Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MW 6x3 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010093

GTIN/EAN: 5906301810926

5.00
Load capacity 1.15 kg / 11.23 N Magnetic Induction 437.58 mT / 4376 Gs
Diameter Ø
6 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
0.64 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

0.310net / pcs

0.381 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?

Quantity
Net
Gross
price from 1 pcs
0.310 zł
0.381 zł
price from 1872 pcs
0.279 zł
0.343 zł
price from 3744 pcs
0.273 zł
0.336 zł

Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

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.

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 specification - MW 6x3 / N38 - cylindrical magnet

Specification / characteristics - MW 6x3 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010093
GTIN/EAN 5906301810926
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 6 mm [±0,1 mm]
Height 3 mm [±0,1 mm]
Weight 0.64 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.15 kg / 11.23 N
Magnetic Induction ~ ? 437.58 mT / 4376 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 6x3 / N38 - cylindrical 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

Physical simulation of the assembly - technical parameters

Presented data represent the direct effect of a engineering analysis. Results rely on models for the class Nd2Fe14B. Actual conditions may deviate from the simulation results. Please consider these data as a preliminary roadmap when designing systems.

Table 1: Static force (force vs distance) - power drop
MW 6x3 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4371 Gs
437.1 mT
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
safe
1 mm 2999 Gs
299.9 mT
0.54 kg / 1.19 pounds
541.6 g / 5.3 N
safe
2 mm 1877 Gs
187.7 mT
0.21 kg / 0.47 pounds
212.2 g / 2.1 N
safe
3 mm 1161 Gs
116.1 mT
0.08 kg / 0.18 pounds
81.2 g / 0.8 N
safe
5 mm 489 Gs
48.9 mT
0.01 kg / 0.03 pounds
14.4 g / 0.1 N
safe
10 mm 103 Gs
10.3 mT
0.00 kg / 0.00 pounds
0.6 g / 0.0 N
safe
15 mm 36 Gs
3.6 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
safe
20 mm 17 Gs
1.7 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
30 mm 5 Gs
0.5 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
safe

Table 2: Sliding load (wall)
MW 6x3 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.23 kg / 0.51 pounds
230.0 g / 2.3 N
1 mm Stal (~0.2) 0.11 kg / 0.24 pounds
108.0 g / 1.1 N
2 mm Stal (~0.2) 0.04 kg / 0.09 pounds
42.0 g / 0.4 N
3 mm Stal (~0.2) 0.02 kg / 0.04 pounds
16.0 g / 0.2 N
5 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 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

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 6x3 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.35 kg / 0.76 pounds
345.0 g / 3.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.23 kg / 0.51 pounds
230.0 g / 2.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.11 kg / 0.25 pounds
115.0 g / 1.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.58 kg / 1.27 pounds
575.0 g / 5.6 N

Table 4: Steel thickness (saturation) - power losses
MW 6x3 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.11 kg / 0.25 pounds
115.0 g / 1.1 N
1 mm
25%
0.29 kg / 0.63 pounds
287.5 g / 2.8 N
2 mm
50%
0.58 kg / 1.27 pounds
575.0 g / 5.6 N
3 mm
75%
0.86 kg / 1.90 pounds
862.5 g / 8.5 N
5 mm
100%
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
10 mm
100%
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
11 mm
100%
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
12 mm
100%
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N

Table 5: Thermal resistance (material behavior) - power drop
MW 6x3 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
OK
40 °C -2.2% 1.12 kg / 2.48 pounds
1124.7 g / 11.0 N
OK
60 °C -4.4% 1.10 kg / 2.42 pounds
1099.4 g / 10.8 N
80 °C -6.6% 1.07 kg / 2.37 pounds
1074.1 g / 10.5 N
100 °C -28.8% 0.82 kg / 1.81 pounds
818.8 g / 8.0 N

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 6x3 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 3.33 kg / 7.34 pounds
5 527 Gs
0.50 kg / 1.10 pounds
499 g / 4.9 N
N/A
1 mm 2.37 kg / 5.23 pounds
7 376 Gs
0.36 kg / 0.78 pounds
356 g / 3.5 N
2.13 kg / 4.70 pounds
~0 Gs
2 mm 1.57 kg / 3.46 pounds
5 999 Gs
0.24 kg / 0.52 pounds
235 g / 2.3 N
1.41 kg / 3.11 pounds
~0 Gs
3 mm 0.99 kg / 2.19 pounds
4 772 Gs
0.15 kg / 0.33 pounds
149 g / 1.5 N
0.89 kg / 1.97 pounds
~0 Gs
5 mm 0.38 kg / 0.83 pounds
2 948 Gs
0.06 kg / 0.13 pounds
57 g / 0.6 N
0.34 kg / 0.75 pounds
~0 Gs
10 mm 0.04 kg / 0.09 pounds
978 Gs
0.01 kg / 0.01 pounds
6 g / 0.1 N
0.04 kg / 0.08 pounds
~0 Gs
20 mm 0.00 kg / 0.00 pounds
205 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
18 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
11 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
7 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
5 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
3 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
2 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Protective zones (implants) - precautionary measures
MW 6x3 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 3.5 cm
Hearing aid 10 Gs (1.0 mT) 2.5 cm
Timepiece 20 Gs (2.0 mT) 2.0 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Car key 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 1.0 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Dynamics (cracking risk) - collision effects
MW 6x3 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.71 km/h
(6.59 m/s)
0.01 J
30 mm 23.72 km/h
(6.59 m/s)
0.01 J
50 mm 23.72 km/h
(6.59 m/s)
0.01 J
100 mm 23.72 km/h
(6.59 m/s)
0.01 J

Table 9: Coating parameters (durability)
MW 6x3 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)

Table 10: Electrical data (Flux)
MW 6x3 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 256 Mx 12.6 µWb
Pc Coefficient 0.59 Low (Flat)

Table 11: Underwater work (magnet fishing)
MW 6x3 / N38

Environment Effective steel pull Effect
Air (land) 1.15 kg Standard
Water (riverbed) 1.32 kg
(+0.17 kg buoyancy gain)
+14.5%
Warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

1. Shear force

*Note: On a vertical wall, the magnet retains just approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

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

3. Temperature resistance

*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) = 0.59

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%

Sustainability

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010093-2026
Magnet Unit Converter

Pulling force


Field Strength

Other offers

The offered product is an extremely powerful cylinder magnet, made from advanced NdFeB material, which, at dimensions of Ø6x3 mm, guarantees the highest energy density. The MW 6x3 / N38 model features high dimensional repeatability and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 1.15 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 11.23 N with a weight of only 0.64 g, this rod 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 professional component. To ensure long-term durability 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 strong enough for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø6x3), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 6 mm and height 3 mm. The value of 11.23 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.64 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 6 mm. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of rare earth magnets.

Advantages

Besides their durability, neodymium magnets are valued for these benefits:
  • They have stable power, and over more than ten years their performance decreases symbolically – ~1% (according to theory),
  • They retain their magnetic properties even under external field action,
  • The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to look better,
  • The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
  • Due to the ability of precise molding and customization to custom solutions, neodymium magnets can be produced in a variety of shapes and sizes, which makes them more universal,
  • Versatile presence in innovative solutions – they are utilized in HDD drives, electric motors, medical equipment, also other advanced devices.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Drawbacks and weaknesses of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest a housing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Pull force analysis

Maximum holding power of the magnet – what contributes to it?

The force parameter is a result of laboratory testing performed under the following configuration:
  • on a base made of structural steel, perfectly concentrating the magnetic field
  • whose transverse dimension equals approx. 10 mm
  • characterized by smoothness
  • under conditions of gap-free contact (metal-to-metal)
  • during detachment in a direction vertical to the plane
  • in temp. approx. 20°C

Magnet lifting force in use – key factors

During everyday use, the actual holding force results from many variables, listed from the most important:
  • Clearance – the presence of foreign body (paint, dirt, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Plate material – mild steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
  • Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Lifting capacity was assessed with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Warnings
Combustion hazard

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease working with magnets and use protective gear.

Conscious usage

Exercise caution. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can react.

Risk of cracking

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Keep away from electronics

Remember: rare earth magnets produce a field that interferes with sensitive sensors. Keep a separation from your mobile, device, and GPS.

Bone fractures

Large magnets can crush fingers instantly. Never put your hand betwixt two strong magnets.

Heat warning

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

Danger to the youngest

These products are not toys. Eating multiple magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.

Magnetic media

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

Pacemakers

Warning for patients: Strong magnetic fields disrupt electronics. Keep at least 30 cm distance or request help to work with the magnets.

Caution! More info about risks in the article: Safety of working with magnets.