MW 6x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010092
GTIN/EAN: 5906301810919
Diameter Ø
6 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
0.42 g
Magnetization Direction
↑ axial
Load capacity
0.86 kg / 8.43 N
Magnetic Induction
343.37 mT / 3434 Gs
Coating
[NiCuNi] Nickel
0.246 ZŁ with VAT / pcs + price for transport
0.200 ZŁ net + 23% VAT / pcs
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Technical specification of the product - MW 6x2 / N38 - cylindrical magnet
Specification / characteristics - MW 6x2 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010092 |
| GTIN/EAN | 5906301810919 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 0.42 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.86 kg / 8.43 N |
| Magnetic Induction ~ ? | 343.37 mT / 3434 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 |
Engineering modeling of the product - report
The following information are the direct effect of a engineering calculation. Results were calculated on models for the class Nd2Fe14B. Actual parameters may differ from theoretical values. Please consider these calculations as a preliminary roadmap during assembly planning.
Table 1: Static force (force vs gap) - characteristics
MW 6x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
3430 Gs
343.0 mT
|
0.86 kg / 860.0 g
8.4 N
|
safe |
| 1 mm |
2423 Gs
242.3 mT
|
0.43 kg / 429.2 g
4.2 N
|
safe |
| 2 mm |
1521 Gs
152.1 mT
|
0.17 kg / 169.0 g
1.7 N
|
safe |
| 3 mm |
932 Gs
93.2 mT
|
0.06 kg / 63.5 g
0.6 N
|
safe |
| 5 mm |
382 Gs
38.2 mT
|
0.01 kg / 10.7 g
0.1 N
|
safe |
| 10 mm |
76 Gs
7.6 mT
|
0.00 kg / 0.4 g
0.0 N
|
safe |
| 15 mm |
26 Gs
2.6 mT
|
0.00 kg / 0.0 g
0.0 N
|
safe |
| 20 mm |
12 Gs
1.2 mT
|
0.00 kg / 0.0 g
0.0 N
|
safe |
| 30 mm |
4 Gs
0.4 mT
|
0.00 kg / 0.0 g
0.0 N
|
safe |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.0 g
0.0 N
|
safe |
Table 2: Sliding capacity (wall)
MW 6x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.17 kg / 172.0 g
1.7 N
|
| 1 mm | Stal (~0.2) |
0.09 kg / 86.0 g
0.8 N
|
| 2 mm | Stal (~0.2) |
0.03 kg / 34.0 g
0.3 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 12.0 g
0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 2.0 g
0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.0 g
0.0 N
|
Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 6x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.26 kg / 258.0 g
2.5 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.17 kg / 172.0 g
1.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.09 kg / 86.0 g
0.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.43 kg / 430.0 g
4.2 N
|
Table 4: Steel thickness (saturation) - sheet metal selection
MW 6x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.09 kg / 86.0 g
0.8 N
|
| 1 mm |
|
0.22 kg / 215.0 g
2.1 N
|
| 2 mm |
|
0.43 kg / 430.0 g
4.2 N
|
| 5 mm |
|
0.86 kg / 860.0 g
8.4 N
|
| 10 mm |
|
0.86 kg / 860.0 g
8.4 N
|
Table 5: Thermal resistance (material behavior) - power drop
MW 6x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.86 kg / 860.0 g
8.4 N
|
OK |
| 40 °C | -2.2% |
0.84 kg / 841.1 g
8.3 N
|
OK |
| 60 °C | -4.4% |
0.82 kg / 822.2 g
8.1 N
|
|
| 80 °C | -6.6% |
0.80 kg / 803.2 g
7.9 N
|
|
| 100 °C | -28.8% |
0.61 kg / 612.3 g
6.0 N
|
Table 6: Two magnets (attraction) - field collision
MW 6x2 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
2.05 kg / 2051 g
20.1 N
4 944 Gs
|
N/A |
| 1 mm |
1.52 kg / 1517 g
14.9 N
5 900 Gs
|
1.37 kg / 1365 g
13.4 N
~0 Gs
|
| 2 mm |
1.02 kg / 1024 g
10.0 N
4 847 Gs
|
0.92 kg / 921 g
9.0 N
~0 Gs
|
| 3 mm |
0.65 kg / 652 g
6.4 N
3 869 Gs
|
0.59 kg / 587 g
5.8 N
~0 Gs
|
| 5 mm |
0.25 kg / 247 g
2.4 N
2 379 Gs
|
0.22 kg / 222 g
2.2 N
~0 Gs
|
| 10 mm |
0.03 kg / 25 g
0.2 N
764 Gs
|
0.02 kg / 23 g
0.2 N
~0 Gs
|
| 20 mm |
0.00 kg / 1 g
0.0 N
153 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
| 50 mm |
0.00 kg / 0 g
0.0 N
12 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MW 6x2 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 3.0 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 |
| Remote | 50 Gs (5.0 mT) | 1.5 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 (cracking risk) - collision effects
MW 6x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
45.65 km/h
(12.68 m/s)
|
0.03 J | |
| 30 mm |
79.04 km/h
(21.96 m/s)
|
0.10 J | |
| 50 mm |
102.04 km/h
(28.35 m/s)
|
0.17 J | |
| 100 mm |
144.31 km/h
(40.09 m/s)
|
0.34 J |
Table 9: Anti-corrosion coating durability
MW 6x2 / 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: Construction data (Flux)
MW 6x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 029 Mx | 10.3 µWb |
| Pc Coefficient | 0.44 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 6x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.86 kg | Standard |
| Water (riverbed) |
0.98 kg
(+0.12 kg Buoyancy gain)
|
+14.5% |
1. Vertical hold
*Warning: On a vertical surface, the magnet retains just ~20% of its perpendicular strength.
2. Efficiency vs thickness
*Thin steel (e.g. computer case) drastically weakens the holding force.
3. Temperature resistance
*For N38 material, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.44
The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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 |
View also deals
Advantages and disadvantages of rare earth magnets.
Strengths
- They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets are highly resistant to loss of magnetic properties caused by external magnetic fields,
- Thanks to the elegant finish, the surface of Ni-Cu-Ni, gold, or silver gives an visually attractive appearance,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to freedom in shaping and the ability to modify to unusual requirements,
- Fundamental importance in future technologies – they find application in magnetic memories, electric drive systems, precision medical tools, and multitasking production systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Weaknesses
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer 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
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing threads and complex forms in magnets, we propose using casing - magnetic mechanism.
- Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that small elements of these magnets are able to be problematic in diagnostics medical in case of swallowing.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Highest magnetic holding force – what it depends on?
- using a sheet made of low-carbon steel, serving as a ideal flux conductor
- whose thickness is min. 10 mm
- with a surface cleaned and smooth
- without the slightest clearance between the magnet and steel
- under perpendicular application of breakaway force (90-degree angle)
- in stable room temperature
Practical aspects of lifting capacity – factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Smoothness – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was assessed by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance between the magnet and the plate reduces the holding force.
Warnings
Metal Allergy
Studies show that nickel (standard magnet coating) is a strong allergen. If you have an allergy, avoid direct skin contact and select encased magnets.
Material brittleness
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets will cause them cracking into shards.
Medical implants
Warning for patients: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.
Thermal limits
Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.
Danger to the youngest
Strictly keep magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are very dangerous.
Phone sensors
A strong magnetic field interferes with the operation of compasses in smartphones and navigation systems. Keep magnets near a device to avoid damaging the sensors.
Pinching danger
Large magnets can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.
Threat to electronics
Intense magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Stay away of min. 10 cm.
Dust is flammable
Machining of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Immense force
Handle magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and do not underestimate their force.
