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MP 5x2.7/1.2x5 C / 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 030201

GTIN/EAN: 5906301812180

5.00

Diameter

5 mm [±0,1 mm]

internal diameter Ø

2.7/1.2 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

0.69 g

Magnetization Direction

↑ axial

Load capacity

0.75 kg / 7.31 N

Magnetic Induction

553.14 mT / 5531 Gs

Coating

[NiCuNi] Nickel

see technical data »

0.836 ZŁ with VAT / pcs + price for transport

0.680 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Pick up the phone and ask +48 22 499 98 98 if you prefer drop us a message using our online form through our site.
Parameters and appearance of a neodymium magnet can be tested on our online calculation tool.

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Product card - MP 5x2.7/1.2x5 C / N38 - ring magnet

Specification / characteristics - MP 5x2.7/1.2x5 C / N38 - ring magnet

properties

properties	values
Cat. no.	030201
GTIN/EAN	5906301812180
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	5 mm [±0,1 mm]
internal diameter Ø	2.7/1.2 mm [±0,1 mm]
Height	5 mm [±0,1 mm]
Weight	0.69 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.75 kg / 7.31 N
Magnetic Induction ~ ?	553.14 mT / 5531 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 5x2.7/1.2x5 C / 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 simulation of the assembly - data

The following information are the outcome of a physical simulation. Results rely on models for the class Nd₂Fe₁₄B. Operational parameters may differ from theoretical values. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
MP 5x2.7/1.2x5 C / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5322 Gs 532.2 mT	0.75 kg / 1.65 LBS 750.0 g / 7.4 N	weak grip
1 mm	3295 Gs 329.5 mT	0.29 kg / 0.63 LBS 287.5 g / 2.8 N	weak grip
2 mm	1883 Gs 188.3 mT	0.09 kg / 0.21 LBS 93.9 g / 0.9 N	weak grip
3 mm	1098 Gs 109.8 mT	0.03 kg / 0.07 LBS 31.9 g / 0.3 N	weak grip
5 mm	440 Gs 44.0 mT	0.01 kg / 0.01 LBS 5.1 g / 0.1 N	weak grip
10 mm	92 Gs 9.2 mT	0.00 kg / 0.00 LBS 0.2 g / 0.0 N	weak grip
15 mm	33 Gs 3.3 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
20 mm	15 Gs 1.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
30 mm	5 Gs 0.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	weak grip

Pulling power drops sharply per each millimeter of gap. Remember that even the smallest gap (e.g., dirt, varnish, dust) noticeably reduces the pull force. Neodymiums hold most effectively at the point of direct contact; air break nullifies the power. Observe how quickly the pull force drop, when the product does not adhere flatly to the steel surface. When designing the assembly, eliminate additional spacers.

Table 2: Sliding capacity (vertical surface)
MP 5x2.7/1.2x5 C / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.15 kg / 0.33 LBS 150.0 g / 1.5 N
1 mm	Stal (~0.2)	0.06 kg / 0.13 LBS 58.0 g / 0.6 N
2 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 18.0 g / 0.2 N
3 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 g / 0.1 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 0.0 g / 0.0 N

This section calculates the theoretical weight limit required to cause the slippage of the magnet downwards on a vertical metal surface (assuming standard friction). This parameter varies with the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MP 5x2.7/1.2x5 C / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.22 kg / 0.50 LBS 225.0 g / 2.2 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.15 kg / 0.33 LBS 150.0 g / 1.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.08 kg / 0.17 LBS 75.0 g / 0.7 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.38 kg / 0.83 LBS 375.0 g / 3.7 N

When hanging a magnet on a upright surface (e.g., a car body), it you can count on just about 20%-30% of its nominal power. Gravity and a weak degree of grip mean that holders slide down easier than they pull off. Want to create a wall mount? Note that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the magnet will slide down under a noticeably lighter load. Utilizing a rubberized layer can significantly improve the result.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 5x2.7/1.2x5 C / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.08 kg / 0.17 LBS 75.0 g / 0.7 N
1 mm	25%	0.19 kg / 0.41 LBS 187.5 g / 1.8 N
2 mm	50%	0.38 kg / 0.83 LBS 375.0 g / 3.7 N
3 mm	75%	0.56 kg / 1.24 LBS 562.5 g / 5.5 N
5 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N
10 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N
11 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N
12 mm	100%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N

A thin metal plate is incapable of focus the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a weak sheet, the field will pass right through and the pull force will drop sharply. To utilize the maximum of this magnet's power, you need a suitably thick backing of steel. The material oversaturation means that on sheet metal structures (e.g., appliance housings), the magnet works worse. We advise picking the steel cross-section from these parameters.

Table 5: Thermal stability (stability) - thermal limit
MP 5x2.7/1.2x5 C / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.75 kg / 1.65 LBS 750.0 g / 7.4 N	OK
40 °C	-2.2%	0.73 kg / 1.62 LBS 733.5 g / 7.2 N	OK
60 °C	-4.4%	0.72 kg / 1.58 LBS 717.0 g / 7.0 N	OK
80 °C	-6.6%	0.70 kg / 1.54 LBS 700.5 g / 6.9 N
100 °C	-28.8%	0.53 kg / 1.18 LBS 534.0 g / 5.2 N

Ordinary NdFeB products lose parameters after exceeding the maximum temperature. Avoid high temperatures – heat can permanently destroy this magnet. With every degree above norm, the magnet's force briefly lowers. Do not use this magnet close to heaters exceeding its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetism.

*Engineering note: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) may lose charge permanently sooner than long magnets. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Two magnets (repulsion) - forces in the system
MP 5x2.7/1.2x5 C / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.75 kg / 6.06 LBS 5 924 Gs	0.41 kg / 0.91 LBS 412 g / 4.0 N	N/A
1 mm	1.77 kg / 3.90 LBS 8 541 Gs	0.27 kg / 0.58 LBS 265 g / 2.6 N	1.59 kg / 3.51 LBS ~0 Gs
2 mm	1.05 kg / 2.32 LBS 6 590 Gs	0.16 kg / 0.35 LBS 158 g / 1.5 N	0.95 kg / 2.09 LBS ~0 Gs
3 mm	0.60 kg / 1.33 LBS 4 992 Gs	0.09 kg / 0.20 LBS 91 g / 0.9 N	0.54 kg / 1.20 LBS ~0 Gs
5 mm	0.20 kg / 0.44 LBS 2 860 Gs	0.03 kg / 0.07 LBS 30 g / 0.3 N	0.18 kg / 0.39 LBS ~0 Gs
10 mm	0.02 kg / 0.04 LBS 880 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 184 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
50 mm	0.00 kg / 0.00 LBS 16 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
60 mm	0.00 kg / 0.00 LBS 10 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
70 mm	0.00 kg / 0.00 LBS 6 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
80 mm	0.00 kg / 0.00 LBS 4 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
90 mm	0.00 kg / 0.00 LBS 3 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs
100 mm	0.00 kg / 0.00 LBS 2 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums interact from a wider radius than a neodymium and metal combination. The connection of two magnets creates a more powerful interaction and a further horizon of performance. Planning to create a powerful holder? Apply two magnets instead of one magnet and a steel. Exercise caution that when bringing together two magnets, the collision energy is massive. The levitation is slightly lower than the attraction, but still impressive.
*Flux density in repulsion mode is approximately ~0 Gs at the midpoint of the gap (resulting from vector opposition).
Important: Estimates apply to friction force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MP 5x2.7/1.2x5 C / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Mechanical watch	20 Gs (2.0 mT)	2.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	1.5 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

Powerful magnet radiation is a large risk to electronics as well as medical implants. These magnets generate a flux that destroys function of digital equipment. Be aware: the invisible magnetic field acts through matter and plastic. Exceptional care must be taken by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, car keys, speakers, and screens. Do not bring the product near payment cards, hard drives, or precise measuring instruments.

Table 8: Impact energy (cracking risk) - collision effects
MP 5x2.7/1.2x5 C / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	33.26 km/h (9.24 m/s)	0.03 J
30 mm	57.59 km/h (16.00 m/s)	0.09 J
50 mm	74.35 km/h (20.65 m/s)	0.15 J
100 mm	105.14 km/h (29.21 m/s)	0.29 J

Neodymium magnets are prone to chipping – a collision with steel risks their cracking. Watch the impact speed – a neodymium left loose becomes dangerous. Striking energy can trigger coating fragments or injury to skin. Always hold the magnet during installation so it doesn't hit violently against the metal. A contact at a velocity of dozens of km/h means shattering of the neodymium. Use safety goggles when handling with large magnets.

Table 9: Corrosion resistance
MP 5x2.7/1.2x5 C / 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 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: Electrical data (Flux)
MP 5x2.7/1.2x5 C / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	862 Mx	8.6 µWb
P_c Coefficient	0.83	High (Stable)

Total magnetic flux passing through the pole surface. Essential parameter when building generators as well as sensors. P_c value defines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 5x2.7/1.2x5 C / N38

Environment	Effective steel pull	Effect
Air (land)	0.75 kg	Standard
Water (riverbed)	0.86 kg (+0.11 kg buoyancy gain)	+14.5%

Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

In water, the magnet feels stronger thanks to Archimedes' principle. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Wall mount (shear)

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

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) severely limits the holding force.

3. Temperature resistance

*For N38 grade, the safety limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.83

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: 030201-2026

Measurement Calculator

Pulling force

Newtons (N)

lbs

Magnetic Induction

Gauss (Gs)

Induction (T)

Input a figure in a single slot to see the conversion in the other fields right away.

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MPL 40x18x10 / N38 - lamellar magnet

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The ring-shaped magnet MP 5x2.7/1.2x5 C / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. This product with a force of 0.75 kg works great as a cabinet closure, speaker holder, or spacer element in devices.

This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a flexible washer 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. Damage to the protective layer during assembly is the most common cause of rusting. If you must use it outside, paint it with anti-corrosion paint after mounting.

The inner hole diameter determines the maximum size of the mounting element. 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.

The presented product is a ring magnet with dimensions Ø5 mm (outer diameter) and height 5 mm. The key parameter here is the lifting capacity amounting to approximately 0.75 kg (force ~7.31 N). The product has a [NiCuNi] coating and is made of NdFeB material. Inner hole dimension: 2.7/1.2 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. In the case of connecting two rings, make sure one is turned the right way. We do not offer paired sets with marked poles in this category, but they are easy to match manually.

Strengths as well as weaknesses of rare earth magnets.

Benefits

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

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
They maintain their magnetic properties even under strong external field,
By applying a shiny layer of gold, the element presents an proper look,
They feature high magnetic induction at the operating surface, which improves attraction properties,
Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
In view of the ability of flexible molding and customization to unique requirements, magnetic components can be produced in a broad palette of forms and dimensions, which increases their versatility,
Significant place in electronics industry – they serve a role in computer drives, electric motors, diagnostic systems, also multitasking production systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Cons

Cons of neodymium magnets: weaknesses and usage proposals

At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
We recommend a housing - magnetic holder, due to difficulties in creating nuts inside the magnet and complex shapes.
Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these devices can be problematic in diagnostics medical after entering the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

The declared magnet strength refers to the maximum value, measured under optimal environment, specifically:

with the application of a sheet made of special test steel, ensuring full magnetic saturation
with a thickness no less than 10 mm
with an ideally smooth contact surface
under conditions of gap-free contact (metal-to-metal)
for force acting at a right angle (pull-off, not shear)
at temperature approx. 20 degrees Celsius

Key elements affecting lifting force

During everyday use, the actual lifting capacity depends on a number of factors, presented from crucial:

Distance (betwixt the magnet and the metal), as even a tiny distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate reduces the lifting capacity.

Precautions when working with NdFeB magnets

Warning for allergy sufferers

Medical facts indicate that nickel (the usual finish) is a strong allergen. If you have an allergy, prevent direct skin contact or select coated magnets.

Electronic devices

Do not bring magnets near a purse, laptop, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Do not underestimate power

Exercise caution. Rare earth magnets attract from a distance and connect with massive power, often faster than you can move away.

Phone sensors

A powerful magnetic field interferes with the operation of compasses in phones and GPS navigation. Keep magnets near a smartphone to avoid damaging the sensors.

Bone fractures

Pinching hazard: The pulling power is so immense that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Danger to the youngest

Always keep magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are life-threatening.

Pacemakers

Individuals with a heart stimulator should keep an large gap from magnets. The magnetism can stop the functioning of the implant.

Thermal limits

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its magnetic structure and pulling force.

Dust is flammable

Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Beware of splinters

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets will cause them breaking into small pieces.

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

MP 5x2.7/1.2x5 C / N38 - ring magnet

Product card - MP 5x2.7/1.2x5 C / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the assembly - data

Table 1: Static pull force (pull vs gap) - interaction chart MP 5x2.7/1.2x5 C / N38

Table 2: Sliding capacity (vertical surface) MP 5x2.7/1.2x5 C / N38

Table 3: Wall mounting (sliding) - vertical pull MP 5x2.7/1.2x5 C / N38

Table 4: Material efficiency (saturation) - sheet metal selection MP 5x2.7/1.2x5 C / N38

Table 5: Thermal stability (stability) - thermal limit MP 5x2.7/1.2x5 C / N38

Table 6: Two magnets (repulsion) - forces in the system MP 5x2.7/1.2x5 C / N38

Table 7: Safety (HSE) (implants) - warnings MP 5x2.7/1.2x5 C / N38

Table 8: Impact energy (cracking risk) - collision effects MP 5x2.7/1.2x5 C / N38

Table 9: Corrosion resistance MP 5x2.7/1.2x5 C / N38

Table 10: Electrical data (Flux) MP 5x2.7/1.2x5 C / N38

Table 11: Underwater work (magnet fishing) MP 5x2.7/1.2x5 C / N38

1. Wall mount (shear)

2. Steel thickness impact

3. Temperature resistance

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

Material specification

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

See also products

MPL 25x25x10 / N38 - lamellar magnet

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

MW 6x6 / N38 - cylindrical magnet

MPL 40x18x10 / N38 - lamellar magnet

Strengths as well as weaknesses of rare earth magnets.

Benefits

Cons

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Key elements affecting lifting force

Precautions when working with NdFeB magnets

Warning for allergy sufferers

Electronic devices

Do not underestimate power

Phone sensors

Bone fractures

Danger to the youngest

Pacemakers

Thermal limits

Dust is flammable

Beware of splinters

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MP 5x2.7/1.2x5 C / N38

Table 2: Sliding capacity (vertical surface)
MP 5x2.7/1.2x5 C / N38

Table 3: Wall mounting (sliding) - vertical pull
MP 5x2.7/1.2x5 C / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MP 5x2.7/1.2x5 C / N38

Table 5: Thermal stability (stability) - thermal limit
MP 5x2.7/1.2x5 C / N38

Table 6: Two magnets (repulsion) - forces in the system
MP 5x2.7/1.2x5 C / N38

Table 7: Safety (HSE) (implants) - warnings
MP 5x2.7/1.2x5 C / N38

Table 8: Impact energy (cracking risk) - collision effects
MP 5x2.7/1.2x5 C / N38

Table 9: Corrosion resistance
MP 5x2.7/1.2x5 C / N38

Table 10: Electrical data (Flux)
MP 5x2.7/1.2x5 C / N38

Table 11: Underwater work (magnet fishing)
MP 5x2.7/1.2x5 C / N38