MW 5x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010085
GTIN/EAN: 5906301810841
- Diameter Ø
- 5 mm [±0,1 mm]
- Height
- 2 mm [±0,1 mm]
- Weight
- 0.29 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
How we measure these parameters — certificates and measurements
0.1500 zł net / pcs
0.1845 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 specification - MW 5x2 / N38 - cylindrical magnet
Specification / characteristics - MW 5x2 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010085 |
| GTIN/EAN | 5906301810841 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 5 mm [±0,1 mm] |
| Height | 2 mm [±0,1 mm] |
| Weight | 0.29 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 0.70 kg / 6.83 N |
| Magnetic Induction ~ ? | 386.50 mT / 3865 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 |
Engineering simulation of the product - data
These values constitute the outcome of a mathematical simulation. Values were calculated on algorithms for the class Nd2Fe14B. Real-world conditions might slightly differ. Use these calculations as a preliminary roadmap when designing systems.
Table 1: Static force (force vs gap) - characteristics
MW 5x2 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
3860 Gs
386.0 mT
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
weak grip |
| 1 mm |
2460 Gs
246.0 mT
|
0.28 kg / 0.63 LBS
284.4 g / 2.8 N
|
weak grip |
| 2 mm |
1384 Gs
138.4 mT
|
0.09 kg / 0.20 LBS
90.0 g / 0.9 N
|
weak grip |
| 3 mm |
782 Gs
78.2 mT
|
0.03 kg / 0.06 LBS
28.8 g / 0.3 N
|
weak grip |
| 5 mm |
293 Gs
29.3 mT
|
0.00 kg / 0.01 LBS
4.0 g / 0.0 N
|
weak grip |
| 10 mm |
55 Gs
5.5 mT
|
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
|
weak grip |
| 15 mm |
18 Gs
1.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 20 mm |
8 Gs
0.8 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 30 mm |
3 Gs
0.3 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
| 50 mm |
1 Gs
0.1 mT
|
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
|
weak grip |
Table 2: Sliding hold (wall)
MW 5x2 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
0.14 kg / 0.31 LBS
140.0 g / 1.4 N
|
| 1 mm | Stal (~0.2) |
0.06 kg / 0.12 LBS
56.0 g / 0.5 N
|
| 2 mm | Stal (~0.2) |
0.02 kg / 0.04 LBS
18.0 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
0.0 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: Vertical assembly (sliding) - vertical pull
MW 5x2 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
0.21 kg / 0.46 LBS
210.0 g / 2.1 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
0.14 kg / 0.31 LBS
140.0 g / 1.4 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.07 kg / 0.15 LBS
70.0 g / 0.7 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
0.35 kg / 0.77 LBS
350.0 g / 3.4 N
|
Table 4: Material efficiency (saturation) - sheet metal selection
MW 5x2 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.07 kg / 0.15 LBS
70.0 g / 0.7 N
|
| 1 mm |
|
0.18 kg / 0.39 LBS
175.0 g / 1.7 N
|
| 2 mm |
|
0.35 kg / 0.77 LBS
350.0 g / 3.4 N
|
| 3 mm |
|
0.52 kg / 1.16 LBS
525.0 g / 5.2 N
|
| 5 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 10 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 11 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
| 12 mm |
|
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
Table 5: Thermal stability (stability) - resistance threshold
MW 5x2 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
|
OK |
| 40 °C | -2.2% |
0.68 kg / 1.51 LBS
684.6 g / 6.7 N
|
OK |
| 60 °C | -4.4% |
0.67 kg / 1.48 LBS
669.2 g / 6.6 N
|
|
| 80 °C | -6.6% |
0.65 kg / 1.44 LBS
653.8 g / 6.4 N
|
|
| 100 °C | -28.8% |
0.50 kg / 1.10 LBS
498.4 g / 4.9 N
|
Table 6: Two magnets (attraction) - field collision
MW 5x2 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Shear Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
1.80 kg / 3.98 LBS
5 236 Gs
|
0.27 kg / 0.60 LBS
271 g / 2.7 N
|
N/A |
| 1 mm |
1.21 kg / 2.68 LBS
6 336 Gs
|
0.18 kg / 0.40 LBS
182 g / 1.8 N
|
1.09 kg / 2.41 LBS
~0 Gs
|
| 2 mm |
0.73 kg / 1.62 LBS
4 921 Gs
|
0.11 kg / 0.24 LBS
110 g / 1.1 N
|
0.66 kg / 1.45 LBS
~0 Gs
|
| 3 mm |
0.42 kg / 0.92 LBS
3 711 Gs
|
0.06 kg / 0.14 LBS
62 g / 0.6 N
|
0.37 kg / 0.83 LBS
~0 Gs
|
| 5 mm |
0.13 kg / 0.29 LBS
2 071 Gs
|
0.02 kg / 0.04 LBS
19 g / 0.2 N
|
0.12 kg / 0.26 LBS
~0 Gs
|
| 10 mm |
0.01 kg / 0.02 LBS
587 Gs
|
0.00 kg / 0.00 LBS
2 g / 0.0 N
|
0.01 kg / 0.02 LBS
~0 Gs
|
| 20 mm |
0.00 kg / 0.00 LBS
110 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
9 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
5 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
3 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
2 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
2 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
1 Gs
|
0.00 kg / 0.00 LBS
0 g / 0.0 N
|
0.00 kg / 0.00 LBS
~0 Gs
|
Table 7: Safety (HSE) (electronics) - warnings
MW 5x2 / 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 |
| Timepiece | 20 Gs (2.0 mT) | 1.5 cm |
| Mobile device | 40 Gs (4.0 mT) | 1.5 cm |
| Remote | 50 Gs (5.0 mT) | 1.5 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) - collision effects
MW 5x2 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
25.34 km/h
(7.04 m/s)
|
0.01 J | |
| 30 mm |
25.35 km/h
(7.04 m/s)
|
0.01 J | |
| 50 mm |
25.35 km/h
(7.04 m/s)
|
0.01 J | |
| 100 mm |
25.35 km/h
(7.04 m/s)
|
0.01 J |
Table 9: Corrosion resistance
MW 5x2 / 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 5x2 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 785 Mx | 7.9 µWb |
| Pc Coefficient | 0.50 | Low (Flat) |
Table 11: Hydrostatics and buoyancy
MW 5x2 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 0.70 kg | Standard |
| Water (riverbed) |
0.80 kg
(+0.10 kg buoyancy gain)
|
+14.5% |
1. Sliding resistance
*Caution: On a vertical wall, the magnet retains just ~20% of its max power.
2. Plate thickness effect
*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.
3. Power loss vs temp
*For standard magnets, the max working temp is 80°C.
4. Demagnetization curve and operating point (B-H)
chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.50
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.
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Check out also products
Pros as well as cons of Nd2Fe14B magnets.
Benefits
- They have unchanged lifting capacity, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
- They are noted for resistance to demagnetization induced by external magnetic fields,
- Thanks to the reflective finish, the coating of nickel, gold, or silver gives an clean appearance,
- Magnetic induction on the surface of the magnet turns out to be very high,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Possibility of accurate modeling and adapting to atypical requirements,
- Significant place in modern technologies – they find application in magnetic memories, brushless drives, advanced medical instruments, and industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Weaknesses
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
- Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these magnets can complicate diagnosis medical after entering the body.
- Due to neodymium price, their price is higher than average,
Lifting parameters
Detachment force of the magnet in optimal conditions – what affects it?
- with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an ideally smooth contact surface
- with zero gap (without coatings)
- under perpendicular application of breakaway force (90-degree angle)
- in stable room temperature
Practical lifting capacity: influencing factors
- Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be lost into the air.
- Plate material – mild steel gives the best results. Alloy admixtures reduce magnetic properties and lifting capacity.
- Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was measured using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet and the plate decreases the load capacity.
Safe handling of NdFeB magnets
Sensitization to coating
It is widely known that nickel (the usual finish) is a strong allergen. If you have an allergy, prevent touching magnets with bare hands or select coated magnets.
Risk of cracking
Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Wear goggles.
Respect the power
Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.
Combustion hazard
Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.
Bone fractures
Pinching hazard: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.
Demagnetization risk
Control the heat. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.
Compass and GPS
GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a strong magnet can permanently damage the internal compass in your phone.
Magnetic media
Do not bring magnets near a wallet, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.
Swallowing risk
Always keep magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are tragic.
Pacemakers
Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.
