MW 10x8 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010013
GTIN/EAN: 5906301810124
Diameter Ø
10 mm [±0,1 mm]
Height
8 mm [±0,1 mm]
Weight
4.71 g
Magnetization Direction
↑ axial
Load capacity
3.38 kg / 33.16 N
Magnetic Induction
525.10 mT / 5251 Gs
Coating
[NiCuNi] Nickel
2.18 ZŁ with VAT / pcs + price for transport
1.770 ZŁ net + 23% VAT / pcs
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Technical of the product - MW 10x8 / N38 - cylindrical magnet
Specification / characteristics - MW 10x8 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010013 |
| GTIN/EAN | 5906301810124 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 8 mm [±0,1 mm] |
| Weight | 4.71 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.38 kg / 33.16 N |
| Magnetic Induction ~ ? | 525.10 mT / 5251 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 simulation of the product - report
These data constitute the direct effect of a engineering analysis. Results rely on algorithms for the class Nd2Fe14B. Real-world performance might slightly differ from theoretical values. Please consider these data as a supplementary guide for designers.
Table 1: Static pull force (pull vs gap) - characteristics
MW 10x8 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5247 Gs
524.7 mT
|
3.38 kg / 7.45 pounds
3380.0 g / 33.2 N
|
strong |
| 1 mm |
4204 Gs
420.4 mT
|
2.17 kg / 4.78 pounds
2169.6 g / 21.3 N
|
strong |
| 2 mm |
3243 Gs
324.3 mT
|
1.29 kg / 2.85 pounds
1291.0 g / 12.7 N
|
low risk |
| 3 mm |
2454 Gs
245.4 mT
|
0.74 kg / 1.63 pounds
739.6 g / 7.3 N
|
low risk |
| 5 mm |
1403 Gs
140.3 mT
|
0.24 kg / 0.53 pounds
241.5 g / 2.4 N
|
low risk |
| 10 mm |
428 Gs
42.8 mT
|
0.02 kg / 0.05 pounds
22.5 g / 0.2 N
|
low risk |
| 15 mm |
177 Gs
17.7 mT
|
0.00 kg / 0.01 pounds
3.8 g / 0.0 N
|
low risk |
| 20 mm |
89 Gs
8.9 mT
|
0.00 kg / 0.00 pounds
1.0 g / 0.0 N
|
low risk |
| 30 mm |
31 Gs
3.1 mT
|
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
|
low risk |
| 50 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
low risk |
Table 2: Shear load (wall)
MW 10x8 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.68 kg / 1.49 pounds
676.0 g / 6.6 N
|
| 1 mm | Stal (~0.2) |
0.43 kg / 0.96 pounds
434.0 g / 4.3 N
|
| 2 mm | Stal (~0.2) |
0.26 kg / 0.57 pounds
258.0 g / 2.5 N
|
| 3 mm | Stal (~0.2) |
0.15 kg / 0.33 pounds
148.0 g / 1.5 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 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 (shearing) - vertical pull
MW 10x8 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
1.01 kg / 2.24 pounds
1014.0 g / 9.9 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.68 kg / 1.49 pounds
676.0 g / 6.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.34 kg / 0.75 pounds
338.0 g / 3.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.69 kg / 3.73 pounds
1690.0 g / 16.6 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 10x8 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.34 kg / 0.75 pounds
338.0 g / 3.3 N
|
| 1 mm |
|
0.85 kg / 1.86 pounds
845.0 g / 8.3 N
|
| 2 mm |
|
1.69 kg / 3.73 pounds
1690.0 g / 16.6 N
|
| 3 mm |
|
2.54 kg / 5.59 pounds
2535.0 g / 24.9 N
|
| 5 mm |
|
3.38 kg / 7.45 pounds
3380.0 g / 33.2 N
|
| 10 mm |
|
3.38 kg / 7.45 pounds
3380.0 g / 33.2 N
|
| 11 mm |
|
3.38 kg / 7.45 pounds
3380.0 g / 33.2 N
|
| 12 mm |
|
3.38 kg / 7.45 pounds
3380.0 g / 33.2 N
|
Table 5: Thermal stability (stability) - resistance threshold
MW 10x8 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.38 kg / 7.45 pounds
3380.0 g / 33.2 N
|
OK |
| 40 °C | -2.2% |
3.31 kg / 7.29 pounds
3305.6 g / 32.4 N
|
OK |
| 60 °C | -4.4% |
3.23 kg / 7.12 pounds
3231.3 g / 31.7 N
|
OK |
| 80 °C | -6.6% |
3.16 kg / 6.96 pounds
3156.9 g / 31.0 N
|
|
| 100 °C | -28.8% |
2.41 kg / 5.31 pounds
2406.6 g / 23.6 N
|
Table 6: Two magnets (attraction) - forces in the system
MW 10x8 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
13.33 kg / 29.39 pounds
5 906 Gs
|
2.00 kg / 4.41 pounds
2000 g / 19.6 N
|
N/A |
| 1 mm |
10.82 kg / 23.85 pounds
9 454 Gs
|
1.62 kg / 3.58 pounds
1623 g / 15.9 N
|
9.74 kg / 21.47 pounds
~0 Gs
|
| 2 mm |
8.56 kg / 18.86 pounds
8 408 Gs
|
1.28 kg / 2.83 pounds
1284 g / 12.6 N
|
7.70 kg / 16.98 pounds
~0 Gs
|
| 3 mm |
6.65 kg / 14.65 pounds
7 410 Gs
|
1.00 kg / 2.20 pounds
997 g / 9.8 N
|
5.98 kg / 13.19 pounds
~0 Gs
|
| 5 mm |
3.86 kg / 8.52 pounds
5 650 Gs
|
0.58 kg / 1.28 pounds
580 g / 5.7 N
|
3.48 kg / 7.67 pounds
~0 Gs
|
| 10 mm |
0.95 kg / 2.10 pounds
2 805 Gs
|
0.14 kg / 0.32 pounds
143 g / 1.4 N
|
0.86 kg / 1.89 pounds
~0 Gs
|
| 20 mm |
0.09 kg / 0.20 pounds
857 Gs
|
0.01 kg / 0.03 pounds
13 g / 0.1 N
|
0.08 kg / 0.18 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
101 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
63 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
42 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
29 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
21 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
16 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Hazards (implants) - warnings
MW 10x8 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 6.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 5.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 4.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 3.0 cm |
| Remote | 50 Gs (5.0 mT) | 3.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.0 cm |
Table 8: Dynamics (kinetic energy) - warning
MW 10x8 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
27.13 km/h
(7.54 m/s)
|
0.13 J | |
| 30 mm |
46.80 km/h
(13.00 m/s)
|
0.40 J | |
| 50 mm |
60.41 km/h
(16.78 m/s)
|
0.66 J | |
| 100 mm |
85.43 km/h
(23.73 m/s)
|
1.33 J |
Table 9: Anti-corrosion coating durability
MW 10x8 / 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 10x8 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 4 183 Mx | 41.8 µWb |
| Pc Coefficient | 0.79 | High (Stable) |
Table 11: Submerged application
MW 10x8 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.38 kg | Standard |
| Water (riverbed) |
3.87 kg
(+0.49 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Caution: On a vertical wall, the magnet retains just ~20% of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) drastically reduces the holding force.
3. Heat tolerance
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.79
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Advantages as well as disadvantages of Nd2Fe14B magnets.
Strengths
- They do not lose strength, even after nearly 10 years – the drop in power is only ~1% (theoretically),
- They are resistant to demagnetization induced by external magnetic fields,
- The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnetic induction on the working layer of the magnet is impressive,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- In view of the option of accurate molding and adaptation to specialized requirements, magnetic components can be manufactured in a variety of forms and dimensions, which makes them more universal,
- Fundamental importance in electronics industry – they serve a role in mass storage devices, electromotive mechanisms, medical equipment, also complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing nuts and complex shapes in magnets, we propose using casing - magnetic holder.
- Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Additionally, small elements of these products are able to disrupt the diagnostic process medical after entering the body.
- Due to complex production process, their price exceeds standard values,
Holding force characteristics
Magnetic strength at its maximum – what affects it?
- on a plate made of structural steel, perfectly concentrating the magnetic flux
- whose thickness equals approx. 10 mm
- with a plane cleaned and smooth
- without any insulating layer between the magnet and steel
- during detachment in a direction perpendicular to the mounting surface
- at conditions approx. 20°C
Magnet lifting force in use – key factors
- Distance – existence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
- Base smoothness – the more even the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under shearing force the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.
Safe handling of neodymium magnets
Maximum temperature
Watch the temperature. Heating the magnet to high heat will permanently weaken its properties and strength.
Compass and GPS
A strong magnetic field interferes with the operation of magnetometers in smartphones and navigation systems. Maintain magnets near a smartphone to avoid damaging the sensors.
Conscious usage
Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Think ahead.
Finger safety
Danger of trauma: The pulling power is so great that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.
Nickel allergy
A percentage of the population experience a contact allergy to nickel, which is the common plating for NdFeB magnets. Extended handling may cause skin redness. It is best to wear safety gloves.
Pacemakers
People with a pacemaker must maintain an large gap from magnets. The magnetism can stop the operation of the life-saving device.
Electronic devices
Powerful magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.
Machining danger
Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Adults only
Always keep magnets away from children. Ingestion danger is high, and the effects of magnets connecting inside the body are very dangerous.
Fragile material
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.
