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MPL 20x8x4 / 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 020133

GTIN/EAN: 5906301811398

5.00

length

20 mm [±0,1 mm]

Width

8 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

4.8 g

Magnetization Direction

↑ axial

Load capacity

4.79 kg / 46.98 N

Magnetic Induction

336.99 mT / 3370 Gs

Coating

[NiCuNi] Nickel

see technical data »

3.67 ZŁ with VAT / pcs + price for transport

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Technical data - MPL 20x8x4 / N38 - lamellar magnet

Specification / characteristics - MPL 20x8x4 / N38 - lamellar magnet

properties

properties	values
Cat. no.	020133
GTIN/EAN	5906301811398
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	20 mm [±0,1 mm]
Width	8 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	4.8 g
Magnetization Direction	↑ axial
Load capacity ~ ?	4.79 kg / 46.98 N
Magnetic Induction ~ ?	336.99 mT / 3370 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MPL 20x8x4 / 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

Engineering simulation of the magnet - data

Presented values constitute the outcome of a physical analysis. Results rely on models for the material Nd₂Fe₁₄B. Operational parameters might slightly differ. Please consider these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs distance) - interaction chart
MPL 20x8x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3368 Gs 336.8 mT	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N	medium risk
1 mm	2818 Gs 281.8 mT	3.35 kg / 7.39 lbs 3352.3 g / 32.9 N	medium risk
2 mm	2266 Gs 226.6 mT	2.17 kg / 4.78 lbs 2167.6 g / 21.3 N	medium risk
3 mm	1794 Gs 179.4 mT	1.36 kg / 3.00 lbs 1358.6 g / 13.3 N	safe
5 mm	1130 Gs 113.0 mT	0.54 kg / 1.19 lbs 538.9 g / 5.3 N	safe
10 mm	416 Gs 41.6 mT	0.07 kg / 0.16 lbs 73.0 g / 0.7 N	safe
15 mm	187 Gs 18.7 mT	0.01 kg / 0.03 lbs 14.7 g / 0.1 N	safe
20 mm	97 Gs 9.7 mT	0.00 kg / 0.01 lbs 4.0 g / 0.0 N	safe
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 lbs 0.5 g / 0.0 N	safe
50 mm	9 Gs 0.9 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Grip strength decreases drastically per each millimeter of spacing. Keep in mind that even a microscopic distance (e.g., contamination, varnish, veneer) significantly diminishes the holding power. Magnets work most effectively in perfect adhesion; distance weakens the force. Notice how rapidly the load capacity fall, when the product does not touch tightly to the metal substrate. When planning the assembly, discard additional spacers.

Table 2: Shear capacity (vertical surface)
MPL 20x8x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.96 kg / 2.11 lbs 958.0 g / 9.4 N
1 mm	Stal (~0.2)	0.67 kg / 1.48 lbs 670.0 g / 6.6 N
2 mm	Stal (~0.2)	0.43 kg / 0.96 lbs 434.0 g / 4.3 N
3 mm	Stal (~0.2)	0.27 kg / 0.60 lbs 272.0 g / 2.7 N
5 mm	Stal (~0.2)	0.11 kg / 0.24 lbs 108.0 g / 1.1 N
10 mm	Stal (~0.2)	0.01 kg / 0.03 lbs 14.0 g / 0.1 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

This section presents the theoretical force sufficient to start the sliding of the magnet vertically on a upright steel plate (considering standard friction coefficient). The holding force is a function of the separation distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MPL 20x8x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	1.44 kg / 3.17 lbs 1437.0 g / 14.1 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.96 kg / 2.11 lbs 958.0 g / 9.4 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.48 kg / 1.06 lbs 479.0 g / 4.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	2.40 kg / 5.28 lbs 2395.0 g / 23.5 N

When placing a holder on a upright plane (e.g., a car body), it will maintain only about 1/5 of its maximum pull force. Gravitational force as well as a low friction coefficient mean that magnets move down faster than they pull off. Want to create a vertical fastening? Consider that the sliding force is much weaker than the maximum static pull force. On a painted metal, the element will give way down under a significantly smaller weight. Using a rubber pad can drastically raise the stability.

Table 4: Material efficiency (saturation) - power losses
MPL 20x8x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.48 kg / 1.06 lbs 479.0 g / 4.7 N
1 mm	25%	1.20 kg / 2.64 lbs 1197.5 g / 11.7 N
2 mm	50%	2.40 kg / 5.28 lbs 2395.0 g / 23.5 N
3 mm	75%	3.59 kg / 7.92 lbs 3592.5 g / 35.2 N
5 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N
10 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N
11 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N
12 mm	100%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N

A thin metal plate is not enough to conduct the entire magnetic field, which squanders power of the holder. If you mount a strong magnet to a thin surface, the magnetism will pass right through and the holding will be smaller. To achieve full efficiency of this neodymium's power, you need a suitably thick backing of steel. The saturation phenomenon means that on sheet metal structures (e.g., car bodies), the magnet shows lower pull force. We suggest choosing the steel thickness from these parameters.

Table 5: Working in heat (material behavior) - thermal limit
MPL 20x8x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	4.79 kg / 10.56 lbs 4790.0 g / 47.0 N	OK
40 °C	-2.2%	4.68 kg / 10.33 lbs 4684.6 g / 46.0 N	OK
60 °C	-4.4%	4.58 kg / 10.10 lbs 4579.2 g / 44.9 N
80 °C	-6.6%	4.47 kg / 9.86 lbs 4473.9 g / 43.9 N
100 °C	-28.8%	3.41 kg / 7.52 lbs 3410.5 g / 33.5 N

Ordinary NdFeB products lose parameters above the temperature limit. Protect against heat – heat can permanently damage this magnet. With increasing heat, the neodymium's power temporarily decreases. Avoid using this product close to heaters higher than its operating temperature limit. Ignoring the limit will lead to destruction of magnetism.

*Engineering note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (pancake types) are more susceptible to demagnetization sooner compared to rod magnets. Warning indicator in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MPL 20x8x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.19 kg / 24.67 lbs 4 784 Gs	1.68 kg / 3.70 lbs 1678 g / 16.5 N	N/A
1 mm	9.49 kg / 20.93 lbs 6 205 Gs	1.42 kg / 3.14 lbs 1424 g / 14.0 N	8.54 kg / 18.84 lbs ~0 Gs
2 mm	7.83 kg / 17.26 lbs 5 635 Gs	1.17 kg / 2.59 lbs 1175 g / 11.5 N	7.05 kg / 15.54 lbs ~0 Gs
3 mm	6.34 kg / 13.97 lbs 5 069 Gs	0.95 kg / 2.10 lbs 951 g / 9.3 N	5.70 kg / 12.57 lbs ~0 Gs
5 mm	4.02 kg / 8.85 lbs 4 035 Gs	0.60 kg / 1.33 lbs 602 g / 5.9 N	3.61 kg / 7.97 lbs ~0 Gs
10 mm	1.26 kg / 2.78 lbs 2 259 Gs	0.19 kg / 0.42 lbs 189 g / 1.9 N	1.13 kg / 2.50 lbs ~0 Gs
20 mm	0.17 kg / 0.38 lbs 832 Gs	0.03 kg / 0.06 lbs 26 g / 0.3 N	0.15 kg / 0.34 lbs ~0 Gs
50 mm	0.00 kg / 0.01 lbs 112 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 70 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.00 lbs 46 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.00 lbs 32 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 23 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 17 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnets attract each other from a significantly greater distance than a magnet and sheet combination. The setup of magnet-to-magnet creates a more powerful interaction and a wider radius of action. Designing a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Be careful that when attracting two neodymiums, the pinch force is extreme. The levitation is marginally weaker than the attraction, but still large.
*The magnetic induction in repulsion mode reaches ~0 Gs in the exact middle of the gap (resulting from vector opposition).
* Calculations demonstrate friction force of a pair of identical neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Protective zones (implants) - precautionary measures
MPL 20x8x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Mechanical watch	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Remote	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

A strong magnetic field poses a large risk to electronic devices as well as medical implants. These neodymiums generate a flux that disrupts operation of sensitive medical devices. Notice: the invisible magnetic field passes through tissues and plastic. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, remotes, speakers, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MPL 20x8x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	32.16 km/h (8.93 m/s)	0.19 J
30 mm	55.18 km/h (15.33 m/s)	0.56 J
50 mm	71.24 km/h (19.79 m/s)	0.94 J
100 mm	100.75 km/h (27.99 m/s)	1.88 J

Neodymium magnets are delicate – a strong collision with metal causes immediate chipping. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can cause material chips or dangerous crushing to fingers. Always hold the magnet during mounting so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the neodymium. Use safety goggles when playing with large magnets.

Table 9: Corrosion resistance
MPL 20x8x4 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

Neodymium magnets are highly susceptible to corrosion without proper protection. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (P_c)
MPL 20x8x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 277 Mx	52.8 µWb
P_c Coefficient	0.38	Low (Flat)

Flux value passing through the magnet pole. Key data in coil applications and motors. The P_c coefficient determines the working geometry.

Table 11: Hydrostatics and buoyancy
MPL 20x8x4 / N38

Environment	Effective steel pull	Effect
Air (land)	4.79 kg	Standard
Water (riverbed)	5.48 kg (+0.69 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. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

*Caution: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.

2. Efficiency vs thickness

*Thin steel (e.g. computer case) drastically weakens the holding force.

3. Heat tolerance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.38

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.

Engineering data and GPSR

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%

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: 020133-2026

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SM 32x100 [2xM8] / N42 - magnetic separator

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This product is a very powerful magnet in the shape of a plate made of NdFeB material, which, with dimensions of 20x8x4 mm and a weight of 4.8 g, guarantees premium class connection. This rectangular block with a force of 46.98 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 4.79 kg can pinch very hard and cause hematomas. Using a screwdriver risks destroying the coating and permanently cracking the magnet.

They constitute a key element in the production of wind generators and material handling systems. They work great as fasteners under tiles, wood, or glass. Their rectangular shape facilitates precise gluing into milled sockets in wood or plastic.

For mounting flat magnets MPL 20x8x4 / N38, we recommend utilizing two-component adhesives (e.g., UHU Endfest, Distal), which ensure a durable bond with metal or plastic. 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 20x8x4 / N38 model is magnetized through the thickness (dimension 4 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 (20x8 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: 20 mm (length), 8 mm (width), and 4 mm (thickness). The key parameter here is the holding force amounting to approximately 4.79 kg (force ~46.98 N), which, with such a compact shape, proves the high grade of the material. The product meets the standards for N38 grade magnets.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Benefits

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

They have unchanged lifting capacity, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
They maintain their magnetic properties even under strong external field,
Thanks to the shiny finish, the layer of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
Magnets exhibit maximum magnetic induction on the outer layer,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
Considering the option of flexible molding and adaptation to specialized solutions, magnetic components can be modeled in a wide range of geometric configurations, which increases their versatility,
Significant place in future technologies – they are used in magnetic memories, electromotive mechanisms, diagnostic systems, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in producing nuts and complicated shapes in magnets, we recommend using cover - magnetic mount.
Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that small components of these devices can disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Magnet power was defined for ideal contact conditions, including:

with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
with a cross-section minimum 10 mm
characterized by even structure
under conditions of ideal adhesion (surface-to-surface)
for force applied at a right angle (pull-off, not shear)
in stable room temperature

What influences lifting capacity in practice

In practice, the actual lifting capacity depends on several key aspects, presented from most significant:

Gap between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 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 plate is standardly several times lower (approx. 1/5 of the lifting capacity).
Plate thickness – insufficiently thick steel does not accept the full field, causing part of the flux to be escaped to the other side.
Steel type – mild steel attracts best. Alloy admixtures lower magnetic properties and holding force.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate reduces the holding force.

Warnings

Dust explosion hazard

Powder created during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Shattering risk

Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

No play value

These products are not intended for children. Accidental ingestion of several magnets can lead to them attracting across intestines, which poses a direct threat to life and requires urgent medical intervention.

Nickel coating and allergies

It is widely known that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and select coated magnets.

Serious injuries

Mind your fingers. Two large magnets will join instantly with a force of massive weight, destroying anything in their path. Be careful!

Pacemakers

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Cards and drives

Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Respect the power

Use magnets consciously. Their powerful strength can surprise even professionals. Stay alert and do not underestimate their force.

Heat warning

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

GPS Danger

Note: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, tablet, and navigation systems.

Security! More info about risks in the article: Magnet Safety Guide.

MPL 20x8x4 / N38 - lamellar magnet

Technical data - MPL 20x8x4 / N38 - lamellar magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering simulation of the magnet - data

Table 1: Static pull force (force vs distance) - interaction chart MPL 20x8x4 / N38

Table 2: Shear capacity (vertical surface) MPL 20x8x4 / N38

Table 3: Vertical assembly (shearing) - vertical pull MPL 20x8x4 / N38

Table 4: Material efficiency (saturation) - power losses MPL 20x8x4 / N38

Table 5: Working in heat (material behavior) - thermal limit MPL 20x8x4 / N38

Table 6: Two magnets (attraction) - forces in the system MPL 20x8x4 / N38

Table 7: Protective zones (implants) - precautionary measures MPL 20x8x4 / N38

Table 8: Dynamics (cracking risk) - collision effects MPL 20x8x4 / N38

Table 9: Corrosion resistance MPL 20x8x4 / N38

Table 10: Electrical data (Pc) MPL 20x8x4 / N38

Table 11: Hydrostatics and buoyancy MPL 20x8x4 / N38

1. Vertical hold

2. Efficiency vs thickness

3. Heat tolerance

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

Material specification

Ecology and recycling (GPSR)

Force (pull)

Field Strength

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Pros as well as cons of Nd2Fe14B magnets.

Benefits

Weaknesses

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

What influences lifting capacity in practice

Warnings

Dust explosion hazard

Shattering risk

No play value

Nickel coating and allergies

Serious injuries

Pacemakers

Cards and drives

Respect the power

Heat warning

GPS Danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - interaction chart
MPL 20x8x4 / N38

Table 2: Shear capacity (vertical surface)
MPL 20x8x4 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MPL 20x8x4 / N38

Table 4: Material efficiency (saturation) - power losses
MPL 20x8x4 / N38

Table 5: Working in heat (material behavior) - thermal limit
MPL 20x8x4 / N38

Table 6: Two magnets (attraction) - forces in the system
MPL 20x8x4 / N38

Table 7: Protective zones (implants) - precautionary measures
MPL 20x8x4 / N38

Table 8: Dynamics (cracking risk) - collision effects
MPL 20x8x4 / N38

Table 9: Corrosion resistance
MPL 20x8x4 / N38

Table 10: Electrical data (P_c)
MPL 20x8x4 / N38

Table 11: Hydrostatics and buoyancy
MPL 20x8x4 / N38

Pros as well as cons of Nd₂Fe₁₄B magnets.