← 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 details »

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 of the product - 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

Physical simulation of the magnet - data

Presented data are the direct effect of a mathematical simulation. Values rely on models for the class Nd2Fe14B. Operational parameters may deviate from the simulation results. Please consider these data as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - interaction chart
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
 critical level
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
 safe
15 mm 431 Gs
43.1 mT
 0.12 kg / 0.27 pounds
123.4 g / 1.2 N
 safe
20 mm 248 Gs
24.8 mT
 0.04 kg / 0.09 pounds
41.0 g / 0.4 N
 safe
30 mm 101 Gs
10.1 mT
 0.01 kg / 0.02 pounds
6.8 g / 0.1 N
 safe
50 mm 28 Gs
2.8 mT
 0.00 kg / 0.00 pounds
0.5 g / 0.0 N
 safe
Pulling power decreases sharply per each millimeter of gap. Keep in mind that even the smallest gap (e.g., contamination, paint, rust) noticeably reduces the pull force. Magnets work most effectively at the point of direct contact; gap drastically cuts the force. Observe how quickly the pull force drop, when the magnet does not touch tightly to the metal substrate. When designing the mounting, eliminate unnecessary gaps.

Table 2: Sliding hold (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
This section shows the estimated holding capacity needed to start the sliding of the magnet down against a upright metal surface (assuming standard friction). The holding force is a function of the distance between the magnet and the surface.

Table 3: Vertical assembly (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 element on a upright surface (e.g., a board), it will only hold just about 1/5 of its nominal power. Gravity as well as a weak degree of grip influence the fact that holders slide down faster than they pop off the substrate. Designing a hanger? Note that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the holder will slide down under a noticeably lighter cargo. Utilizing a rubberized pad can significantly raise the stability.

Table 4: Steel thickness (saturation) - power losses
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 sheet is incapable of absorb the full magnetic flux, which squanders power of the holder. If you mount a strong magnet to a too thin substrate, the magnetism will penetrate right through and the pull force will drop sharply. To squeeze the maximum of this neodymium's potential, you require a sufficiently solid backing of steel. The saturation phenomenon means that on delicate walls (e.g., car bodies), the magnet works worse. We recommend selecting the steel dimension according to the table below.

Table 5: Thermal stability (material behavior) - thermal limit
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
Ordinary NdFeB products lose parameters after exceeding the maximum temperature. Avoid high temperatures – heat can permanently damage this magnet. With increasing heat, the neodymium's force briefly lowers. Do not use this magnet near heat sources exceeding its working range. Too high temperature will lead to irreversible degradation of magnetism.
*Important note: Heat tolerance depends not only on the material grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization sooner compared to rod magnets. Red status in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (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 interact from a wider radius than a magnet and sheet setup. The setup of magnet-to-magnet generates a stronger field and a wider radius of operation. Planning to create a strong closure? Use a pair of magnets instead of one magnet and a steel. Be careful that when bringing together two magnets, the impact force is huge. The levitation is a bit weaker than the connection force, but still large.
*Field value between like poles is approximately ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
* Results apply to friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Protective zones (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
Timepiece 20 Gs (2.0 mT) 6.0 cm
Mobile device 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 electronics and pacemakers. These neodymiums generate a field that disrupts operation of sensitive medical devices. Remember: the invisible magnetic field penetrates the body and housings. Increased vigilance must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (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
Neodymium magnets are prone to chipping – a collision with steel causes immediate chipping. Pay attention to connection velocity – a magnet released freely becomes dangerous. Impact energy can trigger coating fragments or painful pinches to skin. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Wear safety glasses when working with powerful specimens.

Table 9: Corrosion resistance
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)
The following table defines the conditions under which this product can be safely used. Moisture resistance is crucial for installations in bathrooms or outdoors.

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)
Flux value emitted by the pole surface. Essential parameter for generator designers as well as sensors. The Pc coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
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%
Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!
Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Wall mount (shear)

*Caution: On a vertical wall, the magnet holds just approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

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

3. Thermal stability

*For N38 grade, the safety 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.

Engineering data and GPSR

Chemical composition

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: 020139-2026
Magnet Unit Converter

Force (pull)

Magnetic Field

Put your value in a single field to receive results for all other units right away.

Other deals

MW 6x3 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 6x3 / N38 - cylindrical magnet

0.381 zł brutto / pcs
SM 32x225 [2xM8] / N42 - magnetic separator
Product available Ships today (order by 14:00)

SM 32x225 [2xM8] / N42 - magnetic separator

848.70 zł brutto / pcs
MW 70x30 / N38 - cylindrical magnet
Product available Ships today (order by 14:00)

MW 70x30 / N38 - cylindrical magnet

317.17 zł brutto / pcs
SM 32x450 [2xM8] / N52 - magnetic separator
Product available Ships today (order by 14:00)

SM 32x450 [2xM8] / N52 - magnetic separator

1414.50 zł brutto / pcs
Component MPL 30x10x8 / N38 features a low profile and professional pulling force, making it a perfect solution for building separators and machines. As a block magnet with high power (approx. 12.13 kg), this product is available off-the-shelf from our warehouse in Poland. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.
Separating strong flat magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. To separate the MPL 30x10x8 / N38 model, firmly slide one magnet over the edge of the other until the attraction force decreases. We recommend extreme caution, because after separation, the magnets may want to violently snap back together, which threatens pinching the skin. Never use metal tools for prying, as the brittle NdFeB material may chip and damage your eyes.
They constitute a key element in the production of wind generators and material handling systems. They work great as fasteners under tiles, wood, or glass. Customers often choose this model for workshop organization on strips and for advanced DIY and modeling projects, where precision and power count.
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 clean and degrease the magnet surface before gluing, which significantly increases the adhesion of the glue to the nickel coating.
The magnetic axis runs through the shortest dimension, which is typical for gripper magnets. Thanks to this, it works best when "sticking" to sheet metal or another magnet with a large surface area. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
The presented product is a neodymium magnet with precisely defined parameters: 30 mm (length), 10 mm (width), and 8 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 12.13 kg (force ~119.04 N), which, with such a flat shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Advantages and disadvantages of neodymium magnets.

Advantages

Besides their high retention, neodymium magnets are valued for these benefits:
  • They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
  • They maintain their magnetic properties even under close interference source,
  • In other words, due to the smooth layer of nickel, the element gains a professional look,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • 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...
  • Thanks to freedom in forming and the ability to adapt to individual projects,
  • Wide application in modern industrial fields – they serve a role in hard drives, electromotive mechanisms, diagnostic systems, as well as multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Drawbacks and weaknesses of neodymium magnets and proposals for their use:
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • 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 producing nuts and complex forms in magnets, we propose using cover - magnetic holder.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Additionally, small elements of these magnets can complicate diagnosis medical when they are in the body.
  • With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

Best holding force of the magnet in ideal parameters – what contributes to it?

Breakaway force was defined for optimal configuration, including:
  • with the application of a sheet made of special test steel, ensuring full magnetic saturation
  • whose transverse dimension is min. 10 mm
  • characterized by even structure
  • without the slightest insulating layer between the magnet and steel
  • under axial force direction (90-degree angle)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Please note that the application force will differ depending on elements below, in order of importance:
  • Clearance – the presence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note 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.
  • Plate thickness – insufficiently thick steel does not close the flux, causing part of the power to be lost to the other side.
  • Material type – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Surface quality – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, however under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Precautions when working with NdFeB magnets
Fire warning

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Shattering risk

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Data carriers

Do not bring magnets near a purse, laptop, or screen. The magnetic field can permanently damage these devices and wipe information from cards.

Demagnetization risk

Keep cool. Neodymium magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Do not underestimate power

Be careful. Rare earth magnets act from a distance and connect with massive power, often quicker than you can move away.

Skin irritation risks

A percentage of the population experience a contact allergy to nickel, which is the standard coating for neodymium magnets. Frequent touching might lead to a rash. We strongly advise wear safety gloves.

Keep away from electronics

Navigation devices and smartphones are highly sensitive to magnetic fields. Close proximity with a strong magnet can decalibrate the internal compass in your phone.

Product not for children

Always keep magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are fatal.

Pacemakers

Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Crushing risk

Large magnets can smash fingers instantly. Do not put your hand betwixt two strong magnets.

Safety First! Need more info? Check our post: Why are neodymium magnets dangerous?