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
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Technical details - 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 |
Physical simulation of the magnet - data
The following data represent the result of a mathematical calculation. Results rely on models for the class Nd2Fe14B. Actual performance might slightly differ from theoretical values. Treat these calculations as a preliminary roadmap during assembly planning.
Table 1: Static pull force (pull 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
|
warning |
| 1 mm |
2609 Gs
260.9 mT
|
8.85 kg / 19.50 pounds
8846.4 g / 86.8 N
|
warning |
| 2 mm |
2420 Gs
242.0 mT
|
7.61 kg / 16.78 pounds
7609.6 g / 74.7 N
|
warning |
| 3 mm |
2216 Gs
221.6 mT
|
6.38 kg / 14.07 pounds
6383.0 g / 62.6 N
|
warning |
| 5 mm |
1805 Gs
180.5 mT
|
4.23 kg / 9.33 pounds
4233.2 g / 41.5 N
|
warning |
| 10 mm |
991 Gs
99.1 mT
|
1.28 kg / 2.81 pounds
1275.9 g / 12.5 N
|
weak grip |
| 15 mm |
542 Gs
54.2 mT
|
0.38 kg / 0.84 pounds
381.4 g / 3.7 N
|
weak grip |
| 20 mm |
313 Gs
31.3 mT
|
0.13 kg / 0.28 pounds
127.2 g / 1.2 N
|
weak grip |
| 30 mm |
125 Gs
12.5 mT
|
0.02 kg / 0.04 pounds
20.4 g / 0.2 N
|
weak grip |
| 50 mm |
34 Gs
3.4 mT
|
0.00 kg / 0.00 pounds
1.5 g / 0.0 N
|
weak grip |
Table 2: Sliding capacity (wall)
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: Vertical assembly (shearing) - behavior on slippery surfaces
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) - power losses
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) - resistance threshold
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: Two magnets (attraction) - field range
MW 24x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (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) (electronics) - 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 |
| Phone / Smartphone | 40 Gs (4.0 mT) | 5.0 cm |
| Remote | 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 (kinetic energy) - 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: Coating parameters (durability)
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: Physics of underwater searching
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. Sliding resistance
*Caution: On a vertical surface, the magnet retains just a fraction of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. 0.5mm PC case) drastically limits the holding force.
3. Temperature resistance
*For standard magnets, the safety 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.
Material specification
| 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 |
Other products
Pros as well as cons of neodymium magnets.
Benefits
- They retain attractive force for nearly 10 years – the drop is just ~1% (in theory),
- They retain their magnetic properties even under external field action,
- The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnets are characterized by exceptionally strong magnetic induction on the working surface,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Thanks to versatility in shaping and the ability to adapt to specific needs,
- Universal use in future technologies – they find application in hard drives, electromotive mechanisms, medical equipment, as well as technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in compact constructions
Cons
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We suggest cover - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
- Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these products can complicate diagnosis medical after entering the body.
- With budget limitations the cost of neodymium magnets is a challenge,
Pull force analysis
Maximum magnetic pulling force – what affects it?
- with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- whose transverse dimension equals approx. 10 mm
- with an ideally smooth touching surface
- without any clearance between the magnet and steel
- under perpendicular force direction (90-degree angle)
- in temp. approx. 20°C
Practical lifting capacity: influencing factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Plate material – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and holding force.
- Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
- Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the holding force.
Safe handling of neodymium magnets
Protective goggles
Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Phone sensors
Navigation devices and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.
Nickel allergy
Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. If you have an allergy, refrain from direct skin contact or select coated magnets.
Machining danger
Machining of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Medical interference
Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Keep away from children
Always store magnets out of reach of children. Risk of swallowing is high, and the effects of magnets connecting inside the body are fatal.
Serious injuries
Risk of injury: The pulling power is so immense that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.
Keep away from computers
Do not bring magnets close to a wallet, computer, or screen. The magnetism can permanently damage these devices and wipe information from cards.
Handling rules
Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
Do not overheat magnets
Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and strength.
