Product available Ships tomorrow

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 parameters »

16.68 ZŁ with VAT / pcs + price for transport

13.56 ZŁ net + 23% VAT / pcs

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Physical properties - 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

Engineering analysis of the magnet - technical parameters

The following values constitute the outcome of a mathematical simulation. Results were calculated on algorithms for the material Nd₂Fe₁₄B. Operational conditions might slightly differ from theoretical values. Please consider these calculations as a supplementary guide during assembly planning.

Table 1: Static force (force 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	strong
1 mm	2180 Gs 218.0 mT	6.59 kg / 14.53 lbs 6591.0 g / 64.7 N	strong
2 mm	2042 Gs 204.2 mT	5.78 kg / 12.75 lbs 5782.0 g / 56.7 N	strong
3 mm	1888 Gs 188.8 mT	4.94 kg / 10.90 lbs 4942.8 g / 48.5 N	strong
5 mm	1564 Gs 156.4 mT	3.39 kg / 7.48 lbs 3394.1 g / 33.3 N	strong
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

Magnetic force drops sharply with every mm of gap. Keep in mind that even a very thin break (e.g., dirt, paint, rust) strongly reduces the pull force. Neodymiums operate most effectively at the point of direct contact; distance kills the force. Observe how quickly the load capacity plummet, when the magnet does not adhere directly to the steel surface. When planning the assembly, avoid additional spacers.

Table 2: Shear hold (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

The table below shows the theoretical shear load needed to initiate the shifting of the magnet vertically on a upright steel plate (considering typical friction coefficient). The holding force depends on the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - 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 mounting a holder on a upright plane (e.g., a board), it will only hold just about 1/5 of its nominal power. Gravitational force as well as a low friction coefficient cause that holders move down faster than they pop off the substrate. Planning a hanger? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a significantly smaller cargo. Using a rubber coating can drastically improve the result.

Table 4: Steel thickness (saturation) - sheet metal selection
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 thin metal plate cannot take in the entire magnetic field, which weakens actual performance of the magnet. Should you attach a powerful product to a weak sheet, the flux will penetrate right through and the attraction force will be weaker. To squeeze 100% of this magnet's potential, you require a sufficiently solid piece of steel. The saturation phenomenon causes that on sheet metal structures (e.g., appliance housings), the product works worse. We advise picking the steel thickness based on the following data.

Table 5: Thermal stability (stability) - resistance threshold
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

Classic neodymiums irreversibly lose parameters after exceeding the maximum temperature. Avoid high temperatures – heat can irreversibly demagnetize this magnet. As the temperature rises, the neodymium's power temporarily decreases. Avoid using this product in hot environments higher than its working range. Exceeding the critical threshold will result in permanent loss of magnetic properties.

*Technical advisory: Temperature resistance depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (pancake types) risk losing magnetic properties at lower temperatures than taller cylinders. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
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 interact from a significantly greater distance than a magnet and sheet setup. The setup of two magnets produces a massive flux and a wider radius of action. Want to build a strong closure? Apply two magnets instead of one magnet and a steel. Be careful that when connecting a pair of magnets, the pinch force is huge. The repulsion force is marginally weaker than the connection force, but still large.
*Flux density in repulsion mode is approximately ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Attention: Calculations refer to friction force of dual same magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (electronics) - 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
Mobile device	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

Extremely neodym field is a serious hazard to IT equipment as well as pacemakers. These neodymiums produce a field that destroys function of sensitive medical devices. Remember: the unseen radiation penetrates the body and glass. Special caution must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - 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

Magnetic elements are prone to chipping – a collision with steel risks their cracking. Pay attention to connection velocity – a neodymium left loose turns into a projectile. Impact energy can trigger coating fragments or injury to skin. Hold the magnet firmly during installation so it doesn't slam with momentum against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear safety glasses when handling with large magnets.

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)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

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)

Flux value passing through the magnet pole. Key data in coil applications as well as sensors. The P_c coefficient defines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
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%

Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

In water, the magnet feels stronger thanks to Archimedes' principle. However, remember the water resistance when pulling the rope quickly.

1. Vertical hold

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

2. Efficiency vs thickness

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

3. Power loss vs temp

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.29

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

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010501-2026

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The presented product is a very strong rod magnet, composed of durable NdFeB material, which, with dimensions of Ø25x5 mm, guarantees the highest energy density. The MW 25x5 / N38AH component features a tolerance of ±0.1mm and professional build quality, making it a perfect solution for the most demanding engineers and designers. As a magnetic rod with significant force (approx. 7.29 kg), this product is available off-the-shelf from our European logistics center, ensuring quick order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating secures it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced automation, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 71.47 N with a weight of only 18.41 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

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 stability in industry, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability 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 warehouse.

This model is characterized by dimensions Ø25x5 mm, which, at a weight of 18.41 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 7.29 kg (force ~71.47 N), which, with such compact dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it 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. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

Apart from their superior magnetic energy, neodymium magnets have these key benefits:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
Magnets perfectly resist against demagnetization caused by foreign field sources,
Thanks to the reflective finish, the coating of nickel, gold, or silver-plated gives an modern appearance,
Magnets are distinguished by huge magnetic induction on the surface,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Possibility of detailed creating and adjusting to defined applications,
Key role in high-tech industry – they are commonly used in magnetic memories, motor assemblies, medical equipment, as well as technologically advanced constructions.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in realizing nuts and complex shapes in magnets, we propose using a housing - magnetic mount.
Health risk related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices are able to complicate diagnosis medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Information about lifting capacity was determined for optimal configuration, assuming:

using a base made of high-permeability steel, serving as a ideal flux conductor
with a thickness of at least 10 mm
with an ground contact surface
with total lack of distance (without paint)
for force applied at a right angle (in the magnet axis)
at temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

During everyday use, the actual holding force results from several key aspects, presented from crucial:

Gap (between the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Material type – ideal substrate is high-permeability steel. Cast iron may attract less.
Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Temperature influence – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet and the plate lowers the load capacity.

Safe handling of neodymium magnets

Crushing force

Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!

Compass and GPS

Remember: rare earth magnets produce a field that interferes with sensitive sensors. Keep a safe distance from your mobile, device, and GPS.

Magnetic media

Powerful magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of min. 10 cm.

Nickel allergy

Studies show that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, refrain from direct skin contact and opt for coated magnets.

Health Danger

For implant holders: Strong magnetic fields disrupt medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.

Fire risk

Powder produced during grinding of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Respect the power

Use magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their force.

Adults only

Product intended for adults. Small elements pose a choking risk, causing intestinal necrosis. Keep out of reach of kids and pets.

Eye protection

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Permanent damage

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.

Danger! Want to know more? Check our post: Are neodymium magnets dangerous?

MW 25x5 / N38AH - cylindrical magnet

Physical properties - MW 25x5 / N38AH - cylindrical magnet

Magnetic properties of material N38AH

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the magnet - technical parameters

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

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

Table 3: Wall mounting (shearing) - vertical pull MW 25x5 / N38AH

Table 4: Steel thickness (saturation) - sheet metal selection MW 25x5 / N38AH

Table 5: Thermal stability (stability) - resistance threshold MW 25x5 / N38AH

Table 6: Magnet-Magnet interaction (attraction) - field collision MW 25x5 / N38AH

Table 7: Hazards (electronics) - precautionary measures MW 25x5 / N38AH

Table 8: Dynamics (cracking risk) - warning MW 25x5 / N38AH

Table 9: Corrosion resistance MW 25x5 / N38AH

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

Table 11: Underwater work (magnet fishing) MW 25x5 / N38AH

1. Vertical hold

2. Efficiency vs thickness

3. Power loss vs temp

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

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

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Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Weaknesses

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Determinants of lifting force in real conditions

Safe handling of neodymium magnets

Crushing force

Compass and GPS

Magnetic media

Nickel allergy

Health Danger

Fire risk

Respect the power

Adults only

Eye protection

Permanent damage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

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

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

Table 3: Wall mounting (shearing) - vertical pull
MW 25x5 / N38AH

Table 4: Steel thickness (saturation) - sheet metal selection
MW 25x5 / N38AH

Table 5: Thermal stability (stability) - resistance threshold
MW 25x5 / N38AH

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 25x5 / N38AH

Table 7: Hazards (electronics) - precautionary measures
MW 25x5 / N38AH

Table 8: Dynamics (cracking risk) - warning
MW 25x5 / N38AH

Table 9: Corrosion resistance
MW 25x5 / N38AH

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

Table 11: Underwater work (magnet fishing)
MW 25x5 / N38AH

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.