MW 22x6 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010047
GTIN/EAN: 5906301810469
- Diameter Ø
- 22 mm [±0,1 mm]
- Height
- 6 mm [±0,1 mm]
- Weight
- 17.11 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
4.97 zł net / pcs
6.11 zł with VAT (23% VAT) / pcs
bulk discounts:
Need more?Frequently asked questions
What is the maximum working temperature of a disc magnet?
What is the difference between N38, N42 and N52?
What is the dimensional tolerance?
Engineering report for this magnet
Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.
Call us now
+48 888 99 98 98
alternatively let us know using
contact form
the contact section.
Specifications and structure of a neodymium magnet can be estimated using our
power calculator.
Order by 14:00 and we’ll ship today!
Technical - MW 22x6 / N38 - cylindrical magnet
Specification / characteristics - MW 22x6 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010047 |
| GTIN/EAN | 5906301810469 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 22 mm [±0,1 mm] |
| Height | 6 mm [±0,1 mm] |
| Weight | 17.11 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 9.33 kg / 91.51 N |
| Magnetic Induction ~ ? | 296.78 mT / 2968 Gs |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±0.1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| Remanence Br ? | 12.2-12.6 | kGs |
| Remanence Br ? | 1220-1260 | mT |
| Coercivity bHc ? | 10.8-11.5 | kOe |
| Coercivity bHc ? | 860-915 | kA/m |
| Intrinsic coercivity iHc | ≥ 12 | kOe |
| Intrinsic coercivity iHc | ≥ 955 | kA/m |
| Energy product BHmax ? | 36-38 | BH max MGOe |
| Energy product BHmax ? | 287-303 | BH max KJ/m |
| Maximum working 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 | 310 | °C |
| Curie Temperature TF | 590 | °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 |
Technical simulation of the magnet - technical parameters
These information constitute the outcome of a engineering simulation. Results were calculated on algorithms for the material Nd2Fe14B. Operational performance may differ. Use these calculations as a preliminary roadmap when designing systems.
Table 1: Static pull force (force vs gap) - characteristics
MW 22x6 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
2967 Gs
296.7 mT
|
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
|
medium risk |
| 1 mm |
2767 Gs
276.7 mT
|
8.12 kg / 17.89 LBS
8116.0 g / 79.6 N
|
medium risk |
| 2 mm |
2538 Gs
253.8 mT
|
6.82 kg / 15.05 LBS
6824.4 g / 66.9 N
|
medium risk |
| 3 mm |
2295 Gs
229.5 mT
|
5.58 kg / 12.30 LBS
5580.8 g / 54.7 N
|
medium risk |
| 5 mm |
1818 Gs
181.8 mT
|
3.50 kg / 7.73 LBS
3504.7 g / 34.4 N
|
medium risk |
| 10 mm |
938 Gs
93.8 mT
|
0.93 kg / 2.06 LBS
933.4 g / 9.2 N
|
weak grip |
| 15 mm |
492 Gs
49.2 mT
|
0.26 kg / 0.57 LBS
257.0 g / 2.5 N
|
weak grip |
| 20 mm |
277 Gs
27.7 mT
|
0.08 kg / 0.18 LBS
81.6 g / 0.8 N
|
weak grip |
| 30 mm |
108 Gs
10.8 mT
|
0.01 kg / 0.03 LBS
12.4 g / 0.1 N
|
weak grip |
| 50 mm |
29 Gs
2.9 mT
|
0.00 kg / 0.00 LBS
0.9 g / 0.0 N
|
weak grip |
Table 2: Shear hold (wall)
MW 22x6 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
1.87 kg / 4.11 LBS
1866.0 g / 18.3 N
|
| 1 mm | Stal (~0.2) |
1.62 kg / 3.58 LBS
1624.0 g / 15.9 N
|
| 2 mm | Stal (~0.2) |
1.36 kg / 3.01 LBS
1364.0 g / 13.4 N
|
| 3 mm | Stal (~0.2) |
1.12 kg / 2.46 LBS
1116.0 g / 10.9 N
|
| 5 mm | Stal (~0.2) |
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 10 mm | Stal (~0.2) |
0.19 kg / 0.41 LBS
186.0 g / 1.8 N
|
| 15 mm | Stal (~0.2) |
0.05 kg / 0.11 LBS
52.0 g / 0.5 N
|
| 20 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
16.0 g / 0.2 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 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) - vertical pull
MW 22x6 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.80 kg / 6.17 LBS
2799.0 g / 27.5 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
1.87 kg / 4.11 LBS
1866.0 g / 18.3 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.93 kg / 2.06 LBS
933.0 g / 9.2 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
4.67 kg / 10.28 LBS
4665.0 g / 45.8 N
|
Table 4: Material efficiency (substrate influence) - power losses
MW 22x6 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.93 kg / 2.06 LBS
933.0 g / 9.2 N
|
| 1 mm |
|
2.33 kg / 5.14 LBS
2332.5 g / 22.9 N
|
| 2 mm |
|
4.67 kg / 10.28 LBS
4665.0 g / 45.8 N
|
| 3 mm |
|
7.00 kg / 15.43 LBS
6997.5 g / 68.6 N
|
| 5 mm |
|
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
|
| 10 mm |
|
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
|
| 11 mm |
|
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
|
| 12 mm |
|
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
|
Table 5: Thermal stability (material behavior) - thermal limit
MW 22x6 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
9.33 kg / 20.57 LBS
9330.0 g / 91.5 N
|
OK |
| 40 °C | -2.2% |
9.12 kg / 20.12 LBS
9124.7 g / 89.5 N
|
OK |
| 60 °C | -4.4% |
8.92 kg / 19.66 LBS
8919.5 g / 87.5 N
|
|
| 80 °C | -6.6% |
8.71 kg / 19.21 LBS
8714.2 g / 85.5 N
|
|
| 100 °C | -28.8% |
6.64 kg / 14.65 LBS
6643.0 g / 65.2 N
|
Table 6: Magnet-Magnet interaction (attraction) - field range
MW 22x6 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Strength (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
20.63 kg / 45.48 LBS
4 566 Gs
|
3.09 kg / 6.82 LBS
3095 g / 30.4 N
|
N/A |
| 1 mm |
19.34 kg / 42.63 LBS
5 745 Gs
|
2.90 kg / 6.40 LBS
2901 g / 28.5 N
|
17.40 kg / 38.37 LBS
~0 Gs
|
| 2 mm |
17.95 kg / 39.57 LBS
5 535 Gs
|
2.69 kg / 5.93 LBS
2692 g / 26.4 N
|
16.15 kg / 35.61 LBS
~0 Gs
|
| 3 mm |
16.52 kg / 36.42 LBS
5 310 Gs
|
2.48 kg / 5.46 LBS
2478 g / 24.3 N
|
14.87 kg / 32.78 LBS
~0 Gs
|
| 5 mm |
13.69 kg / 30.18 LBS
4 834 Gs
|
2.05 kg / 4.53 LBS
2053 g / 20.1 N
|
12.32 kg / 27.16 LBS
~0 Gs
|
| 10 mm |
7.75 kg / 17.09 LBS
3 637 Gs
|
1.16 kg / 2.56 LBS
1162 g / 11.4 N
|
6.97 kg / 15.38 LBS
~0 Gs
|
| 20 mm |
2.06 kg / 4.55 LBS
1 877 Gs
|
0.31 kg / 0.68 LBS
310 g / 3.0 N
|
1.86 kg / 4.10 LBS
~0 Gs
|
| 50 mm |
0.07 kg / 0.15 LBS
336 Gs
|
0.01 kg / 0.02 LBS
10 g / 0.1 N
|
0.06 kg / 0.13 LBS
~0 Gs
|
| 60 mm |
0.03 kg / 0.06 LBS
217 Gs
|
0.00 kg / 0.01 LBS
4 g / 0.0 N
|
0.02 kg / 0.05 LBS
~0 Gs
|
| 70 mm |
0.01 kg / 0.03 LBS
147 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.03 LBS
~0 Gs
|
| 80 mm |
0.01 kg / 0.01 LBS
104 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 90 mm |
0.00 kg / 0.01 LBS
76 Gs
|
0.00 kg / 0.00 LBS
1 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 LBS
57 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Safety (HSE) (implants) - warnings
MW 22x6 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 9.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 7.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 6.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 4.5 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: Dynamics (cracking risk) - warning
MW 22x6 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.74 km/h
(6.87 m/s)
|
0.40 J | |
| 30 mm |
25.83 km/h
(7.17 m/s)
|
0.44 J | |
| 50 mm |
25.85 km/h
(7.18 m/s)
|
0.44 J | |
| 100 mm |
25.85 km/h
(7.18 m/s)
|
0.44 J |
Table 9: Coating parameters (durability)
MW 22x6 / 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 22x6 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 12 337 Mx | 123.4 µWb |
| Pc Coefficient | 0.37 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 22x6 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 9.33 kg | Standard |
| Water (riverbed) |
10.68 kg
(+1.35 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Warning: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.
2. Efficiency vs thickness
*Thin metal sheet (e.g. computer case) severely reduces the holding force.
3. Thermal stability
*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) = 0.37
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out more deals
Advantages as well as disadvantages of neodymium magnets.
Pros
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They maintain their magnetic properties even under close interference source,
- Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold-plated, or silver gives an visually attractive appearance,
- Magnets have exceptionally strong magnetic induction on the working surface,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to versatility in shaping and the ability to modify to complex applications,
- Significant place in future technologies – they are utilized in computer drives, electromotive mechanisms, medical devices, also multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Limitations
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- Due to limitations in realizing nuts and complex forms in magnets, we recommend using cover - magnetic mount.
- Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical after entering the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what it depends on?
- with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
- whose thickness reaches at least 10 mm
- characterized by even structure
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the mounting surface
- in stable room temperature
Practical lifting capacity: influencing factors
- Distance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
- Plate material – mild steel gives the best results. Alloy admixtures lower magnetic permeability and holding force.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Thermal environment – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.
Lifting capacity was measured using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.
Safe handling of neodymium magnets
Safe operation
Be careful. Neodymium magnets attract from a distance and snap with massive power, often faster than you can react.
Electronic devices
Do not bring magnets close to a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.
Material brittleness
Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. Wear goggles.
Keep away from electronics
Note: rare earth magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Fire warning
Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Pacemakers
Medical warning: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Skin irritation risks
Certain individuals have a contact allergy to Ni, which is the common plating for NdFeB magnets. Frequent touching can result in a rash. We recommend use protective gloves.
Maximum temperature
Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.
Hand protection
Large magnets can smash fingers in a fraction of a second. Never place your hand betwixt two strong magnets.
Keep away from children
NdFeB magnets are not toys. Swallowing multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.
