MW 3x6 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010065
GTIN/EAN: 5906301810643
- Diameter Ø
- 3 mm [±0,1 mm]
- Height
- 6 mm [±0,1 mm]
- Weight
- 0.32 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.240 zł net / pcs
0.295 zł with VAT (23% VAT) / pcs
bulk discounts:
Need more?Frequently asked questions
What is the maximum working temperature of a disc magnet?
What is the difference between N38, N42 and N52?
What is the dimensional tolerance?
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.
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 details - MW 3x6 / N38 - cylindrical magnet
Specification / characteristics - MW 3x6 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010065 |
| GTIN/EAN | 5906301810643 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 3 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 0.32 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.20 kg / 1.95 N |
| Magnetic Induction ~ ? | 598.96 mT / 5990 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| 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
| 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 |
Technical analysis of the assembly - report
These information represent the outcome of a mathematical analysis. Values rely on algorithms for the class Nd2Fe14B. Real-world conditions may differ. Use these calculations as a preliminary roadmap during assembly planning.
Table 1: Static pull force (pull vs distance) - interaction chart
MW 3x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5974 Gs
597.4 mT
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
weak grip |
| 1 mm |
2623 Gs
262.3 mT
|
0.04 kg / 0.09 LBS
38.6 g / 0.4 N
|
weak grip |
| 2 mm |
1134 Gs
113.4 mT
|
0.01 kg / 0.02 LBS
7.2 g / 0.1 N
|
weak grip |
| 3 mm |
570 Gs
57.0 mT
|
0.00 kg / 0.00 LBS
1.8 g / 0.0 N
|
weak grip |
| 5 mm |
205 Gs
20.5 mT
|
0.00 kg / 0.00 LBS
0.2 g / 0.0 N
|
weak grip |
| 10 mm |
42 Gs
4.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 15 mm |
15 Gs
1.5 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
7 Gs
0.7 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
Table 2: Slippage force (wall)
MW 3x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.04 kg / 0.09 LBS
40.0 g / 0.4 N
|
| 1 mm | Stal (~0.2) |
0.01 kg / 0.02 LBS
8.0 g / 0.1 N
|
| 2 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
|
| 3 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
0.0 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: Wall mounting (shearing) - behavior on slippery surfaces
MW 3x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.06 kg / 0.13 LBS
60.0 g / 0.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.04 kg / 0.09 LBS
40.0 g / 0.4 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.10 kg / 0.22 LBS
100.0 g / 1.0 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 3x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.02 kg / 0.04 LBS
20.0 g / 0.2 N
|
| 1 mm |
|
0.05 kg / 0.11 LBS
50.0 g / 0.5 N
|
| 2 mm |
|
0.10 kg / 0.22 LBS
100.0 g / 1.0 N
|
| 3 mm |
|
0.15 kg / 0.33 LBS
150.0 g / 1.5 N
|
| 5 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
| 10 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
| 11 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
| 12 mm |
|
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
Table 5: Thermal resistance (stability) - resistance threshold
MW 3x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.20 kg / 0.44 LBS
200.0 g / 2.0 N
|
OK |
| 40 °C | -2.2% |
0.20 kg / 0.43 LBS
195.6 g / 1.9 N
|
OK |
| 60 °C | -4.4% |
0.19 kg / 0.42 LBS
191.2 g / 1.9 N
|
OK |
| 80 °C | -6.6% |
0.19 kg / 0.41 LBS
186.8 g / 1.8 N
|
|
| 100 °C | -28.8% |
0.14 kg / 0.31 LBS
142.4 g / 1.4 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 3x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
1.56 kg / 3.43 LBS
6 111 Gs
|
0.23 kg / 0.51 LBS
233 g / 2.3 N
|
N/A |
| 1 mm |
0.73 kg / 1.60 LBS
8 161 Gs
|
0.11 kg / 0.24 LBS
109 g / 1.1 N
|
0.65 kg / 1.44 LBS
~0 Gs
|
| 2 mm |
0.30 kg / 0.66 LBS
5 246 Gs
|
0.04 kg / 0.10 LBS
45 g / 0.4 N
|
0.27 kg / 0.60 LBS
~0 Gs
|
| 3 mm |
0.13 kg / 0.28 LBS
3 391 Gs
|
0.02 kg / 0.04 LBS
19 g / 0.2 N
|
0.11 kg / 0.25 LBS
~0 Gs
|
| 5 mm |
0.03 kg / 0.06 LBS
1 578 Gs
|
0.00 kg / 0.01 LBS
4 g / 0.0 N
|
0.02 kg / 0.05 LBS
~0 Gs
|
| 10 mm |
0.00 kg / 0.00 LBS
409 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 LBS
83 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 50 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
|
| 60 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
|
| 70 mm |
0.00 kg / 0.00 LBS
3 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
2 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
2 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
1 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Safety (HSE) (implants) - precautionary measures
MW 3x6 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 1.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 1.5 cm |
| Car key | 50 Gs (5.0 mT) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Dynamics (cracking risk) - warning
MW 3x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
10.03 km/h
(2.79 m/s)
|
0.00 J | |
| 30 mm |
10.03 km/h
(2.79 m/s)
|
0.00 J | |
| 50 mm |
10.03 km/h
(2.79 m/s)
|
0.00 J | |
| 100 mm |
10.03 km/h
(2.79 m/s)
|
0.00 J |
Table 9: Corrosion resistance
MW 3x6 / 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 3x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 470 Mx | 4.7 µWb |
| Pc Coefficient | 1.21 | High (Stable) |
Table 11: Hydrostatics and buoyancy
MW 3x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.20 kg | Standard |
| Water (riverbed) |
0.23 kg
(+0.03 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical wall, the magnet holds only approx. 20-30% of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) significantly weakens the holding force.
3. Heat tolerance
*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) = 1.21
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.
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 |
Check out also offers
Advantages as well as disadvantages of rare earth magnets.
Strengths
- Their magnetic field remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
- They feature excellent resistance to magnetism drop due to external fields,
- A magnet with a shiny silver surface has better aesthetics,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- In view of the ability of accurate shaping and adaptation to individualized requirements, neodymium magnets can be created in a wide range of geometric configurations, which makes them more universal,
- Huge importance in modern industrial fields – they are used in hard drives, electric drive systems, advanced medical instruments, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices
Weaknesses
- To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- We suggest casing - magnetic holder, due to difficulties in realizing threads inside the magnet and complex shapes.
- Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to complicate diagnosis medical when they are in the body.
- With large orders the cost of neodymium magnets is economically unviable,
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a block made of mild steel, effectively closing the magnetic flux
- possessing a thickness of minimum 10 mm to ensure full flux closure
- characterized by lack of roughness
- without the slightest air gap between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- in neutral thermal conditions
Practical lifting capacity: influencing factors
- Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Direction of force – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Plate material – mild steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
- Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
- Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate reduces the holding force.
Warnings
Keep away from electronics
Be aware: neodymium magnets produce a field that confuses precision electronics. Keep a safe distance from your mobile, device, and navigation systems.
Respect the power
Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
Eye protection
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Skin irritation risks
Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.
Magnetic media
Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).
Serious injuries
Mind your fingers. Two large magnets will join instantly with a force of massive weight, destroying everything in their path. Be careful!
Permanent damage
Do not overheat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).
Warning for heart patients
Individuals with a heart stimulator should keep an safe separation from magnets. The magnetism can stop the operation of the implant.
Do not give to children
Always store magnets out of reach of children. Choking hazard is high, and the consequences of magnets clamping inside the body are tragic.
Dust is flammable
Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.
