Product available Ships tomorrow

MP 41x15x10 / N38 - ring 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

ring magnet

Catalog no 030200

GTIN/EAN: 5906301812173

5.00

Diameter

41 mm [±0,1 mm]

internal diameter Ø

15 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

85.77 g

Magnetization Direction

↑ axial

Load capacity

24.44 kg / 239.78 N

Magnetic Induction

271.77 mT / 2718 Gs

Coating

[NiCuNi] Nickel

see technical specifications »

50.00 ZŁ with VAT / pcs + price for transport

40.65 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

40.65 ZŁ

50.00 ZŁ

price from 20 pcs

38.21 ZŁ

47.00 ZŁ

price from 70 pcs

35.77 ZŁ

44.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Call us now +48 888 99 98 98 otherwise send us a note via request form our website.
Strength and shape of neodymium magnets can be calculated using our modular calculator.

Orders submitted before 14:00 will be dispatched today!

Technical - MP 41x15x10 / N38 - ring magnet

Specification / characteristics - MP 41x15x10 / N38 - ring magnet

properties

properties	values
Cat. no.	030200
GTIN/EAN	5906301812173
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	41 mm [±0,1 mm]
internal diameter Ø	15 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	85.77 g
Magnetization Direction	↑ axial
Load capacity ~ ?	24.44 kg / 239.78 N
Magnetic Induction ~ ?	271.77 mT / 2718 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 41x15x10 / N38 - ring 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

Physical analysis of the assembly - data

The following data constitute the direct effect of a physical analysis. Values are based on algorithms for the class Nd₂Fe₁₄B. Operational conditions may differ from theoretical values. Use these calculations as a reference point for designers.

Table 1: Static force (pull vs distance) - characteristics
MP 41x15x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5232 Gs 523.2 mT	24.44 kg / 53.88 pounds 24440.0 g / 239.8 N	dangerous!
1 mm	4978 Gs 497.8 mT	22.12 kg / 48.77 pounds 22120.4 g / 217.0 N	dangerous!
2 mm	4720 Gs 472.0 mT	19.89 kg / 43.85 pounds 19888.8 g / 195.1 N	dangerous!
3 mm	4464 Gs 446.4 mT	17.79 kg / 39.22 pounds 17788.4 g / 174.5 N	dangerous!
5 mm	3964 Gs 396.4 mT	14.03 kg / 30.93 pounds 14030.8 g / 137.6 N	dangerous!
10 mm	2861 Gs 286.1 mT	7.31 kg / 16.11 pounds 7308.1 g / 71.7 N	strong
15 mm	2028 Gs 202.8 mT	3.67 kg / 8.09 pounds 3670.1 g / 36.0 N	strong
20 mm	1443 Gs 144.3 mT	1.86 kg / 4.10 pounds 1858.4 g / 18.2 N	low risk
30 mm	770 Gs 77.0 mT	0.53 kg / 1.17 pounds 529.8 g / 5.2 N	low risk
50 mm	280 Gs 28.0 mT	0.07 kg / 0.15 pounds 69.8 g / 0.7 N	low risk

Grip strength drops sharply per each millimeter of distance. Remember that even a very thin break (e.g., contamination, varnish, veneer) strongly reduces the pull force. Magnets work strongest during direct contact; gap kills the power. Notice how rapidly the load capacity drop, when the product does not adhere flatly to the steel surface. When calculating the arrangement, eliminate redundant distances.

Table 2: Sliding force (vertical surface)
MP 41x15x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.89 kg / 10.78 pounds 4888.0 g / 48.0 N
1 mm	Stal (~0.2)	4.42 kg / 9.75 pounds 4424.0 g / 43.4 N
2 mm	Stal (~0.2)	3.98 kg / 8.77 pounds 3978.0 g / 39.0 N
3 mm	Stal (~0.2)	3.56 kg / 7.84 pounds 3558.0 g / 34.9 N
5 mm	Stal (~0.2)	2.81 kg / 6.19 pounds 2806.0 g / 27.5 N
10 mm	Stal (~0.2)	1.46 kg / 3.22 pounds 1462.0 g / 14.3 N
15 mm	Stal (~0.2)	0.73 kg / 1.62 pounds 734.0 g / 7.2 N
20 mm	Stal (~0.2)	0.37 kg / 0.82 pounds 372.0 g / 3.6 N
30 mm	Stal (~0.2)	0.11 kg / 0.23 pounds 106.0 g / 1.0 N
50 mm	Stal (~0.2)	0.01 kg / 0.03 pounds 14.0 g / 0.1 N

The following data shows the estimated force needed to initiate the shifting of the magnet vertically against a vertical steel wall (considering standard friction coefficient). This parameter is a function of the separation distance between the magnet and the surface.

Table 3: Vertical assembly (shearing) - vertical pull
MP 41x15x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	7.33 kg / 16.16 pounds 7332.0 g / 71.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.89 kg / 10.78 pounds 4888.0 g / 48.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.44 kg / 5.39 pounds 2444.0 g / 24.0 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	12.22 kg / 26.94 pounds 12220.0 g / 119.9 N

When hanging a element on a vertical surface (e.g., a fridge), it you can count on barely about 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient mean that magnets move down faster than they pop off the substrate. Want to create a wall mount? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a painted metal, the holder will give way down under a significantly smaller cargo. Utilizing a rubberized pad can effectively improve the result.

Table 4: Steel thickness (saturation) - power losses
MP 41x15x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.22 kg / 2.69 pounds 1222.0 g / 12.0 N
1 mm	13%	3.06 kg / 6.74 pounds 3055.0 g / 30.0 N
2 mm	25%	6.11 kg / 13.47 pounds 6110.0 g / 59.9 N
3 mm	38%	9.17 kg / 20.21 pounds 9165.0 g / 89.9 N
5 mm	63%	15.28 kg / 33.68 pounds 15275.0 g / 149.8 N
10 mm	100%	24.44 kg / 53.88 pounds 24440.0 g / 239.8 N
11 mm	100%	24.44 kg / 53.88 pounds 24440.0 g / 239.8 N
12 mm	100%	24.44 kg / 53.88 pounds 24440.0 g / 239.8 N

A too thin steel is incapable of focus the entire magnetic field, which squanders power of the holder. If you attach a powerful product to a too thin substrate, the flux will penetrate right through and the holding will be smaller. To squeeze the maximum of this magnet's potential, you require a sufficiently solid piece of steel. The saturation phenomenon means that on delicate walls (e.g., thin profiles), the magnet works worse. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal resistance (stability) - resistance threshold
MP 41x15x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	24.44 kg / 53.88 pounds 24440.0 g / 239.8 N	OK
40 °C	-2.2%	23.90 kg / 52.70 pounds 23902.3 g / 234.5 N	OK
60 °C	-4.4%	23.36 kg / 51.51 pounds 23364.6 g / 229.2 N	OK
80 °C	-6.6%	22.83 kg / 50.32 pounds 22827.0 g / 223.9 N
100 °C	-28.8%	17.40 kg / 38.36 pounds 17401.3 g / 170.7 N

Standard neodymium magnets lose strength after exceeding the maximum temperature. Avoid high temperatures – excessive heat can permanently damage this product. With increasing heat, the neodymium's power momentarily lowers. Refrain from using this magnet close to heaters exceeding its safe range. Exceeding the critical threshold will result in destruction of magnetic properties.

*Technical advisory: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low Pc) are more susceptible to demagnetization under lower heat stress than long magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field range
MP 41x15x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	178.13 kg / 392.71 pounds 5 907 Gs	26.72 kg / 58.91 pounds 26719 g / 262.1 N	N/A
1 mm	169.67 kg / 374.06 pounds 10 213 Gs	25.45 kg / 56.11 pounds 25451 g / 249.7 N	152.70 kg / 336.65 pounds ~0 Gs
2 mm	161.22 kg / 355.43 pounds 9 955 Gs	24.18 kg / 53.32 pounds 24183 g / 237.2 N	145.10 kg / 319.89 pounds ~0 Gs
3 mm	152.98 kg / 337.26 pounds 9 697 Gs	22.95 kg / 50.59 pounds 22947 g / 225.1 N	137.68 kg / 303.53 pounds ~0 Gs
5 mm	137.18 kg / 302.42 pounds 9 183 Gs	20.58 kg / 45.36 pounds 20577 g / 201.9 N	123.46 kg / 272.18 pounds ~0 Gs
10 mm	102.26 kg / 225.45 pounds 7 929 Gs	15.34 kg / 33.82 pounds 15339 g / 150.5 N	92.04 kg / 202.90 pounds ~0 Gs
20 mm	53.26 kg / 117.43 pounds 5 722 Gs	7.99 kg / 17.61 pounds 7990 g / 78.4 N	47.94 kg / 105.69 pounds ~0 Gs
50 mm	7.08 kg / 15.62 pounds 2 087 Gs	1.06 kg / 2.34 pounds 1063 g / 10.4 N	6.38 kg / 14.06 pounds ~0 Gs
60 mm	3.86 kg / 8.51 pounds 1 541 Gs	0.58 kg / 1.28 pounds 579 g / 5.7 N	3.48 kg / 7.66 pounds ~0 Gs
70 mm	2.20 kg / 4.84 pounds 1 162 Gs	0.33 kg / 0.73 pounds 330 g / 3.2 N	1.98 kg / 4.36 pounds ~0 Gs
80 mm	1.30 kg / 2.87 pounds 895 Gs	0.20 kg / 0.43 pounds 195 g / 1.9 N	1.17 kg / 2.58 pounds ~0 Gs
90 mm	0.80 kg / 1.76 pounds 701 Gs	0.12 kg / 0.26 pounds 120 g / 1.2 N	0.72 kg / 1.59 pounds ~0 Gs
100 mm	0.51 kg / 1.12 pounds 559 Gs	0.08 kg / 0.17 pounds 76 g / 0.7 N	0.46 kg / 1.01 pounds ~0 Gs

Two strong neodymiums attract each other from a wider radius than a neodymium and metal combination. Such a system of magnet-to-magnet produces a massive flux and a larger range of action. Planning to create a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Remember that when bringing together two magnets, the pinch force is extreme. The levitation is slightly lower than the connection force, but still significant.
*Flux density for N-N configuration drops to ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Note: Estimates demonstrate friction force of dual same neodymium magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (implants) - precautionary measures
MP 41x15x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	24.0 cm
Hearing aid	10 Gs (1.0 mT)	19.0 cm
Mechanical watch	20 Gs (2.0 mT)	15.0 cm
Mobile device	40 Gs (4.0 mT)	11.5 cm
Car key	50 Gs (5.0 mT)	10.5 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

A strong magnetic field is a serious hazard to IT equipment and medical implants. These magnets produce a flux that disrupts operation of sensitive medical devices. Be aware: the invisible magnetic field acts through matter and plastic. Increased vigilance must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Collisions (kinetic energy) - collision effects
MP 41x15x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.95 km/h (5.54 m/s)	1.32 J
30 mm	29.88 km/h (8.30 m/s)	2.96 J
50 mm	38.13 km/h (10.59 m/s)	4.81 J
100 mm	53.84 km/h (14.96 m/s)	9.59 J

Neodymium magnets are delicate – a collision with steel causes immediate chipping. Control the attraction moment – a neodymium left loose becomes dangerous. Impact energy can trigger coating fragments or painful pinches to fingers. Always hold the magnet during mounting so it doesn't hit violently against the metal. A collision at high speed means shattering of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Anti-corrosion coating durability
MP 41x15x10 / 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. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MP 41x15x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	56 505 Mx	565.0 µWb
P_c Coefficient	0.80	High (Stable)

Flux value passing through the magnet pole. Essential parameter when building generators as well as sensors. P_c value determines the magnet's operating point.

Table 11: Underwater work (magnet fishing)
MP 41x15x10 / N38

Environment	Effective steel pull	Effect
Air (land)	24.44 kg	Standard
Water (riverbed)	27.98 kg (+3.54 kg buoyancy gain)	+14.5%

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

Water displaces steel, making heavy objects slightly lighter. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Note: On a vertical wall, the magnet retains merely approx. 20-30% of its max power.

2. Efficiency vs thickness

*Thin steel (e.g. 0.5mm PC case) drastically reduces 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) = 0.80

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: 030200-2026

Magnet Unit Converter

Magnet pull force

Kilograms (kg)

Force in lbs

Field Strength

Gauss (Gs)

Tesla (T)

Input a figure in just one field to see the conversion in the other units right away.

Other deals

Product available Ships tomorrow

MPL 40x20x10 / N38 - lamellar magnet

31.00 ZŁ brutto / pcs

Product available Ships tomorrow

UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

3.80 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 15x10x2 / N38 - lamellar magnet

1.316 ZŁ brutto / pcs

Product available Ships tomorrow

SM 25x300 [2xM8] / N42 - magnetic separator

836.40 ZŁ brutto / pcs

It is ideally suited for places where solid attachment of the magnet to the substrate is required without the risk of detachment. Mounting is clean and reversible, unlike gluing. It is also often used in advertising for fixing signs and in workshops for organizing tools.

This is a crucial issue when working with model MP 41x15x10 / N38. Neodymium magnets are sintered ceramics, which means they are very brittle and inelastic. When tightening the screw, you must maintain caution. We recommend tightening manually with a screwdriver, not an impact driver, because too much pressure will cause the ring to crack. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.

These magnets are coated with standard Ni-Cu-Ni plating, which protects them in indoor conditions, but is not sufficient for rain. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. If you must use it outside, paint it with anti-corrosion paint after mounting.

A screw or bolt with a thread diameter smaller than 15 mm fits this model. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.

It is a magnetic ring with a diameter of 41 mm and thickness 10 mm. The key parameter here is the holding force amounting to approximately 24.44 kg (force ~239.78 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 15 mm.

The poles are located on the planes with holes, not on the sides of the ring. In the case of connecting two rings, make sure one is turned the right way. When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths as well as weaknesses of rare earth magnets.

Advantages

In addition to their long-term stability, neodymium magnets provide the following advantages:

They do not lose strength, even over around ten years – the reduction in strength is only ~1% (theoretically),
They feature excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to look better,
They show high magnetic induction at the operating surface, making them more effective,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Possibility of exact creating as well as optimizing to specific conditions,
Universal use in advanced technology sectors – they are commonly used in data components, electric motors, medical devices, and multitasking production systems.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
We recommend cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Lifting parameters

Maximum magnetic pulling force – what it depends on?

Information about lifting capacity is the result of a measurement for ideal contact conditions, taking into account:

on a plate made of structural steel, optimally conducting the magnetic flux
possessing a thickness of minimum 10 mm to avoid saturation
with a surface cleaned and smooth
with zero gap (no impurities)
during pulling in a direction perpendicular to the mounting surface
in temp. approx. 20°C

Magnet lifting force in use – key factors

Bear in mind that the working load will differ depending on the following factors, in order of importance:

Air gap (betwixt the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) can cause a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Angle of force application – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
Material type – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

Lifting capacity was determined using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet’s surface and the plate lowers the load capacity.

Warnings

Skin irritation risks

Certain individuals have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching may cause an allergic reaction. We recommend use protective gloves.

Bone fractures

Large magnets can smash fingers in a fraction of a second. Under no circumstances place your hand betwixt two strong magnets.

This is not a toy

Only for adults. Tiny parts can be swallowed, leading to severe trauma. Keep away from kids and pets.

Electronic devices

Avoid bringing magnets close to a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Mechanical processing

Machining of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Conscious usage

Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.

Magnet fragility

Beware of splinters. Magnets can explode upon uncontrolled impact, launching shards into the air. Wear goggles.

Demagnetization risk

Keep cool. Neodymium magnets are susceptible to temperature. If you require resistance above 80°C, look for HT versions (H, SH, UH).

GPS Danger

Navigation devices and mobile phones are highly sensitive to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Danger to pacemakers

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Attention! Need more info? Read our article: Are neodymium magnets dangerous?

MP 41x15x10 / N38 - ring magnet

Technical - MP 41x15x10 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - data

Table 1: Static force (pull vs distance) - characteristics MP 41x15x10 / N38

Table 2: Sliding force (vertical surface) MP 41x15x10 / N38

Table 3: Vertical assembly (shearing) - vertical pull MP 41x15x10 / N38

Table 4: Steel thickness (saturation) - power losses MP 41x15x10 / N38

Table 5: Thermal resistance (stability) - resistance threshold MP 41x15x10 / N38

Table 6: Two magnets (attraction) - field range MP 41x15x10 / N38

Table 7: Hazards (implants) - precautionary measures MP 41x15x10 / N38

Table 8: Collisions (kinetic energy) - collision effects MP 41x15x10 / N38

Table 9: Anti-corrosion coating durability MP 41x15x10 / N38

Table 10: Electrical data (Pc) MP 41x15x10 / N38

Table 11: Underwater work (magnet fishing) MP 41x15x10 / N38

1. Shear force

2. Efficiency vs thickness

3. Power loss vs temp

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

Chemical composition

Ecology and recycling (GPSR)

Magnet pull force

Field Strength

Other deals

MPL 40x20x10 / N38 - lamellar magnet

UMGW 16x13x5 [M4] GW / N38 - magnetic holder internal thread

MPL 15x10x2 / N38 - lamellar magnet

SM 25x300 [2xM8] / N42 - magnetic separator

Strengths as well as weaknesses of rare earth magnets.

Advantages

Weaknesses

Lifting parameters

Maximum magnetic pulling force – what it depends on?

Magnet lifting force in use – key factors

Warnings

Skin irritation risks

Bone fractures

This is not a toy

Electronic devices

Mechanical processing

Conscious usage

Magnet fragility

Demagnetization risk

GPS Danger

Danger to pacemakers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - characteristics
MP 41x15x10 / N38

Table 2: Sliding force (vertical surface)
MP 41x15x10 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MP 41x15x10 / N38

Table 4: Steel thickness (saturation) - power losses
MP 41x15x10 / N38

Table 5: Thermal resistance (stability) - resistance threshold
MP 41x15x10 / N38

Table 6: Two magnets (attraction) - field range
MP 41x15x10 / N38

Table 7: Hazards (implants) - precautionary measures
MP 41x15x10 / N38

Table 8: Collisions (kinetic energy) - collision effects
MP 41x15x10 / N38

Table 9: Anti-corrosion coating durability
MP 41x15x10 / N38

Table 10: Electrical data (P_c)
MP 41x15x10 / N38

Table 11: Underwater work (magnet fishing)
MP 41x15x10 / N38