MW 6x1 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010091
GTIN/EAN: 5906301810902
Diameter Ø
6 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
0.21 g
Magnetization Direction
↑ axial
Load capacity
0.35 kg / 3.41 N
Magnetic Induction
195.87 mT / 1959 Gs
Coating
[NiCuNi] Nickel
0.221 ZŁ with VAT / pcs + price for transport
0.1800 ZŁ net + 23% VAT / pcs
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Technical - MW 6x1 / N38 - cylindrical magnet
Specification / characteristics - MW 6x1 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010091 |
| GTIN/EAN | 5906301810902 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.21 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.35 kg / 3.41 N |
| Magnetic Induction ~ ? | 195.87 mT / 1959 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 |
Technical analysis of the product - report
Presented data constitute the outcome of a mathematical analysis. Values are based on models for the class Nd2Fe14B. Operational parameters might slightly differ from theoretical values. Treat these data as a preliminary roadmap when designing systems.
Table 1: Static force (pull vs distance) - characteristics
MW 6x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1958 Gs
195.8 mT
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
low risk |
| 1 mm |
1479 Gs
147.9 mT
|
0.20 kg / 0.44 pounds
199.7 g / 2.0 N
|
low risk |
| 2 mm |
945 Gs
94.5 mT
|
0.08 kg / 0.18 pounds
81.6 g / 0.8 N
|
low risk |
| 3 mm |
576 Gs
57.6 mT
|
0.03 kg / 0.07 pounds
30.3 g / 0.3 N
|
low risk |
| 5 mm |
229 Gs
22.9 mT
|
0.00 kg / 0.01 pounds
4.8 g / 0.0 N
|
low risk |
| 10 mm |
43 Gs
4.3 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
low risk |
| 15 mm |
14 Gs
1.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 20 mm |
6 Gs
0.6 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Sliding load (wall)
MW 6x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 0.09 pounds
40.0 g / 0.4 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 pounds
16.0 g / 0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.01 pounds
6.0 g / 0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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: Wall mounting (sliding) - vertical pull
MW 6x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.11 kg / 0.23 pounds
105.0 g / 1.0 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.03 kg / 0.08 pounds
35.0 g / 0.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.18 kg / 0.39 pounds
175.0 g / 1.7 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 6x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.03 kg / 0.08 pounds
35.0 g / 0.3 N
|
| 1 mm |
|
0.09 kg / 0.19 pounds
87.5 g / 0.9 N
|
| 2 mm |
|
0.18 kg / 0.39 pounds
175.0 g / 1.7 N
|
| 3 mm |
|
0.26 kg / 0.58 pounds
262.5 g / 2.6 N
|
| 5 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 10 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 11 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 12 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
Table 5: Thermal stability (stability) - power drop
MW 6x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
OK |
| 40 °C | -2.2% |
0.34 kg / 0.75 pounds
342.3 g / 3.4 N
|
OK |
| 60 °C | -4.4% |
0.33 kg / 0.74 pounds
334.6 g / 3.3 N
|
|
| 80 °C | -6.6% |
0.33 kg / 0.72 pounds
326.9 g / 3.2 N
|
|
| 100 °C | -28.8% |
0.25 kg / 0.55 pounds
249.2 g / 2.4 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 6x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.67 kg / 1.47 pounds
3 430 Gs
|
0.10 kg / 0.22 pounds
100 g / 1.0 N
|
N/A |
| 1 mm |
0.54 kg / 1.18 pounds
3 507 Gs
|
0.08 kg / 0.18 pounds
80 g / 0.8 N
|
0.48 kg / 1.06 pounds
~0 Gs
|
| 2 mm |
0.38 kg / 0.84 pounds
2 957 Gs
|
0.06 kg / 0.13 pounds
57 g / 0.6 N
|
0.34 kg / 0.76 pounds
~0 Gs
|
| 3 mm |
0.25 kg / 0.55 pounds
2 393 Gs
|
0.04 kg / 0.08 pounds
37 g / 0.4 N
|
0.22 kg / 0.50 pounds
~0 Gs
|
| 5 mm |
0.10 kg / 0.21 pounds
1 476 Gs
|
0.01 kg / 0.03 pounds
14 g / 0.1 N
|
0.09 kg / 0.19 pounds
~0 Gs
|
| 10 mm |
0.01 kg / 0.02 pounds
458 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
86 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
7 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
4 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
2 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
2 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
1 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
1 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Hazards (electronics) - warnings
MW 6x1 / 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 |
| Remote | 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 6x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
41.18 km/h
(11.44 m/s)
|
0.01 J | |
| 30 mm |
71.31 km/h
(19.81 m/s)
|
0.04 J | |
| 50 mm |
92.06 km/h
(25.57 m/s)
|
0.07 J | |
| 100 mm |
130.20 km/h
(36.17 m/s)
|
0.14 J |
Table 9: Surface protection spec
MW 6x1 / 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 6x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 666 Mx | 6.7 µWb |
| Pc Coefficient | 0.25 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 6x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.35 kg | Standard |
| Water (riverbed) |
0.40 kg
(+0.05 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Warning: On a vertical surface, the magnet holds only ~20% of its perpendicular strength.
2. Steel thickness impact
*Thin metal sheet (e.g. computer case) severely reduces the holding force.
3. Temperature resistance
*For standard magnets, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.25
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 |
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Pros and cons of rare earth magnets.
Strengths
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
- They are noted for resistance to demagnetization induced by external field influence,
- In other words, due to the glossy finish of nickel, the element gains a professional look,
- Magnetic induction on the working part of the magnet is impressive,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
- Considering the ability of flexible shaping and customization to specialized requirements, NdFeB magnets can be manufactured in a broad palette of geometric configurations, which amplifies use scope,
- Huge importance in advanced technology sectors – they are used in HDD drives, brushless drives, precision medical tools, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in compact constructions
Weaknesses
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets suffer a drop in strength. 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Limited possibility of creating threads in the magnet and complicated shapes - preferred is cover - magnet mounting.
- Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these magnets can be problematic in diagnostics medical in case of swallowing.
- Due to expensive raw materials, their price exceeds standard values,
Holding force characteristics
Best holding force of the magnet in ideal parameters – what it depends on?
- using a base made of mild steel, acting as a circuit closing element
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by smoothness
- with direct contact (without paint)
- for force acting at a right angle (in the magnet axis)
- at temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Space between magnet and steel – every 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 reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Plate material – mild steel gives the best results. Higher carbon content lower magnetic permeability and lifting capacity.
- Surface condition – ground elements ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
- Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).
Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.
Safety rules for work with NdFeB magnets
Metal Allergy
Certain individuals have a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Frequent touching might lead to skin redness. We recommend use protective gloves.
Electronic hazard
Very strong magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Precision electronics
Remember: rare earth magnets produce a field that confuses precision electronics. Keep a separation from your phone, device, and navigation systems.
Power loss in heat
Do not overheat. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).
Warning for heart patients
Health Alert: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
Conscious usage
Be careful. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can move away.
Shattering risk
NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets will cause them cracking into shards.
Physical harm
Large magnets can crush fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.
This is not a toy
Adult use only. Small elements pose a choking risk, causing serious injuries. Keep out of reach of kids and pets.
Fire risk
Machining of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
