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MW 5x1 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010082

GTIN/EAN: 5906301810810

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

1 mm [±0,1 mm]

Weight

0.15 g

Magnetization Direction

↑ axial

Load capacity

0.32 kg / 3.12 N

Magnetic Induction

229.95 mT / 2300 Gs

Coating

[NiCuNi] Nickel

0.1845 with VAT / pcs + price for transport

0.1500 ZŁ net + 23% VAT / pcs

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Detailed specification - MW 5x1 / N38 - cylindrical magnet

Specification / characteristics - MW 5x1 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010082
GTIN/EAN 5906301810810
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 5 mm [±0,1 mm]
Height 1 mm [±0,1 mm]
Weight 0.15 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.32 kg / 3.12 N
Magnetic Induction ~ ? 229.95 mT / 2300 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x1 / N38 - cylindrical magnet
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

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 simulation of the assembly - report

The following data constitute the direct effect of a mathematical simulation. Results were calculated on algorithms for the material Nd2Fe14B. Operational parameters might slightly differ. Please consider these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MW 5x1 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 2298 Gs
229.8 mT
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
weak grip
1 mm 1570 Gs
157.0 mT
0.15 kg / 0.33 pounds
149.5 g / 1.5 N
weak grip
2 mm 890 Gs
89.0 mT
0.05 kg / 0.11 pounds
48.0 g / 0.5 N
weak grip
3 mm 495 Gs
49.5 mT
0.01 kg / 0.03 pounds
14.8 g / 0.1 N
weak grip
5 mm 178 Gs
17.8 mT
0.00 kg / 0.00 pounds
1.9 g / 0.0 N
weak grip
10 mm 31 Gs
3.1 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip
15 mm 10 Gs
1.0 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
20 mm 4 Gs
0.4 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
30 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
50 mm 0 Gs
0.0 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Vertical force (wall)
MW 5x1 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.06 kg / 0.14 pounds
64.0 g / 0.6 N
1 mm Stal (~0.2) 0.03 kg / 0.07 pounds
30.0 g / 0.3 N
2 mm Stal (~0.2) 0.01 kg / 0.02 pounds
10.0 g / 0.1 N
3 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 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: Wall mounting (sliding) - vertical pull
MW 5x1 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.10 kg / 0.21 pounds
96.0 g / 0.9 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.06 kg / 0.14 pounds
64.0 g / 0.6 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.03 kg / 0.07 pounds
32.0 g / 0.3 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.16 kg / 0.35 pounds
160.0 g / 1.6 N

Table 4: Material efficiency (substrate influence) - power losses
MW 5x1 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.03 kg / 0.07 pounds
32.0 g / 0.3 N
1 mm
25%
0.08 kg / 0.18 pounds
80.0 g / 0.8 N
2 mm
50%
0.16 kg / 0.35 pounds
160.0 g / 1.6 N
3 mm
75%
0.24 kg / 0.53 pounds
240.0 g / 2.4 N
5 mm
100%
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
10 mm
100%
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
11 mm
100%
0.32 kg / 0.71 pounds
320.0 g / 3.1 N
12 mm
100%
0.32 kg / 0.71 pounds
320.0 g / 3.1 N

Table 5: Working in heat (stability) - power drop
MW 5x1 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.32 kg / 0.71 pounds
320.0 g / 3.1 N
OK
40 °C -2.2% 0.31 kg / 0.69 pounds
313.0 g / 3.1 N
OK
60 °C -4.4% 0.31 kg / 0.67 pounds
305.9 g / 3.0 N
80 °C -6.6% 0.30 kg / 0.66 pounds
298.9 g / 2.9 N
100 °C -28.8% 0.23 kg / 0.50 pounds
227.8 g / 2.2 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 5x1 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.64 kg / 1.41 pounds
3 860 Gs
0.10 kg / 0.21 pounds
96 g / 0.9 N
N/A
1 mm 0.47 kg / 1.04 pounds
3 948 Gs
0.07 kg / 0.16 pounds
71 g / 0.7 N
0.42 kg / 0.94 pounds
~0 Gs
2 mm 0.30 kg / 0.66 pounds
3 141 Gs
0.04 kg / 0.10 pounds
45 g / 0.4 N
0.27 kg / 0.59 pounds
~0 Gs
3 mm 0.17 kg / 0.38 pounds
2 388 Gs
0.03 kg / 0.06 pounds
26 g / 0.3 N
0.16 kg / 0.34 pounds
~0 Gs
5 mm 0.05 kg / 0.12 pounds
1 322 Gs
0.01 kg / 0.02 pounds
8 g / 0.1 N
0.05 kg / 0.10 pounds
~0 Gs
10 mm 0.00 kg / 0.01 pounds
355 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
62 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
5 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
3 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
1 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) - warnings
MW 5x1 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.0 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) 1.0 cm
Car key 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 (kinetic energy) - collision effects
MW 5x1 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 46.59 km/h
(12.94 m/s)
0.01 J
30 mm 80.68 km/h
(22.41 m/s)
0.04 J
50 mm 104.16 km/h
(28.93 m/s)
0.06 J
100 mm 147.30 km/h
(40.92 m/s)
0.13 J

Table 9: Coating parameters (durability)
MW 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 (Pc)
MW 5x1 / N38

Parameter Value SI Unit / Description
Magnetic Flux 524 Mx 5.2 µWb
Pc Coefficient 0.29 Low (Flat)

Table 11: Physics of underwater searching
MW 5x1 / N38

Environment Effective steel pull Effect
Air (land) 0.32 kg Standard
Water (riverbed) 0.37 kg
(+0.05 kg buoyancy gain)
+14.5%
Rust risk: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Shear force

*Warning: On a vertical wall, the magnet retains only approx. 20-30% of its nominal pull.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) significantly weakens the holding force.

3. Thermal stability

*For N38 material, the safety limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.29

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.

Engineering data and GPSR
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
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 010082-2026
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Magnet pull force

Field Strength

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The presented product is an exceptionally strong cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø5x1 mm, guarantees optimal power. The MW 5x1 / N38 model features high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with significant force (approx. 0.32 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 3.12 N with a weight of only 0.15 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.
Magnets N38 are suitable for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x1), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.
This model is characterized by dimensions Ø5x1 mm, which, at a weight of 0.15 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.32 kg (force ~3.12 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 1 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of neodymium magnets.

Strengths

Apart from their strong magnetism, neodymium magnets have these key benefits:
  • They do not lose power, even during approximately ten years – the decrease in lifting capacity is only ~1% (based on measurements),
  • They maintain their magnetic properties even under close interference source,
  • In other words, due to the smooth layer of silver, the element gains a professional look,
  • Magnetic induction on the surface of the magnet remains very high,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of accurate shaping and optimizing to individual conditions,
  • Huge importance in future technologies – they are utilized in data components, electric motors, precision medical tools, also industrial machines.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • We suggest a housing - magnetic holder, due to difficulties in creating threads inside the magnet and complex forms.
  • Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these magnets are able to complicate diagnosis medical in case of swallowing.
  • With mass production the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum holding power of the magnet – what contributes to it?

The specified lifting capacity refers to the limit force, obtained under laboratory conditions, meaning:
  • on a plate made of structural steel, effectively closing the magnetic field
  • with a cross-section minimum 10 mm
  • characterized by even structure
  • with zero gap (no paint)
  • under axial application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

Effective lifting capacity is influenced by working environment parameters, mainly (from priority):
  • Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
  • Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under shearing force the load capacity is reduced by as much as fivefold. Moreover, even a small distance between the magnet and the plate lowers the lifting capacity.

H&S for magnets
Caution required

Handle magnets consciously. Their powerful strength can surprise even professionals. Stay alert and respect their power.

Health Danger

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Keep away from electronics

A powerful magnetic field negatively affects the functioning of compasses in phones and GPS navigation. Maintain magnets close to a device to avoid breaking the sensors.

Keep away from computers

Equipment safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, medical aids, mechanical watches).

Magnet fragility

Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Danger to the youngest

Strictly store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are tragic.

Bodily injuries

Large magnets can break fingers in a fraction of a second. Do not put your hand between two strong magnets.

Sensitization to coating

Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease handling magnets and use protective gear.

Fire risk

Powder created during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Demagnetization risk

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Caution! Need more info? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98