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

MP 16x12x2 / N38 - ring magnet

ring magnet

Catalog no 030183

GTIN/EAN: 5906301812005

5.00
Load capacity 0.68 kg / 6.62 N Magnetic Induction 150.33 mT / 1503 Gs
Diameter
16 mm [±0,1 mm]
internal diameter Ø
12 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
1.32 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

technical parameters »

1.060 zł net / pcs

1.304 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
1.060 zł
1.304 zł
price from 600 pcs
0.996 zł
1.226 zł
price from 2400 pcs
0.933 zł
1.147 zł

Frequently asked questions

What is the hole in a ring magnet for?
For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.
What is the polarisation?
Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.
What sizes are available?
Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
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!

Physical properties - MP 16x12x2 / N38 - ring magnet

Specification / characteristics - MP 16x12x2 / N38 - ring magnet

properties
properties values
Cat. no. 030183
GTIN/EAN 5906301812005
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 16 mm [±0,1 mm]
internal diameter Ø 12 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 1.32 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.68 kg / 6.62 N
Magnetic Induction ~ ? 150.33 mT / 1503 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 16x12x2 / N38 - ring magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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

Engineering simulation of the assembly - report

These information are the direct effect of a physical analysis. Results are based on models for the class Nd2Fe14B. Real-world conditions might slightly differ. Treat these data as a reference point during assembly planning.

Table 1: Static pull force (force vs gap) - characteristics
MP 16x12x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6011 Gs
601.1 mT
 0.68 kg / 1.50 pounds
680.0 g / 6.7 N
 safe
1 mm 5259 Gs
525.9 mT
 0.52 kg / 1.15 pounds
520.7 g / 5.1 N
 safe
2 mm 4534 Gs
453.4 mT
 0.39 kg / 0.85 pounds
387.0 g / 3.8 N
 safe
3 mm 3870 Gs
387.0 mT
 0.28 kg / 0.62 pounds
281.9 g / 2.8 N
 safe
5 mm 2776 Gs
277.6 mT
 0.15 kg / 0.32 pounds
145.1 g / 1.4 N
 safe
10 mm 1251 Gs
125.1 mT
 0.03 kg / 0.06 pounds
29.4 g / 0.3 N
 safe
15 mm 643 Gs
64.3 mT
 0.01 kg / 0.02 pounds
7.8 g / 0.1 N
 safe
20 mm 372 Gs
37.2 mT
 0.00 kg / 0.01 pounds
2.6 g / 0.0 N
 safe
30 mm 159 Gs
15.9 mT
 0.00 kg / 0.00 pounds
0.5 g / 0.0 N
 safe
50 mm 49 Gs
4.9 mT
 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
 safe
Magnetic force drops sharply per each millimeter of gap. Note that even a microscopic distance (e.g., dirt, paint, dust) significantly weakens the grip. Magnets work strongest during direct contact; air break weakens the force. Observe how rapidly the parameters fall, when the product does not touch directly to the metal substrate. When planning the arrangement, discard unnecessary gaps.

Table 2: Slippage load (vertical surface)
MP 16x12x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.14 kg / 0.30 pounds
136.0 g / 1.3 N
1 mm Stal (~0.2) 0.10 kg / 0.23 pounds
104.0 g / 1.0 N
2 mm Stal (~0.2) 0.08 kg / 0.17 pounds
78.0 g / 0.8 N
3 mm Stal (~0.2) 0.06 kg / 0.12 pounds
56.0 g / 0.5 N
5 mm Stal (~0.2) 0.03 kg / 0.07 pounds
30.0 g / 0.3 N
10 mm Stal (~0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 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
The following data presents the approximate holding capacity needed to initiate the sliding of the magnet vertically on a upright metal surface (considering standard friction coefficient). This parameter is a function of the separation distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - vertical pull
MP 16x12x2 / 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 pounds
204.0 g / 2.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.14 kg / 0.30 pounds
136.0 g / 1.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.07 kg / 0.15 pounds
68.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.34 kg / 0.75 pounds
340.0 g / 3.3 N
When mounting a holder on a upright surface (e.g., a fridge), it will only hold barely about 1/5 of its nominal power. Gravity as well as a weak degree of grip cause that magnets slip faster than they pop off the substrate. Designing a vertical fastening? Consider that the shear force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the magnet will slide down under a noticeably lighter weight. Utilizing a rubberized layer can significantly raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 16x12x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.07 kg / 0.15 pounds
68.0 g / 0.7 N
1 mm
25%
 0.17 kg / 0.37 pounds
170.0 g / 1.7 N
2 mm
50%
 0.34 kg / 0.75 pounds
340.0 g / 3.3 N
3 mm
75%
 0.51 kg / 1.12 pounds
510.0 g / 5.0 N
5 mm
100%
 0.68 kg / 1.50 pounds
680.0 g / 6.7 N
10 mm
100%
 0.68 kg / 1.50 pounds
680.0 g / 6.7 N
11 mm
100%
 0.68 kg / 1.50 pounds
680.0 g / 6.7 N
12 mm
100%
 0.68 kg / 1.50 pounds
680.0 g / 6.7 N
A thin sheet is not enough to focus the full magnetic flux, which squanders power of the holder. If you attach a powerful product to a weak sheet, the magnetism will pass right through and the holding will be smaller. To squeeze 100% of this neodymium's power, you require a sufficiently solid element of metal. The saturation effect means that on sheet metal structures (e.g., appliance housings), the magnet holds weaker. We advise picking the steel thickness based on the following data.

Table 5: Thermal stability (material behavior) - thermal limit
MP 16x12x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.68 kg / 1.50 pounds
680.0 g / 6.7 N
 OK
40 °C -2.2% 0.67 kg / 1.47 pounds
665.0 g / 6.5 N
 OK
60 °C -4.4% 0.65 kg / 1.43 pounds
650.1 g / 6.4 N
 OK
80 °C -6.6% 0.64 kg / 1.40 pounds
635.1 g / 6.2 N
100 °C -28.8% 0.48 kg / 1.07 pounds
484.2 g / 4.7 N
Standard neodymium magnets irreversibly lose strength above the temperature limit. Watch out for overheating – excessive heat can irreversibly destroy this product. As the temperature rises, the neodymium's capacity temporarily lowers. Refrain from using this product close to heaters exceeding its working range. Exceeding the critical threshold will result in destruction of magnetism.
*Engineering note: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) may lose charge permanently at lower temperatures compared to rod magnets. Warning indicator in the table points to permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MP 16x12x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 37.47 kg / 82.60 pounds
6 145 Gs
5.62 kg / 12.39 pounds
5620 g / 55.1 N
 N/A
1 mm 32.95 kg / 72.65 pounds
11 273 Gs
4.94 kg / 10.90 pounds
4943 g / 48.5 N
 29.66 kg / 65.38 pounds
~0 Gs
2 mm 28.69 kg / 63.25 pounds
10 519 Gs
4.30 kg / 9.49 pounds
4303 g / 42.2 N
 25.82 kg / 56.92 pounds
~0 Gs
3 mm 24.81 kg / 54.69 pounds
9 781 Gs
3.72 kg / 8.20 pounds
3721 g / 36.5 N
 22.33 kg / 49.22 pounds
~0 Gs
5 mm 18.24 kg / 40.20 pounds
8 386 Gs
2.74 kg / 6.03 pounds
2735 g / 26.8 N
 16.41 kg / 36.18 pounds
~0 Gs
10 mm 7.99 kg / 17.62 pounds
5 552 Gs
1.20 kg / 2.64 pounds
1199 g / 11.8 N
 7.19 kg / 15.86 pounds
~0 Gs
20 mm 1.62 kg / 3.58 pounds
2 501 Gs
0.24 kg / 0.54 pounds
243 g / 2.4 N
 1.46 kg / 3.22 pounds
~0 Gs
50 mm 0.06 kg / 0.13 pounds
471 Gs
0.01 kg / 0.02 pounds
9 g / 0.1 N
 0.05 kg / 0.11 pounds
~0 Gs
60 mm 0.03 kg / 0.06 pounds
318 Gs
0.00 kg / 0.01 pounds
4 g / 0.0 N
 0.02 kg / 0.05 pounds
~0 Gs
70 mm 0.01 kg / 0.03 pounds
225 Gs
0.00 kg / 0.00 pounds
2 g / 0.0 N
 0.01 kg / 0.03 pounds
~0 Gs
80 mm 0.01 kg / 0.02 pounds
166 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.01 pounds
126 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.01 pounds
98 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two strong neodymiums interact from a much further distance than a neodymium and metal combination. The setup of two magnets generates a stronger field and a further horizon of operation. Planning to create a strong closure? Apply two magnets instead of one magnet and a striker plate. Remember that when bringing together two magnets, the collision energy is extreme. The levitation is marginally weaker than the connection force, but still impressive.
*Flux density between like poles drops to ~0 Gs at the midpoint of the gap (caused by magnetic field nullification).
Attention: Results show sliding force of two identical magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MP 16x12x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 12.5 cm
Hearing aid 10 Gs (1.0 mT) 9.5 cm
Mechanical watch 20 Gs (2.0 mT) 7.5 cm
Phone / Smartphone 40 Gs (4.0 mT) 5.5 cm
Car key 50 Gs (5.0 mT) 5.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
Extremely neodym field is a serious hazard to IT equipment as well as pacemakers. These magnets generate a field that destroys function of digital equipment. Notice: the unseen radiation acts through matter and plastic. Special caution must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MP 16x12x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 20.36 km/h
(5.66 m/s)
 0.02 J
30 mm 20.90 km/h
(5.80 m/s)
 0.02 J
50 mm 20.91 km/h
(5.81 m/s)
 0.02 J
100 mm 20.91 km/h
(5.81 m/s)
 0.02 J
Neodymium magnets are delicate – a violent impact against metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can destroy the magnet or painful pinches to fingers. Always hold the magnet during mounting so it doesn't slam with momentum against the metal. A collision at high speed means shattering of the neodymium. Use safety goggles when playing with powerful specimens.

Table 9: Surface protection spec
MP 16x12x2 / 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 following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MP 16x12x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 11 219 Mx 112.2 µWb
Pc Coefficient 1.22 High (Stable)
Flux value emitted by the pole surface. Key data when building generators as well as sensors. The Pc coefficient determines the magnet's operating point.

Table 11: Submerged application
MP 16x12x2 / N38

Environment Effective steel pull Effect
Air (land) 0.68 kg Standard
Water (riverbed) 0.78 kg
(+0.10 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet holds merely ~20% of its max power.

2. Steel thickness impact

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

3. Power loss vs temp

*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) = 1.22

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.

Technical specification and ecology

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%

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: 030183-2026
Measurement Calculator

Magnet pull force

Magnetic Field

Input a value in one of the inputs, to see the rest change on the fly.

Check out more offers

MPL 3x3x2 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 3x3x2 / N38 - lamellar magnet

0.1722 zł brutto / pcs
MPL 10x10x10 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 10x10x10 / N38 - lamellar magnet

5.29 zł brutto / pcs
UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread
Product available Ships today (order by 14:00)

UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread

24.97 zł brutto / pcs
MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 40x10x5x2[7/3.5] / N38 - lamellar magnet

9.93 zł brutto / pcs
The ring-shaped magnet MP 16x12x2 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 0.68 kg works great as a door latch, speaker holder, or mounting element in devices.
This is a crucial issue when working with model MP 16x12x2 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. The flat screw head should evenly press the magnet. Remember: cracking during assembly results from material properties, not a product defect.
Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.
A screw or bolt with a thread diameter smaller than 12 mm fits this model. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Aesthetic mounting requires selecting the appropriate head size.
The presented product is a ring magnet with dimensions Ø16 mm (outer diameter) and height 2 mm. The key parameter here is the holding force amounting to approximately 0.68 kg (force ~6.62 N). The mounting hole diameter is precisely 12 mm.
The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Strengths as well as weaknesses of rare earth magnets.

Strengths

Besides their immense field intensity, neodymium magnets offer the following advantages:
  • They retain attractive force for almost 10 years – the drop is just ~1% (in theory),
  • Magnets very well resist against demagnetization caused by ambient magnetic noise,
  • A magnet with a smooth silver surface looks better,
  • Neodymium magnets deliver maximum magnetic induction on a small surface, which allows for strong attraction,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of exact creating as well as adapting to precise applications,
  • Fundamental importance in modern industrial fields – they are utilized in magnetic memories, electric motors, medical devices, also technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Problematic aspects of neodymium magnets: tips and applications.
  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • 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 as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing nuts and complex forms in magnets, we propose using casing - magnetic mount.
  • Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
  • Due to neodymium price, their price is relatively high,

Lifting parameters

Maximum magnetic pulling force – what affects it?

The declared magnet strength represents the maximum value, measured under laboratory conditions, specifically:
  • with the use of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • with a thickness minimum 10 mm
  • with an polished contact surface
  • under conditions of no distance (surface-to-surface)
  • during detachment in a direction vertical to the plane
  • at temperature room level

Determinants of practical lifting force of a magnet

Effective lifting capacity impacted by specific conditions, such as (from most important):
  • Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
  • Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
  • Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.

Safety rules for work with neodymium magnets
Conscious usage

Be careful. Neodymium magnets act from a distance and snap with huge force, often quicker than you can react.

Eye protection

Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.

Choking Hazard

Always store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are very dangerous.

Phone sensors

Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Metal Allergy

Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, immediately stop handling magnets and wear gloves.

Cards and drives

Do not bring magnets close to a purse, laptop, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Dust is flammable

Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Maximum temperature

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Bone fractures

Large magnets can smash fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Health Danger

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Warning! Want to know more? Check our post: Why are neodymium magnets dangerous?