MW 10x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010004
GTIN/EAN: 5906301810032
Diameter Ø
10 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
5.89 g
Magnetization Direction
↑ axial
Load capacity
3.18 kg / 31.19 N
Magnetic Induction
553.84 mT / 5538 Gs
Coating
[NiCuNi] Nickel
4.31 ZŁ with VAT / pcs + price for transport
3.50 ZŁ net + 23% VAT / pcs
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Technical details - MW 10x10 / N38 - cylindrical magnet
Specification / characteristics - MW 10x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010004 |
| GTIN/EAN | 5906301810032 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 5.89 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 3.18 kg / 31.19 N |
| Magnetic Induction ~ ? | 553.84 mT / 5538 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 |
Physical analysis of the product - report
These values are the direct effect of a engineering analysis. Results are based on models for the class Nd2Fe14B. Actual performance might slightly differ from theoretical values. Please consider these calculations as a reference point during assembly planning.
Table 1: Static pull force (pull vs gap) - power drop
MW 10x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5534 Gs
553.4 mT
|
3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
|
strong |
| 1 mm |
4428 Gs
442.8 mT
|
2.04 kg / 4.49 lbs
2036.1 g / 20.0 N
|
strong |
| 2 mm |
3420 Gs
342.0 mT
|
1.21 kg / 2.68 lbs
1214.8 g / 11.9 N
|
weak grip |
| 3 mm |
2597 Gs
259.7 mT
|
0.70 kg / 1.54 lbs
700.2 g / 6.9 N
|
weak grip |
| 5 mm |
1498 Gs
149.8 mT
|
0.23 kg / 0.51 lbs
232.9 g / 2.3 N
|
weak grip |
| 10 mm |
469 Gs
46.9 mT
|
0.02 kg / 0.05 lbs
22.9 g / 0.2 N
|
weak grip |
| 15 mm |
198 Gs
19.8 mT
|
0.00 kg / 0.01 lbs
4.1 g / 0.0 N
|
weak grip |
| 20 mm |
101 Gs
10.1 mT
|
0.00 kg / 0.00 lbs
1.1 g / 0.0 N
|
weak grip |
| 30 mm |
36 Gs
3.6 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
weak grip |
| 50 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
Table 2: Slippage capacity (vertical surface)
MW 10x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.64 kg / 1.40 lbs
636.0 g / 6.2 N
|
| 1 mm | Stal (~0.2) |
0.41 kg / 0.90 lbs
408.0 g / 4.0 N
|
| 2 mm | Stal (~0.2) |
0.24 kg / 0.53 lbs
242.0 g / 2.4 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 0.31 lbs
140.0 g / 1.4 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 0.10 lbs
46.0 g / 0.5 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 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) - behavior on slippery surfaces
MW 10x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.95 kg / 2.10 lbs
954.0 g / 9.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.64 kg / 1.40 lbs
636.0 g / 6.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.32 kg / 0.70 lbs
318.0 g / 3.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.59 kg / 3.51 lbs
1590.0 g / 15.6 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 10x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.32 kg / 0.70 lbs
318.0 g / 3.1 N
|
| 1 mm |
|
0.80 kg / 1.75 lbs
795.0 g / 7.8 N
|
| 2 mm |
|
1.59 kg / 3.51 lbs
1590.0 g / 15.6 N
|
| 3 mm |
|
2.39 kg / 5.26 lbs
2385.0 g / 23.4 N
|
| 5 mm |
|
3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
|
| 10 mm |
|
3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
|
| 11 mm |
|
3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
|
| 12 mm |
|
3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
|
Table 5: Thermal stability (material behavior) - resistance threshold
MW 10x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.18 kg / 7.01 lbs
3180.0 g / 31.2 N
|
OK |
| 40 °C | -2.2% |
3.11 kg / 6.86 lbs
3110.0 g / 30.5 N
|
OK |
| 60 °C | -4.4% |
3.04 kg / 6.70 lbs
3040.1 g / 29.8 N
|
OK |
| 80 °C | -6.6% |
2.97 kg / 6.55 lbs
2970.1 g / 29.1 N
|
|
| 100 °C | -28.8% |
2.26 kg / 4.99 lbs
2264.2 g / 22.2 N
|
Table 6: Two magnets (attraction) - field range
MW 10x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
14.83 kg / 32.69 lbs
6 003 Gs
|
2.22 kg / 4.90 lbs
2224 g / 21.8 N
|
N/A |
| 1 mm |
12.01 kg / 26.48 lbs
9 962 Gs
|
1.80 kg / 3.97 lbs
1802 g / 17.7 N
|
10.81 kg / 23.83 lbs
~0 Gs
|
| 2 mm |
9.50 kg / 20.93 lbs
8 857 Gs
|
1.42 kg / 3.14 lbs
1424 g / 14.0 N
|
8.55 kg / 18.84 lbs
~0 Gs
|
| 3 mm |
7.38 kg / 16.27 lbs
7 809 Gs
|
1.11 kg / 2.44 lbs
1107 g / 10.9 N
|
6.64 kg / 14.64 lbs
~0 Gs
|
| 5 mm |
4.31 kg / 9.50 lbs
5 968 Gs
|
0.65 kg / 1.43 lbs
647 g / 6.3 N
|
3.88 kg / 8.55 lbs
~0 Gs
|
| 10 mm |
1.09 kg / 2.39 lbs
2 996 Gs
|
0.16 kg / 0.36 lbs
163 g / 1.6 N
|
0.98 kg / 2.16 lbs
~0 Gs
|
| 20 mm |
0.11 kg / 0.24 lbs
939 Gs
|
0.02 kg / 0.04 lbs
16 g / 0.2 N
|
0.10 kg / 0.21 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
116 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
73 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
49 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
34 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
25 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
19 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) - warnings
MW 10x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 6.5 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 |
| Car key | 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: Collisions (kinetic energy) - warning
MW 10x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
23.54 km/h
(6.54 m/s)
|
0.13 J | |
| 30 mm |
40.59 km/h
(11.27 m/s)
|
0.37 J | |
| 50 mm |
52.40 km/h
(14.56 m/s)
|
0.62 J | |
| 100 mm |
74.10 km/h
(20.58 m/s)
|
1.25 J |
Table 9: Surface protection spec
MW 10x10 / 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 (Pc)
MW 10x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 4 481 Mx | 44.8 µWb |
| Pc Coefficient | 0.89 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MW 10x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 3.18 kg | Standard |
| Water (riverbed) |
3.64 kg
(+0.46 kg buoyancy gain)
|
+14.5% |
1. Shear force
*Caution: On a vertical wall, the magnet retains just ~20% of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. 0.5mm PC case) drastically weakens the holding force.
3. Heat tolerance
*For N38 material, 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
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Pros as well as cons of rare earth magnets.
Advantages
- They do not lose magnetism, even during approximately ten years – the drop in strength is only ~1% (according to tests),
- Neodymium magnets prove to be exceptionally resistant to loss of magnetic properties caused by magnetic disturbances,
- The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to look better,
- The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Considering the option of precise shaping and customization to unique projects, neodymium magnets can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
- Huge importance in future technologies – they serve a role in computer drives, brushless drives, precision medical tools, as well as complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Weaknesses
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We suggest a housing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated shapes.
- Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical in case of swallowing.
- Due to neodymium price, their price exceeds standard values,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what affects it?
- with the application of a sheet made of special test steel, ensuring maximum field concentration
- with a thickness no less than 10 mm
- characterized by smoothness
- under conditions of gap-free contact (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- in temp. approx. 20°C
Magnet lifting force in use – key factors
- Distance – existence of foreign body (rust, tape, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Load vector – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.
Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.
Safety rules for work with neodymium magnets
Compass and GPS
Remember: rare earth magnets produce a field that disrupts precision electronics. Maintain a safe distance from your phone, tablet, and navigation systems.
Thermal limits
Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.
Allergic reactions
Medical facts indicate that the nickel plating (the usual finish) is a strong allergen. If you have an allergy, prevent direct skin contact or choose coated magnets.
Eye protection
NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them breaking into shards.
Bodily injuries
Risk of injury: The pulling power is so great that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.
Adults only
Neodymium magnets are not intended for children. Swallowing a few magnets can lead to them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.
Respect the power
Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Flammability
Dust generated during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.
Electronic devices
Data protection: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).
Warning for heart patients
For implant holders: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.
