N
Magnetic Induction ~ ? 150.32 mT / 1503 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 12x1.5 / N38 - cylindrical 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 product - data

Presented data represent the result of a physical calculation. Values are based on models for the material Nd2Fe14B. Real-world conditions might slightly deviate from the simulation results. Use these data as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - characteristics
MW 12x1.5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1503 Gs
150.3 mT
 0.87 kg / 1.92 LBS
870.0 g / 8.5 N
 low risk
1 mm 1365 Gs
136.5 mT
 0.72 kg / 1.58 LBS
718.1 g / 7.0 N
 low risk
2 mm 1163 Gs
116.3 mT
 0.52 kg / 1.15 LBS
521.4 g / 5.1 N
 low risk
3 mm 947 Gs
94.7 mT
 0.35 kg / 0.76 LBS
345.7 g / 3.4 N
 low risk
5 mm 587 Gs
58.7 mT
 0.13 kg / 0.29 LBS
132.6 g / 1.3 N
 low risk
10 mm 180 Gs
18.0 mT
 0.01 kg / 0.03 LBS
12.5 g / 0.1 N
 low risk
15 mm 70 Gs
7.0 mT
 0.00 kg / 0.00 LBS
1.9 g / 0.0 N
 low risk
20 mm 33 Gs
3.3 mT
 0.00 kg / 0.00 LBS
0.4 g / 0.0 N
 low risk
30 mm 11 Gs
1.1 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
50 mm 3 Gs
0.3 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 low risk
Magnetic force decreases sharply with every subsequent millimeter of spacing. Note that even a very thin break (e.g., contamination, paint, dust) strongly reduces the pull force. Magnetic products work most effectively at the point of direct contact; air break kills the force. Notice how quickly the load capacity drop, when the product does not touch tightly to the steel surface. When calculating the assembly, avoid additional spacers.

Table 2: Sliding hold (vertical surface)
MW 12x1.5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.17 kg / 0.38 LBS
174.0 g / 1.7 N
1 mm Stal (~0.2) 0.14 kg / 0.32 LBS
144.0 g / 1.4 N
2 mm Stal (~0.2) 0.10 kg / 0.23 LBS
104.0 g / 1.0 N
3 mm Stal (~0.2) 0.07 kg / 0.15 LBS
70.0 g / 0.7 N
5 mm Stal (~0.2) 0.03 kg / 0.06 LBS
26.0 g / 0.3 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
2.0 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 defines the approximate force necessary to cause the sliding of the magnet vertically along a upright steel plate (considering standard friction). The holding force depends on the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 12x1.5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.26 kg / 0.58 LBS
261.0 g / 2.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.17 kg / 0.38 LBS
174.0 g / 1.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.09 kg / 0.19 LBS
87.0 g / 0.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.44 kg / 0.96 LBS
435.0 g / 4.3 N
When hanging a magnet on a upright surface (e.g., a car body), it will maintain barely about 1/5 of its nominal power. Gravitational force and a low friction coefficient influence the fact that products slide down faster than they pop off the substrate. Planning a hanger? Note that the shear force is noticeably lower than the perpendicular breakaway force. On a painted metal, the holder will slip down under a noticeably lighter weight. Using a rubber pad can significantly improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 12x1.5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.09 kg / 0.19 LBS
87.0 g / 0.9 N
1 mm
25%
 0.22 kg / 0.48 LBS
217.5 g / 2.1 N
2 mm
50%
 0.44 kg / 0.96 LBS
435.0 g / 4.3 N
3 mm
75%
 0.65 kg / 1.44 LBS
652.5 g / 6.4 N
5 mm
100%
 0.87 kg / 1.92 LBS
870.0 g / 8.5 N
10 mm
100%
 0.87 kg / 1.92 LBS
870.0 g / 8.5 N
11 mm
100%
 0.87 kg / 1.92 LBS
870.0 g / 8.5 N
12 mm
100%
 0.87 kg / 1.92 LBS
870.0 g / 8.5 N
A too thin steel cannot conduct the entire magnetic field, which squanders power of the magnet. If you install a neodymium to a weak sheet, the flux will penetrate right through and the pull force will drop sharply. To achieve 100% of this neodymium's power, you require a sufficiently solid piece of steel. The saturation phenomenon means that on thin elements (e.g., thin profiles), the holder holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal stability (stability) - power drop
MW 12x1.5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.87 kg / 1.92 LBS
870.0 g / 8.5 N
 OK
40 °C -2.2% 0.85 kg / 1.88 LBS
850.9 g / 8.3 N
 OK
60 °C -4.4% 0.83 kg / 1.83 LBS
831.7 g / 8.2 N
80 °C -6.6% 0.81 kg / 1.79 LBS
812.6 g / 8.0 N
100 °C -28.8% 0.62 kg / 1.37 LBS
619.4 g / 6.1 N
Ordinary NdFeB products lose parameters above the temperature limit. Avoid high temperatures – excessive heat can permanently demagnetize this magnet. With increasing heat, the neodymium's power temporarily decreases. Avoid using this product close to heaters higher than its working range. Ignoring the limit will lead to irreversible degradation of magnetic properties.
*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than long magnets. Warning indicator in the table signals a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 12x1.5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.57 kg / 3.47 LBS
2 770 Gs
0.24 kg / 0.52 LBS
236 g / 2.3 N
 N/A
1 mm 1.46 kg / 3.21 LBS
2 891 Gs
0.22 kg / 0.48 LBS
219 g / 2.1 N
 1.31 kg / 2.89 LBS
~0 Gs
2 mm 1.30 kg / 2.87 LBS
2 731 Gs
0.19 kg / 0.43 LBS
195 g / 1.9 N
 1.17 kg / 2.58 LBS
~0 Gs
3 mm 1.12 kg / 2.48 LBS
2 538 Gs
0.17 kg / 0.37 LBS
168 g / 1.7 N
 1.01 kg / 2.23 LBS
~0 Gs
5 mm 0.78 kg / 1.71 LBS
2 109 Gs
0.12 kg / 0.26 LBS
116 g / 1.1 N
 0.70 kg / 1.54 LBS
~0 Gs
10 mm 0.24 kg / 0.53 LBS
1 173 Gs
0.04 kg / 0.08 LBS
36 g / 0.4 N
 0.22 kg / 0.48 LBS
~0 Gs
20 mm 0.02 kg / 0.05 LBS
361 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
 0.02 kg / 0.05 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
36 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
22 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
14 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
10 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
7 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
5 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 significantly greater distance than a magnet and sheet setup. The setup of two magnets generates a stronger field and a further horizon of action. Designing a strong closure? Apply two magnets instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still impressive.
*Flux density for N-N configuration is approximately ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Important: Estimates apply to sliding force of dual matching magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Protective zones (electronics) - warnings
MW 12x1.5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.5 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Remote 50 Gs (5.0 mT) 2.0 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm
Powerful magnet radiation poses a serious hazard to electronics as well as medical implants. These neodymiums generate a field that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and insulin pumps. Also at risk are: mechanical watches, remotes, speakers, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MW 12x1.5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 26.63 km/h
(7.40 m/s)
 0.03 J
30 mm 45.72 km/h
(12.70 m/s)
 0.10 J
50 mm 59.02 km/h
(16.40 m/s)
 0.17 J
100 mm 83.47 km/h
(23.19 m/s)
 0.34 J
Neodymium magnets are delicate – a violent impact against metal risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or injury to fingers. Hold the magnet firmly during mounting so it doesn't slam with momentum against the metal. A collision at high speed almost guarantees destruction of the neodymium. Wear safety glasses when handling with powerful specimens.

Table 9: Anti-corrosion coating durability
MW 12x1.5 / 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: Construction data (Pc)
MW 12x1.5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 2 159 Mx 21.6 µWb
Pc Coefficient 0.19 Low (Flat)
Flux value emitted by the magnet pole. Essential parameter for generator designers as well as sensors. Pc value defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 12x1.5 / N38

Environment Effective steel pull Effect
Air (land) 0.87 kg Standard
Water (riverbed) 1.00 kg
(+0.13 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!
Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.
1. Vertical hold

*Caution: On a vertical wall, the magnet holds just a fraction of its max power.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Thermal stability

*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) = 0.19

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 and environmental data
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%
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: 010442-2026
Measurement Calculator
Magnet pull force
Field Strength
Input a figure in just one field to see the conversion for the other units immediately.

View more offers

MPL 10x10x4 / N38 - lamellar magnet
Product available Ships tomorrow

MPL 10x10x4 / N38 - lamellar magnet

1.538 ZŁ brutto / pcs
HH 25x7.7 [M5] / N38 - through hole magnetic holder
Product available Ships tomorrow

HH 25x7.7 [M5] / N38 - through hole magnetic holder

11.44 ZŁ brutto / pcs
UMGGW 22x6 [M4] GW / N38 - magnetic holder rubber internal thread
Product available Ships tomorrow

UMGGW 22x6 [M4] GW / N38 - magnetic holder rubber internal thread

7.38 ZŁ brutto / pcs
MW 30x5 / N38 - cylindrical magnet
Product available Ships tomorrow

MW 30x5 / N38 - cylindrical magnet

8.35 ZŁ brutto / pcs
The offered product is an extremely powerful cylindrical magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø12x1.5 mm, guarantees maximum efficiency. The MW 12x1.5 / N38 model is characterized by high dimensional repeatability and industrial build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with significant force (approx. 0.87 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 8.51 N with a weight of only 1.27 g, this cylindrical magnet is indispensable in electronics and wherever every gram matters.
Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø12x1.5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø12x1.5 mm, which, at a weight of 1.27 g, makes it an element with impressive magnetic energy density. The value of 8.51 N means that the magnet is capable of holding a weight many times exceeding its own mass of 1.27 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 1.5 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Advantages and disadvantages of rare earth magnets.

Advantages

Apart from their superior power, neodymium magnets have these key benefits:
  • They retain attractive force for around ten years – the drop is just ~1% (in theory),
  • They are extremely resistant to demagnetization induced by external magnetic fields,
  • A magnet with a smooth gold surface has an effective appearance,
  • They feature high magnetic induction at the operating surface, which increases their power,
  • Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to the potential of free forming and adaptation to custom projects, neodymium magnets can be produced in a variety of shapes and sizes, which amplifies use scope,
  • Significant place in future technologies – they find application in HDD drives, brushless drives, advanced medical instruments, also technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in compact constructions

Cons

Disadvantages of neodymium magnets:
  • They are prone to damage 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
  • 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.
  • They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing threads and complex forms in magnets, we recommend using cover - magnetic holder.
  • Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these devices can be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Holding force of 0.87 kg is a theoretical maximum value performed under the following configuration:
  • using a base made of high-permeability steel, serving as a ideal flux conductor
  • with a cross-section minimum 10 mm
  • characterized by lack of roughness
  • without any air gap between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

Please note that the application force may be lower influenced by the following factors, starting with the most relevant:
  • Distance – existence of foreign body (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
  • Base massiveness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted into the air.
  • Metal type – not every steel reacts the same. Alloy additives weaken the interaction with the magnet.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture create air cushions, reducing force.
  • Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.

Safe handling of neodymium magnets
Powerful field

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

Material brittleness

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Compass and GPS

Remember: neodymium magnets produce a field that disrupts sensitive sensors. Maintain a separation from your phone, tablet, and navigation systems.

Danger to the youngest

Neodymium magnets are not suitable for play. Swallowing multiple magnets can lead to them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.

Combustion hazard

Powder created during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.

Metal Allergy

Medical facts indicate that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands or select coated magnets.

Pinching danger

Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.

Magnetic media

Device Safety: Strong magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, timepieces).

Danger to pacemakers

Patients with a pacemaker have to maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the implant.

Heat sensitivity

Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.

Attention! More info about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98