← previous
next →
Product available Ships today (order by 14:00) CO2 GPSR PPWR REACH

MPL 30x10x8 / N38 - lamellar magnet

lamellar magnet

Catalog no 020139

GTIN/EAN: 5906301811459

5.00
Load capacity 12.13 kg / 119.04 N Magnetic Induction 427.56 mT / 4276 Gs
length
30 mm [±0,1 mm]
Width
10 mm [±0,1 mm]
Height
8 mm [±0,1 mm]
Weight
18 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

product specifications »

8.71 zł net / pcs

10.71 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
8.71 zł
10.71 zł
price from 100 pcs
8.19 zł
10.07 zł
price from 300 pcs
7.66 zł
9.43 zł

Frequently asked questions

How much will a block magnet really hold?
The catalogue force is measured in full contact with smooth steel at least 10 mm thick, pulled perpendicular, at about 20 °C. On 1 mm sheet about 50% of that value remains, on 0.5 mm about 25%. Mounted on a vertical wall the realistic figure is 20–30%, because the load is then in shear rather than in tension.
What is the maximum working temperature?
Standard N-series grades up to 80 °C, and N50, N52 and N54 up to 60 °C. Above the maximum working temperature the loss stops being reversible. The Curie temperature, at which magnetic properties are lost completely, is about 310 °C.
What safety factor should I allow?
At least twice the mass of the item, and three to five times for vertical mounting. The margin covers sheet thickness, surface condition, any layer of paint or rust, and vibration.

Guides from the knowledge base

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.

PDF report Calculator
Want to talk magnets?

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 - MPL 30x10x8 / N38 - lamellar magnet

Specification / characteristics - MPL 30x10x8 / N38 - lamellar magnet

properties
properties values
Cat. no. 020139
GTIN/EAN 5906301811459
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 30 mm [±0,1 mm]
Width 10 mm [±0,1 mm]
Height 8 mm [±0,1 mm]
Weight 18 g
Magnetization Direction ↑ axial
Load capacity ~ ? 12.13 kg / 119.04 N
Magnetic Induction ~ ? 427.56 mT / 4276 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x10x8 / N38 - lamellar magnet
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

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

Technical simulation of the magnet - data

Presented values are the result of a engineering analysis. Results were calculated on models for the class Nd2Fe14B. Real-world conditions may differ. Use these data as a reference point during assembly planning.

Table 1: Static pull force (force vs distance) - power drop
MPL 30x10x8 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4273 Gs
427.3 mT
 12.13 kg / 26.74 pounds
12130.0 g / 119.0 N
 dangerous!
1 mm 3683 Gs
368.3 mT
 9.01 kg / 19.86 pounds
9009.7 g / 88.4 N
 medium risk
2 mm 3109 Gs
310.9 mT
 6.42 kg / 14.15 pounds
6419.9 g / 63.0 N
 medium risk
3 mm 2600 Gs
260.0 mT
 4.49 kg / 9.90 pounds
4488.7 g / 44.0 N
 medium risk
5 mm 1818 Gs
181.8 mT
 2.20 kg / 4.84 pounds
2195.3 g / 21.5 N
 medium risk
10 mm 825 Gs
82.5 mT
 0.45 kg / 1.00 pounds
452.4 g / 4.4 N
 low risk
15 mm 431 Gs
43.1 mT
 0.12 kg / 0.27 pounds
123.4 g / 1.2 N
 low risk
20 mm 248 Gs
24.8 mT
 0.04 kg / 0.09 pounds
41.0 g / 0.4 N
 low risk
30 mm 101 Gs
10.1 mT
 0.01 kg / 0.02 pounds
6.8 g / 0.1 N
 low risk
50 mm 28 Gs
2.8 mT
 0.00 kg / 0.00 pounds
0.5 g / 0.0 N
 low risk
Pulling power weakens sharply with every subsequent millimeter of distance. Note that even the smallest gap (e.g., dirt, paint, dust) significantly diminishes the holding power. Magnets operate strongest during direct contact; distance drastically cuts the force. Analyze how rapidly the parameters fall, when the magnet does not adhere directly to the steel surface. When planning the mounting, discard unnecessary gaps.

Table 2: Shear load (wall)
MPL 30x10x8 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 2.43 kg / 5.35 pounds
2426.0 g / 23.8 N
1 mm Stal (~0.2) 1.80 kg / 3.97 pounds
1802.0 g / 17.7 N
2 mm Stal (~0.2) 1.28 kg / 2.83 pounds
1284.0 g / 12.6 N
3 mm Stal (~0.2) 0.90 kg / 1.98 pounds
898.0 g / 8.8 N
5 mm Stal (~0.2) 0.44 kg / 0.97 pounds
440.0 g / 4.3 N
10 mm Stal (~0.2) 0.09 kg / 0.20 pounds
90.0 g / 0.9 N
15 mm Stal (~0.2) 0.02 kg / 0.05 pounds
24.0 g / 0.2 N
20 mm Stal (~0.2) 0.01 kg / 0.02 pounds
8.0 g / 0.1 N
30 mm Stal (~0.2) 0.00 kg / 0.00 pounds
2.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
The following data indicates the estimated weight limit required to initiate the downward movement of the magnet vertically against a upright metal surface (assuming standard friction). This value is relative to the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MPL 30x10x8 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
3.64 kg / 8.02 pounds
3639.0 g / 35.7 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
2.43 kg / 5.35 pounds
2426.0 g / 23.8 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.21 kg / 2.67 pounds
1213.0 g / 11.9 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
6.07 kg / 13.37 pounds
6065.0 g / 59.5 N
When hanging a holder on a upright plane (e.g., a board), it you can count on barely approx. 1/5 of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that holders slip easier than they detach. Designing a vertical fastening? Note that the shear force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will slide down under a significantly smaller load. Using a rubber pad can significantly raise the stability.

Table 4: Steel thickness (substrate influence) - sheet metal selection
MPL 30x10x8 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.61 kg / 1.34 pounds
606.5 g / 5.9 N
1 mm
13%
 1.52 kg / 3.34 pounds
1516.3 g / 14.9 N
2 mm
25%
 3.03 kg / 6.69 pounds
3032.5 g / 29.7 N
3 mm
38%
 4.55 kg / 10.03 pounds
4548.8 g / 44.6 N
5 mm
63%
 7.58 kg / 16.71 pounds
7581.3 g / 74.4 N
10 mm
100%
 12.13 kg / 26.74 pounds
12130.0 g / 119.0 N
11 mm
100%
 12.13 kg / 26.74 pounds
12130.0 g / 119.0 N
12 mm
100%
 12.13 kg / 26.74 pounds
12130.0 g / 119.0 N
A thin metal plate is unable to focus the entire magnetic field, which weakens actual performance of the holder. Should you install a neodymium to a too thin substrate, the field will pass right through and the holding will be smaller. To utilize the maximum of this magnet's power, you require a sufficiently solid backing of steel. The material oversaturation means that on thin elements (e.g., thin profiles), the product works worse. We suggest choosing the steel dimension according to the table below.

Table 5: Thermal resistance (stability) - power drop
MPL 30x10x8 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 12.13 kg / 26.74 pounds
12130.0 g / 119.0 N
 OK
40 °C -2.2% 11.86 kg / 26.15 pounds
11863.1 g / 116.4 N
 OK
60 °C -4.4% 11.60 kg / 25.57 pounds
11596.3 g / 113.8 N
80 °C -6.6% 11.33 kg / 24.98 pounds
11329.4 g / 111.1 N
100 °C -28.8% 8.64 kg / 19.04 pounds
8636.6 g / 84.7 N
Classic neodymiums change their properties strength above the temperature limit. Avoid high temperatures – excessive heat can irreversibly destroy this magnet. With every degree above norm, the neodymium's capacity temporarily decreases. Avoid using this magnet near heat sources higher than its working range. Exceeding the critical threshold will lead to permanent loss of magnetic properties.
*Technical advisory: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than taller cylinders. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MPL 30x10x8 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 33.78 kg / 74.46 pounds
5 382 Gs
5.07 kg / 11.17 pounds
5066 g / 49.7 N
 N/A
1 mm 29.33 kg / 64.66 pounds
7 964 Gs
4.40 kg / 9.70 pounds
4399 g / 43.2 N
 26.39 kg / 58.19 pounds
~0 Gs
2 mm 25.09 kg / 55.31 pounds
7 366 Gs
3.76 kg / 8.30 pounds
3763 g / 36.9 N
 22.58 kg / 49.78 pounds
~0 Gs
3 mm 21.25 kg / 46.85 pounds
6 780 Gs
3.19 kg / 7.03 pounds
3188 g / 31.3 N
 19.13 kg / 42.17 pounds
~0 Gs
5 mm 14.97 kg / 32.99 pounds
5 689 Gs
2.24 kg / 4.95 pounds
2245 g / 22.0 N
 13.47 kg / 29.70 pounds
~0 Gs
10 mm 6.11 kg / 13.48 pounds
3 636 Gs
0.92 kg / 2.02 pounds
917 g / 9.0 N
 5.50 kg / 12.13 pounds
~0 Gs
20 mm 1.26 kg / 2.78 pounds
1 651 Gs
0.19 kg / 0.42 pounds
189 g / 1.9 N
 1.13 kg / 2.50 pounds
~0 Gs
50 mm 0.04 kg / 0.10 pounds
308 Gs
0.01 kg / 0.01 pounds
7 g / 0.1 N
 0.04 kg / 0.09 pounds
~0 Gs
60 mm 0.02 kg / 0.04 pounds
203 Gs
0.00 kg / 0.01 pounds
3 g / 0.0 N
 0.02 kg / 0.04 pounds
~0 Gs
70 mm 0.01 kg / 0.02 pounds
140 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.01 pounds
100 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.01 pounds
74 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
56 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
 0.00 kg / 0.00 pounds
~0 Gs
Two magnets attract each other from a much further distance than a magnet and sheet combination. Such a system of magnet-to-magnet generates a stronger field and a larger range of operation. Want to build a strong closure? Apply two magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still large.
*Flux density between like poles is approximately ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
* Results apply to shear force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - precautionary measures
MPL 30x10x8 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 9.5 cm
Hearing aid 10 Gs (1.0 mT) 7.5 cm
Mechanical watch 20 Gs (2.0 mT) 6.0 cm
Phone / Smartphone 40 Gs (4.0 mT) 4.5 cm
Remote 50 Gs (5.0 mT) 4.0 cm
Payment card 400 Gs (40.0 mT) 2.0 cm
HDD hard drive 600 Gs (60.0 mT) 1.5 cm
Extremely neodym field poses a serious hazard to electronic devices and medical implants. These NdFeB products generate a flux that disrupts operation of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and housings. Exceptional care must be taken by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MPL 30x10x8 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 22.36 km/h
(6.21 m/s)
 0.35 J
30 mm 22.92 km/h
(6.37 m/s)
 0.36 J
50 mm 22.93 km/h
(6.37 m/s)
 0.37 J
100 mm 22.94 km/h
(6.37 m/s)
 0.37 J
NdFeB products are prone to chipping – a strong collision with metal can result in shattering. Watch the impact speed – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or painful pinches to skin. Be sure to control the product during mounting so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when working with large magnets.

Table 9: Coating parameters (durability)
MPL 30x10x8 / 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)
Neodymium magnets are highly susceptible to corrosion without proper protection. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Electrical data (Pc)
MPL 30x10x8 / N38

Parameter Value SI Unit / Description
Magnetic Flux 12 138 Mx 121.4 µWb
Pc Coefficient 0.51 Low (Flat)
Total magnetic flux passing through the magnet pole. Essential parameter when building generators as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MPL 30x10x8 / N38

Environment Effective steel pull Effect
Air (land) 12.13 kg Standard
Water (riverbed) 13.89 kg
(+1.76 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Note: On a vertical surface, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Steel saturation

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

3. Power loss vs temp

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.51

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.

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%

Environmental data

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: 020139-2026
Quick Unit Converter

Magnet pull force

Magnetic Field

Type your figure in one of the inputs, and all other values will recalculate instantly.

Check out also offers

MW 8x10 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 8x10 / N38 - cylindrical magnet

1.501 zł brutto / pcs
MW 12x1.5 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 12x1.5 / N38 - cylindrical magnet

0.431 zł brutto / pcs
UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder
Product available Ships today (order by 14:00)

UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

599.99 zł brutto / pcs
NC NeoCube fi 5 mm kuleczki kolorowe / N38 - neocube
Product available Ships today (order by 14:00)

NC NeoCube fi 5 mm kuleczki kolorowe / N38 - neocube

49.99 zł brutto / pcs
Model MPL 30x10x8 / N38 features a low profile and professional pulling force, making it an ideal solution for building separators and machines. This rectangular block with a force of 119.04 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating protects it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is sliding the magnets along their largest connection plane (using e.g., the edge of a table), which is easier than trying to tear them apart directly. Watch your fingers! Magnets with a force of 12.13 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
They constitute a key element in the production of wind generators and material handling systems. Thanks to the flat surface and high force (approx. 12.13 kg), they are ideal as closers in furniture making and mounting elements in automation. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.
Cyanoacrylate glues (super glue type) are good only for small magnets; for larger plates, we recommend resins. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Remember to roughen and wash the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
Standardly, the MPL 30x10x8 / N38 model is magnetized through the thickness (dimension 8 mm), which means that the N and S poles are located on its largest, flat surfaces. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. This is the most popular configuration for block magnets used in separators and holders.
This model is characterized by dimensions 30x10x8 mm, which, at a weight of 18 g, makes it an element with impressive energy density. It is a magnetic block with dimensions 30x10x8 mm and a self-weight of 18 g, ready to work at temperatures up to 80°C. The product meets the standards for N38 grade magnets.

Strengths and weaknesses of rare earth magnets.

Benefits

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:
  • Their power is maintained, and after approximately ten years it drops only by ~1% (according to research),
  • Magnets effectively protect themselves against demagnetization caused by ambient magnetic noise,
  • The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • They show high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Thanks to modularity in constructing and the ability to customize to individual projects,
  • Key role in high-tech industry – they serve a role in computer drives, motor assemblies, medical devices, also technologically advanced constructions.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • We suggest cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated forms.
  • Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Holding force of 12.13 kg is a result of laboratory testing performed under specific, ideal conditions:
  • on a base made of structural steel, optimally conducting the magnetic field
  • whose transverse dimension reaches at least 10 mm
  • with an ground contact surface
  • without any insulating layer between the magnet and steel
  • during detachment in a direction vertical to the plane
  • at room temperature

Determinants of practical lifting force of a magnet

Real force is affected by working environment parameters, mainly (from most important):
  • Clearance – the presence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
  • Steel type – mild steel attracts best. Higher carbon content reduce magnetic properties and lifting capacity.
  • Base smoothness – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets
Respect the power

Use magnets with awareness. Their immense force can shock even professionals. Be vigilant and do not underestimate their power.

Warning for heart patients

People with a heart stimulator must maintain an safe separation from magnets. The magnetic field can disrupt the operation of the life-saving device.

Keep away from children

These products are not intended for children. Eating a few magnets can lead to them attracting across intestines, which poses a severe health hazard and necessitates immediate surgery.

Bone fractures

Big blocks can crush fingers instantly. Under no circumstances put your hand between two attracting surfaces.

Heat sensitivity

Keep cool. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, ask us about HT versions (H, SH, UH).

Precision electronics

Be aware: neodymium magnets produce a field that confuses precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.

Machining danger

Powder generated during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Nickel allergy

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness happens, cease handling magnets and use protective gear.

Magnets are brittle

NdFeB magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them breaking into shards.

Threat to electronics

Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Security! Want to know more? Check our post: Are neodymium magnets dangerous?