Neodymium magnets – strongest on the market

Need strong magnetic field? We have in stock wide selection of disc, cylindrical and ring magnets. Perfect for for domestic applications, garage and model making. See products in stock.

check full offer

Magnets for underwater searches

Discover your passion related to seabed exploration! Our double-handle grips (F200, F400) provide grip certainty and huge lifting capacity. Solid, corrosion-resistant housing and reinforced ropes will perform in any water.

choose your water magnet

Professional threaded grips

Professional solutions for mounting without drilling. Threaded mounts (external or internal) guarantee quick improvement of work on warehouses. Perfect for installing lamps, detectors and banners.

check available threads

🚚 Order by 14:00 – we'll ship same day!

Dhit sp. z o.o.
Product available Ships tomorrow

MW 10x30 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010009

GTIN/EAN: 5906301810087

5.00

Diameter Ø

10 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

17.67 g

Magnetization Direction

↑ axial

Load capacity

1.92 kg / 18.79 N

Magnetic Induction

610.80 mT / 6108 Gs

Coating

[NiCuNi] Nickel

8.61 with VAT / pcs + price for transport

7.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
7.00 ZŁ
8.61 ZŁ
price from 100 pcs
6.58 ZŁ
8.09 ZŁ
price from 400 pcs
6.16 ZŁ
7.58 ZŁ
Want to negotiate?

Contact us by phone +48 22 499 98 98 otherwise send us a note via inquiry form the contact page.
Force and structure of a neodymium magnet can be tested using our magnetic mass calculator.

Orders placed before 14:00 will be shipped the same business day.

Detailed specification - MW 10x30 / N38 - cylindrical magnet

Specification / characteristics - MW 10x30 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010009
GTIN/EAN 5906301810087
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 10 mm [±0,1 mm]
Height 30 mm [±0,1 mm]
Weight 17.67 g
Magnetization Direction ↑ axial
Load capacity ~ ? 1.92 kg / 18.79 N
Magnetic Induction ~ ? 610.80 mT / 6108 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 10x30 / 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

Engineering modeling of the product - data

Presented data represent the direct effect of a physical calculation. Results are based on models for the class Nd2Fe14B. Real-world parameters might slightly differ from theoretical values. Use these data as a supplementary guide during assembly planning.

Table 1: Static force (pull vs distance) - characteristics
MW 10x30 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 6103 Gs
610.3 mT
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
weak grip
1 mm 4905 Gs
490.5 mT
1.24 kg / 2.73 pounds
1240.1 g / 12.2 N
weak grip
2 mm 3823 Gs
382.3 mT
0.75 kg / 1.66 pounds
753.3 g / 7.4 N
weak grip
3 mm 2940 Gs
294.0 mT
0.45 kg / 0.98 pounds
445.6 g / 4.4 N
weak grip
5 mm 1754 Gs
175.4 mT
0.16 kg / 0.35 pounds
158.5 g / 1.6 N
weak grip
10 mm 607 Gs
60.7 mT
0.02 kg / 0.04 pounds
19.0 g / 0.2 N
weak grip
15 mm 280 Gs
28.0 mT
0.00 kg / 0.01 pounds
4.0 g / 0.0 N
weak grip
20 mm 154 Gs
15.4 mT
0.00 kg / 0.00 pounds
1.2 g / 0.0 N
weak grip
30 mm 63 Gs
6.3 mT
0.00 kg / 0.00 pounds
0.2 g / 0.0 N
weak grip
50 mm 19 Gs
1.9 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Sliding hold (vertical surface)
MW 10x30 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.38 kg / 0.85 pounds
384.0 g / 3.8 N
1 mm Stal (~0.2) 0.25 kg / 0.55 pounds
248.0 g / 2.4 N
2 mm Stal (~0.2) 0.15 kg / 0.33 pounds
150.0 g / 1.5 N
3 mm Stal (~0.2) 0.09 kg / 0.20 pounds
90.0 g / 0.9 N
5 mm Stal (~0.2) 0.03 kg / 0.07 pounds
32.0 g / 0.3 N
10 mm Stal (~0.2) 0.00 kg / 0.01 pounds
4.0 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 (shearing) - vertical pull
MW 10x30 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.58 kg / 1.27 pounds
576.0 g / 5.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.38 kg / 0.85 pounds
384.0 g / 3.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.19 kg / 0.42 pounds
192.0 g / 1.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.96 kg / 2.12 pounds
960.0 g / 9.4 N

Table 4: Material efficiency (saturation) - power losses
MW 10x30 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.19 kg / 0.42 pounds
192.0 g / 1.9 N
1 mm
25%
0.48 kg / 1.06 pounds
480.0 g / 4.7 N
2 mm
50%
0.96 kg / 2.12 pounds
960.0 g / 9.4 N
3 mm
75%
1.44 kg / 3.17 pounds
1440.0 g / 14.1 N
5 mm
100%
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
10 mm
100%
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
11 mm
100%
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
12 mm
100%
1.92 kg / 4.23 pounds
1920.0 g / 18.8 N

Table 5: Thermal resistance (material behavior) - power drop
MW 10x30 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 1.92 kg / 4.23 pounds
1920.0 g / 18.8 N
OK
40 °C -2.2% 1.88 kg / 4.14 pounds
1877.8 g / 18.4 N
OK
60 °C -4.4% 1.84 kg / 4.05 pounds
1835.5 g / 18.0 N
OK
80 °C -6.6% 1.79 kg / 3.95 pounds
1793.3 g / 17.6 N
100 °C -28.8% 1.37 kg / 3.01 pounds
1367.0 g / 13.4 N

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 10x30 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 18.04 kg / 39.76 pounds
6 166 Gs
2.71 kg / 5.96 pounds
2705 g / 26.5 N
N/A
1 mm 14.65 kg / 32.31 pounds
11 003 Gs
2.20 kg / 4.85 pounds
2198 g / 21.6 N
13.19 kg / 29.08 pounds
~0 Gs
2 mm 11.65 kg / 25.68 pounds
9 810 Gs
1.75 kg / 3.85 pounds
1747 g / 17.1 N
10.48 kg / 23.11 pounds
~0 Gs
3 mm 9.13 kg / 20.12 pounds
8 684 Gs
1.37 kg / 3.02 pounds
1369 g / 13.4 N
8.21 kg / 18.11 pounds
~0 Gs
5 mm 5.45 kg / 12.02 pounds
6 710 Gs
0.82 kg / 1.80 pounds
818 g / 8.0 N
4.91 kg / 10.82 pounds
~0 Gs
10 mm 1.49 kg / 3.28 pounds
3 507 Gs
0.22 kg / 0.49 pounds
223 g / 2.2 N
1.34 kg / 2.95 pounds
~0 Gs
20 mm 0.18 kg / 0.39 pounds
1 213 Gs
0.03 kg / 0.06 pounds
27 g / 0.3 N
0.16 kg / 0.35 pounds
~0 Gs
50 mm 0.00 kg / 0.01 pounds
190 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
126 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
88 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
64 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
48 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
37 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Hazards (implants) - warnings
MW 10x30 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 8.5 cm
Hearing aid 10 Gs (1.0 mT) 6.5 cm
Mechanical watch 20 Gs (2.0 mT) 5.0 cm
Mobile device 40 Gs (4.0 mT) 4.0 cm
Car key 50 Gs (5.0 mT) 3.5 cm
Payment card 400 Gs (40.0 mT) 1.5 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm

Table 8: Dynamics (cracking risk) - collision effects
MW 10x30 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 10.58 km/h
(2.94 m/s)
0.08 J
30 mm 18.21 km/h
(5.06 m/s)
0.23 J
50 mm 23.51 km/h
(6.53 m/s)
0.38 J
100 mm 33.24 km/h
(9.23 m/s)
0.75 J

Table 9: Surface protection spec
MW 10x30 / 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 (Flux)
MW 10x30 / N38

Parameter Value SI Unit / Description
Magnetic Flux 5 528 Mx 55.3 µWb
Pc Coefficient 1.38 High (Stable)

Table 11: Submerged application
MW 10x30 / N38

Environment Effective steel pull Effect
Air (land) 1.92 kg Standard
Water (riverbed) 2.20 kg
(+0.28 kg buoyancy gain)
+14.5%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
1. Shear force

*Caution: On a vertical wall, the magnet retains just a fraction of its max power.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Power loss vs temp

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.38

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. 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.

Technical specification and ecology
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%
Sustainability
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: 010009-2026
Measurement Calculator
Magnet pull force

Field Strength

Other proposals

This product is an extremely powerful cylinder magnet, composed of advanced NdFeB material, which, with dimensions of Ø10x30 mm, guarantees the highest energy density. The MW 10x30 / N38 component is characterized by an accuracy of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a magnetic rod with impressive force (approx. 1.92 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 18.79 N with a weight of only 17.67 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 precision component. To ensure stability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most popular standard for industrial neodymium magnets, offering an optimal price-to-power ratio and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø10x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 10 mm and height 30 mm. The value of 18.79 N means that the magnet is capable of holding a weight many times exceeding its own mass of 17.67 g. The product has a [NiCuNi] coating, which protects the surface against oxidation, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 10 mm. 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 through the diameter if your project requires it.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Besides their stability, neodymium magnets are valued for these benefits:
  • They retain attractive force for nearly 10 years – the drop is just ~1% (according to analyses),
  • They do not lose their magnetic properties even under external field action,
  • The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Magnets have excellent magnetic induction on the outer side,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of precise creating and adjusting to specific requirements,
  • Universal use in high-tech industry – they are used in computer drives, motor assemblies, medical devices, as well as technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, with minimal size,

Limitations

Disadvantages of neodymium magnets:
  • At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 stable to moisture, when using outdoors
  • Due to limitations in creating nuts and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Possible danger related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these magnets can be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Magnetic strength at its maximum – what affects it?

The specified lifting capacity concerns the limit force, obtained under ideal test conditions, meaning:
  • on a base made of mild steel, effectively closing the magnetic field
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with an ideally smooth touching surface
  • without the slightest insulating layer between the magnet and steel
  • during detachment in a direction perpendicular to the mounting surface
  • at standard ambient temperature

Key elements affecting lifting force

It is worth knowing that the magnet holding will differ depending on elements below, in order of importance:
  • Air gap (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Material composition – different alloys attracts identically. High carbon content worsen the attraction effect.
  • Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
  • Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Warnings
GPS Danger

A strong magnetic field disrupts the functioning of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid breaking the sensors.

No play value

NdFeB magnets are not suitable for play. Swallowing several magnets may result in them connecting inside the digestive tract, which poses a critical condition and requires immediate surgery.

Material brittleness

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.

Physical harm

Risk of injury: The attraction force is so great that it can cause hematomas, crushing, and broken bones. Protective gloves are recommended.

Skin irritation risks

Some people suffer from a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Extended handling may cause a rash. We strongly advise use protective gloves.

Operating temperature

Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its properties and strength.

Do not drill into magnets

Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Warning for heart patients

For implant holders: Powerful magnets disrupt electronics. Keep at least 30 cm distance or ask another person to handle the magnets.

Handling guide

Before starting, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Protect data

Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Security! Learn more about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98