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MW 6x6 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010094

GTIN/EAN: 5906301810933

5.00

Diameter Ø

6 mm [±0,1 mm]

Height

6 mm [±0,1 mm]

Weight

1.27 g

Magnetization Direction

↑ axial

Load capacity

1.14 kg / 11.18 N

Magnetic Induction

553.38 mT / 5534 Gs

Coating

[NiCuNi] Nickel

0.677 with VAT / pcs + price for transport

0.550 ZŁ net + 23% VAT / pcs

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Technical - MW 6x6 / N38 - cylindrical magnet

Specification / characteristics - MW 6x6 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010094
GTIN/EAN 5906301810933
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 6 mm [±0,1 mm]
Weight 1.27 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.14 kg / 11.18 N
Magnetic Induction ~ ? 553.38 mT / 5534 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 6x6 / 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

Engineering simulation of the assembly - technical parameters

The following data constitute the result of a engineering simulation. Results were calculated on algorithms for the class Nd2Fe14B. Operational parameters may differ. Use these calculations as a reference point for designers.

Table 1: Static force (pull vs distance) - interaction chart
MW 6x6 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5527 Gs
552.7 mT
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
low risk
1 mm 3738 Gs
373.8 mT
0.52 kg / 1.15 LBS
521.5 g / 5.1 N
low risk
2 mm 2366 Gs
236.6 mT
0.21 kg / 0.46 LBS
209.0 g / 2.0 N
low risk
3 mm 1498 Gs
149.8 mT
0.08 kg / 0.18 LBS
83.7 g / 0.8 N
low risk
5 mm 665 Gs
66.5 mT
0.02 kg / 0.04 LBS
16.5 g / 0.2 N
low risk
10 mm 155 Gs
15.5 mT
0.00 kg / 0.00 LBS
0.9 g / 0.0 N
low risk
15 mm 58 Gs
5.8 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
low risk
20 mm 28 Gs
2.8 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
30 mm 9 Gs
0.9 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk
50 mm 2 Gs
0.2 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
low risk

Table 2: Vertical hold (wall)
MW 6x6 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.23 kg / 0.50 LBS
228.0 g / 2.2 N
1 mm Stal (~0.2) 0.10 kg / 0.23 LBS
104.0 g / 1.0 N
2 mm Stal (~0.2) 0.04 kg / 0.09 LBS
42.0 g / 0.4 N
3 mm Stal (~0.2) 0.02 kg / 0.04 LBS
16.0 g / 0.2 N
5 mm Stal (~0.2) 0.00 kg / 0.01 LBS
4.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
MW 6x6 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.34 kg / 0.75 LBS
342.0 g / 3.4 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.23 kg / 0.50 LBS
228.0 g / 2.2 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.11 kg / 0.25 LBS
114.0 g / 1.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.57 kg / 1.26 LBS
570.0 g / 5.6 N

Table 4: Material efficiency (substrate influence) - power losses
MW 6x6 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.11 kg / 0.25 LBS
114.0 g / 1.1 N
1 mm
25%
0.29 kg / 0.63 LBS
285.0 g / 2.8 N
2 mm
50%
0.57 kg / 1.26 LBS
570.0 g / 5.6 N
3 mm
75%
0.86 kg / 1.88 LBS
855.0 g / 8.4 N
5 mm
100%
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
10 mm
100%
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
11 mm
100%
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
12 mm
100%
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N

Table 5: Working in heat (material behavior) - resistance threshold
MW 6x6 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
OK
40 °C -2.2% 1.11 kg / 2.46 LBS
1114.9 g / 10.9 N
OK
60 °C -4.4% 1.09 kg / 2.40 LBS
1089.8 g / 10.7 N
OK
80 °C -6.6% 1.06 kg / 2.35 LBS
1064.8 g / 10.4 N
100 °C -28.8% 0.81 kg / 1.79 LBS
811.7 g / 8.0 N

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 6x6 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 5.32 kg / 11.74 LBS
5 995 Gs
0.80 kg / 1.76 LBS
799 g / 7.8 N
N/A
1 mm 3.70 kg / 8.17 LBS
9 220 Gs
0.56 kg / 1.23 LBS
556 g / 5.5 N
3.33 kg / 7.35 LBS
~0 Gs
2 mm 2.44 kg / 5.37 LBS
7 476 Gs
0.37 kg / 0.81 LBS
365 g / 3.6 N
2.19 kg / 4.83 LBS
~0 Gs
3 mm 1.55 kg / 3.42 LBS
5 968 Gs
0.23 kg / 0.51 LBS
233 g / 2.3 N
1.40 kg / 3.08 LBS
~0 Gs
5 mm 0.61 kg / 1.35 LBS
3 755 Gs
0.09 kg / 0.20 LBS
92 g / 0.9 N
0.55 kg / 1.22 LBS
~0 Gs
10 mm 0.08 kg / 0.17 LBS
1 330 Gs
0.01 kg / 0.03 LBS
12 g / 0.1 N
0.07 kg / 0.15 LBS
~0 Gs
20 mm 0.00 kg / 0.01 LBS
311 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
31 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
19 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
12 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
8 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
6 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

Table 7: Hazards (implants) - precautionary measures
MW 6x6 / 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
Phone / Smartphone 40 Gs (4.0 mT) 2.0 cm
Car key 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

Table 8: Impact energy (cracking risk) - collision effects
MW 6x6 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 30.23 km/h
(8.40 m/s)
0.04 J
30 mm 52.34 km/h
(14.54 m/s)
0.13 J
50 mm 67.56 km/h
(18.77 m/s)
0.22 J
100 mm 95.55 km/h
(26.54 m/s)
0.45 J

Table 9: Anti-corrosion coating durability
MW 6x6 / 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 (Pc)
MW 6x6 / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 613 Mx 16.1 µWb
Pc Coefficient 0.89 High (Stable)

Table 11: Underwater work (magnet fishing)
MW 6x6 / N38

Environment Effective steel pull Effect
Air (land) 1.14 kg Standard
Water (riverbed) 1.31 kg
(+0.17 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!
1. Shear force

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

2. Plate thickness effect

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

3. Temperature resistance

*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) = 0.89

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.

Engineering data and GPSR
Material specification
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Ecology and recycling (GPSR)
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010094-2026
Measurement Calculator
Magnet pull force

Field Strength

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The presented product is an incredibly powerful rod magnet, composed of durable NdFeB material, which, with dimensions of Ø6x6 mm, guarantees maximum efficiency. The MW 6x6 / N38 component boasts an accuracy of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 1.14 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 11.18 N with a weight of only 1.27 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 6.1 mm) using epoxy glues. To ensure long-term durability in industry, 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 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø6x6), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
This model is characterized by dimensions Ø6x6 mm, which, at a weight of 1.27 g, makes it an element with high magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 1.14 kg (force ~11.18 N), which, with such compact dimensions, proves the high power of the NdFeB material. 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 6 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is standard 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 through the diameter if your project requires it.

Strengths as well as weaknesses of neodymium magnets.

Advantages

Apart from their strong magnetism, neodymium magnets have these key benefits:
  • They do not lose magnetism, even after approximately ten years – the drop in power is only ~1% (theoretically),
  • They are resistant to demagnetization induced by external field influence,
  • By covering with a decorative layer of silver, the element has an professional look,
  • Neodymium magnets achieve maximum magnetic induction on a small surface, which allows for strong attraction,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
  • Thanks to modularity in constructing and the ability to modify to individual projects,
  • Fundamental importance in modern technologies – they are used in computer drives, motor assemblies, diagnostic systems, and technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Limitations

What to avoid - cons of neodymium magnets and ways of using them
  • At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • 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 protecting against moisture
  • Limited possibility of creating nuts in the magnet and complicated forms - recommended is cover - mounting mechanism.
  • Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Additionally, small elements of these products can complicate diagnosis medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Information about lifting capacity was determined for ideal contact conditions, including:
  • using a plate made of mild steel, acting as a magnetic yoke
  • with a cross-section no less than 10 mm
  • with a plane cleaned and smooth
  • without the slightest air gap between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • at room temperature

Lifting capacity in practice – influencing factors

Holding efficiency is influenced by specific conditions, mainly (from most important):
  • Distance (betwixt the magnet and the metal), since even a very small clearance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • 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.
  • Metal type – not every steel reacts the same. Alloy additives worsen the attraction effect.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Thermal conditions – neodymium magnets 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 checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Warnings
Fire warning

Fire hazard: Rare earth powder is highly flammable. Do not process magnets in home conditions as this may cause fire.

Safe operation

Handle magnets consciously. Their immense force can surprise even professionals. Plan your moves and do not underestimate their force.

Medical interference

Patients with a ICD should keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.

Avoid contact if allergic

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease handling magnets and use protective gear.

Electronic hazard

Data protection: Strong magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Phone sensors

Be aware: rare earth magnets produce a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and GPS.

Magnets are brittle

Despite metallic appearance, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Adults only

These products are not toys. Eating multiple magnets may result in them attracting across intestines, which constitutes a direct threat to life and requires immediate surgery.

Physical harm

Big blocks can break fingers in a fraction of a second. Do not put your hand between two attracting surfaces.

Operating temperature

Monitor thermal conditions. Heating the magnet to high heat will ruin its magnetic structure and pulling force.

Danger! 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