MW 6x1 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010091
GTIN/EAN: 5906301810902
- Diameter Ø
- 6 mm [±0,1 mm]
- Height
- 1 mm [±0,1 mm]
- Weight
- 0.21 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.1800 zł net / pcs
0.221 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.
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Technical of the product - MW 6x1 / N38 - cylindrical magnet
Specification / characteristics - MW 6x1 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010091 |
| GTIN/EAN | 5906301810902 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 6 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.21 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.35 kg / 3.41 N |
| Magnetic Induction ~ ? | 195.87 mT / 1959 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 |
Physical simulation of the product - report
These values are the outcome of a mathematical analysis. Results are based on models for the class Nd2Fe14B. Real-world conditions may differ from theoretical values. Please consider these data as a reference point during assembly planning.
Table 1: Static force (pull vs distance) - characteristics
MW 6x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1958 Gs
195.8 mT
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
safe |
| 1 mm |
1479 Gs
147.9 mT
|
0.20 kg / 0.44 pounds
199.7 g / 2.0 N
|
safe |
| 2 mm |
945 Gs
94.5 mT
|
0.08 kg / 0.18 pounds
81.6 g / 0.8 N
|
safe |
| 3 mm |
576 Gs
57.6 mT
|
0.03 kg / 0.07 pounds
30.3 g / 0.3 N
|
safe |
| 5 mm |
229 Gs
22.9 mT
|
0.00 kg / 0.01 pounds
4.8 g / 0.0 N
|
safe |
| 10 mm |
43 Gs
4.3 mT
|
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
|
safe |
| 15 mm |
14 Gs
1.4 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 20 mm |
6 Gs
0.6 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 30 mm |
2 Gs
0.2 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
| 50 mm |
0 Gs
0.0 mT
|
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
safe |
Table 2: Vertical hold (vertical surface)
MW 6x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| 1 mm | Stal (~0.2) |
0.04 kg / 0.09 pounds
40.0 g / 0.4 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 pounds
16.0 g / 0.2 N
|
| 3 mm | Stal (~0.2) |
0.01 kg / 0.01 pounds
6.0 g / 0.1 N
|
| 5 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 10 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 15 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 20 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
|
| 30 mm | Stal (~0.2) |
0.00 kg / 0.00 pounds
0.0 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 (sliding) - vertical pull
MW 6x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.11 kg / 0.23 pounds
105.0 g / 1.0 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.07 kg / 0.15 pounds
70.0 g / 0.7 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.03 kg / 0.08 pounds
35.0 g / 0.3 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.18 kg / 0.39 pounds
175.0 g / 1.7 N
|
Table 4: Steel thickness (substrate influence) - sheet metal selection
MW 6x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.03 kg / 0.08 pounds
35.0 g / 0.3 N
|
| 1 mm |
|
0.09 kg / 0.19 pounds
87.5 g / 0.9 N
|
| 2 mm |
|
0.18 kg / 0.39 pounds
175.0 g / 1.7 N
|
| 3 mm |
|
0.26 kg / 0.58 pounds
262.5 g / 2.6 N
|
| 5 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 10 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 11 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
| 12 mm |
|
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
Table 5: Working in heat (material behavior) - resistance threshold
MW 6x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.35 kg / 0.77 pounds
350.0 g / 3.4 N
|
OK |
| 40 °C | -2.2% |
0.34 kg / 0.75 pounds
342.3 g / 3.4 N
|
OK |
| 60 °C | -4.4% |
0.33 kg / 0.74 pounds
334.6 g / 3.3 N
|
|
| 80 °C | -6.6% |
0.33 kg / 0.72 pounds
326.9 g / 3.2 N
|
|
| 100 °C | -28.8% |
0.25 kg / 0.55 pounds
249.2 g / 2.4 N
|
Table 6: Two magnets (repulsion) - forces in the system
MW 6x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.67 kg / 1.47 pounds
3 430 Gs
|
0.10 kg / 0.22 pounds
100 g / 1.0 N
|
N/A |
| 1 mm |
0.54 kg / 1.18 pounds
3 507 Gs
|
0.08 kg / 0.18 pounds
80 g / 0.8 N
|
0.48 kg / 1.06 pounds
~0 Gs
|
| 2 mm |
0.38 kg / 0.84 pounds
2 957 Gs
|
0.06 kg / 0.13 pounds
57 g / 0.6 N
|
0.34 kg / 0.76 pounds
~0 Gs
|
| 3 mm |
0.25 kg / 0.55 pounds
2 393 Gs
|
0.04 kg / 0.08 pounds
37 g / 0.4 N
|
0.22 kg / 0.50 pounds
~0 Gs
|
| 5 mm |
0.10 kg / 0.21 pounds
1 476 Gs
|
0.01 kg / 0.03 pounds
14 g / 0.1 N
|
0.09 kg / 0.19 pounds
~0 Gs
|
| 10 mm |
0.01 kg / 0.02 pounds
458 Gs
|
0.00 kg / 0.00 pounds
1 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 pounds
86 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 pounds
7 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 60 mm |
0.00 kg / 0.00 pounds
4 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 70 mm |
0.00 kg / 0.00 pounds
2 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 80 mm |
0.00 kg / 0.00 pounds
2 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 90 mm |
0.00 kg / 0.00 pounds
1 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
| 100 mm |
0.00 kg / 0.00 pounds
1 Gs
|
0.00 kg / 0.00 pounds
0 g / 0.0 N
|
0.00 kg / 0.00 pounds
~0 Gs
|
Table 7: Hazards (electronics) - precautionary measures
MW 6x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 2.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.0 cm |
| Mechanical watch | 20 Gs (2.0 mT) | 1.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 1.5 cm |
| Remote | 50 Gs (5.0 mT) | 1.0 cm |
| Payment card | 400 Gs (40.0 mT) | 0.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 0.5 cm |
Table 8: Collisions (cracking risk) - warning
MW 6x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
24.56 km/h
(6.82 m/s)
|
0.00 J | |
| 30 mm |
24.57 km/h
(6.82 m/s)
|
0.00 J | |
| 50 mm |
24.57 km/h
(6.83 m/s)
|
0.00 J | |
| 100 mm |
24.57 km/h
(6.83 m/s)
|
0.00 J |
Table 9: Corrosion resistance
MW 6x1 / 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: Construction data (Pc)
MW 6x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 666 Mx | 6.7 µWb |
| Pc Coefficient | 0.25 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 6x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.35 kg | Standard |
| Water (riverbed) |
0.40 kg
(+0.05 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Warning: On a vertical surface, the magnet retains just ~20% of its perpendicular strength.
2. Steel saturation
*Thin steel (e.g. 0.5mm PC case) significantly reduces the holding force.
3. Thermal stability
*For N38 grade, the critical limit is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.25
The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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 rare earth magnets.
Pros
- They retain magnetic properties for nearly ten years – the loss is just ~1% (based on simulations),
- They do not lose their magnetic properties even under close interference source,
- A magnet with a shiny gold surface has an effective appearance,
- The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
- Thanks to versatility in forming and the ability to modify to client solutions,
- Significant place in electronics industry – they serve a role in hard drives, electric drive systems, medical equipment, as well as other advanced devices.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We recommend cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex forms.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what it depends on?
- on a plate made of mild steel, perfectly concentrating the magnetic field
- with a thickness minimum 10 mm
- with a plane cleaned and smooth
- with zero gap (without impurities)
- under axial force direction (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Lifting capacity in practice – influencing factors
- Space between surfaces – every millimeter of distance (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 pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
- Plate thickness – insufficiently thick steel does not close the flux, causing part of the flux to be wasted to the other side.
- Metal type – different alloys attracts identically. High carbon content worsen the attraction effect.
- Surface condition – ground elements ensure maximum contact, which improves force. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
Danger to the youngest
Always keep magnets away from children. Choking hazard is significant, and the consequences of magnets clamping inside the body are fatal.
GPS Danger
An intense magnetic field disrupts the operation of compasses in smartphones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.
Safe operation
Handle magnets with awareness. Their immense force can shock even professionals. Plan your moves and respect their power.
Keep away from computers
Equipment safety: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).
Hand protection
Watch your fingers. Two large magnets will snap together instantly with a force of massive weight, destroying everything in their path. Be careful!
Allergy Warning
Some people suffer from a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact can result in a rash. It is best to use safety gloves.
Risk of cracking
NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them breaking into shards.
ICD Warning
Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.
Power loss in heat
Keep cool. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).
Fire warning
Mechanical processing of neodymium magnets carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
