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MW 25x5 / N38AH - 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 010501

GTIN/EAN: 5906301814993

Diameter Ø

25 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

18.41 g

Magnetization Direction

↑ axial

Load capacity

7.29 kg / 71.47 N

Magnetic Induction

219.99 mT / 2200 Gs

Coating

[NiCuNi] Nickel

technical specifications »

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Give us a call +48 22 499 98 98 or send us a note through contact form the contact section.
Lifting power and shape of a neodymium magnet can be checked on our online calculation tool.

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Technical of the product - MW 25x5 / N38AH - cylindrical magnet

Specification / characteristics - MW 25x5 / N38AH - cylindrical magnet

properties

properties	values
Cat. no.	010501
GTIN/EAN	5906301814993
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	25 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	18.41 g
Magnetization Direction	↑ axial
Load capacity ~ ?	7.29 kg / 71.47 N
Magnetic Induction ~ ?	219.99 mT / 2200 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38AH

Specification / characteristics MW 25x5 / N38AH - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.5	kGs
remenance Br [min. - max.] ?	1120-1250	mT
coercivity bHc ?	≥ 11.3	kOe
coercivity bHc ?	≥ 899	kA/m
actual internal force iHc	≥ 33	kOe
actual internal force iHc	≥ 2624	kA/m
energy density [min. - max.] ?	36-39	BH max MGOe
energy density [min. - max.] ?	287-310	BH max KJ/m
max. temperature ?	≤ 230	°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 analysis of the magnet - data

These data constitute the result of a engineering analysis. Results rely on algorithms for the material Nd₂Fe₁₄B. Operational performance might slightly differ. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (pull vs distance) - characteristics
MW 25x5 / N38AH

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	2292 Gs 229.2 mT	7.29 kg / 16.07 lbs 7290.0 g / 71.5 N	warning
1 mm	2180 Gs 218.0 mT	6.59 kg / 14.53 lbs 6591.0 g / 64.7 N	warning
2 mm	2042 Gs 204.2 mT	5.78 kg / 12.75 lbs 5782.0 g / 56.7 N	warning
3 mm	1888 Gs 188.8 mT	4.94 kg / 10.90 lbs 4942.8 g / 48.5 N	warning
5 mm	1564 Gs 156.4 mT	3.39 kg / 7.48 lbs 3394.1 g / 33.3 N	warning
10 mm	886 Gs 88.6 mT	1.09 kg / 2.40 lbs 1089.7 g / 10.7 N	weak grip
15 mm	493 Gs 49.3 mT	0.34 kg / 0.74 lbs 336.7 g / 3.3 N	weak grip
20 mm	287 Gs 28.7 mT	0.11 kg / 0.25 lbs 114.0 g / 1.1 N	weak grip
30 mm	115 Gs 11.5 mT	0.02 kg / 0.04 lbs 18.4 g / 0.2 N	weak grip
50 mm	31 Gs 3.1 mT	0.00 kg / 0.00 lbs 1.3 g / 0.0 N	weak grip

Pulling power drops sharply with every mm of gap. Keep in mind that every additional insulation layer (e.g., dirt, paint, rust) strongly diminishes the holding power. Magnetic products operate strongest at the point of direct contact; gap kills the force. See how quickly the parameters drop, when the magnet does not touch directly to the steel surface. When calculating the mounting, avoid unnecessary gaps.

Table 2: Shear capacity (vertical surface)
MW 25x5 / N38AH

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	1.46 kg / 3.21 lbs 1458.0 g / 14.3 N
1 mm	Stal (~0.2)	1.32 kg / 2.91 lbs 1318.0 g / 12.9 N
2 mm	Stal (~0.2)	1.16 kg / 2.55 lbs 1156.0 g / 11.3 N
3 mm	Stal (~0.2)	0.99 kg / 2.18 lbs 988.0 g / 9.7 N
5 mm	Stal (~0.2)	0.68 kg / 1.49 lbs 678.0 g / 6.7 N
10 mm	Stal (~0.2)	0.22 kg / 0.48 lbs 218.0 g / 2.1 N
15 mm	Stal (~0.2)	0.07 kg / 0.15 lbs 68.0 g / 0.7 N
20 mm	Stal (~0.2)	0.02 kg / 0.05 lbs 22.0 g / 0.2 N
30 mm	Stal (~0.2)	0.00 kg / 0.01 lbs 4.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

This section defines the approximate shear load required to start the slippage of the magnet down against a vertical steel wall (considering typical friction coefficient). This value depends on the air gap between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 25x5 / N38AH

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	2.19 kg / 4.82 lbs 2187.0 g / 21.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	1.46 kg / 3.21 lbs 1458.0 g / 14.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.73 kg / 1.61 lbs 729.0 g / 7.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	3.65 kg / 8.04 lbs 3645.0 g / 35.8 N

When hanging a magnet on a upright plane (e.g., a fridge), it will only hold barely approx. 1/5 of its nominal power. Gravity and a low friction coefficient influence the fact that holders slide down faster than they pop off the substrate. Designing a hanger? Consider that the shear force is much weaker than the maximum static pull force. On a slippery surface, the element will give way down under a noticeably lighter weight. Application of an anti-slip pad can significantly increase the grip.

Table 4: Steel thickness (substrate influence) - power losses
MW 25x5 / N38AH

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.73 kg / 1.61 lbs 729.0 g / 7.2 N
1 mm	25%	1.82 kg / 4.02 lbs 1822.5 g / 17.9 N
2 mm	50%	3.65 kg / 8.04 lbs 3645.0 g / 35.8 N
3 mm	75%	5.47 kg / 12.05 lbs 5467.5 g / 53.6 N
5 mm	100%	7.29 kg / 16.07 lbs 7290.0 g / 71.5 N
10 mm	100%	7.29 kg / 16.07 lbs 7290.0 g / 71.5 N
11 mm	100%	7.29 kg / 16.07 lbs 7290.0 g / 71.5 N
12 mm	100%	7.29 kg / 16.07 lbs 7290.0 g / 71.5 N

A too thin steel is incapable of take in the entire magnetic field, which wastes potential of the holder. Should you install a neodymium to a too thin substrate, the magnetism will penetrate right through and the attraction force will be weaker. To achieve full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The material oversaturation means that on thin elements (e.g., appliance housings), the magnet shows lower pull force. We advise picking the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - power drop
MW 25x5 / N38AH

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	7.29 kg / 16.07 lbs 7290.0 g / 71.5 N	OK
80 °C	-6.6%	6.81 kg / 15.01 lbs 6808.9 g / 66.8 N
150 °C	-14.3%	6.25 kg / 13.77 lbs 6247.5 g / 61.3 N
200 °C	-19.8%	5.85 kg / 12.89 lbs 5846.6 g / 57.4 N
230 °C	-23.1%	5.61 kg / 12.36 lbs 5606.0 g / 55.0 N
250 °C	-45.3%	3.99 kg / 8.79 lbs 3987.6 g / 39.1 N

Standard neodymium magnets change their properties power above the temperature limit. Watch out for overheating – excessive heat can permanently demagnetize this product. With every degree above norm, the magnet's power briefly drops. Refrain from using this product close to heaters higher than its operating temperature limit. Ignoring the limit will result in destruction of magnetism.

*Technical advisory: Heat tolerance is determined by both grade, as well as the dimension ratios. Flat magnets (low permeance coefficient) are more susceptible to demagnetization sooner than taller cylinders. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (repulsion) - field range
MW 25x5 / N38AH

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	15.90 kg / 35.06 lbs 3 855 Gs	2.39 kg / 5.26 lbs 2385 g / 23.4 N	N/A
1 mm	15.19 kg / 33.48 lbs 4 480 Gs	2.28 kg / 5.02 lbs 2278 g / 22.3 N	13.67 kg / 30.13 lbs ~0 Gs
2 mm	14.38 kg / 31.70 lbs 4 359 Gs	2.16 kg / 4.75 lbs 2157 g / 21.2 N	12.94 kg / 28.53 lbs ~0 Gs
3 mm	13.51 kg / 29.79 lbs 4 226 Gs	2.03 kg / 4.47 lbs 2027 g / 19.9 N	12.16 kg / 26.81 lbs ~0 Gs
5 mm	11.70 kg / 25.79 lbs 3 932 Gs	1.75 kg / 3.87 lbs 1755 g / 17.2 N	10.53 kg / 23.21 lbs ~0 Gs
10 mm	7.40 kg / 16.32 lbs 3 128 Gs	1.11 kg / 2.45 lbs 1111 g / 10.9 N	6.66 kg / 14.69 lbs ~0 Gs
20 mm	2.38 kg / 5.24 lbs 1 773 Gs	0.36 kg / 0.79 lbs 357 g / 3.5 N	2.14 kg / 4.72 lbs ~0 Gs
50 mm	0.09 kg / 0.21 lbs 354 Gs	0.01 kg / 0.03 lbs 14 g / 0.1 N	0.09 kg / 0.19 lbs ~0 Gs
60 mm	0.04 kg / 0.09 lbs 231 Gs	0.01 kg / 0.01 lbs 6 g / 0.1 N	0.04 kg / 0.08 lbs ~0 Gs
70 mm	0.02 kg / 0.04 lbs 157 Gs	0.00 kg / 0.01 lbs 3 g / 0.0 N	0.02 kg / 0.04 lbs ~0 Gs
80 mm	0.01 kg / 0.02 lbs 112 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.01 kg / 0.01 lbs 82 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.01 lbs 62 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 connection of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Planning to create a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The levitation is a bit weaker than the attraction, but still large.
*The magnetic induction in repulsion mode drops to ~0 Gs at the geometric center of the gap (caused by magnetic field nullification).
Attention: Results show sliding force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - precautionary measures
MW 25x5 / N38AH

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	10.0 cm
Hearing aid	10 Gs (1.0 mT)	7.5 cm
Mechanical watch	20 Gs (2.0 mT)	6.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	5.0 cm
Remote	50 Gs (5.0 mT)	4.5 cm
Payment card	400 Gs (40.0 mT)	2.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation is a real danger to IT equipment as well as medical implants. These NdFeB products produce a flux that destroys function of sensitive medical devices. Remember: the unseen radiation acts through matter and glass. Exceptional care must be exercised by people with cochlear implants and drug dispensers. Influence will be felt by: automatic timepieces, car keys, speakers, and displays. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 25x5 / N38AH

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	21.86 km/h (6.07 m/s)	0.34 J
30 mm	34.81 km/h (9.67 m/s)	0.86 J
50 mm	44.88 km/h (12.47 m/s)	1.43 J
100 mm	63.46 km/h (17.63 m/s)	2.86 J

NdFeB products are prone to chipping – a collision with steel can result in shattering. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can cause material chips or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the neodymium. Wear eye protection when working with powerful specimens.

Table 9: Corrosion resistance
MW 25x5 / N38AH

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

The following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 25x5 / N38AH

Parameter	Value	SI Unit / Description
Magnetic Flux	13 054 Mx	130.5 µWb
P_c Coefficient	0.29	Low (Flat)

Total magnetic flux passing through the pole surface. Key data for generator designers as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Submerged application
MW 25x5 / N38AH

Environment	Effective steel pull	Effect
Air (land)	7.29 kg	Standard
Water (riverbed)	8.35 kg (+1.06 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!

The magnetic field penetrates through water without any losses. Buoyancy helps in lifting finds.

1. Shear force

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

2. Plate thickness effect

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

3. Thermal stability

*For N38 grade, 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) = 0.29

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.

Engineering data and GPSR

Chemical composition

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: 010501-2026

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The presented product is an extremely powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø25x5 mm, guarantees the highest energy density. This specific item boasts high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 7.29 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 sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the pull force of 71.47 N with a weight of only 18.41 g, this rod is indispensable in electronics and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 25.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are suitable for the majority of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø25x5), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 25 mm and height 5 mm. The key parameter here is the holding force amounting to approximately 7.29 kg (force ~71.47 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 25 mm. 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 diametrically if your project requires it.

Pros as well as cons of neodymium magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:

They do not lose magnetism, even during nearly ten years – the decrease in power is only ~1% (theoretically),
They do not lose their magnetic properties even under external field action,
The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to look better,
The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Thanks to flexibility in designing and the capacity to modify to specific needs,
Wide application in high-tech industry – they serve a role in data components, brushless drives, diagnostic systems, also other advanced devices.
Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Limitations

Disadvantages of neodymium magnets:

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
Limited ability of producing threads in the magnet and complicated shapes - recommended is a housing - mounting mechanism.
Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small elements of these devices can complicate diagnosis medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The specified lifting capacity concerns the maximum value, measured under laboratory conditions, meaning:

using a sheet made of low-carbon steel, functioning as a magnetic yoke
whose thickness is min. 10 mm
with an ground contact surface
with total lack of distance (without paint)
for force acting at a right angle (in the magnet axis)
at ambient temperature approx. 20 degrees Celsius

Practical aspects of lifting capacity – factors

In real-world applications, the actual lifting capacity results from several key aspects, presented from crucial:

Air gap (between the magnet and the metal), because even a very small distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
Load vector – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is usually many times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be escaped to the other side.
Material composition – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
Smoothness – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
Temperature – temperature increase causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate reduces the holding force.

Precautions when working with NdFeB magnets

Permanent damage

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

Implant safety

Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.

Keep away from electronics

GPS units and mobile phones are highly susceptible to magnetism. Close proximity with a strong magnet can ruin the internal compass in your phone.

Metal Allergy

Studies show that nickel (the usual finish) is a strong allergen. If you have an allergy, refrain from direct skin contact and choose coated magnets.

Risk of cracking

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Flammability

Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Caution required

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.

Bone fractures

Large magnets can crush fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Protect data

Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, mechanical watches).

Swallowing risk

Strictly store magnets out of reach of children. Risk of swallowing is high, and the effects of magnets connecting inside the body are fatal.

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

MW 25x5 / N38AH - cylindrical magnet

Technical of the product - MW 25x5 / N38AH - cylindrical magnet

Magnetic properties of material N38AH

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the magnet - data

Table 1: Static pull force (pull vs distance) - characteristics MW 25x5 / N38AH

Table 2: Shear capacity (vertical surface) MW 25x5 / N38AH

Table 3: Vertical assembly (sliding) - vertical pull MW 25x5 / N38AH

Table 4: Steel thickness (substrate influence) - power losses MW 25x5 / N38AH

Table 5: Thermal stability (stability) - power drop MW 25x5 / N38AH

Table 6: Two magnets (repulsion) - field range MW 25x5 / N38AH

Table 7: Safety (HSE) (implants) - precautionary measures MW 25x5 / N38AH

Table 8: Impact energy (kinetic energy) - warning MW 25x5 / N38AH

Table 9: Corrosion resistance MW 25x5 / N38AH

Table 10: Construction data (Flux) MW 25x5 / N38AH

Table 11: Submerged application MW 25x5 / N38AH

1. Shear force

2. Plate thickness effect

3. Thermal stability

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

Chemical composition

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Induction

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Pros as well as cons of neodymium magnets.

Advantages

Limitations

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Practical aspects of lifting capacity – factors

Precautions when working with NdFeB magnets

Permanent damage

Implant safety

Keep away from electronics

Metal Allergy

Risk of cracking

Flammability

Caution required

Bone fractures

Protect data

Swallowing risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs distance) - characteristics
MW 25x5 / N38AH

Table 2: Shear capacity (vertical surface)
MW 25x5 / N38AH

Table 3: Vertical assembly (sliding) - vertical pull
MW 25x5 / N38AH

Table 4: Steel thickness (substrate influence) - power losses
MW 25x5 / N38AH

Table 5: Thermal stability (stability) - power drop
MW 25x5 / N38AH

Table 6: Two magnets (repulsion) - field range
MW 25x5 / N38AH

Table 7: Safety (HSE) (implants) - precautionary measures
MW 25x5 / N38AH

Table 8: Impact energy (kinetic energy) - warning
MW 25x5 / N38AH

Table 9: Corrosion resistance
MW 25x5 / N38AH

Table 10: Construction data (Flux)
MW 25x5 / N38AH

Table 11: Submerged application
MW 25x5 / N38AH