MW 5x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010083
GTIN/EAN: 5906301810827
Diameter Ø
5 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
1.47 g
Magnetization Direction
↑ axial
Load capacity
0.56 kg / 5.45 N
Magnetic Induction
599.97 mT / 6000 Gs
Coating
[NiCuNi] Nickel
0.800 ZŁ with VAT / pcs + price for transport
0.650 ZŁ net + 23% VAT / pcs
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Technical of the product - MW 5x10 / N38 - cylindrical magnet
Specification / characteristics - MW 5x10 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010083 |
| GTIN/EAN | 5906301810827 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 10 mm [±0,1 mm] |
| Weight | 1.47 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.56 kg / 5.45 N |
| Magnetic Induction ~ ? | 599.97 mT / 6000 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 product - report
The following information represent the result of a physical calculation. Values were calculated on models for the material Nd2Fe14B. Real-world conditions might slightly differ. Please consider these calculations as a reference point during assembly planning.
Table 1: Static force (force vs gap) - power drop
MW 5x10 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
5990 Gs
599.0 mT
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
weak grip |
| 1 mm |
3743 Gs
374.3 mT
|
0.22 kg / 0.48 lbs
218.7 g / 2.1 N
|
weak grip |
| 2 mm |
2197 Gs
219.7 mT
|
0.08 kg / 0.17 lbs
75.3 g / 0.7 N
|
weak grip |
| 3 mm |
1325 Gs
132.5 mT
|
0.03 kg / 0.06 lbs
27.4 g / 0.3 N
|
weak grip |
| 5 mm |
570 Gs
57.0 mT
|
0.01 kg / 0.01 lbs
5.1 g / 0.0 N
|
weak grip |
| 10 mm |
137 Gs
13.7 mT
|
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
|
weak grip |
| 15 mm |
54 Gs
5.4 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
26 Gs
2.6 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
9 Gs
0.9 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
weak grip |
Table 2: Slippage capacity (vertical surface)
MW 5x10 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.11 kg / 0.25 lbs
112.0 g / 1.1 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 0.10 lbs
44.0 g / 0.4 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 lbs
16.0 g / 0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.01 lbs
6.0 g / 0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
2.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 lbs
0.0 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 5x10 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.17 kg / 0.37 lbs
168.0 g / 1.6 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.11 kg / 0.25 lbs
112.0 g / 1.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.06 kg / 0.12 lbs
56.0 g / 0.5 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.28 kg / 0.62 lbs
280.0 g / 2.7 N
|
Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 5x10 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.06 kg / 0.12 lbs
56.0 g / 0.5 N
|
| 1 mm |
|
0.14 kg / 0.31 lbs
140.0 g / 1.4 N
|
| 2 mm |
|
0.28 kg / 0.62 lbs
280.0 g / 2.7 N
|
| 3 mm |
|
0.42 kg / 0.93 lbs
420.0 g / 4.1 N
|
| 5 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
| 10 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
| 11 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
| 12 mm |
|
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
Table 5: Thermal resistance (stability) - power drop
MW 5x10 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.56 kg / 1.23 lbs
560.0 g / 5.5 N
|
OK |
| 40 °C | -2.2% |
0.55 kg / 1.21 lbs
547.7 g / 5.4 N
|
OK |
| 60 °C | -4.4% |
0.54 kg / 1.18 lbs
535.4 g / 5.3 N
|
OK |
| 80 °C | -6.6% |
0.52 kg / 1.15 lbs
523.0 g / 5.1 N
|
|
| 100 °C | -28.8% |
0.40 kg / 0.88 lbs
398.7 g / 3.9 N
|
Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 5x10 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
4.34 kg / 9.58 lbs
6 127 Gs
|
0.65 kg / 1.44 lbs
652 g / 6.4 N
|
N/A |
| 1 mm |
2.81 kg / 6.19 lbs
9 631 Gs
|
0.42 kg / 0.93 lbs
421 g / 4.1 N
|
2.53 kg / 5.57 lbs
~0 Gs
|
| 2 mm |
1.70 kg / 3.74 lbs
7 486 Gs
|
0.25 kg / 0.56 lbs
254 g / 2.5 N
|
1.53 kg / 3.37 lbs
~0 Gs
|
| 3 mm |
1.00 kg / 2.20 lbs
5 737 Gs
|
0.15 kg / 0.33 lbs
149 g / 1.5 N
|
0.90 kg / 1.98 lbs
~0 Gs
|
| 5 mm |
0.35 kg / 0.77 lbs
3 391 Gs
|
0.05 kg / 0.12 lbs
52 g / 0.5 N
|
0.31 kg / 0.69 lbs
~0 Gs
|
| 10 mm |
0.04 kg / 0.09 lbs
1 140 Gs
|
0.01 kg / 0.01 lbs
6 g / 0.1 N
|
0.04 kg / 0.08 lbs
~0 Gs
|
| 20 mm |
0.00 kg / 0.01 lbs
274 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
30 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 lbs
19 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 lbs
12 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 lbs
9 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
6 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
5 Gs
|
0.00 kg / 0.00 lbs
0 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
Table 7: Hazards (implants) - precautionary measures
MW 5x10 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 4.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 3.0 cm |
| Timepiece | 20 Gs (2.0 mT) | 2.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 2.0 cm |
| Car key | 50 Gs (5.0 mT) | 2.0 cm |
| Payment card | 400 Gs (40.0 mT) | 1.0 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Dynamics (cracking risk) - warning
MW 5x10 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
19.69 km/h
(5.47 m/s)
|
0.02 J | |
| 30 mm |
34.09 km/h
(9.47 m/s)
|
0.07 J | |
| 50 mm |
44.02 km/h
(12.23 m/s)
|
0.11 J | |
| 100 mm |
62.25 km/h
(17.29 m/s)
|
0.22 J |
Table 9: Coating parameters (durability)
MW 5x10 / 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 (Pc)
MW 5x10 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 306 Mx | 13.1 µWb |
| Pc Coefficient | 1.21 | High (Stable) |
Table 11: Underwater work (magnet fishing)
MW 5x10 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.56 kg | Standard |
| Water (riverbed) |
0.64 kg
(+0.08 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Note: On a vertical wall, the magnet retains merely ~20% of its perpendicular strength.
2. Steel saturation
*Thin metal sheet (e.g. computer case) drastically weakens the holding force.
3. Temperature resistance
*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) = 1.21
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 |
Other deals
Pros as well as cons of neodymium magnets.
Benefits
- They retain attractive force for almost 10 years – the loss is just ~1% (in theory),
- They retain their magnetic properties even under external field action,
- In other words, due to the smooth surface of gold, the element gains visual value,
- Magnets have excellent magnetic induction on the outer side,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Due to the possibility of flexible forming and customization to individualized requirements, magnetic components can be created in a broad palette of forms and dimensions, which makes them more universal,
- Key role in electronics industry – they are commonly used in mass storage devices, electric drive systems, precision medical tools, as well as industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in miniature devices
Weaknesses
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- We suggest cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated forms.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Additionally, small elements of these devices can be problematic in diagnostics medical when they are in the body.
- Due to expensive raw materials, their price is higher than average,
Holding force characteristics
Detachment force of the magnet in optimal conditions – what contributes to it?
- using a sheet made of low-carbon steel, serving as a ideal flux conductor
- with a cross-section minimum 10 mm
- with an ground contact surface
- with direct contact (no coatings)
- during detachment in a direction perpendicular to the mounting surface
- in temp. approx. 20°C
Determinants of lifting force in real conditions
- Air gap (betwixt the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
- Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Metal type – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
- Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Safe handling of neodymium magnets
Danger to the youngest
Product intended for adults. Small elements can be swallowed, causing severe trauma. Keep away from children and animals.
Safe operation
Use magnets with awareness. Their huge power can surprise even professionals. Be vigilant and respect their power.
Implant safety
Life threat: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
Magnet fragility
Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Maximum temperature
Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. The loss of strength is permanent.
Compass and GPS
Navigation devices and mobile phones are highly sensitive to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Sensitization to coating
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness appears, cease handling magnets and use protective gear.
Threat to electronics
Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Dust explosion hazard
Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.
Crushing force
Pinching hazard: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.
