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MW 8x20 / N38 - cylindrical 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

cylindrical magnet

Catalog no 010475

GTIN/EAN: 5906301811138

5.00

Diameter Ø

8 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

7.54 g

Magnetization Direction

→ diametrical

Load capacity

1.30 kg / 12.71 N

Magnetic Induction

607.01 mT / 6070 Gs

Coating

[NiCuNi] Nickel

see technical data »

4.60 ZŁ with VAT / pcs + price for transport

3.74 ZŁ net + 23% VAT / pcs

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Product card - MW 8x20 / N38 - cylindrical magnet

Specification / characteristics - MW 8x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010475
GTIN/EAN	5906301811138
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	8 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	7.54 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	1.30 kg / 12.71 N
Magnetic Induction ~ ?	607.01 mT / 6070 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 8x20 / N38 - cylindrical 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 analysis of the assembly - technical parameters

Presented information constitute the direct effect of a mathematical calculation. Values were calculated on models for the class Nd₂Fe₁₄B. Operational conditions may deviate from the simulation results. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static force (pull vs gap) - characteristics
MW 8x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6064 Gs 606.4 mT	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N	weak grip
1 mm	4587 Gs 458.7 mT	0.74 kg / 1.64 pounds 743.7 g / 7.3 N	weak grip
2 mm	3327 Gs 332.7 mT	0.39 kg / 0.86 pounds 391.4 g / 3.8 N	weak grip
3 mm	2388 Gs 238.8 mT	0.20 kg / 0.44 pounds 201.6 g / 2.0 N	weak grip
5 mm	1281 Gs 128.1 mT	0.06 kg / 0.13 pounds 58.0 g / 0.6 N	weak grip
10 mm	389 Gs 38.9 mT	0.01 kg / 0.01 pounds 5.4 g / 0.1 N	weak grip
15 mm	169 Gs 16.9 mT	0.00 kg / 0.00 pounds 1.0 g / 0.0 N	weak grip
20 mm	90 Gs 9.0 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	weak grip
30 mm	35 Gs 3.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip
50 mm	10 Gs 1.0 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	weak grip

Grip strength weakens drastically with every mm of distance. Note that every additional insulation layer (e.g., contamination, varnish, veneer) significantly weakens the grip. Magnetic products operate strongest during direct contact; gap drastically cuts the power. Notice how quickly the load capacity fall, when the product does not adhere tightly to the steel surface. When planning the arrangement, eliminate unnecessary gaps.

Table 2: Slippage load (wall)
MW 8x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.26 kg / 0.57 pounds 260.0 g / 2.6 N
1 mm	Stal (~0.2)	0.15 kg / 0.33 pounds 148.0 g / 1.5 N
2 mm	Stal (~0.2)	0.08 kg / 0.17 pounds 78.0 g / 0.8 N
3 mm	Stal (~0.2)	0.04 kg / 0.09 pounds 40.0 g / 0.4 N
5 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 2.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

This section indicates the estimated holding capacity needed to initiate the shifting of the magnet down on a vertical steel plate (considering standard friction coefficient). This value is relative to the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 8x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.39 kg / 0.86 pounds 390.0 g / 3.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.26 kg / 0.57 pounds 260.0 g / 2.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.13 kg / 0.29 pounds 130.0 g / 1.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.65 kg / 1.43 pounds 650.0 g / 6.4 N

When mounting a element on a vertical plane (e.g., a car body), it you can count on just about 20%-30% of its maximum pull force. Gravity as well as a weak degree of grip mean that products slide down faster than they pop off the substrate. Planning a wall mount? Note that the sliding force is significantly lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a much lighter cargo. Using a rubber layer can effectively raise the stability.

Table 4: Steel thickness (saturation) - power losses
MW 8x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.13 kg / 0.29 pounds 130.0 g / 1.3 N
1 mm	25%	0.33 kg / 0.72 pounds 325.0 g / 3.2 N
2 mm	50%	0.65 kg / 1.43 pounds 650.0 g / 6.4 N
3 mm	75%	0.98 kg / 2.15 pounds 975.0 g / 9.6 N
5 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N
10 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N
11 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N
12 mm	100%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N

A thin sheet cannot conduct the entire magnetic field, which weakens actual performance of the holder. If you mount a strong magnet to a weak sheet, the magnetism will pass right through and the holding will be smaller. To squeeze the maximum of this neodymium's potential, you need a suitably thick piece of steel. The saturation phenomenon means that on thin elements (e.g., car bodies), the magnet works worse. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 8x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.30 kg / 2.87 pounds 1300.0 g / 12.8 N	OK
40 °C	-2.2%	1.27 kg / 2.80 pounds 1271.4 g / 12.5 N	OK
60 °C	-4.4%	1.24 kg / 2.74 pounds 1242.8 g / 12.2 N	OK
80 °C	-6.6%	1.21 kg / 2.68 pounds 1214.2 g / 11.9 N
100 °C	-28.8%	0.93 kg / 2.04 pounds 925.6 g / 9.1 N

Ordinary NdFeB products irreversibly lose strength above the temperature limit. Protect against heat – high temperature can irreversibly destroy this magnet. As the temperature rises, the neodymium's capacity temporarily lowers. Do not use this product near heat sources higher than its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Engineering note: Thermal stability is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (pancake types) are more susceptible to demagnetization at lower temperatures than taller cylinders. The danger warning in the table signals permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 8x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	11.40 kg / 25.12 pounds 6 154 Gs	1.71 kg / 3.77 pounds 1709 g / 16.8 N	N/A
1 mm	8.76 kg / 19.31 pounds 10 632 Gs	1.31 kg / 2.90 pounds 1314 g / 12.9 N	7.88 kg / 17.38 pounds ~0 Gs
2 mm	6.52 kg / 14.37 pounds 9 174 Gs	0.98 kg / 2.16 pounds 978 g / 9.6 N	5.87 kg / 12.94 pounds ~0 Gs
3 mm	4.76 kg / 10.49 pounds 7 837 Gs	0.71 kg / 1.57 pounds 714 g / 7.0 N	4.28 kg / 9.44 pounds ~0 Gs
5 mm	2.46 kg / 5.43 pounds 5 637 Gs	0.37 kg / 0.81 pounds 369 g / 3.6 N	2.22 kg / 4.88 pounds ~0 Gs
10 mm	0.51 kg / 1.12 pounds 2 561 Gs	0.08 kg / 0.17 pounds 76 g / 0.7 N	0.46 kg / 1.01 pounds ~0 Gs
20 mm	0.05 kg / 0.10 pounds 778 Gs	0.01 kg / 0.02 pounds 7 g / 0.1 N	0.04 kg / 0.09 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 107 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 69 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 48 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 34 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 25 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 19 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two strong neodymiums interact from a wider radius than a magnet and steel combination. Such a system of magnet-to-magnet creates a more powerful interaction and a further horizon of action. Planning to create a powerful holder? Use a pair of magnets instead of one magnet and a steel. Remember that when connecting a pair of magnets, the collision energy is huge. The repulsion force is marginally weaker than the attraction, but still large.
*The magnetic induction for N-N configuration reaches ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Important: Figures demonstrate sliding force of two identical magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Hazards (implants) - warnings
MW 8x20 / 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
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Extremely neodym field poses a large risk to electronic devices and medical implants. These neodymiums produce a flux that prevents correct functioning of digital equipment. Notice: the unseen radiation passes through tissues and glass. Exceptional care must be exercised by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 8x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	13.28 km/h (3.69 m/s)	0.05 J
30 mm	22.94 km/h (6.37 m/s)	0.15 J
50 mm	29.61 km/h (8.23 m/s)	0.26 J
100 mm	41.88 km/h (11.63 m/s)	0.51 J

NdFeB products are very brittle – a collision with steel can result in shattering. Watch the impact speed – a magnet released freely becomes dangerous. Striking energy 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 metal. 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: Anti-corrosion coating durability
MW 8x20 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MW 8x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	3 457 Mx	34.6 µWb
P_c Coefficient	1.31	High (Stable)

Flux value passing through the pole surface. Key data when building generators and motors. P_c value determines the working geometry.

Table 11: Submerged application
MW 8x20 / N38

Environment	Effective steel pull	Effect
Air (land)	1.30 kg	Standard
Water (riverbed)	1.49 kg (+0.19 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Vertical hold

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

2. Steel saturation

*Thin steel (e.g. computer case) severely reduces the holding force.

3. Power loss vs temp

*For standard magnets, 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) = 1.31

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 and environmental data

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: 010475-2026

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MP 20x8/4x5 / N38 - ring magnet

7.75 ZŁ brutto / pcs

This product is an incredibly powerful rod magnet, made from advanced NdFeB material, which, with dimensions of Ø8x20 mm, guarantees optimal power. This specific item features high dimensional repeatability and professional build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with significant force (approx. 1.30 kg), this product is in stock from our European logistics center, ensuring rapid order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the pull force of 12.71 N with a weight of only 7.54 g, this cylindrical magnet is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 8.1 mm) using two-component epoxy glues. To ensure long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø8x20), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

This model is characterized by dimensions Ø8x20 mm, which, at a weight of 7.54 g, makes it an element with impressive magnetic energy density. The value of 12.71 N means that the magnet is capable of holding a weight many times exceeding its own mass of 7.54 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 20 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Benefits

Apart from their superior holding force, neodymium magnets have these key benefits:

Their power is maintained, and after approximately 10 years it drops only by ~1% (according to research),
They are extremely resistant to demagnetization induced by external field influence,
A magnet with a smooth silver surface has better aesthetics,
Magnetic induction on the working layer of the magnet is exceptional,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
Considering the potential of flexible forming and customization to individualized requirements, magnetic components can be produced in a broad palette of forms and dimensions, which expands the range of possible applications,
Universal use in modern industrial fields – they serve a role in mass storage devices, brushless drives, medical devices, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in compact constructions

Weaknesses

Disadvantages of NdFeB magnets:

At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Limited ability of making threads in the magnet and complex forms - preferred is cover - mounting mechanism.
Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
With budget limitations the cost of neodymium magnets is economically unviable,

Lifting parameters

Highest magnetic holding force – what it depends on?

Breakaway force was defined for optimal configuration, assuming:

using a base made of high-permeability steel, functioning as a circuit closing element
possessing a thickness of minimum 10 mm to ensure full flux closure
characterized by smoothness
under conditions of no distance (metal-to-metal)
under vertical application of breakaway force (90-degree angle)
at ambient temperature room level

Determinants of practical lifting force of a magnet

Real force is affected by specific conditions, including (from most important):

Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Steel type – mild steel gives the best results. Alloy admixtures decrease magnetic permeability and holding force.
Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
Temperature influence – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

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 holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Safe handling of NdFeB magnets

Swallowing risk

These products are not intended for children. Eating multiple magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and requires urgent medical intervention.

Avoid contact if allergic

Studies show that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, refrain from direct skin contact or opt for encased magnets.

Pinching danger

Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and broken bones. Use thick gloves.

Dust is flammable

Fire warning: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Life threat

For implant holders: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to handle the magnets.

Magnetic interference

Navigation devices and mobile phones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.

Electronic devices

Data protection: Neodymium magnets can damage data carriers and delicate electronics (heart implants, medical aids, timepieces).

Caution required

Exercise caution. Neodymium magnets act from a long distance and snap with massive power, often quicker than you can react.

Permanent damage

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Magnets are brittle

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets will cause them breaking into small pieces.

Caution! Looking for details? Check our post: Are neodymium magnets dangerous?

MW 8x20 / N38 - cylindrical magnet

Product card - MW 8x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - technical parameters

Table 1: Static force (pull vs gap) - characteristics MW 8x20 / N38

Table 2: Slippage load (wall) MW 8x20 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MW 8x20 / N38

Table 4: Steel thickness (saturation) - power losses MW 8x20 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold MW 8x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MW 8x20 / N38

Table 7: Hazards (implants) - warnings MW 8x20 / N38

Table 8: Impact energy (kinetic energy) - warning MW 8x20 / N38

Table 9: Anti-corrosion coating durability MW 8x20 / N38

Table 10: Construction data (Pc) MW 8x20 / N38

Table 11: Submerged application MW 8x20 / N38

1. Vertical hold

2. Steel saturation

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

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Strengths and weaknesses of Nd2Fe14B magnets.

Benefits

Weaknesses

Lifting parameters

Highest magnetic holding force – what it depends on?

Determinants of practical lifting force of a magnet

Safe handling of NdFeB magnets

Swallowing risk

Avoid contact if allergic

Pinching danger

Dust is flammable

Life threat

Magnetic interference

Electronic devices

Caution required

Permanent damage

Magnets are brittle

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs gap) - characteristics
MW 8x20 / N38

Table 2: Slippage load (wall)
MW 8x20 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 8x20 / N38

Table 4: Steel thickness (saturation) - power losses
MW 8x20 / N38

Table 5: Thermal resistance (material behavior) - resistance threshold
MW 8x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 8x20 / N38

Table 7: Hazards (implants) - warnings
MW 8x20 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 8x20 / N38

Table 9: Anti-corrosion coating durability
MW 8x20 / N38

Table 10: Construction data (P_c)
MW 8x20 / N38

Table 11: Submerged application
MW 8x20 / N38

Strengths and weaknesses of Nd₂Fe₁₄B magnets.