MW 9.5x1 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010107
GTIN/EAN: 5906301811060
- Diameter Ø
- 9.5 mm [±0,1 mm]
- Height
- 1 mm [±0,1 mm]
- Weight
- 0.53 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
0.240 zł net / pcs
0.295 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 specification - MW 9.5x1 / N38 - cylindrical magnet
Specification / characteristics - MW 9.5x1 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010107 |
| GTIN/EAN | 5906301811060 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 9.5 mm [±0,1 mm] |
| Height | 1 mm [±0,1 mm] |
| Weight | 0.53 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.40 kg / 3.96 N |
| Magnetic Induction ~ ? | 127.68 mT / 1277 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 | 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 |
Engineering analysis of the product - technical parameters
These values are the direct effect of a physical calculation. Results rely on models for the class Nd2Fe14B. Real-world parameters may differ from theoretical values. Use these data as a preliminary roadmap when designing systems.
Table 1: Static pull force (force vs distance) - characteristics
MW 9.5x1 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1276 Gs
127.6 mT
|
0.40 kg / 0.88 lbs
400.0 g / 3.9 N
|
low risk |
| 1 mm |
1129 Gs
112.9 mT
|
0.31 kg / 0.69 lbs
312.8 g / 3.1 N
|
low risk |
| 2 mm |
905 Gs
90.5 mT
|
0.20 kg / 0.44 lbs
201.0 g / 2.0 N
|
low risk |
| 3 mm |
683 Gs
68.3 mT
|
0.11 kg / 0.25 lbs
114.5 g / 1.1 N
|
low risk |
| 5 mm |
366 Gs
36.6 mT
|
0.03 kg / 0.07 lbs
32.9 g / 0.3 N
|
low risk |
| 10 mm |
92 Gs
9.2 mT
|
0.00 kg / 0.00 lbs
2.1 g / 0.0 N
|
low risk |
| 15 mm |
33 Gs
3.3 mT
|
0.00 kg / 0.00 lbs
0.3 g / 0.0 N
|
low risk |
| 20 mm |
15 Gs
1.5 mT
|
0.00 kg / 0.00 lbs
0.1 g / 0.0 N
|
low risk |
| 30 mm |
5 Gs
0.5 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 lbs
0.0 g / 0.0 N
|
low risk |
Table 2: Slippage hold (vertical surface)
MW 9.5x1 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.08 kg / 0.18 lbs
80.0 g / 0.8 N
|
| 1 mm | Stal (~0.2) |
0.06 kg / 0.14 lbs
62.0 g / 0.6 N
|
| 2 mm | Stal (~0.2) |
0.04 kg / 0.09 lbs
40.0 g / 0.4 N
|
| 3 mm | Stal (~0.2) |
0.02 kg / 0.05 lbs
22.0 g / 0.2 N
|
| 5 mm | Stal (~0.2) |
0.01 kg / 0.01 lbs
6.0 g / 0.1 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) - vertical pull
MW 9.5x1 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.12 kg / 0.26 lbs
120.0 g / 1.2 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.08 kg / 0.18 lbs
80.0 g / 0.8 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.04 kg / 0.09 lbs
40.0 g / 0.4 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.20 kg / 0.44 lbs
200.0 g / 2.0 N
|
Table 4: Steel thickness (saturation) - power losses
MW 9.5x1 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.04 kg / 0.09 lbs
40.0 g / 0.4 N
|
| 1 mm |
|
0.10 kg / 0.22 lbs
100.0 g / 1.0 N
|
| 2 mm |
|
0.20 kg / 0.44 lbs
200.0 g / 2.0 N
|
| 3 mm |
|
0.30 kg / 0.66 lbs
300.0 g / 2.9 N
|
| 5 mm |
|
0.40 kg / 0.88 lbs
400.0 g / 3.9 N
|
| 10 mm |
|
0.40 kg / 0.88 lbs
400.0 g / 3.9 N
|
| 11 mm |
|
0.40 kg / 0.88 lbs
400.0 g / 3.9 N
|
| 12 mm |
|
0.40 kg / 0.88 lbs
400.0 g / 3.9 N
|
Table 5: Thermal stability (stability) - power drop
MW 9.5x1 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.40 kg / 0.88 lbs
400.0 g / 3.9 N
|
OK |
| 40 °C | -2.2% |
0.39 kg / 0.86 lbs
391.2 g / 3.8 N
|
OK |
| 60 °C | -4.4% |
0.38 kg / 0.84 lbs
382.4 g / 3.8 N
|
|
| 80 °C | -6.6% |
0.37 kg / 0.82 lbs
373.6 g / 3.7 N
|
|
| 100 °C | -28.8% |
0.28 kg / 0.63 lbs
284.8 g / 2.8 N
|
Table 6: Magnet-Magnet interaction (repulsion) - field collision
MW 9.5x1 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
0.71 kg / 1.57 lbs
2 403 Gs
|
0.11 kg / 0.24 lbs
107 g / 1.0 N
|
N/A |
| 1 mm |
0.65 kg / 1.43 lbs
2 436 Gs
|
0.10 kg / 0.21 lbs
97 g / 1.0 N
|
0.58 kg / 1.29 lbs
~0 Gs
|
| 2 mm |
0.56 kg / 1.23 lbs
2 257 Gs
|
0.08 kg / 0.18 lbs
84 g / 0.8 N
|
0.50 kg / 1.10 lbs
~0 Gs
|
| 3 mm |
0.46 kg / 1.00 lbs
2 041 Gs
|
0.07 kg / 0.15 lbs
68 g / 0.7 N
|
0.41 kg / 0.90 lbs
~0 Gs
|
| 5 mm |
0.27 kg / 0.60 lbs
1 580 Gs
|
0.04 kg / 0.09 lbs
41 g / 0.4 N
|
0.25 kg / 0.54 lbs
~0 Gs
|
| 10 mm |
0.06 kg / 0.13 lbs
732 Gs
|
0.01 kg / 0.02 lbs
9 g / 0.1 N
|
0.05 kg / 0.12 lbs
~0 Gs
|
| 20 mm |
0.00 kg / 0.01 lbs
183 Gs
|
0.00 kg / 0.00 lbs
1 g / 0.0 N
|
0.00 kg / 0.00 lbs
~0 Gs
|
| 50 mm |
0.00 kg / 0.00 lbs
16 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
10 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
6 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
4 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
3 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
2 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) - precautionary measures
MW 9.5x1 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 3.0 cm |
| Hearing aid | 10 Gs (1.0 mT) | 2.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 2.0 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 1.5 cm |
| Remote | 50 Gs (5.0 mT) | 1.5 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 9.5x1 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
21.42 km/h
(5.95 m/s)
|
0.01 J | |
| 30 mm |
21.48 km/h
(5.97 m/s)
|
0.01 J | |
| 50 mm |
21.48 km/h
(5.97 m/s)
|
0.01 J | |
| 100 mm |
21.48 km/h
(5.97 m/s)
|
0.01 J |
Table 9: Coating parameters (durability)
MW 9.5x1 / 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 (Flux)
MW 9.5x1 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 1 184 Mx | 11.8 µWb |
| Pc Coefficient | 0.16 | Low (Flat) |
Table 11: Underwater work (magnet fishing)
MW 9.5x1 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.40 kg | Standard |
| Water (riverbed) |
0.46 kg
(+0.06 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Note: On a vertical wall, the magnet retains only ~20% of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. computer case) severely reduces the holding force.
3. Power loss vs temp
*For N38 material, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.16
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also deals
Advantages and disadvantages of rare earth magnets.
Benefits
- They do not lose magnetism, even after approximately ten years – the drop in strength is only ~1% (based on measurements),
- Magnets effectively resist against loss of magnetization caused by ambient magnetic noise,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to present itself better,
- Magnetic induction on the working layer of the magnet remains exceptional,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Thanks to freedom in shaping and the ability to modify to client solutions,
- Universal use in modern industrial fields – they serve a role in HDD drives, brushless drives, medical devices, and industrial machines.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their force 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
- 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.
- Limited possibility of producing nuts in the magnet and complex forms - recommended is casing - magnetic holder.
- Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets can complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum magnetic pulling force – what affects it?
- on a block made of mild steel, optimally conducting the magnetic field
- possessing a thickness of at least 10 mm to ensure full flux closure
- characterized by even structure
- without the slightest clearance between the magnet and steel
- during pulling in a direction perpendicular to the mounting surface
- at standard ambient temperature
Magnet lifting force in use – key factors
- Gap 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.
- Angle of force application – highest force is reached only during perpendicular pulling. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
- Metal type – not every steel reacts the same. Alloy additives worsen the attraction effect.
- Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet and the plate reduces the load capacity.
Warnings
Danger to pacemakers
Patients with a heart stimulator should keep an large gap from magnets. The magnetic field can stop the operation of the life-saving device.
Conscious usage
Be careful. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can react.
Fire warning
Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.
Precision electronics
Navigation devices and smartphones are highly sensitive to magnetic fields. Direct contact with a strong magnet can ruin the internal compass in your phone.
Demagnetization risk
Keep cool. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).
Pinching danger
Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!
Electronic hazard
Intense magnetic fields can corrupt files on payment cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.
Magnets are brittle
NdFeB magnets are ceramic materials, which means they are very brittle. Collision of two magnets will cause them shattering into shards.
Nickel allergy
Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, cease working with magnets and wear gloves.
Do not give to children
Absolutely store magnets out of reach of children. Choking hazard is significant, and the consequences of magnets connecting inside the body are life-threatening.
