MW 16x3 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010033
GTIN/EAN: 5906301810322
Diameter Ø
16 mm [±0,1 mm]
Height
3 mm [±0,1 mm]
Weight
4.52 g
Magnetization Direction
↑ axial
Load capacity
2.97 kg / 29.11 N
Magnetic Induction
217.61 mT / 2176 Gs
Coating
[NiCuNi] Nickel
1.734 ZŁ with VAT / pcs + price for transport
1.410 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
otherwise drop us a message using
inquiry form
through our site.
Specifications along with appearance of magnetic components can be analyzed on our
power calculator.
Order by 14:00 and we’ll ship today!
Technical data - MW 16x3 / N38 - cylindrical magnet
Specification / characteristics - MW 16x3 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010033 |
| GTIN/EAN | 5906301810322 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 16 mm [±0,1 mm] |
| Height | 3 mm [±0,1 mm] |
| Weight | 4.52 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 2.97 kg / 29.11 N |
| Magnetic Induction ~ ? | 217.61 mT / 2176 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 simulation of the magnet - technical parameters
The following values represent the outcome of a engineering analysis. Values were calculated on models for the class Nd2Fe14B. Real-world performance may deviate from the simulation results. Use these calculations as a supplementary guide when designing systems.
Table 1: Static force (pull vs distance) - power drop
MW 16x3 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2176 Gs
217.6 mT
|
2.97 kg / 6.55 pounds
2970.0 g / 29.1 N
|
strong |
| 1 mm |
2004 Gs
200.4 mT
|
2.52 kg / 5.55 pounds
2519.3 g / 24.7 N
|
strong |
| 2 mm |
1782 Gs
178.2 mT
|
1.99 kg / 4.39 pounds
1993.2 g / 19.6 N
|
weak grip |
| 3 mm |
1543 Gs
154.3 mT
|
1.49 kg / 3.29 pounds
1494.0 g / 14.7 N
|
weak grip |
| 5 mm |
1098 Gs
109.8 mT
|
0.76 kg / 1.67 pounds
756.6 g / 7.4 N
|
weak grip |
| 10 mm |
439 Gs
43.9 mT
|
0.12 kg / 0.27 pounds
120.9 g / 1.2 N
|
weak grip |
| 15 mm |
195 Gs
19.5 mT
|
0.02 kg / 0.05 pounds
23.9 g / 0.2 N
|
weak grip |
| 20 mm |
99 Gs
9.9 mT
|
0.01 kg / 0.01 pounds
6.2 g / 0.1 N
|
weak grip |
| 30 mm |
35 Gs
3.5 mT
|
0.00 kg / 0.00 pounds
0.8 g / 0.0 N
|
weak grip |
| 50 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding capacity (vertical surface)
MW 16x3 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.59 kg / 1.31 pounds
594.0 g / 5.8 N
|
| 1 mm | Stal (~0.2) |
0.50 kg / 1.11 pounds
504.0 g / 4.9 N
|
| 2 mm | Stal (~0.2) |
0.40 kg / 0.88 pounds
398.0 g / 3.9 N
|
| 3 mm | Stal (~0.2) |
0.30 kg / 0.66 pounds
298.0 g / 2.9 N
|
| 5 mm | Stal (~0.2) |
0.15 kg / 0.34 pounds
152.0 g / 1.5 N
|
| 10 mm | Stal (~0.2) |
0.02 kg / 0.05 pounds
24.0 g / 0.2 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
2.0 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: Vertical assembly (sliding) - behavior on slippery surfaces
MW 16x3 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.89 kg / 1.96 pounds
891.0 g / 8.7 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.59 kg / 1.31 pounds
594.0 g / 5.8 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.30 kg / 0.65 pounds
297.0 g / 2.9 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
1.49 kg / 3.27 pounds
1485.0 g / 14.6 N
|
Table 4: Steel thickness (substrate influence) - power losses
MW 16x3 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.30 kg / 0.65 pounds
297.0 g / 2.9 N
|
| 1 mm |
|
0.74 kg / 1.64 pounds
742.5 g / 7.3 N
|
| 2 mm |
|
1.49 kg / 3.27 pounds
1485.0 g / 14.6 N
|
| 3 mm |
|
2.23 kg / 4.91 pounds
2227.5 g / 21.9 N
|
| 5 mm |
|
2.97 kg / 6.55 pounds
2970.0 g / 29.1 N
|
| 10 mm |
|
2.97 kg / 6.55 pounds
2970.0 g / 29.1 N
|
| 11 mm |
|
2.97 kg / 6.55 pounds
2970.0 g / 29.1 N
|
| 12 mm |
|
2.97 kg / 6.55 pounds
2970.0 g / 29.1 N
|
Table 5: Thermal stability (stability) - thermal limit
MW 16x3 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
2.97 kg / 6.55 pounds
2970.0 g / 29.1 N
|
OK |
| 40 °C | -2.2% |
2.90 kg / 6.40 pounds
2904.7 g / 28.5 N
|
OK |
| 60 °C | -4.4% |
2.84 kg / 6.26 pounds
2839.3 g / 27.9 N
|
|
| 80 °C | -6.6% |
2.77 kg / 6.12 pounds
2774.0 g / 27.2 N
|
|
| 100 °C | -28.8% |
2.11 kg / 4.66 pounds
2114.6 g / 20.7 N
|
Table 6: Two magnets (attraction) - forces in the system
MW 16x3 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
5.87 kg / 12.93 pounds
3 716 Gs
|
0.88 kg / 1.94 pounds
880 g / 8.6 N
|
N/A |
| 1 mm |
5.46 kg / 12.03 pounds
4 197 Gs
|
0.82 kg / 1.80 pounds
819 g / 8.0 N
|
4.91 kg / 10.83 pounds
~0 Gs
|
| 2 mm |
4.98 kg / 10.97 pounds
4 007 Gs
|
0.75 kg / 1.65 pounds
746 g / 7.3 N
|
4.48 kg / 9.87 pounds
~0 Gs
|
| 3 mm |
4.46 kg / 9.83 pounds
3 794 Gs
|
0.67 kg / 1.48 pounds
669 g / 6.6 N
|
4.01 kg / 8.85 pounds
~0 Gs
|
| 5 mm |
3.43 kg / 7.56 pounds
3 326 Gs
|
0.51 kg / 1.13 pounds
514 g / 5.0 N
|
3.09 kg / 6.80 pounds
~0 Gs
|
| 10 mm |
1.49 kg / 3.30 pounds
2 196 Gs
|
0.22 kg / 0.49 pounds
224 g / 2.2 N
|
1.35 kg / 2.97 pounds
~0 Gs
|
| 20 mm |
0.24 kg / 0.53 pounds
878 Gs
|
0.04 kg / 0.08 pounds
36 g / 0.4 N
|
0.21 kg / 0.47 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.01 pounds
113 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
70 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
46 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
32 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
23 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
17 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Safety (HSE) (implants) - precautionary measures
MW 16x3 / 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 |
| 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: Impact energy (kinetic energy) - collision effects
MW 16x3 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
26.50 km/h
(7.36 m/s)
|
0.12 J | |
| 30 mm |
44.78 km/h
(12.44 m/s)
|
0.35 J | |
| 50 mm |
57.81 km/h
(16.06 m/s)
|
0.58 J | |
| 100 mm |
81.75 km/h
(22.71 m/s)
|
1.17 J |
Table 9: Anti-corrosion coating durability
MW 16x3 / 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 16x3 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 5 141 Mx | 51.4 µWb |
| Pc Coefficient | 0.27 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 16x3 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 2.97 kg | Standard |
| Water (riverbed) |
3.40 kg
(+0.43 kg buoyancy gain)
|
+14.5% |
1. Wall mount (shear)
*Caution: On a vertical wall, the magnet retains merely ~20% of its perpendicular strength.
2. Steel thickness impact
*Thin metal sheet (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Power loss vs temp
*For N38 material, the safety limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.27
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.
Elemental analysis
| 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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View more offers
Advantages as well as disadvantages of rare earth magnets.
Strengths
- They do not lose magnetism, even after approximately ten years – the reduction in power is only ~1% (based on measurements),
- They are extremely resistant to demagnetization induced by external field influence,
- Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an professional appearance,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Thanks to modularity in shaping and the capacity to customize to client solutions,
- Key role in electronics industry – they are utilized in magnetic memories, electric motors, diagnostic systems, and multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited possibility of creating nuts in the magnet and complex shapes - recommended is cover - magnetic holder.
- Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum holding power of the magnet – what it depends on?
- on a plate made of mild steel, effectively closing the magnetic flux
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an ground touching surface
- with zero gap (without impurities)
- during detachment in a direction perpendicular to the plane
- at temperature approx. 20 degrees Celsius
What influences lifting capacity in practice
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Steel grade – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
- Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal reduce efficiency.
- Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was measured by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate reduces the load capacity.
Safety rules for work with NdFeB magnets
Danger to pacemakers
Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetism can disrupt the functioning of the implant.
Metal Allergy
Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease working with magnets and wear gloves.
Power loss in heat
Keep cool. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, look for HT versions (H, SH, UH).
Caution required
Be careful. Neodymium magnets attract from a distance and connect with huge force, often quicker than you can react.
Fire risk
Machining of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Magnet fragility
NdFeB magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them cracking into shards.
Impact on smartphones
Be aware: neodymium magnets generate a field that disrupts sensitive sensors. Maintain a safe distance from your phone, tablet, and navigation systems.
Protect data
Very strong magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Stay away of min. 10 cm.
Bone fractures
Big blocks can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Adults only
These products are not intended for children. Swallowing multiple magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and requires immediate surgery.
