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
Load capacity
0.20 kg / 1.95 N
Magnetic Induction
598.96 mT / 5990 Gs
Coating
[NiCuNi] Nickel
0.295 ZŁ with VAT / pcs + price for transport
0.240 ZŁ net + 23% VAT / pcs
bulk discounts:
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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 | 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 |
Physical analysis of the assembly - report
The following data represent the result of a engineering analysis. Values were calculated on algorithms for the class Nd2Fe14B. Actual performance may differ from theoretical values. Treat these calculations as a supplementary guide for designers.
Table 1: Static force (pull vs gap) - characteristics
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: Sliding capacity (vertical surface)
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: Vertical assembly (sliding) - vertical pull
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 (saturation) - 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 (material behavior) - power drop
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) - forces in the system
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: Protective zones (electronics) - 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 |
| Timepiece | 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: Impact energy (kinetic energy) - warning
MW 3x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.21 km/h
(7.00 m/s)
|
0.01 J | |
| 30 mm |
43.67 km/h
(12.13 m/s)
|
0.02 J | |
| 50 mm |
56.38 km/h
(15.66 m/s)
|
0.04 J | |
| 100 mm |
79.73 km/h
(22.15 m/s)
|
0.08 J |
Table 9: Surface protection spec
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: Underwater work (magnet fishing)
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. Wall mount (shear)
*Note: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.
2. Efficiency vs thickness
*Thin steel (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Thermal stability
*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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Pros and cons of Nd2Fe14B magnets.
Strengths
- They do not lose power, even over nearly ten years – the decrease in power is only ~1% (based on measurements),
- They are noted for resistance to demagnetization induced by presence of other magnetic fields,
- Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an modern appearance,
- They are known for high magnetic induction at the operating surface, which affects their effectiveness,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of individual machining and adjusting to individual applications,
- Universal use in high-tech industry – they are used in data components, drive modules, diagnostic systems, and multitasking production systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Cons
- To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We recommend casing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated shapes.
- Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what affects it?
- using a plate made of mild steel, serving as a magnetic yoke
- possessing a massiveness of minimum 10 mm to avoid saturation
- with a plane free of scratches
- with zero gap (without coatings)
- during pulling in a direction vertical to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
What influences lifting capacity in practice
- Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Direction of force – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Steel thickness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be escaped into the air.
- Material type – the best choice is pure iron steel. Stainless steels may have worse magnetic properties.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
- Thermal environment – heating the magnet results in weakening of force. Check the thermal limit for a given model.
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate decreases the load capacity.
Precautions when working with neodymium magnets
Finger safety
Danger of trauma: The attraction force is so great that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
Do not overheat magnets
Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.
Electronic hazard
Data protection: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
ICD Warning
Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Keep away from children
Always keep magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are life-threatening.
Metal Allergy
Some people experience a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Prolonged contact might lead to skin redness. We strongly advise wear protective gloves.
Magnets are brittle
Watch out for shards. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.
Handling guide
Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
Combustion hazard
Powder produced during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.
GPS and phone interference
GPS units and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
