Product available Ships today (order by 14:00)

MPL 30x15x10 / N38 - lamellar magnet

lamellar magnet

Catalog no 020389

GTIN/EAN: 5906301811886

5.00

length

30 mm [±0,1 mm]

Width

15 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

33.75 g

Magnetization Direction

↑ axial

Load capacity

16.84 kg / 165.22 N

Magnetic Induction

413.45 mT / 4135 Gs

Coating

[NiCuNi] Nickel

24.48 with VAT / pcs + price for transport

19.90 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
19.90 ZŁ
24.48 ZŁ
price from 40 pcs
18.71 ZŁ
23.01 ZŁ
price from 130 pcs
17.51 ZŁ
21.54 ZŁ
Need help making a decision?

Call us now +48 888 99 98 98 or drop us a message via form the contact page.
Strength and appearance of magnetic components can be reviewed using our online calculation tool.

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

Technical - MPL 30x15x10 / N38 - lamellar magnet

Specification / characteristics - MPL 30x15x10 / N38 - lamellar magnet

properties
properties values
Cat. no. 020389
GTIN/EAN 5906301811886
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 15 mm [±0,1 mm]
Height 10 mm [±0,1 mm]
Weight 33.75 g
Magnetization Direction ↑ axial
Load capacity ~ ? 16.84 kg / 165.22 N
Magnetic Induction ~ ? 413.45 mT / 4135 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 30x15x10 / N38 - lamellar 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 analysis of the assembly - technical parameters

Presented data are the outcome of a physical analysis. Results were calculated on algorithms for the class Nd2Fe14B. Operational performance might slightly differ from theoretical values. Treat these data as a supplementary guide when designing systems.

Table 1: Static force (force vs distance) - power drop
MPL 30x15x10 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 4133 Gs
413.3 mT
16.84 kg / 37.13 LBS
16840.0 g / 165.2 N
dangerous!
1 mm 3754 Gs
375.4 mT
13.89 kg / 30.62 LBS
13889.5 g / 136.3 N
dangerous!
2 mm 3365 Gs
336.5 mT
11.16 kg / 24.60 LBS
11159.2 g / 109.5 N
dangerous!
3 mm 2988 Gs
298.8 mT
8.80 kg / 19.41 LBS
8803.6 g / 86.4 N
medium risk
5 mm 2321 Gs
232.1 mT
5.31 kg / 11.71 LBS
5309.9 g / 52.1 N
medium risk
10 mm 1225 Gs
122.5 mT
1.48 kg / 3.26 LBS
1480.1 g / 14.5 N
safe
15 mm 684 Gs
68.4 mT
0.46 kg / 1.02 LBS
461.6 g / 4.5 N
safe
20 mm 409 Gs
40.9 mT
0.16 kg / 0.36 LBS
164.8 g / 1.6 N
safe
30 mm 173 Gs
17.3 mT
0.03 kg / 0.07 LBS
29.6 g / 0.3 N
safe
50 mm 50 Gs
5.0 mT
0.00 kg / 0.01 LBS
2.4 g / 0.0 N
safe

Table 2: Shear load (wall)
MPL 30x15x10 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 3.37 kg / 7.43 LBS
3368.0 g / 33.0 N
1 mm Stal (~0.2) 2.78 kg / 6.12 LBS
2778.0 g / 27.3 N
2 mm Stal (~0.2) 2.23 kg / 4.92 LBS
2232.0 g / 21.9 N
3 mm Stal (~0.2) 1.76 kg / 3.88 LBS
1760.0 g / 17.3 N
5 mm Stal (~0.2) 1.06 kg / 2.34 LBS
1062.0 g / 10.4 N
10 mm Stal (~0.2) 0.30 kg / 0.65 LBS
296.0 g / 2.9 N
15 mm Stal (~0.2) 0.09 kg / 0.20 LBS
92.0 g / 0.9 N
20 mm Stal (~0.2) 0.03 kg / 0.07 LBS
32.0 g / 0.3 N
30 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
MPL 30x15x10 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
5.05 kg / 11.14 LBS
5052.0 g / 49.6 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
3.37 kg / 7.43 LBS
3368.0 g / 33.0 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.68 kg / 3.71 LBS
1684.0 g / 16.5 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
8.42 kg / 18.56 LBS
8420.0 g / 82.6 N

Table 4: Steel thickness (saturation) - sheet metal selection
MPL 30x15x10 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
0.84 kg / 1.86 LBS
842.0 g / 8.3 N
1 mm
13%
2.11 kg / 4.64 LBS
2105.0 g / 20.7 N
2 mm
25%
4.21 kg / 9.28 LBS
4210.0 g / 41.3 N
3 mm
38%
6.31 kg / 13.92 LBS
6315.0 g / 62.0 N
5 mm
63%
10.53 kg / 23.20 LBS
10525.0 g / 103.3 N
10 mm
100%
16.84 kg / 37.13 LBS
16840.0 g / 165.2 N
11 mm
100%
16.84 kg / 37.13 LBS
16840.0 g / 165.2 N
12 mm
100%
16.84 kg / 37.13 LBS
16840.0 g / 165.2 N

Table 5: Thermal resistance (stability) - power drop
MPL 30x15x10 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 16.84 kg / 37.13 LBS
16840.0 g / 165.2 N
OK
40 °C -2.2% 16.47 kg / 36.31 LBS
16469.5 g / 161.6 N
OK
60 °C -4.4% 16.10 kg / 35.49 LBS
16099.0 g / 157.9 N
80 °C -6.6% 15.73 kg / 34.68 LBS
15728.6 g / 154.3 N
100 °C -28.8% 11.99 kg / 26.43 LBS
11990.1 g / 117.6 N

Table 6: Two magnets (attraction) - forces in the system
MPL 30x15x10 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 47.39 kg / 104.48 LBS
5 357 Gs
7.11 kg / 15.67 LBS
7109 g / 69.7 N
N/A
1 mm 43.23 kg / 95.30 LBS
7 895 Gs
6.48 kg / 14.29 LBS
6484 g / 63.6 N
38.90 kg / 85.77 LBS
~0 Gs
2 mm 39.09 kg / 86.17 LBS
7 507 Gs
5.86 kg / 12.93 LBS
5863 g / 57.5 N
35.18 kg / 77.56 LBS
~0 Gs
3 mm 35.13 kg / 77.45 LBS
7 117 Gs
5.27 kg / 11.62 LBS
5270 g / 51.7 N
31.62 kg / 69.70 LBS
~0 Gs
5 mm 27.95 kg / 61.61 LBS
6 348 Gs
4.19 kg / 9.24 LBS
4192 g / 41.1 N
25.15 kg / 55.45 LBS
~0 Gs
10 mm 14.94 kg / 32.94 LBS
4 642 Gs
2.24 kg / 4.94 LBS
2242 g / 22.0 N
13.45 kg / 29.65 LBS
~0 Gs
20 mm 4.17 kg / 9.18 LBS
2 451 Gs
0.62 kg / 1.38 LBS
625 g / 6.1 N
3.75 kg / 8.26 LBS
~0 Gs
50 mm 0.19 kg / 0.41 LBS
519 Gs
0.03 kg / 0.06 LBS
28 g / 0.3 N
0.17 kg / 0.37 LBS
~0 Gs
60 mm 0.08 kg / 0.18 LBS
347 Gs
0.01 kg / 0.03 LBS
13 g / 0.1 N
0.08 kg / 0.17 LBS
~0 Gs
70 mm 0.04 kg / 0.09 LBS
242 Gs
0.01 kg / 0.01 LBS
6 g / 0.1 N
0.04 kg / 0.08 LBS
~0 Gs
80 mm 0.02 kg / 0.05 LBS
175 Gs
0.00 kg / 0.01 LBS
3 g / 0.0 N
0.02 kg / 0.04 LBS
~0 Gs
90 mm 0.01 kg / 0.03 LBS
130 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
0.01 kg / 0.02 LBS
~0 Gs
100 mm 0.01 kg / 0.02 LBS
99 Gs
0.00 kg / 0.00 LBS
1 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Protective zones (electronics) - precautionary measures
MPL 30x15x10 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 12.0 cm
Hearing aid 10 Gs (1.0 mT) 9.5 cm
Mechanical watch 20 Gs (2.0 mT) 7.5 cm
Mobile device 40 Gs (4.0 mT) 5.5 cm
Remote 50 Gs (5.0 mT) 5.0 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm

Table 8: Collisions (cracking risk) - warning
MPL 30x15x10 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 23.73 km/h
(6.59 m/s)
0.73 J
30 mm 39.06 km/h
(10.85 m/s)
1.99 J
50 mm 50.38 km/h
(13.99 m/s)
3.30 J
100 mm 71.24 km/h
(19.79 m/s)
6.61 J

Table 9: Corrosion resistance
MPL 30x15x10 / 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)
MPL 30x15x10 / N38

Parameter Value SI Unit / Description
Magnetic Flux 18 390 Mx 183.9 µWb
Pc Coefficient 0.52 Low (Flat)

Table 11: Hydrostatics and buoyancy
MPL 30x15x10 / N38

Environment Effective steel pull Effect
Air (land) 16.84 kg Standard
Water (riverbed) 19.28 kg
(+2.44 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
1. Sliding resistance

*Note: On a vertical surface, the magnet holds just a fraction of its max power.

2. Steel thickness impact

*Thin steel (e.g. computer case) drastically weakens 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) = 0.52

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 and environmental data
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
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: 020389-2026
Measurement Calculator
Force (pull)

Magnetic Induction

View more products

This product is an extremely strong plate magnet made of NdFeB material, which, with dimensions of 30x15x10 mm and a weight of 33.75 g, guarantees the highest quality connection. This magnetic block with a force of 165.22 N is ready for shipment in 24h, allowing for rapid realization of your project. Additionally, its Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, giving it an aesthetic appearance.
The key to success is shifting 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 16.84 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.
Plate magnets MPL 30x15x10 / N38 are the foundation for many industrial devices, such as magnetic separators and linear motors. Thanks to the flat surface and high force (approx. 16.84 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.
For mounting flat magnets MPL 30x15x10 / N38, we recommend utilizing strong epoxy glues (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. Double-sided tape cushions vibrations, which is an advantage when mounting in moving elements. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).
Standardly, the MPL 30x15x10 / N38 model is magnetized axially (dimension 10 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. Such a pole arrangement ensures maximum holding capacity when pressing against the sheet, creating a closed magnetic circuit.
This model is characterized by dimensions 30x15x10 mm, which, at a weight of 33.75 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 16.84 kg (force ~165.22 N), which, with such a compact shape, proves the high power of the material. The protective [NiCuNi] coating secures the magnet against corrosion.

Strengths and weaknesses of neodymium magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
  • They maintain their magnetic properties even under strong external field,
  • By covering with a lustrous coating of silver, the element gains an aesthetic look,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
  • Thanks to freedom in designing and the capacity to customize to individual projects,
  • Key role in advanced technology sectors – they find application in computer drives, motor assemblies, diagnostic systems, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in small systems

Cons

Disadvantages of neodymium magnets:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in producing nuts and complex forms in magnets, we propose using a housing - magnetic mount.
  • Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Additionally, small elements of these magnets can complicate diagnosis medical when they are in the body.
  • With mass production the cost of neodymium magnets can be a barrier,

Pull force analysis

Optimal lifting capacity of a neodymium magnetwhat affects it?

The lifting capacity listed is a result of laboratory testing performed under specific, ideal conditions:
  • using a sheet made of high-permeability steel, acting as a circuit closing element
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • characterized by even structure
  • under conditions of no distance (metal-to-metal)
  • for force acting at a right angle (in the magnet axis)
  • in stable room temperature

Determinants of lifting force in real conditions

Holding efficiency is influenced by working environment parameters, mainly (from priority):
  • Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Metal type – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal weaken the grip.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, 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, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Moreover, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Safe handling of neodymium magnets
Skin irritation risks

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness occurs, immediately stop handling magnets and wear gloves.

Do not drill into magnets

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Do not underestimate power

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

GPS and phone interference

Note: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a separation from your mobile, device, and GPS.

Keep away from computers

Data protection: Strong magnets can damage payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Fragile material

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Swallowing risk

Strictly keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are very dangerous.

Crushing risk

Watch your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Do not overheat magnets

Keep cool. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, look for HT versions (H, SH, UH).

Life threat

Individuals with a ICD have to maintain an absolute distance from magnets. The magnetism can stop the operation of the implant.

Attention! Details about risks in the article: Safety of working with magnets.