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
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Technical data - 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 |
Physical modeling of the assembly - report
Presented information constitute the result of a mathematical analysis. Results were calculated on models for the material Nd2Fe14B. Real-world conditions might slightly deviate from the simulation results. Please consider these calculations as a reference point for designers.
Table 1: Static force (pull vs gap) - characteristics
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
|
warning |
| 1 mm |
4072 Gs
407.2 mT
|
6.60 kg / 14.56 lbs
6603.5 g / 64.8 N
|
warning |
| 2 mm |
3510 Gs
351.0 mT
|
4.91 kg / 10.82 lbs
4906.8 g / 48.1 N
|
warning |
| 3 mm |
2982 Gs
298.2 mT
|
3.54 kg / 7.80 lbs
3540.1 g / 34.7 N
|
warning |
| 5 mm |
2097 Gs
209.7 mT
|
1.75 kg / 3.86 lbs
1751.1 g / 17.2 N
|
weak grip |
| 10 mm |
873 Gs
87.3 mT
|
0.30 kg / 0.67 lbs
303.3 g / 3.0 N
|
weak grip |
| 15 mm |
411 Gs
41.1 mT
|
0.07 kg / 0.15 lbs
67.3 g / 0.7 N
|
weak grip |
| 20 mm |
220 Gs
22.0 mT
|
0.02 kg / 0.04 lbs
19.3 g / 0.2 N
|
weak grip |
| 30 mm |
83 Gs
8.3 mT
|
0.00 kg / 0.01 lbs
2.7 g / 0.0 N
|
weak grip |
| 50 mm |
22 Gs
2.2 mT
|
0.00 kg / 0.00 lbs
0.2 g / 0.0 N
|
weak grip |
Table 2: Vertical 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: Vertical assembly (sliding) - 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: Steel thickness (substrate influence) - 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 (material behavior) - resistance threshold
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: Two magnets (repulsion) - forces in the system
MW 16x9 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (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: Hazards (implants) - warnings
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 |
| Mechanical watch | 20 Gs (2.0 mT) | 5.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 4.0 cm |
| Remote | 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 (kinetic energy) - collision effects
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: Corrosion resistance
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: Electrical 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: Submerged application
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. Shear force
*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) significantly limits the holding force.
3. Heat tolerance
*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) = 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths as well as weaknesses of neodymium magnets.
Strengths
- They retain magnetic properties for almost ten years – the loss is just ~1% (in theory),
- They possess excellent resistance to magnetism drop as a result of external fields,
- By using a lustrous layer of silver, the element has an proper look,
- Magnetic induction on the working layer of the magnet turns out to be extremely intense,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to versatility in shaping and the ability to modify to unusual requirements,
- Significant place in high-tech industry – they are utilized in HDD drives, electric motors, medical devices, and modern systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and 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 resistant to moisture
- Limited ability of creating nuts in the magnet and complicated shapes - recommended is a housing - magnet mounting.
- Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small components of these magnets can be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what affects it?
- with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
- whose thickness reaches at least 10 mm
- with a plane free of scratches
- with direct contact (no impurities)
- during detachment in a direction vertical to the mounting surface
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of nominal force).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
- Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.
H&S for magnets
Pinching danger
Large magnets can crush fingers instantly. Do not place your hand betwixt two strong magnets.
Power loss in heat
Avoid heat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).
Compass and GPS
Be aware: rare earth magnets produce a field that confuses precision electronics. Keep a safe distance from your mobile, tablet, and GPS.
Risk of cracking
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets leads to them cracking into small pieces.
Swallowing risk
Absolutely keep magnets out of reach of children. Ingestion danger is high, and the consequences of magnets clamping inside the body are life-threatening.
Allergic reactions
It is widely known that nickel (the usual finish) is a strong allergen. For allergy sufferers, prevent touching magnets with bare hands and choose versions in plastic housing.
Medical implants
For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.
Fire risk
Mechanical processing of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Protect data
Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
Handling guide
Handle magnets consciously. Their immense force can surprise even professionals. Plan your moves and respect their power.
