MW 6x6 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010094
GTIN/EAN: 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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Technical specification of the product - MW 6x6 / N38 - cylindrical magnet
Specification / characteristics - MW 6x6 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010094 |
| GTIN/EAN | 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 | 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 simulation of the magnet - report
These data represent the outcome of a mathematical calculation. Results are based on algorithms for the material Nd2Fe14B. Real-world parameters may differ. Please consider these calculations as a reference point during assembly planning.
Table 1: Static pull force (pull vs distance) - characteristics
MW 6x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5527 Gs
552.7 mT
|
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
|
low risk |
| 1 mm |
3738 Gs
373.8 mT
|
0.52 kg / 1.15 LBS
521.5 g / 5.1 N
|
low risk |
| 2 mm |
2366 Gs
236.6 mT
|
0.21 kg / 0.46 LBS
209.0 g / 2.0 N
|
low risk |
| 3 mm |
1498 Gs
149.8 mT
|
0.08 kg / 0.18 LBS
83.7 g / 0.8 N
|
low risk |
| 5 mm |
665 Gs
66.5 mT
|
0.02 kg / 0.04 LBS
16.5 g / 0.2 N
|
low risk |
| 10 mm |
155 Gs
15.5 mT
|
0.00 kg / 0.00 LBS
0.9 g / 0.0 N
|
low risk |
| 15 mm |
58 Gs
5.8 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
low risk |
| 20 mm |
28 Gs
2.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 30 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
low risk |
Table 2: Slippage capacity (wall)
MW 6x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.23 kg / 0.50 LBS
228.0 g / 2.2 N
|
| 1 mm | Stal (~0.2) |
0.10 kg / 0.23 LBS
104.0 g / 1.0 N
|
| 2 mm | Stal (~0.2) |
0.04 kg / 0.09 LBS
42.0 g / 0.4 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
16.0 g / 0.2 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.01 LBS
4.0 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 (shearing) - vertical pull
MW 6x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.34 kg / 0.75 LBS
342.0 g / 3.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.23 kg / 0.50 LBS
228.0 g / 2.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.11 kg / 0.25 LBS
114.0 g / 1.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.57 kg / 1.26 LBS
570.0 g / 5.6 N
|
Table 4: Steel thickness (saturation) - sheet metal selection
MW 6x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.11 kg / 0.25 LBS
114.0 g / 1.1 N
|
| 1 mm |
|
0.29 kg / 0.63 LBS
285.0 g / 2.8 N
|
| 2 mm |
|
0.57 kg / 1.26 LBS
570.0 g / 5.6 N
|
| 3 mm |
|
0.86 kg / 1.88 LBS
855.0 g / 8.4 N
|
| 5 mm |
|
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
|
| 10 mm |
|
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
|
| 11 mm |
|
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
|
| 12 mm |
|
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
|
Table 5: Thermal stability (stability) - thermal limit
MW 6x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.14 kg / 2.51 LBS
1140.0 g / 11.2 N
|
OK |
| 40 °C | -2.2% |
1.11 kg / 2.46 LBS
1114.9 g / 10.9 N
|
OK |
| 60 °C | -4.4% |
1.09 kg / 2.40 LBS
1089.8 g / 10.7 N
|
OK |
| 80 °C | -6.6% |
1.06 kg / 2.35 LBS
1064.8 g / 10.4 N
|
|
| 100 °C | -28.8% |
0.81 kg / 1.79 LBS
811.7 g / 8.0 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 6x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
5.32 kg / 11.74 LBS
5 995 Gs
|
0.80 kg / 1.76 LBS
799 g / 7.8 N
|
N/A |
| 1 mm |
3.70 kg / 8.17 LBS
9 220 Gs
|
0.56 kg / 1.23 LBS
556 g / 5.5 N
|
3.33 kg / 7.35 LBS
~0 Gs
|
| 2 mm |
2.44 kg / 5.37 LBS
7 476 Gs
|
0.37 kg / 0.81 LBS
365 g / 3.6 N
|
2.19 kg / 4.83 LBS
~0 Gs
|
| 3 mm |
1.55 kg / 3.42 LBS
5 968 Gs
|
0.23 kg / 0.51 LBS
233 g / 2.3 N
|
1.40 kg / 3.08 LBS
~0 Gs
|
| 5 mm |
0.61 kg / 1.35 LBS
3 755 Gs
|
0.09 kg / 0.20 LBS
92 g / 0.9 N
|
0.55 kg / 1.22 LBS
~0 Gs
|
| 10 mm |
0.08 kg / 0.17 LBS
1 330 Gs
|
0.01 kg / 0.03 LBS
12 g / 0.1 N
|
0.07 kg / 0.15 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.01 LBS
311 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 LBS
31 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
19 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
12 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
8 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
6 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
5 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Protective zones (implants) - precautionary measures
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 |
| Car key | 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 |
Table 8: Dynamics (cracking risk) - warning
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 |
Table 9: Anti-corrosion coating durability
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) |
Table 10: Electrical data (Flux)
MW 6x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 613 Mx | 16.1 µWb |
| Pc Coefficient | 0.89 | High (Stable) |
Table 11: Underwater work (magnet fishing)
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. Vertical hold
*Note: On a vertical surface, the magnet retains only a fraction of its perpendicular strength.
2. Steel thickness impact
*Thin steel (e.g. computer case) severely limits the holding force.
3. Power loss vs temp
*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) = 0.89
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.
Chemical composition
| 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out also proposals
Pros and cons of rare earth magnets.
Strengths
- They retain magnetic properties for nearly ten years – the drop is just ~1% (based on simulations),
- They do not lose their magnetic properties even under close interference source,
- Thanks to the shimmering finish, the surface of Ni-Cu-Ni, gold, or silver gives an visually attractive appearance,
- Magnets are distinguished by maximum magnetic induction on the working surface,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to freedom in forming and the ability to customize to individual projects,
- Universal use in high-tech industry – they are used in HDD drives, drive modules, diagnostic systems, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices
Limitations
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their 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, as well as 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 while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in realizing nuts and complex forms in magnets, we recommend using a housing - magnetic mount.
- Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small components of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
- Due to complex production process, their price exceeds standard values,
Pull force analysis
Maximum lifting force for a neodymium magnet – what affects it?
- with the use of a yoke made of special test steel, ensuring full magnetic saturation
- with a cross-section no less than 10 mm
- with a surface perfectly flat
- without any clearance between the magnet and steel
- under vertical force direction (90-degree angle)
- in temp. approx. 20°C
Lifting capacity in real conditions – factors
- Air gap (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
- Load vector – highest force is available only during pulling at a 90° angle. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted to the other side.
- Steel type – low-carbon steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
- Surface structure – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
- Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of NdFeB magnets
Handling guide
Exercise caution. Rare earth magnets attract from a long distance and snap with huge force, often quicker than you can move away.
Combustion hazard
Powder produced during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Safe distance
Do not bring magnets close to a purse, computer, or TV. The magnetic field can destroy these devices and wipe information from cards.
This is not a toy
NdFeB magnets are not intended for children. Eating a few magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.
Phone sensors
A strong magnetic field interferes with the operation of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid breaking the sensors.
Nickel allergy
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation appears, immediately stop handling magnets and wear gloves.
Medical interference
People with a pacemaker must keep an large gap from magnets. The magnetic field can interfere with the operation of the implant.
Heat warning
Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. Damage is permanent.
Eye protection
NdFeB magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets leads to them breaking into shards.
Crushing risk
Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!
