MW 24x6 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010048
GTIN/EAN: 5906301810476
Diameter Ø
24 mm [±0,1 mm]
Height
6 mm [±0,1 mm]
Weight
20.36 g
Magnetization Direction
↑ axial
Load capacity
9.98 kg / 97.88 N
Magnetic Induction
277.18 mT / 2772 Gs
Coating
[Zn] Zinc
5.10 ZŁ with VAT / pcs + price for transport
4.15 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - MW 24x6 / N38 - cylindrical magnet
Specification / characteristics - MW 24x6 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010048 |
| GTIN/EAN | 5906301810476 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 24 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 20.36 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 9.98 kg / 97.88 N |
| Magnetic Induction ~ ? | 277.18 mT / 2772 Gs |
| Coating | [Zn] Zinc |
| 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 analysis of the magnet - technical parameters
These values constitute the direct effect of a engineering analysis. Values are based on models for the material Nd2Fe14B. Actual parameters may differ from theoretical values. Use these data as a reference point when designing systems.
Table 1: Static force (force vs distance) - interaction chart
MW 24x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2771 Gs
277.1 mT
|
9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
|
medium risk |
| 1 mm |
2609 Gs
260.9 mT
|
8.85 kg / 19.50 pounds
8846.4 g / 86.8 N
|
medium risk |
| 2 mm |
2420 Gs
242.0 mT
|
7.61 kg / 16.78 pounds
7609.6 g / 74.7 N
|
medium risk |
| 3 mm |
2216 Gs
221.6 mT
|
6.38 kg / 14.07 pounds
6383.0 g / 62.6 N
|
medium risk |
| 5 mm |
1805 Gs
180.5 mT
|
4.23 kg / 9.33 pounds
4233.2 g / 41.5 N
|
medium risk |
| 10 mm |
991 Gs
99.1 mT
|
1.28 kg / 2.81 pounds
1275.9 g / 12.5 N
|
safe |
| 15 mm |
542 Gs
54.2 mT
|
0.38 kg / 0.84 pounds
381.4 g / 3.7 N
|
safe |
| 20 mm |
313 Gs
31.3 mT
|
0.13 kg / 0.28 pounds
127.2 g / 1.2 N
|
safe |
| 30 mm |
125 Gs
12.5 mT
|
0.02 kg / 0.04 pounds
20.4 g / 0.2 N
|
safe |
| 50 mm |
34 Gs
3.4 mT
|
0.00 kg / 0.00 pounds
1.5 g / 0.0 N
|
safe |
Table 2: Slippage capacity (vertical surface)
MW 24x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
2.00 kg / 4.40 pounds
1996.0 g / 19.6 N
|
| 1 mm | Stal (~0.2) |
1.77 kg / 3.90 pounds
1770.0 g / 17.4 N
|
| 2 mm | Stal (~0.2) |
1.52 kg / 3.36 pounds
1522.0 g / 14.9 N
|
| 3 mm | Stal (~0.2) |
1.28 kg / 2.81 pounds
1276.0 g / 12.5 N
|
| 5 mm | Stal (~0.2) |
0.85 kg / 1.87 pounds
846.0 g / 8.3 N
|
| 10 mm | Stal (~0.2) |
0.26 kg / 0.56 pounds
256.0 g / 2.5 N
|
| 15 mm | Stal (~0.2) |
0.08 kg / 0.17 pounds
76.0 g / 0.7 N
|
| 20 mm | Stal (~0.2) |
0.03 kg / 0.06 pounds
26.0 g / 0.3 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
Table 3: Wall mounting (shearing) - vertical pull
MW 24x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.99 kg / 6.60 pounds
2994.0 g / 29.4 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
2.00 kg / 4.40 pounds
1996.0 g / 19.6 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
1.00 kg / 2.20 pounds
998.0 g / 9.8 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
4.99 kg / 11.00 pounds
4990.0 g / 49.0 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MW 24x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
1.00 kg / 2.20 pounds
998.0 g / 9.8 N
|
| 1 mm |
|
2.50 kg / 5.50 pounds
2495.0 g / 24.5 N
|
| 2 mm |
|
4.99 kg / 11.00 pounds
4990.0 g / 49.0 N
|
| 3 mm |
|
7.49 kg / 16.50 pounds
7485.0 g / 73.4 N
|
| 5 mm |
|
9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
|
| 10 mm |
|
9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
|
| 11 mm |
|
9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
|
| 12 mm |
|
9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
|
Table 5: Thermal stability (stability) - thermal limit
MW 24x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
9.98 kg / 22.00 pounds
9980.0 g / 97.9 N
|
OK |
| 40 °C | -2.2% |
9.76 kg / 21.52 pounds
9760.4 g / 95.7 N
|
OK |
| 60 °C | -4.4% |
9.54 kg / 21.03 pounds
9540.9 g / 93.6 N
|
|
| 80 °C | -6.6% |
9.32 kg / 20.55 pounds
9321.3 g / 91.4 N
|
|
| 100 °C | -28.8% |
7.11 kg / 15.67 pounds
7105.8 g / 69.7 N
|
Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 24x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Sliding Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
21.42 kg / 47.22 pounds
4 381 Gs
|
3.21 kg / 7.08 pounds
3213 g / 31.5 N
|
N/A |
| 1 mm |
20.25 kg / 44.65 pounds
5 390 Gs
|
3.04 kg / 6.70 pounds
3038 g / 29.8 N
|
18.23 kg / 40.19 pounds
~0 Gs
|
| 2 mm |
18.99 kg / 41.86 pounds
5 218 Gs
|
2.85 kg / 6.28 pounds
2848 g / 27.9 N
|
17.09 kg / 37.67 pounds
~0 Gs
|
| 3 mm |
17.67 kg / 38.95 pounds
5 034 Gs
|
2.65 kg / 5.84 pounds
2650 g / 26.0 N
|
15.90 kg / 35.06 pounds
~0 Gs
|
| 5 mm |
15.00 kg / 33.07 pounds
4 638 Gs
|
2.25 kg / 4.96 pounds
2250 g / 22.1 N
|
13.50 kg / 29.76 pounds
~0 Gs
|
| 10 mm |
9.09 kg / 20.03 pounds
3 610 Gs
|
1.36 kg / 3.00 pounds
1363 g / 13.4 N
|
8.18 kg / 18.03 pounds
~0 Gs
|
| 20 mm |
2.74 kg / 6.04 pounds
1 982 Gs
|
0.41 kg / 0.91 pounds
411 g / 4.0 N
|
2.46 kg / 5.43 pounds
~0 Gs
|
| 50 mm |
0.10 kg / 0.23 pounds
385 Gs
|
0.02 kg / 0.03 pounds
15 g / 0.2 N
|
0.09 kg / 0.21 pounds
~0 Gs
|
| 60 mm |
0.04 kg / 0.10 pounds
251 Gs
|
0.01 kg / 0.01 pounds
7 g / 0.1 N
|
0.04 kg / 0.09 pounds
~0 Gs
|
| 70 mm |
0.02 kg / 0.04 pounds
171 Gs
|
0.00 kg / 0.01 pounds
3 g / 0.0 N
|
0.02 kg / 0.04 pounds
~0 Gs
|
| 80 mm |
0.01 kg / 0.02 pounds
121 Gs
|
0.00 kg / 0.00 pounds
2 g / 0.0 N
|
0.01 kg / 0.02 pounds
~0 Gs
|
| 90 mm |
0.01 kg / 0.01 pounds
89 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.01 pounds
67 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) - warnings
MW 24x6 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 10.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 8.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 6.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 5.0 cm |
| Car key | 50 Gs (5.0 mT) | 4.5 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 24x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.05 km/h
(6.68 m/s)
|
0.45 J | |
| 30 mm |
38.72 km/h
(10.76 m/s)
|
1.18 J | |
| 50 mm |
49.93 km/h
(13.87 m/s)
|
1.96 J | |
| 100 mm |
70.61 km/h
(19.61 m/s)
|
3.92 J |
Table 9: Corrosion resistance
MW 24x6 / N38
| Technical parameter | Value / Description |
|---|---|
| Coating type | [Zn] Zinc |
| Layer structure | Zn (Zinc) |
| Layer thickness | 8-15 µm |
| Salt spray test (SST) ? | 48 h |
| Recommended environment | Indoors / Garage |
Table 10: Construction data (Pc)
MW 24x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 13 932 Mx | 139.3 µWb |
| Pc Coefficient | 0.35 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 24x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 9.98 kg | Standard |
| Water (riverbed) |
11.43 kg
(+1.45 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical surface, the magnet holds only a fraction of its nominal pull.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) severely weakens the holding force.
3. Power loss vs temp
*For standard magnets, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.35
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 |
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Advantages as well as disadvantages of Nd2Fe14B magnets.
Advantages
- Their magnetic field remains stable, and after approximately 10 years it drops only by ~1% (theoretically),
- They maintain their magnetic properties even under close interference source,
- A magnet with a smooth nickel surface is more attractive,
- They show high magnetic induction at the operating surface, which improves attraction properties,
- 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...
- Possibility of precise forming and optimizing to precise needs,
- Significant place in advanced technology sectors – they are used in magnetic memories, motor assemblies, diagnostic systems, also modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of making nuts in the magnet and complicated shapes - recommended is cover - mounting mechanism.
- Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these devices are able to complicate diagnosis medical in case of swallowing.
- Due to neodymium price, their price is relatively high,
Holding force characteristics
Magnetic strength at its maximum – what it depends on?
- using a plate made of mild steel, serving as a magnetic yoke
- with a cross-section no less than 10 mm
- with a surface free of scratches
- with total lack of distance (without paint)
- for force acting at a right angle (in the magnet axis)
- in stable room temperature
Determinants of practical lifting force of a magnet
- Distance – the presence of foreign body (paint, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of nominal force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Plate material – low-carbon steel gives the best results. Higher carbon content reduce magnetic properties and holding force.
- Smoothness – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate decreases the holding force.
Safety rules for work with NdFeB magnets
Serious injuries
Risk of injury: The attraction force is so great that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
Heat warning
Keep cool. NdFeB magnets are sensitive to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).
Safe operation
Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.
Danger to the youngest
Product intended for adults. Tiny parts pose a choking risk, causing intestinal necrosis. Keep out of reach of kids and pets.
Magnetic interference
Navigation devices and smartphones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.
Fragile material
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Data carriers
Do not bring magnets near a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.
Machining danger
Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Warning for allergy sufferers
It is widely known that nickel (the usual finish) is a strong allergen. For allergy sufferers, refrain from touching magnets with bare hands or select coated magnets.
Pacemakers
Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.
