Product available Ships tomorrow

MPL 40x20x5 / N38 - lamellar magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

lamellar magnet

Catalog no 020160

GTIN/EAN: 5906301811664

5.00

length

40 mm [±0,1 mm]

Width

20 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

30 g

Magnetization Direction

↑ axial

Load capacity

10.67 kg / 104.63 N

Magnetic Induction

205.27 mT / 2053 Gs

Coating

[NiCuNi] Nickel

technical specifications »

12.24 ZŁ with VAT / pcs + price for transport

9.95 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

9.95 ZŁ

12.24 ZŁ

price from 100 pcs

9.35 ZŁ

11.50 ZŁ

price from 300 pcs

8.76 ZŁ

10.77 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Call us +48 22 499 98 98 alternatively let us know by means of request form the contact form page.
Weight along with appearance of a neodymium magnet can be estimated using our modular calculator.

Order by 14:00 and we’ll ship today!

Technical parameters of the product - MPL 40x20x5 / N38 - lamellar magnet

Specification / characteristics - MPL 40x20x5 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020160
GTIN/EAN	5906301811664
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	40 mm [±0,1 mm]
Width	20 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	30 g
Magnetization Direction	↑ axial
Load capacity ~ ?	10.67 kg / 104.63 N
Magnetic Induction ~ ?	205.27 mT / 2053 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 40x20x5 / 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

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

Physical simulation of the product - technical parameters

The following data constitute the result of a engineering calculation. Results were calculated on models for the class Nd₂Fe₁₄B. Operational performance might slightly deviate from the simulation results. Treat these calculations as a preliminary roadmap when designing systems.

Table 1: Static pull force (force vs gap) - power drop
MPL 40x20x5 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2052 Gs 205.2 mT	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N	critical level
1 mm	1956 Gs 195.6 mT	9.69 kg / 21.37 lbs 9693.2 g / 95.1 N	medium risk
2 mm	1839 Gs 183.9 mT	8.57 kg / 18.89 lbs 8570.5 g / 84.1 N	medium risk
3 mm	1711 Gs 171.1 mT	7.41 kg / 16.34 lbs 7413.1 g / 72.7 N	medium risk
5 mm	1444 Gs 144.4 mT	5.28 kg / 11.65 lbs 5282.9 g / 51.8 N	medium risk
10 mm	888 Gs 88.8 mT	2.00 kg / 4.40 lbs 1996.5 g / 19.6 N	weak grip
15 mm	545 Gs 54.5 mT	0.75 kg / 1.66 lbs 752.0 g / 7.4 N	weak grip
20 mm	346 Gs 34.6 mT	0.30 kg / 0.67 lbs 302.9 g / 3.0 N	weak grip
30 mm	156 Gs 15.6 mT	0.06 kg / 0.14 lbs 61.9 g / 0.6 N	weak grip
50 mm	46 Gs 4.6 mT	0.01 kg / 0.01 lbs 5.4 g / 0.1 N	weak grip

Magnetic force drops sharply with every subsequent millimeter of gap. Keep in mind that even a very thin break (e.g., dirt, paint, rust) significantly diminishes the holding power. Neodymiums operate most effectively during direct contact; distance kills the power. Analyze how quickly the load capacity fall, when the magnet does not adhere flatly to the steel surface. When planning the assembly, avoid redundant distances.

Table 2: Vertical force (vertical surface)
MPL 40x20x5 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	2.13 kg / 4.70 lbs 2134.0 g / 20.9 N
1 mm	Stal (~0.2)	1.94 kg / 4.27 lbs 1938.0 g / 19.0 N
2 mm	Stal (~0.2)	1.71 kg / 3.78 lbs 1714.0 g / 16.8 N
3 mm	Stal (~0.2)	1.48 kg / 3.27 lbs 1482.0 g / 14.5 N
5 mm	Stal (~0.2)	1.06 kg / 2.33 lbs 1056.0 g / 10.4 N
10 mm	Stal (~0.2)	0.40 kg / 0.88 lbs 400.0 g / 3.9 N
15 mm	Stal (~0.2)	0.15 kg / 0.33 lbs 150.0 g / 1.5 N
20 mm	Stal (~0.2)	0.06 kg / 0.13 lbs 60.0 g / 0.6 N
30 mm	Stal (~0.2)	0.01 kg / 0.03 lbs 12.0 g / 0.1 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N

This section defines the estimated shear load needed to initiate the shifting of the magnet down on a upright steel wall (considering typical friction). The holding force is a function of the distance between the magnet and the surface.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x5 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	3.20 kg / 7.06 lbs 3201.0 g / 31.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.13 kg / 4.70 lbs 2134.0 g / 20.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.07 kg / 2.35 lbs 1067.0 g / 10.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.34 kg / 11.76 lbs 5335.0 g / 52.3 N

When placing a magnet on a upright plane (e.g., a board), it will only hold only about 20%-30% of its maximum pull force. Gravitational force and a weak degree of grip influence the fact that products slip faster than they pop off the substrate. Want to create a hanger? Consider that the shear force is noticeably lower than the maximum static pull force. On a smooth steel, the element will slip down under a significantly smaller cargo. Application of an anti-slip pad can drastically increase the grip.

Table 4: Steel thickness (saturation) - power losses
MPL 40x20x5 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	0.53 kg / 1.18 lbs 533.5 g / 5.2 N
1 mm	13%	1.33 kg / 2.94 lbs 1333.8 g / 13.1 N
2 mm	25%	2.67 kg / 5.88 lbs 2667.5 g / 26.2 N
3 mm	38%	4.00 kg / 8.82 lbs 4001.2 g / 39.3 N
5 mm	63%	6.67 kg / 14.70 lbs 6668.8 g / 65.4 N
10 mm	100%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N
11 mm	100%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N
12 mm	100%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N

A thin sheet is not enough to take in the entire magnetic field, which squanders power of the holder. If you mount a strong magnet to a thin surface, the flux will pass right through and the pull force will drop sharply. To achieve the maximum of this neodymium's power, you require a sufficiently solid backing of steel. The material oversaturation means that on thin elements (e.g., thin profiles), the product shows lower pull force. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal stability (stability) - power drop
MPL 40x20x5 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	10.67 kg / 23.52 lbs 10670.0 g / 104.7 N	OK
40 °C	-2.2%	10.44 kg / 23.01 lbs 10435.3 g / 102.4 N	OK
60 °C	-4.4%	10.20 kg / 22.49 lbs 10200.5 g / 100.1 N
80 °C	-6.6%	9.97 kg / 21.97 lbs 9965.8 g / 97.8 N
100 °C	-28.8%	7.60 kg / 16.75 lbs 7597.0 g / 74.5 N

Classic neodymiums change their properties power after exceeding the maximum temperature. Protect against heat – heat can permanently destroy this product. As the temperature rises, the neodymium's power briefly drops. Refrain from using this product in hot environments exceeding its operating temperature limit. Too high temperature will result in irreversible degradation of magnetic properties.

*Engineering note: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. The danger warning in the table indicates a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - field range
MPL 40x20x5 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	20.78 kg / 45.80 lbs 3 495 Gs	3.12 kg / 6.87 lbs 3116 g / 30.6 N	N/A
1 mm	19.88 kg / 43.83 lbs 4 015 Gs	2.98 kg / 6.57 lbs 2982 g / 29.3 N	17.89 kg / 39.44 lbs ~0 Gs
2 mm	18.87 kg / 41.61 lbs 3 912 Gs	2.83 kg / 6.24 lbs 2831 g / 27.8 N	16.99 kg / 37.45 lbs ~0 Gs
3 mm	17.80 kg / 39.24 lbs 3 800 Gs	2.67 kg / 5.89 lbs 2670 g / 26.2 N	16.02 kg / 35.32 lbs ~0 Gs
5 mm	15.56 kg / 34.30 lbs 3 552 Gs	2.33 kg / 5.14 lbs 2334 g / 22.9 N	14.00 kg / 30.87 lbs ~0 Gs
10 mm	10.29 kg / 22.68 lbs 2 888 Gs	1.54 kg / 3.40 lbs 1543 g / 15.1 N	9.26 kg / 20.41 lbs ~0 Gs
20 mm	3.89 kg / 8.57 lbs 1 776 Gs	0.58 kg / 1.29 lbs 583 g / 5.7 N	3.50 kg / 7.71 lbs ~0 Gs
50 mm	0.26 kg / 0.57 lbs 456 Gs	0.04 kg / 0.08 lbs 39 g / 0.4 N	0.23 kg / 0.51 lbs ~0 Gs
60 mm	0.12 kg / 0.27 lbs 313 Gs	0.02 kg / 0.04 lbs 18 g / 0.2 N	0.11 kg / 0.24 lbs ~0 Gs
70 mm	0.06 kg / 0.13 lbs 221 Gs	0.01 kg / 0.02 lbs 9 g / 0.1 N	0.05 kg / 0.12 lbs ~0 Gs
80 mm	0.03 kg / 0.07 lbs 162 Gs	0.00 kg / 0.01 lbs 5 g / 0.0 N	0.03 kg / 0.06 lbs ~0 Gs
90 mm	0.02 kg / 0.04 lbs 121 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
100 mm	0.01 kg / 0.02 lbs 93 Gs	0.00 kg / 0.00 lbs 2 g / 0.0 N	0.01 kg / 0.02 lbs ~0 Gs

Two magnets interact from a wider radius than a magnet and steel combination. The connection of two magnets generates a stronger field and a larger range of performance. Want to build a solid fastener? Apply two magnets instead of a neodymium and a striker plate. Be careful that when attracting two neodymiums, the collision energy is extreme. The repulsion force is marginally weaker than the connection force, but still impressive.
*The magnetic induction in repulsion mode drops to ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Attention: Calculations refer to shear force of a pair of matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - warnings
MPL 40x20x5 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	11.5 cm
Hearing aid	10 Gs (1.0 mT)	9.0 cm
Timepiece	20 Gs (2.0 mT)	7.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.5 cm
Remote	50 Gs (5.0 mT)	5.0 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation poses a serious hazard to electronics as well as pacemakers. These NdFeB products produce a field that prevents correct functioning of digital equipment. Be aware: the invisible magnetic field acts through matter and glass. Special caution must be exercised by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - collision effects
MPL 40x20x5 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.13 km/h (5.87 m/s)	0.52 J
30 mm	33.06 km/h (9.18 m/s)	1.27 J
50 mm	42.54 km/h (11.82 m/s)	2.09 J
100 mm	60.15 km/h (16.71 m/s)	4.19 J

Magnetic elements are delicate – a collision with steel can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to skin. Hold the magnet firmly during installation so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Surface protection spec
MPL 40x20x5 / 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: Construction data (Flux)
MPL 40x20x5 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	18 042 Mx	180.4 µWb
P_c Coefficient	0.23	Low (Flat)

Flux value passing through the magnet pole. Key data when building generators and motors. P_c value determines the magnet's operating point.

Table 11: Submerged application
MPL 40x20x5 / N38

Environment	Effective steel pull	Effect
Air (land)	10.67 kg	Standard
Water (riverbed)	12.22 kg (+1.55 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!

Water displaces steel, making heavy objects slightly lighter. However, remember the water resistance when pulling the rope quickly.

1. Shear force

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

2. Steel thickness impact

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.23

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 P_c (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 P_c 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: 020160-2026

Measurement Calculator

Magnet pull force

Kilograms (kg)

Force (N)

Pounds (lbs)

Field Strength

Gauss (Gs)

Induction (T)

Put a figure in just one field to see the conversion for all other units right away.

Other deals

Product available Ships tomorrow

XT-5 magnetyzery do silników - DIESEL + powietrze - XT-5 magnetizer

94.99 ZŁ brutto / pcs

Product available Ships tomorrow

MP 15x7/3.5x3 / N38 - ring magnet

1.747 ZŁ brutto / pcs

Product available Ships tomorrow

SMZR 25x225 / N52 - magnetic separator with handle

615.00 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x125 [2xM8] / N52 - magnetic separator

393.60 ZŁ brutto / pcs

This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 40x20x5 mm and a weight of 30 g, guarantees the highest quality connection. As a block magnet with high power (approx. 10.67 kg), this product is available immediately from our warehouse in Poland. Furthermore, 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 10.67 kg can pinch very hard and cause hematomas. 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 generators and material handling systems. Thanks to the flat surface and high force (approx. 10.67 kg), they are ideal as hidden locks in furniture making and mounting elements in automation. 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. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 40x20x5 / N38 model is magnetized through the thickness (dimension 5 mm), which means that the N and S poles are located on its largest, flat surfaces. In practice, this means that this magnet has the greatest attraction force on its main planes (40x20 mm), which is ideal for flat mounting. 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: 40 mm (length), 20 mm (width), and 5 mm (thickness). The key parameter here is the lifting capacity amounting to approximately 10.67 kg (force ~104.63 N), which, with such a flat shape, proves the high power of the material. The product meets the standards for N38 grade magnets.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:

Their power is durable, and after around 10 years it decreases only by ~1% (theoretically),
Neodymium magnets are remarkably resistant to demagnetization caused by external magnetic fields,
A magnet with a smooth nickel surface has an effective appearance,
Neodymium magnets create maximum magnetic induction on a their surface, which ensures high operational effectiveness,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of detailed creating as well as adapting to complex requirements,
Fundamental importance in modern technologies – they find application in hard drives, motor assemblies, diagnostic systems, also complex engineering applications.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

Drawbacks and weaknesses of neodymium magnets: tips and applications.

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also raises their durability
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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 very resistant to heat
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in producing threads and complex forms in magnets, we propose using casing - magnetic holder.
Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these devices can complicate diagnosis medical when they are in the body.
With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Magnet power is the result of a measurement for ideal contact conditions, including:

with the contact of a sheet made of special test steel, ensuring maximum field concentration
possessing a massiveness of minimum 10 mm to avoid saturation
with a plane perfectly flat
without any air gap between the magnet and steel
under axial force direction (90-degree angle)
in temp. approx. 20°C

Determinants of practical lifting force of a magnet

Holding efficiency is affected by working environment parameters, including (from priority):

Clearance – existence of any layer (rust, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Angle of force application – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
Steel thickness – insufficiently thick steel does not close the flux, causing part of the flux to be wasted to the other side.
Steel type – mild steel attracts best. Alloy steels decrease magnetic properties and lifting capacity.
Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.

Warnings

Danger to the youngest

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

Skin irritation risks

Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, refrain from direct skin contact or opt for coated magnets.

Danger to pacemakers

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

Permanent damage

Control the heat. Heating the magnet to high heat will destroy its properties and pulling force.

Magnetic interference

A powerful magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Do not bring magnets near a device to avoid breaking the sensors.

Machining danger

Dust generated during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.

Fragile material

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Data carriers

Equipment safety: Strong magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Crushing force

Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.

Handling rules

Handle with care. Neodymium magnets attract from a distance and connect with huge force, often faster than you can move away.

Attention! Need more info? Read our article: Why are neodymium magnets dangerous?

MPL 40x20x5 / N38 - lamellar magnet

Technical parameters of the product - MPL 40x20x5 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - technical parameters

Table 1: Static pull force (force vs gap) - power drop MPL 40x20x5 / N38

Table 2: Vertical force (vertical surface) MPL 40x20x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces MPL 40x20x5 / N38

Table 4: Steel thickness (saturation) - power losses MPL 40x20x5 / N38

Table 5: Thermal stability (stability) - power drop MPL 40x20x5 / N38

Table 6: Two magnets (attraction) - field range MPL 40x20x5 / N38

Table 7: Hazards (electronics) - warnings MPL 40x20x5 / N38

Table 8: Impact energy (kinetic energy) - collision effects MPL 40x20x5 / N38

Table 9: Surface protection spec MPL 40x20x5 / N38

Table 10: Construction data (Flux) MPL 40x20x5 / N38

Table 11: Submerged application MPL 40x20x5 / N38

1. Shear force

2. Steel thickness impact

3. Power loss vs temp

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

Material specification

Sustainability

Magnet pull force

Field Strength

Other deals

XT-5 magnetyzery do silników - DIESEL + powietrze - XT-5 magnetizer

MP 15x7/3.5x3 / N38 - ring magnet

SMZR 25x225 / N52 - magnetic separator with handle

SM 25x125 [2xM8] / N52 - magnetic separator

Strengths as well as weaknesses of Nd2Fe14B magnets.

Benefits

Cons

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Determinants of practical lifting force of a magnet

Warnings

Danger to the youngest

Skin irritation risks

Danger to pacemakers

Permanent damage

Magnetic interference

Machining danger

Fragile material

Data carriers

Crushing force

Handling rules

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - power drop
MPL 40x20x5 / N38

Table 2: Vertical force (vertical surface)
MPL 40x20x5 / N38

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MPL 40x20x5 / N38

Table 4: Steel thickness (saturation) - power losses
MPL 40x20x5 / N38

Table 5: Thermal stability (stability) - power drop
MPL 40x20x5 / N38

Table 6: Two magnets (attraction) - field range
MPL 40x20x5 / N38

Table 7: Hazards (electronics) - warnings
MPL 40x20x5 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MPL 40x20x5 / N38

Table 9: Surface protection spec
MPL 40x20x5 / N38

Table 10: Construction data (Flux)
MPL 40x20x5 / N38

Table 11: Submerged application
MPL 40x20x5 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.