MW 10x30 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010009
GTIN/EAN: 5906301810087
Diameter Ø
10 mm [±0,1 mm]
Height
30 mm [±0,1 mm]
Weight
17.67 g
Magnetization Direction
↑ axial
Load capacity
1.92 kg / 18.79 N
Magnetic Induction
610.80 mT / 6108 Gs
Coating
[NiCuNi] Nickel
8.61 ZŁ with VAT / pcs + price for transport
7.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - MW 10x30 / N38 - cylindrical magnet
Specification / characteristics - MW 10x30 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010009 |
| GTIN/EAN | 5906301810087 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 10 mm [±0,1 mm] |
| Height | 30 mm [±0,1 mm] |
| Weight | 17.67 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 1.92 kg / 18.79 N |
| Magnetic Induction ~ ? | 610.80 mT / 6108 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 modeling of the magnet - technical parameters
Presented information represent the direct effect of a mathematical simulation. Values were calculated on algorithms for the class Nd2Fe14B. Actual parameters might slightly differ. Use these calculations as a supplementary guide when designing systems.
Table 1: Static pull force (pull vs distance) - characteristics
MW 10x30 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
6103 Gs
610.3 mT
|
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
|
safe |
| 1 mm |
4905 Gs
490.5 mT
|
1.24 kg / 2.73 lbs
1240.1 g / 12.2 N
|
safe |
| 2 mm |
3823 Gs
382.3 mT
|
0.75 kg / 1.66 lbs
753.3 g / 7.4 N
|
safe |
| 3 mm |
2940 Gs
294.0 mT
|
0.45 kg / 0.98 lbs
445.6 g / 4.4 N
|
safe |
| 5 mm |
1754 Gs
175.4 mT
|
0.16 kg / 0.35 lbs
158.5 g / 1.6 N
|
safe |
| 10 mm |
607 Gs
60.7 mT
|
0.02 kg / 0.04 lbs
19.0 g / 0.2 N
|
safe |
| 15 mm |
280 Gs
28.0 mT
|
0.00 kg / 0.01 lbs
4.0 g / 0.0 N
|
safe |
| 20 mm |
154 Gs
15.4 mT
|
0.00 kg / 0.00 lbs
1.2 g / 0.0 N
|
safe |
| 30 mm |
63 Gs
6.3 mT
|
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
|
safe |
| 50 mm |
19 Gs
1.9 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
safe |
Table 2: Vertical load (wall)
MW 10x30 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.38 kg / 0.85 lbs
384.0 g / 3.8 N
|
| 1 mm | Stal (~0.2) |
0.25 kg / 0.55 lbs
248.0 g / 2.4 N
|
| 2 mm | Stal (~0.2) |
0.15 kg / 0.33 lbs
150.0 g / 1.5 N
|
| 3 mm | Stal (~0.2) |
0.09 kg / 0.20 lbs
90.0 g / 0.9 N
|
| 5 mm | Stal (~0.2) |
0.03 kg / 0.07 lbs
32.0 g / 0.3 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) - vertical pull
MW 10x30 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.58 kg / 1.27 lbs
576.0 g / 5.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.38 kg / 0.85 lbs
384.0 g / 3.8 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.19 kg / 0.42 lbs
192.0 g / 1.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.96 kg / 2.12 lbs
960.0 g / 9.4 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 10x30 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.19 kg / 0.42 lbs
192.0 g / 1.9 N
|
| 1 mm |
|
0.48 kg / 1.06 lbs
480.0 g / 4.7 N
|
| 2 mm |
|
0.96 kg / 2.12 lbs
960.0 g / 9.4 N
|
| 3 mm |
|
1.44 kg / 3.17 lbs
1440.0 g / 14.1 N
|
| 5 mm |
|
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
|
| 10 mm |
|
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
|
| 11 mm |
|
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
|
| 12 mm |
|
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
|
Table 5: Thermal stability (stability) - thermal limit
MW 10x30 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
1.92 kg / 4.23 lbs
1920.0 g / 18.8 N
|
OK |
| 40 °C | -2.2% |
1.88 kg / 4.14 lbs
1877.8 g / 18.4 N
|
OK |
| 60 °C | -4.4% |
1.84 kg / 4.05 lbs
1835.5 g / 18.0 N
|
OK |
| 80 °C | -6.6% |
1.79 kg / 3.95 lbs
1793.3 g / 17.6 N
|
|
| 100 °C | -28.8% |
1.37 kg / 3.01 lbs
1367.0 g / 13.4 N
|
Table 6: Two magnets (attraction) - field range
MW 10x30 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
18.04 kg / 39.76 lbs
6 166 Gs
|
2.71 kg / 5.96 lbs
2705 g / 26.5 N
|
N/A |
| 1 mm |
14.65 kg / 32.31 lbs
11 003 Gs
|
2.20 kg / 4.85 lbs
2198 g / 21.6 N
|
13.19 kg / 29.08 lbs
~0 Gs
|
| 2 mm |
11.65 kg / 25.68 lbs
9 810 Gs
|
1.75 kg / 3.85 lbs
1747 g / 17.1 N
|
10.48 kg / 23.11 lbs
~0 Gs
|
| 3 mm |
9.13 kg / 20.12 lbs
8 684 Gs
|
1.37 kg / 3.02 lbs
1369 g / 13.4 N
|
8.21 kg / 18.11 lbs
~0 Gs
|
| 5 mm |
5.45 kg / 12.02 lbs
6 710 Gs
|
0.82 kg / 1.80 lbs
818 g / 8.0 N
|
4.91 kg / 10.82 lbs
~0 Gs
|
| 10 mm |
1.49 kg / 3.28 lbs
3 507 Gs
|
0.22 kg / 0.49 lbs
223 g / 2.2 N
|
1.34 kg / 2.95 lbs
~0 Gs
|
| 20 mm |
0.18 kg / 0.39 lbs
1 213 Gs
|
0.03 kg / 0.06 lbs
27 g / 0.3 N
|
0.16 kg / 0.35 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.01 lbs
190 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 lbs
126 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
88 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
64 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
48 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
37 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MW 10x30 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 8.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 6.5 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 5.0 cm |
| Mobile device | 40 Gs (4.0 mT) | 4.0 cm |
| Remote | 50 Gs (5.0 mT) | 3.5 cm |
| Payment card | 400 Gs (40.0 mT) | 1.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
Table 8: Collisions (cracking risk) - warning
MW 10x30 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
10.58 km/h
(2.94 m/s)
|
0.08 J | |
| 30 mm |
18.21 km/h
(5.06 m/s)
|
0.23 J | |
| 50 mm |
23.51 km/h
(6.53 m/s)
|
0.38 J | |
| 100 mm |
33.24 km/h
(9.23 m/s)
|
0.75 J |
Table 9: Corrosion resistance
MW 10x30 / 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 (Pc)
MW 10x30 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 5 528 Mx | 55.3 µWb |
| Pc Coefficient | 1.38 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MW 10x30 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 1.92 kg | Standard |
| Water (riverbed) |
2.20 kg
(+0.28 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Caution: On a vertical wall, the magnet holds merely ~20% of its max power.
2. Steel thickness impact
*Thin metal sheet (e.g. 0.5mm PC case) drastically reduces the holding force.
3. Power loss vs temp
*For standard magnets, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.38
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.
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Pros and cons of rare earth magnets.
Benefits
- They retain magnetic properties for around 10 years – the loss is just ~1% (based on simulations),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- Thanks to the shimmering finish, the layer of nickel, gold, or silver-plated gives an clean appearance,
- The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Possibility of exact modeling and adjusting to precise requirements,
- Huge importance in modern industrial fields – they are utilized in HDD drives, drive modules, precision medical tools, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in miniature devices
Cons
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
- 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 during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of creating threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
- Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Best holding force of the magnet in ideal parameters – what contributes to it?
- with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
- with a thickness minimum 10 mm
- with an ideally smooth contact surface
- under conditions of no distance (metal-to-metal)
- under axial force vector (90-degree angle)
- in temp. approx. 20°C
What influences lifting capacity in practice
- Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be wasted to the other side.
- Steel grade – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity was measured with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the load capacity.
Safe handling of neodymium magnets
Heat sensitivity
Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and pulling force.
Finger safety
Large magnets can smash fingers instantly. Do not put your hand betwixt two attracting surfaces.
Protective goggles
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Keep away from computers
Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
Warning for heart patients
For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.
Warning for allergy sufferers
Some people have a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Frequent touching might lead to an allergic reaction. We recommend wear safety gloves.
Fire risk
Dust generated during machining of magnets is combustible. Do not drill into magnets unless you are an expert.
Compass and GPS
Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can permanently damage the internal compass in your phone.
Conscious usage
Handle with care. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can react.
Danger to the youngest
NdFeB magnets are not suitable for play. Eating multiple magnets can lead to them attracting across intestines, which poses a critical condition and requires immediate surgery.
