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 parameters »

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

Do you have a hard time selecting?

Give us a call +48 888 99 98 98 or get in touch by means of contact form through our site.
Parameters and appearance of a neodymium magnet can be tested on our our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

Technical 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 assembly - technical parameters

The following information are the direct effect of a engineering simulation. Values were calculated on models for the class Nd₂Fe₁₄B. Operational conditions might slightly deviate from the simulation results. Treat these calculations as a reference point when designing systems.

Table 1: Static pull force (pull vs distance) - characteristics
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 pounds 10670.0 g / 104.7 N	crushing
1 mm	1956 Gs 195.6 mT	9.69 kg / 21.37 pounds 9693.2 g / 95.1 N	medium risk
2 mm	1839 Gs 183.9 mT	8.57 kg / 18.89 pounds 8570.5 g / 84.1 N	medium risk
3 mm	1711 Gs 171.1 mT	7.41 kg / 16.34 pounds 7413.1 g / 72.7 N	medium risk
5 mm	1444 Gs 144.4 mT	5.28 kg / 11.65 pounds 5282.9 g / 51.8 N	medium risk
10 mm	888 Gs 88.8 mT	2.00 kg / 4.40 pounds 1996.5 g / 19.6 N	safe
15 mm	545 Gs 54.5 mT	0.75 kg / 1.66 pounds 752.0 g / 7.4 N	safe
20 mm	346 Gs 34.6 mT	0.30 kg / 0.67 pounds 302.9 g / 3.0 N	safe
30 mm	156 Gs 15.6 mT	0.06 kg / 0.14 pounds 61.9 g / 0.6 N	safe
50 mm	46 Gs 4.6 mT	0.01 kg / 0.01 pounds 5.4 g / 0.1 N	safe

Pulling power decreases drastically with every subsequent millimeter of gap. Remember that even a very thin break (e.g., dirt, paint, dust) noticeably diminishes the holding power. Magnets work optimally in perfect adhesion; gap weakens the power. Observe how flashily the parameters drop, when the magnet does not adhere directly to the metal substrate. When calculating the assembly, discard redundant distances.

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

The following data defines the approximate force required to cause the sliding of the magnet vertically on a upright steel wall (considering standard friction coefficient). This parameter varies with the gap size between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
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 pounds 3201.0 g / 31.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	2.13 kg / 4.70 pounds 2134.0 g / 20.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	1.07 kg / 2.35 pounds 1067.0 g / 10.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	5.34 kg / 11.76 pounds 5335.0 g / 52.3 N

When mounting a holder on a vertical wall (e.g., a board), it you can count on just about 20%-30% of its maximum pull force. Gravity and a weak degree of grip influence the fact that products slide down easier than they pull off. Want to create a hanger? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the element will give way down under a significantly smaller cargo. Application of an anti-slip pad can effectively improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x20x5 / N38

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

A thin metal plate is incapable of absorb the full magnetic flux, which wastes potential of the magnet. Should you mount a strong magnet to a thin surface, the flux will penetrate right through and the holding will be smaller. To utilize the maximum of this magnet's potential, you require a sufficiently solid piece of steel. The saturation effect means that on thin elements (e.g., appliance housings), the holder shows lower pull force. We suggest choosing the steel dimension according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MPL 40x20x5 / N38

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

Ordinary NdFeB products irreversibly lose strength past the thermal threshold. Watch out for overheating – high temperature can irreversibly demagnetize this magnet. As the temperature rises, the magnet's capacity temporarily lowers. Refrain from using this magnet near heat sources exceeding its safe range. Ignoring the limit will cause irreversible degradation of magnetism.

*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress compared to rod magnets. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
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 pounds 3 495 Gs	3.12 kg / 6.87 pounds 3116 g / 30.6 N	N/A
1 mm	19.88 kg / 43.83 pounds 4 015 Gs	2.98 kg / 6.57 pounds 2982 g / 29.3 N	17.89 kg / 39.44 pounds ~0 Gs
2 mm	18.87 kg / 41.61 pounds 3 912 Gs	2.83 kg / 6.24 pounds 2831 g / 27.8 N	16.99 kg / 37.45 pounds ~0 Gs
3 mm	17.80 kg / 39.24 pounds 3 800 Gs	2.67 kg / 5.89 pounds 2670 g / 26.2 N	16.02 kg / 35.32 pounds ~0 Gs
5 mm	15.56 kg / 34.30 pounds 3 552 Gs	2.33 kg / 5.14 pounds 2334 g / 22.9 N	14.00 kg / 30.87 pounds ~0 Gs
10 mm	10.29 kg / 22.68 pounds 2 888 Gs	1.54 kg / 3.40 pounds 1543 g / 15.1 N	9.26 kg / 20.41 pounds ~0 Gs
20 mm	3.89 kg / 8.57 pounds 1 776 Gs	0.58 kg / 1.29 pounds 583 g / 5.7 N	3.50 kg / 7.71 pounds ~0 Gs
50 mm	0.26 kg / 0.57 pounds 456 Gs	0.04 kg / 0.08 pounds 39 g / 0.4 N	0.23 kg / 0.51 pounds ~0 Gs
60 mm	0.12 kg / 0.27 pounds 313 Gs	0.02 kg / 0.04 pounds 18 g / 0.2 N	0.11 kg / 0.24 pounds ~0 Gs
70 mm	0.06 kg / 0.13 pounds 221 Gs	0.01 kg / 0.02 pounds 9 g / 0.1 N	0.05 kg / 0.12 pounds ~0 Gs
80 mm	0.03 kg / 0.07 pounds 162 Gs	0.00 kg / 0.01 pounds 5 g / 0.0 N	0.03 kg / 0.06 pounds ~0 Gs
90 mm	0.02 kg / 0.04 pounds 121 Gs	0.00 kg / 0.01 pounds 3 g / 0.0 N	0.02 kg / 0.04 pounds ~0 Gs
100 mm	0.01 kg / 0.02 pounds 93 Gs	0.00 kg / 0.00 pounds 2 g / 0.0 N	0.01 kg / 0.02 pounds ~0 Gs

Two magnetic products attract each other from a wider radius than a magnet and sheet setup. Such a system of magnet-to-magnet produces a massive flux and a further horizon of action. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the impact force is huge. The levitation is marginally weaker than the attraction, but still impressive.
*The magnetic induction for N-N configuration drops to ~0 Gs at the geometric center between the magnets (due to field cancellation).
Attention: Calculations apply to shear force of dual matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (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
Mechanical watch	20 Gs (2.0 mT)	7.0 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)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Extremely neodym field is a serious hazard to IT equipment and pacemakers. These neodymiums generate a flux that destroys function of sensitive medical devices. Be aware: the invisible magnetic field passes through tissues and glass. Exceptional care must be taken by people with hearing aids and insulin pumps. Influence will be felt by: automatic timepieces, car keys, speakers, and screens. Do not place the magnet near cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - warning
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

Neodymium magnets are delicate – a violent impact against metal causes immediate chipping. Watch the impact speed – a neodymium left loose speeds with massive force. Kinetic force can cause material chips or painful pinches to skin. Be sure to control the product during bringing near metal so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Use safety goggles when working with powerful specimens.

Table 9: Corrosion resistance
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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical 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)

Total magnetic flux passing through the magnet pole. Essential parameter in coil applications and motors. The P_c coefficient defines the magnet's operating point.

Table 11: Physics of underwater searching
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%

Warning: 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. Buoyancy helps in lifting finds.

1. Shear force

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

2. Plate thickness effect

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

3. Thermal stability

*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

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The 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%

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: 020160-2026

Measurement Calculator

Magnet pull force

Pounds (lbs)

Field Strength

Put your value in a single field to see the conversion for all other fields at once.

Other proposals

Product available Ships tomorrow

MW 100x30 / N38 - cylindrical magnet

650.01 ZŁ brutto / pcs

Product available Ships tomorrow

SM 32x325 [2xM8] / N52 - magnetic separator

1045.50 ZŁ brutto / pcs

Product available Ships tomorrow

MP 5x1.5x3 / N38 - ring magnet

0.344 ZŁ brutto / pcs

Product available Ships tomorrow

MW 15x4 / N38 - cylindrical magnet

1.968 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 premium class connection. This rectangular block with a force of 104.63 N is ready for shipment in 24h, allowing for rapid realization of your project. The durable anti-corrosion layer ensures a long lifespan in a dry environment, protecting the core from oxidation.

Separating block magnets requires a technique based on sliding (moving one relative to the other), rather than forceful pulling apart. Watch your fingers! Magnets with a force of 10.67 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 generators and material handling systems. They work great as fasteners under tiles, wood, or glass. 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. For lighter applications or mounting on smooth surfaces, branded foam tape (e.g., 3M VHB) will work, provided the surface is perfectly degreased. Avoid chemically aggressive glues or hot glue, which can demagnetize neodymium (above 80°C).

Standardly, the MPL 40x20x5 / N38 model is magnetized axially (dimension 5 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 40x20x5 mm, which, at a weight of 30 g, makes it an element with impressive energy density. The key parameter here is the lifting capacity amounting to approximately 10.67 kg (force ~104.63 N), which, with such a compact shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Advantages and disadvantages of rare earth magnets.

Pros

Besides their stability, neodymium magnets are valued for these benefits:

They do not lose magnetism, even over approximately ten years – the decrease in strength is only ~1% (based on measurements),
They are resistant to demagnetization induced by external magnetic fields,
By using a lustrous coating of nickel, the element acquires an modern look,
Magnetic induction on the working part of the magnet is very high,
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...
Possibility of exact shaping and modifying to individual conditions,
Significant place in electronics industry – they are utilized in data components, motor assemblies, precision medical tools, as well as modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in compact constructions

Weaknesses

Disadvantages of neodymium magnets:

Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises 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.
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Limited possibility of producing threads in the magnet and complicated shapes - preferred is a housing - magnet mounting.
Potential hazard resulting from small fragments of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to be problematic in diagnostics medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Highest magnetic holding force – what affects it?

The declared magnet strength refers to the maximum value, measured under laboratory conditions, meaning:

using a base made of high-permeability steel, functioning as a circuit closing element
possessing a thickness of minimum 10 mm to avoid saturation
with an ground contact surface
without any air gap between the magnet and steel
under axial force vector (90-degree angle)
in stable room temperature

Determinants of practical lifting force of a magnet

Real force is affected by working environment parameters, such as (from most important):

Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
Surface finish – full contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
Temperature – temperature increase causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.

Warnings

Threat to navigation

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Fire risk

Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.

Bone fractures

Pinching hazard: The attraction force is so immense that it can result in blood blisters, crushing, and even bone fractures. Protective gloves are recommended.

Allergy Warning

It is widely known that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands or select versions in plastic housing.

Material brittleness

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

Choking Hazard

Product intended for adults. Small elements can be swallowed, causing intestinal necrosis. Store away from children and animals.

Permanent damage

Keep cool. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Handling guide

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Data carriers

Do not bring magnets close to a purse, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Health Danger

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Warning! Learn more about risks in the article: Safety of working with magnets.

MPL 40x20x5 / N38 - lamellar magnet

Technical 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 assembly - technical parameters

Table 1: Static pull force (pull vs distance) - characteristics MPL 40x20x5 / N38

Table 2: Slippage hold (vertical surface) MPL 40x20x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull MPL 40x20x5 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MPL 40x20x5 / N38

Table 5: Working in heat (stability) - resistance threshold MPL 40x20x5 / N38

Table 6: Two magnets (repulsion) - field collision MPL 40x20x5 / N38

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

Table 8: Dynamics (cracking risk) - warning MPL 40x20x5 / N38

Table 9: Corrosion resistance MPL 40x20x5 / N38

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

Table 11: Physics of underwater searching MPL 40x20x5 / N38

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Material specification

Environmental data

Magnet pull force

Field Strength

Other proposals

MW 100x30 / N38 - cylindrical magnet

SM 32x325 [2xM8] / N52 - magnetic separator

MP 5x1.5x3 / N38 - ring magnet

MW 15x4 / N38 - cylindrical magnet

Advantages and disadvantages of rare earth magnets.

Pros

Weaknesses

Lifting parameters

Highest magnetic holding force – what affects it?

Determinants of practical lifting force of a magnet

Warnings

Threat to navigation

Fire risk

Bone fractures

Allergy Warning

Material brittleness

Choking Hazard

Permanent damage

Handling guide

Data carriers

Health Danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MPL 40x20x5 / N38

Table 2: Slippage hold (vertical surface)
MPL 40x20x5 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MPL 40x20x5 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MPL 40x20x5 / N38

Table 5: Working in heat (stability) - resistance threshold
MPL 40x20x5 / N38

Table 6: Two magnets (repulsion) - field collision
MPL 40x20x5 / N38

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

Table 8: Dynamics (cracking risk) - warning
MPL 40x20x5 / N38

Table 9: Corrosion resistance
MPL 40x20x5 / N38

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

Table 11: Physics of underwater searching
MPL 40x20x5 / N38