MW 16x9 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010035
GTIN/EAN: 5906301810346
Diameter Ø
16 mm [±0,1 mm]
Height
9 mm [±0,1 mm]
Weight
13.57 g
Magnetization Direction
↑ axial
Load capacity
8.53 kg / 83.64 N
Magnetic Induction
463.05 mT / 4631 Gs
Coating
[NiCuNi] Nickel
7.36 ZŁ with VAT / pcs + price for transport
5.98 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
otherwise drop us a message through
inquiry form
the contact section.
Specifications as well as appearance of a magnet can be verified with our
power calculator.
Same-day shipping for orders placed before 14:00.
Physical properties - MW 16x9 / N38 - cylindrical magnet
Specification / characteristics - MW 16x9 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010035 |
| GTIN/EAN | 5906301810346 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 16 mm [±0,1 mm] |
| Height | 9 mm [±0,1 mm] |
| Weight | 13.57 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 8.53 kg / 83.64 N |
| Magnetic Induction ~ ? | 463.05 mT / 4631 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 modeling of the assembly - report
The following values represent the result of a physical calculation. Results rely on models for the class Nd2Fe14B. Operational performance may differ from theoretical values. Treat these data as a reference point when designing systems.
Table 1: Static pull force (force vs gap) - power drop
MW 16x9 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
4628 Gs
462.8 mT
|
8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
|
medium risk |
| 1 mm |
4072 Gs
407.2 mT
|
6.60 kg / 14.56 lbs
6603.5 g / 64.8 N
|
medium risk |
| 2 mm |
3510 Gs
351.0 mT
|
4.91 kg / 10.82 lbs
4906.8 g / 48.1 N
|
medium risk |
| 3 mm |
2982 Gs
298.2 mT
|
3.54 kg / 7.80 lbs
3540.1 g / 34.7 N
|
medium risk |
| 5 mm |
2097 Gs
209.7 mT
|
1.75 kg / 3.86 lbs
1751.1 g / 17.2 N
|
safe |
| 10 mm |
873 Gs
87.3 mT
|
0.30 kg / 0.67 lbs
303.3 g / 3.0 N
|
safe |
| 15 mm |
411 Gs
41.1 mT
|
0.07 kg / 0.15 lbs
67.3 g / 0.7 N
|
safe |
| 20 mm |
220 Gs
22.0 mT
|
0.02 kg / 0.04 lbs
19.3 g / 0.2 N
|
safe |
| 30 mm |
83 Gs
8.3 mT
|
0.00 kg / 0.01 lbs
2.7 g / 0.0 N
|
safe |
| 50 mm |
22 Gs
2.2 mT
|
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
|
safe |
Table 2: Slippage hold (wall)
MW 16x9 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
1.71 kg / 3.76 lbs
1706.0 g / 16.7 N
|
| 1 mm | Stal (~0.2) |
1.32 kg / 2.91 lbs
1320.0 g / 12.9 N
|
| 2 mm | Stal (~0.2) |
0.98 kg / 2.16 lbs
982.0 g / 9.6 N
|
| 3 mm | Stal (~0.2) |
0.71 kg / 1.56 lbs
708.0 g / 6.9 N
|
| 5 mm | Stal (~0.2) |
0.35 kg / 0.77 lbs
350.0 g / 3.4 N
|
| 10 mm | Stal (~0.2) |
0.06 kg / 0.13 lbs
60.0 g / 0.6 N
|
| 15 mm | Stal (~0.2) |
0.01 kg / 0.03 lbs
14.0 g / 0.1 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.01 lbs
4.0 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: Wall mounting (shearing) - behavior on slippery surfaces
MW 16x9 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.56 kg / 5.64 lbs
2559.0 g / 25.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
1.71 kg / 3.76 lbs
1706.0 g / 16.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.85 kg / 1.88 lbs
853.0 g / 8.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
4.27 kg / 9.40 lbs
4265.0 g / 41.8 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MW 16x9 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.85 kg / 1.88 lbs
853.0 g / 8.4 N
|
| 1 mm |
|
2.13 kg / 4.70 lbs
2132.5 g / 20.9 N
|
| 2 mm |
|
4.27 kg / 9.40 lbs
4265.0 g / 41.8 N
|
| 3 mm |
|
6.40 kg / 14.10 lbs
6397.5 g / 62.8 N
|
| 5 mm |
|
8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
|
| 10 mm |
|
8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
|
| 11 mm |
|
8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
|
| 12 mm |
|
8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
|
Table 5: Thermal resistance (stability) - power drop
MW 16x9 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
8.53 kg / 18.81 lbs
8530.0 g / 83.7 N
|
OK |
| 40 °C | -2.2% |
8.34 kg / 18.39 lbs
8342.3 g / 81.8 N
|
OK |
| 60 °C | -4.4% |
8.15 kg / 17.98 lbs
8154.7 g / 80.0 N
|
OK |
| 80 °C | -6.6% |
7.97 kg / 17.56 lbs
7967.0 g / 78.2 N
|
|
| 100 °C | -28.8% |
6.07 kg / 13.39 lbs
6073.4 g / 59.6 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 16x9 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
26.55 kg / 58.54 lbs
5 658 Gs
|
3.98 kg / 8.78 lbs
3983 g / 39.1 N
|
N/A |
| 1 mm |
23.52 kg / 51.85 lbs
8 711 Gs
|
3.53 kg / 7.78 lbs
3528 g / 34.6 N
|
21.17 kg / 46.66 lbs
~0 Gs
|
| 2 mm |
20.56 kg / 45.32 lbs
8 145 Gs
|
3.08 kg / 6.80 lbs
3084 g / 30.2 N
|
18.50 kg / 40.79 lbs
~0 Gs
|
| 3 mm |
17.80 kg / 39.23 lbs
7 578 Gs
|
2.67 kg / 5.89 lbs
2669 g / 26.2 N
|
16.02 kg / 35.31 lbs
~0 Gs
|
| 5 mm |
13.01 kg / 28.69 lbs
6 481 Gs
|
1.95 kg / 4.30 lbs
1952 g / 19.2 N
|
11.71 kg / 25.82 lbs
~0 Gs
|
| 10 mm |
5.45 kg / 12.02 lbs
4 194 Gs
|
0.82 kg / 1.80 lbs
818 g / 8.0 N
|
4.91 kg / 10.82 lbs
~0 Gs
|
| 20 mm |
0.94 kg / 2.08 lbs
1 746 Gs
|
0.14 kg / 0.31 lbs
142 g / 1.4 N
|
0.85 kg / 1.87 lbs
~0 Gs
|
| 50 mm |
0.02 kg / 0.05 lbs
260 Gs
|
0.00 kg / 0.01 lbs
3 g / 0.0 N
|
0.02 kg / 0.04 lbs
~0 Gs
|
| 60 mm |
0.01 kg / 0.02 lbs
166 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 70 mm |
0.00 kg / 0.01 lbs
112 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 lbs
79 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
58 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
43 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) - precautionary measures
MW 16x9 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 8.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 7.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 5.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 4.0 cm |
| Car key | 50 Gs (5.0 mT) | 4.0 cm |
| Payment card | 400 Gs (40.0 mT) | 2.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 1.5 cm |
Table 8: Impact energy (cracking risk) - warning
MW 16x9 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.84 km/h
(7.18 m/s)
|
0.35 J | |
| 30 mm |
43.80 km/h
(12.17 m/s)
|
1.00 J | |
| 50 mm |
56.54 km/h
(15.71 m/s)
|
1.67 J | |
| 100 mm |
79.96 km/h
(22.21 m/s)
|
3.35 J |
Table 9: Surface protection spec
MW 16x9 / 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 16x9 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 9 394 Mx | 93.9 µWb |
| Pc Coefficient | 0.63 | High (Stable) |
Table 11: Hydrostatics and buoyancy
MW 16x9 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 8.53 kg | Standard |
| Water (riverbed) |
9.77 kg
(+1.24 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Warning: On a vertical surface, the magnet holds only a fraction of its max power.
2. Steel saturation
*Thin metal sheet (e.g. computer case) severely limits the holding force.
3. Power loss vs temp
*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) = 0.63
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Strengths and weaknesses of Nd2Fe14B magnets.
Benefits
- They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
- They maintain their magnetic properties even under strong external field,
- The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets create maximum magnetic induction on a small area, which increases force concentration,
- 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 flexibility in designing and the ability to adapt to complex applications,
- Key role in electronics industry – they serve a role in magnetic memories, electromotive mechanisms, advanced medical instruments, also technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Cons
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its 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.
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Due to limitations in creating nuts and complex shapes in magnets, we propose using casing - magnetic holder.
- Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
- Due to complex production process, their price exceeds standard values,
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a plate made of mild steel, perfectly concentrating the magnetic field
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an ideally smooth contact surface
- without any clearance between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- in neutral thermal conditions
What influences lifting capacity in practice
- Gap (between the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
- Load vector – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
- Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the power to be wasted into the air.
- Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
- Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate reduces the load capacity.
Warnings
Heat warning
Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.
Conscious usage
Be careful. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can react.
Hand protection
Large magnets can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.
Protect data
Powerful magnetic fields can erase data on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
GPS and phone interference
Be aware: neodymium magnets produce a field that interferes with sensitive sensors. Maintain a safe distance from your mobile, device, and GPS.
Allergic reactions
A percentage of the population have a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching can result in dermatitis. It is best to wear safety gloves.
Pacemakers
People with a ICD should maintain an large gap from magnets. The magnetism can disrupt the operation of the life-saving device.
Swallowing risk
Neodymium magnets are not suitable for play. Accidental ingestion of several magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates urgent medical intervention.
Fire warning
Machining of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Fragile material
Protect your eyes. Magnets can fracture upon violent connection, ejecting shards into the air. We recommend safety glasses.
