MW 35x5 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010059
GTIN/EAN: 5906301810582
Diameter Ø
35 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
36.08 g
Magnetization Direction
↑ axial
Load capacity
9.25 kg / 90.73 N
Magnetic Induction
170.30 mT / 1703 Gs
Coating
[NiCuNi] Nickel
13.81 ZŁ with VAT / pcs + price for transport
11.23 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
otherwise let us know through
inquiry form
the contact form page.
Parameters and form of a magnet can be verified using our
magnetic mass calculator.
Orders placed before 14:00 will be shipped the same business day.
Technical - MW 35x5 / N38 - cylindrical magnet
Specification / characteristics - MW 35x5 / N38 - cylindrical magnet
| properties | values |
|---|---|
| Cat. no. | 010059 |
| GTIN/EAN | 5906301810582 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 35 mm [±0,1 mm] |
| Height | 5 mm [±0,1 mm] |
| Weight | 36.08 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 9.25 kg / 90.73 N |
| Magnetic Induction ~ ? | 170.30 mT / 1703 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 |
Technical modeling of the magnet - technical parameters
These values constitute the outcome of a mathematical analysis. Results rely on models for the class Nd2Fe14B. Real-world parameters may deviate from the simulation results. Treat these calculations as a supplementary guide when designing systems.
Table 1: Static force (pull vs gap) - power drop
MW 35x5 / N38
| Distance (mm) | Induction (Gauss) / mT | Pull Force (kg/lbs/g/N) | Risk Status |
|---|---|---|---|
| 0 mm |
1703 Gs
170.3 mT
|
9.25 kg / 20.39 LBS
9250.0 g / 90.7 N
|
strong |
| 1 mm |
1657 Gs
165.7 mT
|
8.76 kg / 19.31 LBS
8759.4 g / 85.9 N
|
strong |
| 2 mm |
1599 Gs
159.9 mT
|
8.15 kg / 17.97 LBS
8152.2 g / 80.0 N
|
strong |
| 3 mm |
1530 Gs
153.0 mT
|
7.47 kg / 16.47 LBS
7468.5 g / 73.3 N
|
strong |
| 5 mm |
1373 Gs
137.3 mT
|
6.01 kg / 13.25 LBS
6011.5 g / 59.0 N
|
strong |
| 10 mm |
959 Gs
95.9 mT
|
2.93 kg / 6.47 LBS
2932.7 g / 28.8 N
|
strong |
| 15 mm |
631 Gs
63.1 mT
|
1.27 kg / 2.80 LBS
1270.4 g / 12.5 N
|
safe |
| 20 mm |
413 Gs
41.3 mT
|
0.54 kg / 1.20 LBS
544.8 g / 5.3 N
|
safe |
| 30 mm |
190 Gs
19.0 mT
|
0.12 kg / 0.25 LBS
115.2 g / 1.1 N
|
safe |
| 50 mm |
56 Gs
5.6 mT
|
0.01 kg / 0.02 LBS
10.1 g / 0.1 N
|
safe |
Table 2: Shear load (wall)
MW 35x5 / N38
| Distance (mm) | Friction coefficient | Pull Force (kg/lbs/g/N) |
|---|---|---|
| 0 mm | Stal (~0.2) |
1.85 kg / 4.08 LBS
1850.0 g / 18.1 N
|
| 1 mm | Stal (~0.2) |
1.75 kg / 3.86 LBS
1752.0 g / 17.2 N
|
| 2 mm | Stal (~0.2) |
1.63 kg / 3.59 LBS
1630.0 g / 16.0 N
|
| 3 mm | Stal (~0.2) |
1.49 kg / 3.29 LBS
1494.0 g / 14.7 N
|
| 5 mm | Stal (~0.2) |
1.20 kg / 2.65 LBS
1202.0 g / 11.8 N
|
| 10 mm | Stal (~0.2) |
0.59 kg / 1.29 LBS
586.0 g / 5.7 N
|
| 15 mm | Stal (~0.2) |
0.25 kg / 0.56 LBS
254.0 g / 2.5 N
|
| 20 mm | Stal (~0.2) |
0.11 kg / 0.24 LBS
108.0 g / 1.1 N
|
| 30 mm | Stal (~0.2) |
0.02 kg / 0.05 LBS
24.0 g / 0.2 N
|
| 50 mm | Stal (~0.2) |
0.00 kg / 0.00 LBS
2.0 g / 0.0 N
|
Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 35x5 / N38
| Surface type | Friction coefficient / % Mocy | Max load (kg/lbs/g/N) |
|---|---|---|
| Raw steel |
µ = 0.3
30% Nominalnej Siły
|
2.78 kg / 6.12 LBS
2775.0 g / 27.2 N
|
| Painted steel (standard) |
µ = 0.2
20% Nominalnej Siły
|
1.85 kg / 4.08 LBS
1850.0 g / 18.1 N
|
| Oily/slippery steel |
µ = 0.1
10% Nominalnej Siły
|
0.93 kg / 2.04 LBS
925.0 g / 9.1 N
|
| Magnet with anti-slip rubber |
µ = 0.5
50% Nominalnej Siły
|
4.63 kg / 10.20 LBS
4625.0 g / 45.4 N
|
Table 4: Steel thickness (saturation) - power losses
MW 35x5 / N38
| Steel thickness (mm) | % power | Real pull force (kg/lbs/g/N) |
|---|---|---|
| 0.5 mm |
|
0.93 kg / 2.04 LBS
925.0 g / 9.1 N
|
| 1 mm |
|
2.31 kg / 5.10 LBS
2312.5 g / 22.7 N
|
| 2 mm |
|
4.63 kg / 10.20 LBS
4625.0 g / 45.4 N
|
| 3 mm |
|
6.94 kg / 15.29 LBS
6937.5 g / 68.1 N
|
| 5 mm |
|
9.25 kg / 20.39 LBS
9250.0 g / 90.7 N
|
| 10 mm |
|
9.25 kg / 20.39 LBS
9250.0 g / 90.7 N
|
| 11 mm |
|
9.25 kg / 20.39 LBS
9250.0 g / 90.7 N
|
| 12 mm |
|
9.25 kg / 20.39 LBS
9250.0 g / 90.7 N
|
Table 5: Thermal resistance (material behavior) - power drop
MW 35x5 / N38
| Ambient temp. (°C) | Power loss | Remaining pull (kg/lbs/g/N) | Status |
|---|---|---|---|
| 20 °C | 0.0% |
9.25 kg / 20.39 LBS
9250.0 g / 90.7 N
|
OK |
| 40 °C | -2.2% |
9.05 kg / 19.94 LBS
9046.5 g / 88.7 N
|
OK |
| 60 °C | -4.4% |
8.84 kg / 19.50 LBS
8843.0 g / 86.7 N
|
|
| 80 °C | -6.6% |
8.64 kg / 19.05 LBS
8639.5 g / 84.8 N
|
|
| 100 °C | -28.8% |
6.59 kg / 14.52 LBS
6586.0 g / 64.6 N
|
Table 6: Two magnets (repulsion) - field range
MW 35x5 / N38
| Gap (mm) | Attraction (kg/lbs) (N-S) | Lateral Force (kg/lbs/g/N) | Repulsion (kg/lbs) (N-N) |
|---|---|---|---|
| 0 mm |
17.20 kg / 37.92 LBS
3 075 Gs
|
2.58 kg / 5.69 LBS
2580 g / 25.3 N
|
N/A |
| 1 mm |
16.78 kg / 36.99 LBS
3 364 Gs
|
2.52 kg / 5.55 LBS
2517 g / 24.7 N
|
15.10 kg / 33.29 LBS
~0 Gs
|
| 2 mm |
16.29 kg / 35.91 LBS
3 314 Gs
|
2.44 kg / 5.39 LBS
2443 g / 24.0 N
|
14.66 kg / 32.32 LBS
~0 Gs
|
| 3 mm |
15.75 kg / 34.71 LBS
3 259 Gs
|
2.36 kg / 5.21 LBS
2362 g / 23.2 N
|
14.17 kg / 31.24 LBS
~0 Gs
|
| 5 mm |
14.54 kg / 32.05 LBS
3 131 Gs
|
2.18 kg / 4.81 LBS
2180 g / 21.4 N
|
13.08 kg / 28.84 LBS
~0 Gs
|
| 10 mm |
11.18 kg / 24.64 LBS
2 746 Gs
|
1.68 kg / 3.70 LBS
1677 g / 16.4 N
|
10.06 kg / 22.18 LBS
~0 Gs
|
| 20 mm |
5.45 kg / 12.02 LBS
1 918 Gs
|
0.82 kg / 1.80 LBS
818 g / 8.0 N
|
4.91 kg / 10.82 LBS
~0 Gs
|
| 50 mm |
0.45 kg / 1.00 LBS
552 Gs
|
0.07 kg / 0.15 LBS
68 g / 0.7 N
|
0.41 kg / 0.90 LBS
~0 Gs
|
| 60 mm |
0.21 kg / 0.47 LBS
380 Gs
|
0.03 kg / 0.07 LBS
32 g / 0.3 N
|
0.19 kg / 0.42 LBS
~0 Gs
|
| 70 mm |
0.11 kg / 0.24 LBS
269 Gs
|
0.02 kg / 0.04 LBS
16 g / 0.2 N
|
0.10 kg / 0.21 LBS
~0 Gs
|
| 80 mm |
0.06 kg / 0.13 LBS
197 Gs
|
0.01 kg / 0.02 LBS
9 g / 0.1 N
|
0.05 kg / 0.11 LBS
~0 Gs
|
| 90 mm |
0.03 kg / 0.07 LBS
147 Gs
|
0.00 kg / 0.01 LBS
5 g / 0.0 N
|
0.03 kg / 0.06 LBS
~0 Gs
|
| 100 mm |
0.02 kg / 0.04 LBS
112 Gs
|
0.00 kg / 0.01 LBS
3 g / 0.0 N
|
0.02 kg / 0.04 LBS
~0 Gs
|
Table 7: Safety (HSE) (implants) - precautionary measures
MW 35x5 / N38
| Object / Device | Limit (Gauss) / mT | Safe distance |
|---|---|---|
| Pacemaker | 5 Gs (0.5 mT) | 12.5 cm |
| Hearing aid | 10 Gs (1.0 mT) | 9.5 cm |
| Timepiece | 20 Gs (2.0 mT) | 7.5 cm |
| Phone / Smartphone | 40 Gs (4.0 mT) | 6.0 cm |
| Car key | 50 Gs (5.0 mT) | 5.5 cm |
| Payment card | 400 Gs (40.0 mT) | 2.5 cm |
| HDD hard drive | 600 Gs (60.0 mT) | 2.0 cm |
Table 8: Impact energy (kinetic energy) - warning
MW 35x5 / N38
| Start from (mm) | Speed (km/h) | Energy (J) | Predicted outcome |
|---|---|---|---|
| 10 mm |
19.08 km/h
(5.30 m/s)
|
0.51 J | |
| 30 mm |
28.19 km/h
(7.83 m/s)
|
1.11 J | |
| 50 mm |
36.13 km/h
(10.04 m/s)
|
1.82 J | |
| 100 mm |
51.07 km/h
(14.18 m/s)
|
3.63 J |
Table 9: Surface protection spec
MW 35x5 / 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 35x5 / N38
| Parameter | Value | SI Unit / Description |
|---|---|---|
| Magnetic Flux | 20 291 Mx | 202.9 µWb |
| Pc Coefficient | 0.22 | Low (Flat) |
Table 11: Physics of underwater searching
MW 35x5 / N38
| Environment | Effective steel pull | Effect |
|---|---|---|
| Air (land) | 9.25 kg | Standard |
| Water (riverbed) |
10.59 kg
(+1.34 kg buoyancy gain)
|
+14.5% |
1. Vertical hold
*Note: On a vertical wall, the magnet holds merely approx. 20-30% of its nominal pull.
2. Steel saturation
*Thin metal sheet (e.g. computer case) significantly weakens the holding force.
3. Thermal stability
*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) = 0.22
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.
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See also proposals
Advantages as well as disadvantages of Nd2Fe14B magnets.
Pros
- They retain magnetic properties for around 10 years – the loss is just ~1% (according to analyses),
- They maintain their magnetic properties even under strong external field,
- A magnet with a metallic nickel surface has an effective appearance,
- The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to versatility in shaping and the ability to modify to specific needs,
- Fundamental importance in advanced technology sectors – they are commonly used in hard drives, electric motors, diagnostic systems, also modern systems.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Disadvantages
- At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited possibility of making nuts in the magnet and complex forms - preferred is a housing - mounting mechanism.
- Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Additionally, tiny parts of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- on a block made of mild steel, effectively closing the magnetic field
- whose transverse dimension reaches at least 10 mm
- with a plane perfectly flat
- with direct contact (no impurities)
- for force applied at a right angle (in the magnet axis)
- in neutral thermal conditions
Practical lifting capacity: influencing factors
- Clearance – the presence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
- Plate thickness – too thin steel causes magnetic saturation, causing part of the power to be lost to the other side.
- Material composition – not every steel reacts the same. Alloy additives weaken the attraction effect.
- Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.
Precautions when working with neodymium magnets
Risk of cracking
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.
ICD Warning
For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or request help to handle the magnets.
Electronic hazard
Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can destroy these devices and erase data from cards.
Fire warning
Drilling and cutting of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Physical harm
Large magnets can break fingers instantly. Do not put your hand betwixt two strong magnets.
This is not a toy
These products are not toys. Swallowing multiple magnets may result in them connecting inside the digestive tract, which poses a critical condition and requires immediate surgery.
Heat sensitivity
Watch the temperature. Exposing the magnet to high heat will ruin its properties and strength.
Metal Allergy
It is widely known that nickel (the usual finish) is a common allergen. If you have an allergy, refrain from touching magnets with bare hands or choose encased magnets.
Impact on smartphones
A powerful magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.
Safe operation
Exercise caution. Rare earth magnets act from a long distance and snap with huge force, often faster than you can move away.
