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MW 5x25 / N38 - cylindrical magnet

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

cylindrical magnet

Catalog no 010086

GTIN/EAN: 5906301810858

5.00

Diameter Ø

5 mm [±0,1 mm]

Height

25 mm [±0,1 mm]

Weight

3.68 g

Magnetization Direction

↑ axial

Load capacity

0.45 kg / 4.41 N

Magnetic Induction

615.39 mT / 6154 Gs

Coating

[NiCuNi] Nickel

check specifications »

2.31 ZŁ with VAT / pcs + price for transport

1.880 ZŁ net + 23% VAT / pcs

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Technical parameters of the product - MW 5x25 / N38 - cylindrical magnet

Specification / characteristics - MW 5x25 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010086
GTIN/EAN	5906301810858
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	5 mm [±0,1 mm]
Height	25 mm [±0,1 mm]
Weight	3.68 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.45 kg / 4.41 N
Magnetic Induction ~ ?	615.39 mT / 6154 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x25 / 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

Technical modeling of the magnet - technical parameters

Presented values constitute the direct effect of a mathematical analysis. Results are based on models for the material Nd₂Fe₁₄B. Real-world performance might slightly differ. Use these calculations as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - power drop
MW 5x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6144 Gs 614.4 mT	0.45 kg / 0.99 pounds 450.0 g / 4.4 N	safe
1 mm	3869 Gs 386.9 mT	0.18 kg / 0.39 pounds 178.4 g / 1.8 N	safe
2 mm	2300 Gs 230.0 mT	0.06 kg / 0.14 pounds 63.1 g / 0.6 N	safe
3 mm	1412 Gs 141.2 mT	0.02 kg / 0.05 pounds 23.8 g / 0.2 N	safe
5 mm	633 Gs 63.3 mT	0.00 kg / 0.01 pounds 4.8 g / 0.0 N	safe
10 mm	169 Gs 16.9 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	safe
15 mm	72 Gs 7.2 mT	0.00 kg / 0.00 pounds 0.1 g / 0.0 N	safe
20 mm	38 Gs 3.8 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe
30 mm	15 Gs 1.5 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe
50 mm	4 Gs 0.4 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	safe

Pulling power drops drastically per each millimeter of distance. Remember that every additional insulation layer (e.g., contamination, paint, rust) strongly weakens the grip. Magnets hold strongest in perfect adhesion; air break drastically cuts the force. See how flashily the pull force plummet, when the product does not touch flatly to the steel surface. When calculating the assembly, eliminate unnecessary gaps.

Table 2: Slippage force (vertical surface)
MW 5x25 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.09 kg / 0.20 pounds 90.0 g / 0.9 N
1 mm	Stal (~0.2)	0.04 kg / 0.08 pounds 36.0 g / 0.4 N
2 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 12.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 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

The table below indicates the theoretical holding capacity sufficient to cause the slippage of the magnet down along a upright steel wall (assuming typical friction). This value is relative to the gap size between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 5x25 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.14 kg / 0.30 pounds 135.0 g / 1.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.09 kg / 0.20 pounds 90.0 g / 0.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.10 pounds 45.0 g / 0.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.23 kg / 0.50 pounds 225.0 g / 2.2 N

When mounting a magnet on a vertical surface (e.g., a fridge), it will only hold just about 20%-30% of its maximum pull force. Gravity and a weak degree of grip cause that magnets slide down faster than they pop off the substrate. Planning a vertical fastening? Note that the shear force is much weaker than the maximum static pull force. On a smooth steel, the holder will slide down under a noticeably lighter cargo. Utilizing a rubberized coating can significantly improve the result.

Table 4: Material efficiency (saturation) - power losses
MW 5x25 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.10 pounds 45.0 g / 0.4 N
1 mm	25%	0.11 kg / 0.25 pounds 112.5 g / 1.1 N
2 mm	50%	0.23 kg / 0.50 pounds 225.0 g / 2.2 N
3 mm	75%	0.34 kg / 0.74 pounds 337.5 g / 3.3 N
5 mm	100%	0.45 kg / 0.99 pounds 450.0 g / 4.4 N
10 mm	100%	0.45 kg / 0.99 pounds 450.0 g / 4.4 N
11 mm	100%	0.45 kg / 0.99 pounds 450.0 g / 4.4 N
12 mm	100%	0.45 kg / 0.99 pounds 450.0 g / 4.4 N

A thin sheet is unable to focus the full magnetic flux, which wastes potential of the magnet. Should you install a neodymium to a weak sheet, the field will penetrate right through and the holding will be smaller. To achieve 100% of this neodymium's potential, you need a suitably thick backing of metal. The material oversaturation causes that on delicate walls (e.g., thin profiles), the product holds weaker. We advise picking the steel dimension from these parameters.

Table 5: Working in heat (stability) - power drop
MW 5x25 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.45 kg / 0.99 pounds 450.0 g / 4.4 N	OK
40 °C	-2.2%	0.44 kg / 0.97 pounds 440.1 g / 4.3 N	OK
60 °C	-4.4%	0.43 kg / 0.95 pounds 430.2 g / 4.2 N	OK
80 °C	-6.6%	0.42 kg / 0.93 pounds 420.3 g / 4.1 N
100 °C	-28.8%	0.32 kg / 0.71 pounds 320.4 g / 3.1 N

Standard neodymium magnets irreversibly lose strength above the temperature limit. Avoid high temperatures – heat can irreversibly damage this magnet. With increasing heat, the neodymium's power briefly lowers. Avoid using this magnet close to heaters exceeding its working range. Exceeding the critical threshold will lead to destruction of magnetic properties.

*Important note: Thermal stability is determined by both grade, as well as the dimension ratios. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress than long magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 5x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	4.57 kg / 10.08 pounds 6 167 Gs	0.69 kg / 1.51 pounds 686 g / 6.7 N	N/A
1 mm	2.97 kg / 6.55 pounds 9 909 Gs	0.45 kg / 0.98 pounds 446 g / 4.4 N	2.67 kg / 5.90 pounds ~0 Gs
2 mm	1.81 kg / 3.99 pounds 7 738 Gs	0.27 kg / 0.60 pounds 272 g / 2.7 N	1.63 kg / 3.60 pounds ~0 Gs
3 mm	1.08 kg / 2.37 pounds 5 965 Gs	0.16 kg / 0.36 pounds 162 g / 1.6 N	0.97 kg / 2.14 pounds ~0 Gs
5 mm	0.39 kg / 0.86 pounds 3 581 Gs	0.06 kg / 0.13 pounds 58 g / 0.6 N	0.35 kg / 0.77 pounds ~0 Gs
10 mm	0.05 kg / 0.11 pounds 1 266 Gs	0.01 kg / 0.02 pounds 7 g / 0.1 N	0.04 kg / 0.10 pounds ~0 Gs
20 mm	0.00 kg / 0.01 pounds 339 Gs	0.00 kg / 0.00 pounds 1 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
50 mm	0.00 kg / 0.00 pounds 46 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 30 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 21 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 15 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 11 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 9 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnets attract each other from a significantly greater distance than a neodymium and metal setup. The setup of two magnets creates a more powerful interaction and a further horizon of action. Planning to create a powerful holder? Apply two magnets instead of one magnet and a steel. Remember that when attracting two neodymiums, the pinch force is massive. The repulsion force is marginally weaker than the attraction, but still significant.
*The magnetic induction in repulsion mode reaches ~0 Gs at the geometric center of the gap (resulting from vector opposition).
* Calculations refer to friction force of two matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MW 5x25 / N38

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

A strong magnetic field is a real danger to electronic devices and medical implants. These NdFeB products generate a flux that prevents correct functioning of sensitive medical devices. Be aware: the invisible magnetic field passes through tissues and glass. Increased vigilance must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and displays. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - collision effects
MW 5x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	11.16 km/h (3.10 m/s)	0.02 J
30 mm	19.32 km/h (5.37 m/s)	0.05 J
50 mm	24.94 km/h (6.93 m/s)	0.09 J
100 mm	35.27 km/h (9.80 m/s)	0.18 J

NdFeB products are delicate – a collision with steel risks their cracking. Control the attraction moment – a neodymium left loose speeds with massive force. Kinetic force can cause material chips or injury to skin. Hold the magnet firmly during mounting so it doesn't slam with momentum against the metal. A collision at high speed ends with a crack of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Corrosion resistance
MW 5x25 / 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 (Flux)
MW 5x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	1 450 Mx	14.5 µWb
P_c Coefficient	1.55	High (Stable)

Total magnetic flux emitted by the magnet pole. Key data for generator designers as well as sensors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MW 5x25 / N38

Environment	Effective steel pull	Effect
Air (land)	0.45 kg	Standard
Water (riverbed)	0.52 kg (+0.07 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!

Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Caution: On a vertical surface, the magnet holds merely ~20% of its nominal pull.

2. Efficiency vs thickness

*Thin metal sheet (e.g. 0.5mm PC case) severely limits 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) = 1.55

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: 010086-2026

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The offered product is an exceptionally strong rod magnet, made from durable NdFeB material, which, at dimensions of Ø5x25 mm, guarantees the highest energy density. The MW 5x25 / N38 component boasts an accuracy of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.45 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 4.41 N with a weight of only 3.68 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are suitable for 90% of applications in modeling and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø5x25), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

This model is characterized by dimensions Ø5x25 mm, which, at a weight of 3.68 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 0.45 kg (force ~4.41 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This rod magnet is magnetized axially (along the height of 25 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.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:

They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (according to theory),
Neodymium magnets prove to be exceptionally resistant to demagnetization caused by external field sources,
In other words, due to the aesthetic layer of nickel, the element gains visual value,
They feature high magnetic induction at the operating surface, which affects their effectiveness,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to the potential of flexible shaping and customization to custom projects, magnetic components can be created in a wide range of geometric configurations, which amplifies use scope,
Universal use in future technologies – they are utilized in computer drives, brushless drives, medical devices, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which enables their usage in compact constructions

Weaknesses

Disadvantages of neodymium magnets:

They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 extremely resistant to heat
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Due to limitations in realizing threads and complex shapes in magnets, we propose using casing - magnetic holder.
Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical in case of swallowing.
Due to expensive raw materials, their price is higher than average,

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

Magnet power was defined for the most favorable conditions, taking into account:

using a base made of mild steel, acting as a ideal flux conductor
with a thickness minimum 10 mm
with a plane cleaned and smooth
under conditions of no distance (metal-to-metal)
during pulling in a direction perpendicular to the mounting surface
at room temperature

Lifting capacity in real conditions – factors

Please note that the application force will differ influenced by elements below, starting with the most relevant:

Air gap (between the magnet and the plate), since even a very small clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to paint, rust or dirt).
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
Material composition – different alloys attracts identically. Alloy additives worsen the attraction effect.
Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
Thermal environment – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets

Power loss in heat

Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

Choking Hazard

Only for adults. Tiny parts pose a choking risk, leading to intestinal necrosis. Keep out of reach of children and animals.

Allergic reactions

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness occurs, immediately stop handling magnets and wear gloves.

Finger safety

Big blocks can break fingers instantly. Do not place your hand betwixt two attracting surfaces.

Dust explosion hazard

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Risk of cracking

Neodymium magnets are ceramic materials, which means they are prone to chipping. Clashing of two magnets leads to them breaking into small pieces.

Phone sensors

Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the internal compass in your phone.

Implant safety

Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Respect the power

Use magnets with awareness. Their huge power can surprise even experienced users. Plan your moves and respect their power.

Keep away from computers

Device Safety: Neodymium magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Attention! Want to know more? Read our article: Why are neodymium magnets dangerous?

MW 5x25 / N38 - cylindrical magnet

Technical parameters of the product - MW 5x25 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical modeling of the magnet - technical parameters

Table 1: Static force (force vs gap) - power drop MW 5x25 / N38

Table 2: Slippage force (vertical surface) MW 5x25 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 5x25 / N38

Table 4: Material efficiency (saturation) - power losses MW 5x25 / N38

Table 5: Working in heat (stability) - power drop MW 5x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range MW 5x25 / N38

Table 7: Hazards (electronics) - precautionary measures MW 5x25 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 5x25 / N38

Table 9: Corrosion resistance MW 5x25 / N38

Table 10: Construction data (Flux) MW 5x25 / N38

Table 11: Physics of underwater searching MW 5x25 / N38

1. Shear force

2. Efficiency vs thickness

3. Power loss vs temp

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Benefits

Weaknesses

Pull force analysis

Detachment force of the magnet in optimal conditions – what it depends on?

Lifting capacity in real conditions – factors

H&S for magnets

Power loss in heat

Choking Hazard

Allergic reactions

Finger safety

Dust explosion hazard

Risk of cracking

Phone sensors

Implant safety

Respect the power

Keep away from computers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - power drop
MW 5x25 / N38

Table 2: Slippage force (vertical surface)
MW 5x25 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 5x25 / N38

Table 4: Material efficiency (saturation) - power losses
MW 5x25 / N38

Table 5: Working in heat (stability) - power drop
MW 5x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - field range
MW 5x25 / N38

Table 7: Hazards (electronics) - precautionary measures
MW 5x25 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 5x25 / N38

Table 9: Corrosion resistance
MW 5x25 / N38

Table 10: Construction data (Flux)
MW 5x25 / N38

Table 11: Physics of underwater searching
MW 5x25 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.