FAQ
Order Status

e-mail: bok@dhit.pl

Strong neodymium magnets: discs and cylinders

Need strong magnetic field? Our range includes complete range of disc, cylindrical and ring magnets. Best choice for home use, workshop and industrial tasks. Browse assortment available immediately.

see full offer

Magnet fishing sets (hobbyists)

Begin your hobby related to seabed exploration! Our specialized grips (F200, F400) provide safety guarantee and huge lifting capacity. Solid, corrosion-resistant housing and strong lines are reliable in rivers and lakes.

find your water magnet

Professional threaded grips

Professional solutions for mounting without drilling. Threaded grips (M8, M10, M12) guarantee quick improvement of work on warehouses. Perfect for mounting lamps, detectors and ads.

see available threads

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

Dhit sp. z o.o.
0
0.00 ZŁ
  1. home
  2. neodymium ring magnets
  3. magnet with hole mp 8x6/3.5x3 / n38
← previous
next →
Product available Ships tomorrow

MP 8x6/3.5x3 / N38 - ring magnet

ring magnet

Catalog no 030206

GTIN/EAN: 5906301812234

5.00

Diameter

8 mm [±0,1 mm]

internal diameter Ø

6/3.5 mm [±0,1 mm]

Height

3 mm [±0,1 mm]

Weight

0.91 g

Magnetization Direction

↑ axial

Load capacity

1.37 kg / 13.48 N

Magnetic Induction

371.53 mT / 3715 Gs

Coating

[NiCuNi] Nickel

check technical data »

0.701 ZŁ with VAT / pcs + price for transport

0.570 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
0.570 ZŁ
0.701 ZŁ
price from 1100 pcs
0.536 ZŁ
0.659 ZŁ
price from 4400 pcs
0.502 ZŁ
0.617 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Not sure about your choice?

Call us now +48 22 499 98 98 alternatively get in touch by means of request form the contact page.
Weight along with shape of neodymium magnets can be reviewed with our magnetic calculator.

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

Technical parameters - MP 8x6/3.5x3 / N38 - ring magnet

Specification / characteristics - MP 8x6/3.5x3 / N38 - ring magnet

properties
properties values
Cat. no. 030206
GTIN/EAN 5906301812234
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 8 mm [±0,1 mm]
internal diameter Ø 6/3.5 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 0.91 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.37 kg / 13.48 N
Magnetic Induction ~ ? 371.53 mT / 3715 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 8x6/3.5x3 / N38 - ring 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

Engineering modeling of the magnet - report

Presented values are the result of a engineering calculation. Results rely on models for the material Nd2Fe14B. Actual parameters might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (force vs distance) - power drop
MP 8x6/3.5x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3327 Gs
332.7 mT
 1.37 kg / 3.02 LBS
1370.0 g / 13.4 N
 safe
1 mm 2612 Gs
261.2 mT
 0.84 kg / 1.86 LBS
844.4 g / 8.3 N
 safe
2 mm 1884 Gs
188.4 mT
 0.44 kg / 0.97 LBS
439.3 g / 4.3 N
 safe
3 mm 1310 Gs
131.0 mT
 0.21 kg / 0.47 LBS
212.4 g / 2.1 N
 safe
5 mm 637 Gs
63.7 mT
 0.05 kg / 0.11 LBS
50.3 g / 0.5 N
 safe
10 mm 151 Gs
15.1 mT
 0.00 kg / 0.01 LBS
2.8 g / 0.0 N
 safe
15 mm 54 Gs
5.4 mT
 0.00 kg / 0.00 LBS
0.4 g / 0.0 N
 safe
20 mm 25 Gs
2.5 mT
 0.00 kg / 0.00 LBS
0.1 g / 0.0 N
 safe
30 mm 8 Gs
0.8 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
50 mm 2 Gs
0.2 mT
 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
 safe
Grip strength drops sharply with every subsequent millimeter of distance. Note that even a microscopic distance (e.g., dirt, paint, rust) noticeably weakens the grip. Neodymiums work optimally at the point of direct contact; distance weakens the power. See how quickly the parameters fall, when the magnet does not adhere flatly to the steel surface. When planning the arrangement, eliminate redundant distances.

Table 2: Vertical capacity (wall)
MP 8x6/3.5x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.27 kg / 0.60 LBS
274.0 g / 2.7 N
1 mm Stal (~0.2) 0.17 kg / 0.37 LBS
168.0 g / 1.6 N
2 mm Stal (~0.2) 0.09 kg / 0.19 LBS
88.0 g / 0.9 N
3 mm Stal (~0.2) 0.04 kg / 0.09 LBS
42.0 g / 0.4 N
5 mm Stal (~0.2) 0.01 kg / 0.02 LBS
10.0 g / 0.1 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
This section indicates the theoretical holding capacity required to cause the downward movement of the magnet down along a upright steel wall (considering standard friction coefficient). The holding force varies with the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MP 8x6/3.5x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.41 kg / 0.91 LBS
411.0 g / 4.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.27 kg / 0.60 LBS
274.0 g / 2.7 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.14 kg / 0.30 LBS
137.0 g / 1.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.69 kg / 1.51 LBS
685.0 g / 6.7 N
When mounting a element on a upright surface (e.g., a fridge), it you can count on barely about 20%-30% of nominal attraction strength. Gravity as well as a low friction coefficient mean that holders slide down faster than they pull off. Designing a hanger? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will slip down under a much lighter cargo. Utilizing a rubberized pad can drastically improve the result.

Table 4: Steel thickness (saturation) - power losses
MP 8x6/3.5x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.14 kg / 0.30 LBS
137.0 g / 1.3 N
1 mm
25%
 0.34 kg / 0.76 LBS
342.5 g / 3.4 N
2 mm
50%
 0.69 kg / 1.51 LBS
685.0 g / 6.7 N
3 mm
75%
 1.03 kg / 2.27 LBS
1027.5 g / 10.1 N
5 mm
100%
 1.37 kg / 3.02 LBS
1370.0 g / 13.4 N
10 mm
100%
 1.37 kg / 3.02 LBS
1370.0 g / 13.4 N
11 mm
100%
 1.37 kg / 3.02 LBS
1370.0 g / 13.4 N
12 mm
100%
 1.37 kg / 3.02 LBS
1370.0 g / 13.4 N
A too thin steel is incapable of conduct the entire magnetic field, which squanders power of the holder. If you install a neodymium to a thin surface, the flux will pass right through and the pull force will drop sharply. To utilize 100% of this neodymium's power, you need a suitably thick piece of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the product shows lower pull force. We advise picking the steel dimension according to the table below.

Table 5: Working in heat (stability) - power drop
MP 8x6/3.5x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.37 kg / 3.02 LBS
1370.0 g / 13.4 N
 OK
40 °C -2.2% 1.34 kg / 2.95 LBS
1339.9 g / 13.1 N
 OK
60 °C -4.4% 1.31 kg / 2.89 LBS
1309.7 g / 12.8 N
80 °C -6.6% 1.28 kg / 2.82 LBS
1279.6 g / 12.6 N
100 °C -28.8% 0.98 kg / 2.15 LBS
975.4 g / 9.6 N
Ordinary NdFeB products change their properties parameters after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly damage this product. With every degree above norm, the magnet's power briefly drops. Refrain from using this magnet close to heaters exceeding its working range. Too high temperature will cause irreversible degradation of magnetic properties.
*Important note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Flat magnets (low permeance coefficient) risk losing magnetic properties at lower temperatures than taller cylinders. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MP 8x6/3.5x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 2.36 kg / 5.20 LBS
4 867 Gs
0.35 kg / 0.78 LBS
354 g / 3.5 N
 N/A
1 mm 1.90 kg / 4.20 LBS
5 981 Gs
0.29 kg / 0.63 LBS
286 g / 2.8 N
 1.71 kg / 3.78 LBS
~0 Gs
2 mm 1.45 kg / 3.20 LBS
5 223 Gs
0.22 kg / 0.48 LBS
218 g / 2.1 N
 1.31 kg / 2.88 LBS
~0 Gs
3 mm 1.06 kg / 2.34 LBS
4 468 Gs
0.16 kg / 0.35 LBS
159 g / 1.6 N
 0.96 kg / 2.11 LBS
~0 Gs
5 mm 0.53 kg / 1.16 LBS
3 148 Gs
0.08 kg / 0.17 LBS
79 g / 0.8 N
 0.47 kg / 1.05 LBS
~0 Gs
10 mm 0.09 kg / 0.19 LBS
1 274 Gs
0.01 kg / 0.03 LBS
13 g / 0.1 N
 0.08 kg / 0.17 LBS
~0 Gs
20 mm 0.00 kg / 0.01 LBS
301 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
27 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
16 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
10 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
7 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
5 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
4 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
 0.00 kg / 0.00 LBS
~0 Gs
Two magnetic products interact from a wider radius than a magnet and sheet combination. Such a system of magnet-to-magnet produces a massive flux and a larger range of performance. Want to build a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still large.
*Flux density for N-N configuration is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
* Figures demonstrate sliding force of dual matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - precautionary measures
MP 8x6/3.5x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 4.0 cm
Hearing aid 10 Gs (1.0 mT) 3.0 cm
Mechanical watch 20 Gs (2.0 mT) 2.5 cm
Mobile device 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) 1.0 cm
A strong magnetic field poses a serious hazard to electronics and pacemakers. These magnets generate a field that prevents correct functioning of digital equipment. Notice: the invisible magnetic field penetrates the body and plastic. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MP 8x6/3.5x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 39.18 km/h
(10.88 m/s)
 0.05 J
30 mm 67.78 km/h
(18.83 m/s)
 0.16 J
50 mm 87.50 km/h
(24.31 m/s)
 0.27 J
100 mm 123.74 km/h
(34.37 m/s)
 0.54 J
Magnetic elements are delicate – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can cause material chips or painful pinches to fingers. Always hold the magnet during mounting so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the magnet. Use safety goggles when handling with powerful specimens.

Table 9: Coating parameters (durability)
MP 8x6/3.5x3 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Electrical data (Pc)
MP 8x6/3.5x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 299 Mx 13.0 µWb
Pc Coefficient 0.46 Low (Flat)
Flux value emitted by the pole surface. Key data for generator designers as well as sensors. Pc value defines the working geometry.

Table 11: Submerged application
MP 8x6/3.5x3 / N38

Environment Effective steel pull Effect
Air (land) 1.37 kg Standard
Water (riverbed) 1.57 kg
(+0.20 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!
Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.
1. Sliding resistance

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

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.46

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%
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: 030206-2026
Quick Unit Converter
Magnet pull force
Magnetic Field
Just complete a single box, to let the converter fill in everything else automatically.

Other offers

BM 650x180x70 [4x M8] - magnetic beam
Product available Ships tomorrow

BM 650x180x70 [4x M8] - magnetic beam

6131.43 ZŁ brutto / pcs
SM 32x350 [2xM8] / N42 - magnetic separator
Product available Ships tomorrow

SM 32x350 [2xM8] / N42 - magnetic separator

1045.50 ZŁ brutto / pcs
MT 50x1.5x50000 - magnetic tape
Product available Ships tomorrow

MT 50x1.5x50000 - magnetic tape

430.50 ZŁ brutto / pcs
MPL 40x15x5 / N38 - lamellar magnet
Product available Ships tomorrow

MPL 40x15x5 / N38 - lamellar magnet

7.63 ZŁ brutto / pcs
It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.
This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because excessive force will cause the ring to crack. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. 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 easily scratched 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 6/3.5 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Always check that the screw head is not larger than the outer diameter of the magnet (8 mm), so it doesn't protrude beyond the outline.
It is a magnetic ring with a diameter of 8 mm and thickness 3 mm. The pulling force of this model is an impressive 1.37 kg, which translates to 13.48 N in newtons. The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 6/3.5 mm.
The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros and cons of neodymium magnets.

Advantages

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They do not lose power, even over around 10 years – the drop in power is only ~1% (theoretically),
  • They possess excellent resistance to magnetism drop as a result of external magnetic sources,
  • A magnet with a metallic nickel surface has an effective appearance,
  • They are known for high magnetic induction at the operating surface, which affects their effectiveness,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Thanks to the potential of flexible shaping and adaptation to individualized needs, magnetic components can be produced in a wide range of forms and dimensions, which increases their versatility,
  • Key role in advanced technology sectors – they are used in computer drives, motor assemblies, medical devices, also industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Limitations

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also increases their durability
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • We recommend casing - magnetic holder, due to difficulties in creating nuts inside the magnet and complex forms.
  • Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • With mass production the cost of neodymium magnets is a challenge,

Lifting parameters

Maximum holding power of the magnet – what affects it?

The declared magnet strength concerns the maximum value, measured under optimal environment, specifically:
  • using a base made of high-permeability steel, serving as a magnetic yoke
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • with an ideally smooth touching surface
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction vertical to the plane
  • in temp. approx. 20°C

Lifting capacity in real conditions – factors

In practice, the actual lifting capacity depends on several key aspects, presented from most significant:
  • Distance – existence of any layer (rust, tape, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Steel type – low-carbon steel gives the best results. Higher carbon content lower magnetic permeability and lifting capacity.
  • Smoothness – full contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the load capacity.

H&S for magnets
Fire warning

Powder generated during cutting of magnets is flammable. Avoid drilling into magnets unless you are an expert.

Permanent damage

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Life threat

For implant holders: Strong magnetic fields disrupt electronics. Keep at least 30 cm distance or request help to handle the magnets.

Impact on smartphones

Navigation devices and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the internal compass in your phone.

Metal Allergy

A percentage of the population experience a contact allergy to Ni, which is the common plating for neodymium magnets. Prolonged contact might lead to an allergic reaction. We strongly advise wear safety gloves.

Eye protection

Watch out for shards. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Pinching danger

Pinching hazard: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.

Handling rules

Handle magnets with awareness. Their immense force can surprise even experienced users. Stay alert and respect their power.

No play value

Product intended for adults. Small elements can be swallowed, causing serious injuries. Store out of reach of children and animals.

Magnetic media

Intense magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Safety First! More info about risks in the article: Safety of working with magnets.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98