MW 6x3 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010093
GTIN/EAN: 5906301810926
- 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
0.310 zł net / pcs
0.381 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.
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Technical specification - MW 6x3 / N38 - cylindrical magnet
Specification / characteristics - MW 6x3 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010093 |
| GTIN/EAN | 5906301810926 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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
| 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 |
|
0.11 kg / 0.25 pounds
115.0 g / 1.1 N
|
| 1 mm |
|
0.29 kg / 0.63 pounds
287.5 g / 2.8 N
|
| 2 mm |
|
0.58 kg / 1.27 pounds
575.0 g / 5.6 N
|
| 3 mm |
|
0.86 kg / 1.90 pounds
862.5 g / 8.5 N
|
| 5 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
| 10 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
| 11 mm |
|
1.15 kg / 2.54 pounds
1150.0 g / 11.3 N
|
| 12 mm |
|
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% |
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.
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 |
Other offers
Pros as well as cons of rare earth magnets.
Advantages
- 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
- 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?
- 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
- 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.
