MW 6x6 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010094
GTIN: 5906301810933
Diameter Ø
6 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
1.27 g
Magnetization Direction
↑ axial
Load capacity
1.14 kg / 11.18 N
Magnetic Induction
553.38 mT / 5534 Gs
Coating
[NiCuNi] Nickel
0.677 ZŁ with VAT / pcs + price for transport
0.550 ZŁ net + 23% VAT / pcs
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MW 6x6 / N38 - cylindrical magnet
Specification / characteristics MW 6x6 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010094 |
| GTIN | 5906301810933 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 1.27 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.14 kg / 11.18 N |
| Magnetic Induction ~ ? | 553.38 mT / 5534 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 | T |
| 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 106 | °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 - technical parameters
The following values are the outcome of a mathematical calculation. Results rely on models for the class Nd2Fe14B. Real-world conditions might slightly differ from theoretical values. Please consider these data as a preliminary roadmap for designers.
MW 6x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
5527 Gs
552.7 mT
|
1.14 kg / 1140.0 g
11.2 N
|
weak grip |
| 1 mm |
3738 Gs
373.8 mT
|
0.52 kg / 521.5 g
5.1 N
|
weak grip |
| 2 mm |
2366 Gs
236.6 mT
|
0.21 kg / 209.0 g
2.0 N
|
weak grip |
| 3 mm |
1498 Gs
149.8 mT
|
0.08 kg / 83.7 g
0.8 N
|
weak grip |
| 5 mm |
665 Gs
66.5 mT
|
0.02 kg / 16.5 g
0.2 N
|
weak grip |
| 10 mm |
155 Gs
15.5 mT
|
0.00 kg / 0.9 g
0.0 N
|
weak grip |
| 15 mm |
58 Gs
5.8 mT
|
0.00 kg / 0.1 g
0.0 N
|
weak grip |
| 20 mm |
28 Gs
2.8 mT
|
0.00 kg / 0.0 g
0.0 N
|
weak grip |
| 30 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.0 g
0.0 N
|
weak grip |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.0 g
0.0 N
|
weak grip |
MW 6x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.23 kg / 228.0 g
2.2 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 104.0 g
1.0 N
|
| 2 mm | Stal (~0.2) |
0.04 kg / 42.0 g
0.4 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 16.0 g
0.2 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 4.0 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
|
MW 6x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.34 kg / 342.0 g
3.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.23 kg / 228.0 g
2.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.11 kg / 114.0 g
1.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.57 kg / 570.0 g
5.6 N
|
MW 6x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.11 kg / 114.0 g
1.1 N
|
| 1 mm |
|
0.29 kg / 285.0 g
2.8 N
|
| 2 mm |
|
0.57 kg / 570.0 g
5.6 N
|
| 5 mm |
|
1.14 kg / 1140.0 g
11.2 N
|
| 10 mm |
|
1.14 kg / 1140.0 g
11.2 N
|
MW 6x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.14 kg / 1140.0 g
11.2 N
|
OK |
| 40 °C | -2.2% |
1.11 kg / 1114.9 g
10.9 N
|
OK |
| 60 °C | -4.4% |
1.09 kg / 1089.8 g
10.7 N
|
OK |
| 80 °C | -6.6% |
1.06 kg / 1064.8 g
10.4 N
|
|
| 100 °C | -28.8% |
0.81 kg / 811.7 g
8.0 N
|
MW 6x6 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
5.32 kg / 5324 g
52.2 N
5 995 Gs
|
N/A |
| 1 mm |
3.70 kg / 3705 g
36.3 N
9 220 Gs
|
3.33 kg / 3334 g
32.7 N
~0 Gs
|
| 2 mm |
2.44 kg / 2436 g
23.9 N
7 476 Gs
|
2.19 kg / 2192 g
21.5 N
~0 Gs
|
| 3 mm |
1.55 kg / 1552 g
15.2 N
5 968 Gs
|
1.40 kg / 1397 g
13.7 N
~0 Gs
|
| 5 mm |
0.61 kg / 614 g
6.0 N
3 755 Gs
|
0.55 kg / 553 g
5.4 N
~0 Gs
|
| 10 mm |
0.08 kg / 77 g
0.8 N
1 330 Gs
|
0.07 kg / 69 g
0.7 N
~0 Gs
|
| 20 mm |
0.00 kg / 4 g
0.0 N
311 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
| 50 mm |
0.00 kg / 0 g
0.0 N
31 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
MW 6x6 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 2.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.0 cm |
| Remote | 50 Gs (5.0 mT) | 2.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
MW 6x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
30.23 km/h
(8.40 m/s)
|
0.04 J | |
| 30 mm |
52.34 km/h
(14.54 m/s)
|
0.13 J | |
| 50 mm |
67.56 km/h
(18.77 m/s)
|
0.22 J | |
| 100 mm |
95.55 km/h
(26.54 m/s)
|
0.45 J |
MW 6x6 / 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) |
MW 6x6 / N38
| Parameter | Value | Jedn. SI / Opis |
|---|---|---|
| Strumień (Flux) | 1 613 Mx | 16.1 µWb |
| Współczynnik Pc | 0.89 | Wysoki (Stabilny) |
MW 6x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.14 kg | Standard |
| Water (riverbed) |
1.31 kg
(+0.17 kg Buoyancy gain)
|
+14.5% |
1. Shear force
*Note: On a vertical surface, the magnet retains merely a fraction of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. 0.5mm PC case) severely weakens the holding force.
3. Heat tolerance
*For standard magnets, the safety limit is 80°C.
Other offers
Advantages and disadvantages of rare earth magnets.
Pros
- They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
- Neodymium magnets remain extremely resistant to loss of magnetic properties caused by magnetic disturbances,
- Thanks to the elegant finish, the layer of nickel, gold, or silver gives an modern appearance,
- Magnetic induction on the working part of the magnet is exceptional,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
- Thanks to versatility in constructing and the ability to adapt to client solutions,
- Significant place in electronics industry – they serve a role in mass storage devices, motor assemblies, advanced medical instruments, and complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Weaknesses
- At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength 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 advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- Limited ability of making threads in the magnet and complex forms - recommended is a housing - mounting mechanism.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these products are able to be problematic in diagnostics medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what it depends on?
- on a base made of mild steel, effectively closing the magnetic flux
- possessing a massiveness of at least 10 mm to avoid saturation
- with an ideally smooth touching surface
- under conditions of no distance (surface-to-surface)
- under axial force direction (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Lifting capacity in real conditions – factors
- Air gap (betwixt the magnet and the plate), as even a tiny clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, rust or dirt).
- Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Material composition – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
- Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal reduce efficiency.
- Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate reduces the lifting capacity.
Machining danger
Dust produced during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Powerful field
Use magnets consciously. Their immense force can surprise even experienced users. Be vigilant and respect their power.
Electronic devices
Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).
Sensitization to coating
Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness happens, immediately stop working with magnets and wear gloves.
Magnetic interference
A strong magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets close to a device to prevent damaging the sensors.
Bodily injuries
Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and broken bones. Use thick gloves.
Magnet fragility
NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them breaking into small pieces.
Permanent damage
Do not overheat. Neodymium magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).
Pacemakers
Patients with a ICD have to maintain an absolute distance from magnets. The magnetic field can stop the functioning of the life-saving device.
Keep away from children
These products are not toys. Swallowing multiple magnets can lead to them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.
