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 / 31.15 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
bulk discounts:
Need more?
Contact us by phone
+48 22 499 98 98
or drop us a message via
inquiry form
the contact section.
Parameters as well as shape of magnetic components can be calculated with our
magnetic calculator.
Orders submitted before 14:00 will be dispatched today!
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 / 31.15 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 |
Engineering simulation of the assembly - technical parameters
Presented values represent the result of a mathematical simulation. Values are based on algorithms for the class Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Please consider these data as a preliminary roadmap for designers.
Table 1: Static pull force (pull vs distance) - power drop
MW 10x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg) | Risk Status |
|---|---|---|---|
| 0 mm |
5534 Gs
553.4 mT
|
3.18 kg / 3180.0 g
31.2 N
|
strong |
| 1 mm |
4428 Gs
442.8 mT
|
2.04 kg / 2036.1 g
20.0 N
|
strong |
| 2 mm |
3420 Gs
342.0 mT
|
1.21 kg / 1214.8 g
11.9 N
|
weak grip |
| 3 mm |
2597 Gs
259.7 mT
|
0.70 kg / 700.2 g
6.9 N
|
weak grip |
| 5 mm |
1498 Gs
149.8 mT
|
0.23 kg / 232.9 g
2.3 N
|
weak grip |
| 10 mm |
469 Gs
46.9 mT
|
0.02 kg / 22.9 g
0.2 N
|
weak grip |
| 15 mm |
198 Gs
19.8 mT
|
0.00 kg / 4.1 g
0.0 N
|
weak grip |
| 20 mm |
101 Gs
10.1 mT
|
0.00 kg / 1.1 g
0.0 N
|
weak grip |
| 30 mm |
36 Gs
3.6 mT
|
0.00 kg / 0.1 g
0.0 N
|
weak grip |
| 50 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.0 g
0.0 N
|
weak grip |
Table 2: Slippage load (wall)
MW 10x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.64 kg / 636.0 g
6.2 N
|
| 1 mm | Stal (~0.2) |
0.41 kg / 408.0 g
4.0 N
|
| 2 mm | Stal (~0.2) |
0.24 kg / 242.0 g
2.4 N
|
| 3 mm | Stal (~0.2) |
0.14 kg / 140.0 g
1.4 N
|
| 5 mm | Stal (~0.2) |
0.05 kg / 46.0 g
0.5 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 4.0 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
|
Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 10x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.95 kg / 954.0 g
9.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.64 kg / 636.0 g
6.2 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.32 kg / 318.0 g
3.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.59 kg / 1590.0 g
15.6 N
|
Table 4: Material efficiency (substrate influence) - power losses
MW 10x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg) |
|---|---|---|
| 0.5 mm |
|
0.32 kg / 318.0 g
3.1 N
|
| 1 mm |
|
0.80 kg / 795.0 g
7.8 N
|
| 2 mm |
|
1.59 kg / 1590.0 g
15.6 N
|
| 5 mm |
|
3.18 kg / 3180.0 g
31.2 N
|
| 10 mm |
|
3.18 kg / 3180.0 g
31.2 N
|
Table 5: Working in heat (stability) - resistance threshold
MW 10x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull | Status |
|---|---|---|---|
| 20 °C | 0.0% |
3.18 kg / 3180.0 g
31.2 N
|
OK |
| 40 °C | -2.2% |
3.11 kg / 3110.0 g
30.5 N
|
OK |
| 60 °C | -4.4% |
3.04 kg / 3040.1 g
29.8 N
|
OK |
| 80 °C | -6.6% |
2.97 kg / 2970.1 g
29.1 N
|
|
| 100 °C | -28.8% |
2.26 kg / 2264.2 g
22.2 N
|
Table 6: Two magnets (attraction) - field collision
MW 10x10 / N38
| Gap (mm) | Attraction (kg) (N-S) | Repulsion (kg) (N-N) |
|---|---|---|
| 0 mm |
14.83 kg / 14830 g
145.5 N
6 003 Gs
|
N/A |
| 1 mm |
12.01 kg / 12012 g
117.8 N
9 962 Gs
|
10.81 kg / 10811 g
106.1 N
~0 Gs
|
| 2 mm |
9.50 kg / 9495 g
93.1 N
8 857 Gs
|
8.55 kg / 8546 g
83.8 N
~0 Gs
|
| 3 mm |
7.38 kg / 7381 g
72.4 N
7 809 Gs
|
6.64 kg / 6643 g
65.2 N
~0 Gs
|
| 5 mm |
4.31 kg / 4311 g
42.3 N
5 968 Gs
|
3.88 kg / 3880 g
38.1 N
~0 Gs
|
| 10 mm |
1.09 kg / 1086 g
10.7 N
2 996 Gs
|
0.98 kg / 978 g
9.6 N
~0 Gs
|
| 20 mm |
0.11 kg / 107 g
1.0 N
939 Gs
|
0.10 kg / 96 g
0.9 N
~0 Gs
|
| 50 mm |
0.00 kg / 2 g
0.0 N
116 Gs
|
0.00 kg / 0 g
0.0 N
~0 Gs
|
Table 7: Safety (HSE) (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 |
| Mechanical watch | 20 Gs (2.0 mT) | 4.0 cm |
| Phone / Smartphone | 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) - collision effects
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 (Flux)
MW 10x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 4 481 Mx | 44.8 µWb |
| Pc Coefficient | 0.89 | High (Stable) |
Table 11: Physics of underwater searching
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. Vertical hold
*Caution: On a vertical surface, the magnet retains merely ~20% of its nominal pull.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) drastically limits the holding force.
3. Thermal stability
*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) = 0.89
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 |
Other deals
Advantages and disadvantages of neodymium magnets.
Pros
- They have constant strength, and over around ten years their performance decreases symbolically – ~1% (according to theory),
- They show high resistance to demagnetization induced by external magnetic fields,
- By covering with a lustrous layer of nickel, the element has an nice look,
- They feature high magnetic induction at the operating surface, making them more effective,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to freedom in designing and the capacity to customize to client solutions,
- Versatile presence in modern industrial fields – they serve a role in computer drives, electric drive systems, medical devices, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited ability of creating threads in the magnet and complicated forms - recommended is a housing - mounting mechanism.
- Health risk to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these devices can complicate diagnosis medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a base made of mild steel, perfectly concentrating the magnetic field
- with a cross-section of at least 10 mm
- with an ground touching surface
- with zero gap (no impurities)
- for force applied at a right angle (pull-off, not shear)
- in stable room temperature
Impact of factors on magnetic holding capacity in practice
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Direction of force – highest force is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material composition – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
- Base smoothness – the more even the surface, the better the adhesion and stronger the hold. Roughness creates an air distance.
- Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.
Warnings
This is not a toy
Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep out of reach of children and animals.
Protective goggles
Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.
Machining danger
Powder produced during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Pinching danger
Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Be careful!
Compass and GPS
Be aware: neodymium magnets produce a field that interferes with sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.
Thermal limits
Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.
Handling rules
Use magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their force.
Protect data
Do not bring magnets close to a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.
Medical interference
For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Avoid contact if allergic
Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness happens, immediately stop handling magnets and wear gloves.
