Product available Ships tomorrow

MP 10x4.3x4 / 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 030178

GTIN/EAN: 5906301811954

5.00

Diameter

10 mm [±0,1 mm]

internal diameter Ø

4.3 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

1.92 g

Magnetization Direction

↑ axial

Load capacity

2.28 kg / 22.35 N

Magnetic Induction

386.91 mT / 3869 Gs

Coating

[NiCuNi] Nickel

technical parameters »

1.045 ZŁ with VAT / pcs + price for transport

0.850 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.850 ZŁ

1.045 ZŁ

price from 800 pcs

0.799 ZŁ

0.983 ZŁ

price from 3000 pcs

0.748 ZŁ

0.920 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Pick up the phone and ask +48 22 499 98 98 if you prefer get in touch by means of form the contact form page.
Weight as well as structure of a magnet can be tested with our force calculator.

Same-day processing for orders placed before 14:00.

Technical specification of the product - MP 10x4.3x4 / N38 - ring magnet

Specification / characteristics - MP 10x4.3x4 / N38 - ring magnet

properties

properties	values
Cat. no.	030178
GTIN/EAN	5906301811954
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	10 mm [±0,1 mm]
internal diameter Ø	4.3 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	1.92 g
Magnetization Direction	↑ axial
Load capacity ~ ?	2.28 kg / 22.35 N
Magnetic Induction ~ ?	386.91 mT / 3869 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 10x4.3x4 / 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 product - technical parameters

The following data represent the outcome of a engineering calculation. Values rely on algorithms for the material Nd₂Fe₁₄B. Real-world performance might slightly differ from theoretical values. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static pull force (force vs gap) - interaction chart
MP 10x4.3x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6115 Gs 611.5 mT	2.28 kg / 5.03 pounds 2280.0 g / 22.4 N	medium risk
1 mm	4915 Gs 491.5 mT	1.47 kg / 3.25 pounds 1473.3 g / 14.5 N	low risk
2 mm	3833 Gs 383.3 mT	0.90 kg / 1.97 pounds 895.7 g / 8.8 N	low risk
3 mm	2949 Gs 294.9 mT	0.53 kg / 1.17 pounds 530.3 g / 5.2 N	low risk
5 mm	1761 Gs 176.1 mT	0.19 kg / 0.42 pounds 189.1 g / 1.9 N	low risk
10 mm	612 Gs 61.2 mT	0.02 kg / 0.05 pounds 22.8 g / 0.2 N	low risk
15 mm	284 Gs 28.4 mT	0.00 kg / 0.01 pounds 4.9 g / 0.0 N	low risk
20 mm	157 Gs 15.7 mT	0.00 kg / 0.00 pounds 1.5 g / 0.0 N	low risk
30 mm	64 Gs 6.4 mT	0.00 kg / 0.00 pounds 0.3 g / 0.0 N	low risk
50 mm	19 Gs 1.9 mT	0.00 kg / 0.00 pounds 0.0 g / 0.0 N	low risk

Pulling power decreases significantly with every mm of distance. Remember that even the smallest gap (e.g., contamination, varnish, dust) significantly weakens the grip. Magnets operate most effectively at the point of direct contact; gap drastically cuts the power. Analyze how quickly the load capacity plummet, when the product does not touch flatly to the metal substrate. When calculating the arrangement, eliminate redundant distances.

Table 2: Shear hold (wall)
MP 10x4.3x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.46 kg / 1.01 pounds 456.0 g / 4.5 N
1 mm	Stal (~0.2)	0.29 kg / 0.65 pounds 294.0 g / 2.9 N
2 mm	Stal (~0.2)	0.18 kg / 0.40 pounds 180.0 g / 1.8 N
3 mm	Stal (~0.2)	0.11 kg / 0.23 pounds 106.0 g / 1.0 N
5 mm	Stal (~0.2)	0.04 kg / 0.08 pounds 38.0 g / 0.4 N
10 mm	Stal (~0.2)	0.00 kg / 0.01 pounds 4.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 pounds 0.0 g / 0.0 N

The following data defines the approximate force required to cause the slippage of the magnet down against a upright steel plate (considering standard friction). The holding force is relative to the air gap between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MP 10x4.3x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.68 kg / 1.51 pounds 684.0 g / 6.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.46 kg / 1.01 pounds 456.0 g / 4.5 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.23 kg / 0.50 pounds 228.0 g / 2.2 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	1.14 kg / 2.51 pounds 1140.0 g / 11.2 N

When mounting a holder on a upright plane (e.g., a board), it will maintain only approx. 20%-30% of its nominal power. Gravitational force and a weak degree of grip influence the fact that products slide down faster than they pop off the substrate. Designing a vertical fastening? Consider that the sliding force is much weaker than the maximum static pull force. On a smooth steel, the holder will slip down under a significantly smaller load. Utilizing a rubberized pad can drastically improve the result.

Table 4: Material efficiency (substrate influence) - power losses
MP 10x4.3x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.23 kg / 0.50 pounds 228.0 g / 2.2 N
1 mm	25%	0.57 kg / 1.26 pounds 570.0 g / 5.6 N
2 mm	50%	1.14 kg / 2.51 pounds 1140.0 g / 11.2 N
3 mm	75%	1.71 kg / 3.77 pounds 1710.0 g / 16.8 N
5 mm	100%	2.28 kg / 5.03 pounds 2280.0 g / 22.4 N
10 mm	100%	2.28 kg / 5.03 pounds 2280.0 g / 22.4 N
11 mm	100%	2.28 kg / 5.03 pounds 2280.0 g / 22.4 N
12 mm	100%	2.28 kg / 5.03 pounds 2280.0 g / 22.4 N

A too thin steel is incapable of conduct the entire magnetic field, which squanders power of the magnet. Should you mount a strong magnet to a thin surface, the flux will penetrate right through and the holding will be smaller. To achieve 100% of this magnet's power, you require a sufficiently solid backing of metal. The material oversaturation causes that on sheet metal structures (e.g., car bodies), the holder works worse. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal stability (material behavior) - thermal limit
MP 10x4.3x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	2.28 kg / 5.03 pounds 2280.0 g / 22.4 N	OK
40 °C	-2.2%	2.23 kg / 4.92 pounds 2229.8 g / 21.9 N	OK
60 °C	-4.4%	2.18 kg / 4.81 pounds 2179.7 g / 21.4 N	OK
80 °C	-6.6%	2.13 kg / 4.69 pounds 2129.5 g / 20.9 N
100 °C	-28.8%	1.62 kg / 3.58 pounds 1623.4 g / 15.9 N

Classic neodymiums lose power above the temperature limit. Watch out for overheating – excessive heat can irreversibly demagnetize this magnet. With increasing heat, the magnet's power briefly lowers. Refrain from using this product near heat sources exceeding its operating temperature limit. Too high temperature will cause destruction of magnetism.

*Technical advisory: Temperature resistance depends not only on the material grade, as well as the dimension ratios. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Two magnets (attraction) - forces in the system
MP 10x4.3x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	12.93 kg / 28.50 pounds 6 169 Gs	1.94 kg / 4.27 pounds 1939 g / 19.0 N	N/A
1 mm	10.50 kg / 23.16 pounds 11 025 Gs	1.58 kg / 3.47 pounds 1576 g / 15.5 N	9.45 kg / 20.84 pounds ~0 Gs
2 mm	8.35 kg / 18.41 pounds 9 831 Gs	1.25 kg / 2.76 pounds 1253 g / 12.3 N	7.52 kg / 16.57 pounds ~0 Gs
3 mm	6.55 kg / 14.43 pounds 8 703 Gs	0.98 kg / 2.17 pounds 982 g / 9.6 N	5.89 kg / 12.99 pounds ~0 Gs
5 mm	3.91 kg / 8.63 pounds 6 729 Gs	0.59 kg / 1.29 pounds 587 g / 5.8 N	3.52 kg / 7.76 pounds ~0 Gs
10 mm	1.07 kg / 2.36 pounds 3 522 Gs	0.16 kg / 0.35 pounds 161 g / 1.6 N	0.96 kg / 2.13 pounds ~0 Gs
20 mm	0.13 kg / 0.29 pounds 1 223 Gs	0.02 kg / 0.04 pounds 19 g / 0.2 N	0.12 kg / 0.26 pounds ~0 Gs
50 mm	0.00 kg / 0.01 pounds 194 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
60 mm	0.00 kg / 0.00 pounds 129 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
70 mm	0.00 kg / 0.00 pounds 91 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
80 mm	0.00 kg / 0.00 pounds 66 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
90 mm	0.00 kg / 0.00 pounds 50 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs
100 mm	0.00 kg / 0.00 pounds 39 Gs	0.00 kg / 0.00 pounds 0 g / 0.0 N	0.00 kg / 0.00 pounds ~0 Gs

Two magnetic products attract each other from a significantly greater distance than a magnet and steel combination. Such a system of two magnets creates a more powerful interaction and a further horizon of action. Planning to create a powerful holder? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the pinch force is huge. The levitation is slightly lower than the attraction, but still significant.
*Flux density between like poles is approximately ~0 Gs in the exact middle of the gap (caused by magnetic field nullification).
Important: Results refer to sliding force of two matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 10x4.3x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	9.0 cm
Hearing aid	10 Gs (1.0 mT)	7.0 cm
Mechanical watch	20 Gs (2.0 mT)	5.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	4.0 cm
Remote	50 Gs (5.0 mT)	3.5 cm
Payment card	400 Gs (40.0 mT)	1.5 cm
HDD hard drive	600 Gs (60.0 mT)	1.5 cm

Powerful magnet radiation is a real danger to electronic devices as well as pacemakers. These magnets produce a field that disrupts operation of sensitive medical devices. Remember: the unseen radiation passes through tissues and plastic. Special caution must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: automatic timepieces, remotes, speakers, and screens. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Impact energy (cracking risk) - collision effects
MP 10x4.3x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	34.97 km/h (9.71 m/s)	0.09 J
30 mm	60.20 km/h (16.72 m/s)	0.27 J
50 mm	77.71 km/h (21.59 m/s)	0.45 J
100 mm	109.90 km/h (30.53 m/s)	0.89 J

Neodymium magnets are prone to chipping – a collision with steel can result in shattering. Watch the impact speed – a magnet released freely becomes dangerous. Kinetic force can trigger coating fragments or painful pinches to fingers. Hold the magnet firmly during mounting so it doesn't hit with great force against the metal. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when working with powerful specimens.

Table 9: Coating parameters (durability)
MP 10x4.3x4 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MP 10x4.3x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	4 017 Mx	40.2 µWb
P_c Coefficient	1.44	High (Stable)

Total magnetic flux emitted by the pole surface. Key data when building generators and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MP 10x4.3x4 / N38

Environment	Effective steel pull	Effect
Air (land)	2.28 kg	Standard
Water (riverbed)	2.61 kg (+0.33 kg buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Shear force

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

2. Plate thickness effect

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

3. Power loss vs temp

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.44

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 specification and ecology

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%

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: 030178-2026

Magnet Unit Converter

Magnet pull force

Force in kg

Newtons (N)

lbs

Magnetic Field

Induction (Gs)

Put a figure in just one slot to see the conversion in all other units at once.

See more deals

Product available Ships tomorrow

MW 15x8 / N38 - cylindrical magnet

4.92 ZŁ brutto / pcs

Product available Ships tomorrow

MPL 35x7x3 / N38 - lamellar magnet

2.99 ZŁ brutto / pcs

Product available Ships tomorrow

UMT 12x20 black / N38 - board holder

1.894 ZŁ brutto / pcs

Product available Ships tomorrow

LM TLN - 22 SQ / N38 - magnetic leviton

523.00 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. 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 2.28 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. 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.

Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. Damage to the protective layer during assembly is the most common cause of rusting. This product is dedicated for inside building use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 4.3 mm fits this model. If the magnet does not have a chamfer (cone), we recommend using a screw with a flat or cylindrical head, or possibly using a washer. Always check that the screw head is not larger than the outer diameter of the magnet (10 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø10 mm (outer diameter) and height 4 mm. The key parameter here is the lifting capacity amounting to approximately 2.28 kg (force ~22.35 N). The mounting hole diameter is precisely 4.3 mm.

The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Strengths and weaknesses of rare earth magnets.

Pros

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

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
Neodymium magnets are characterized by remarkably resistant to magnetic field loss caused by external field sources,
In other words, due to the shiny surface of nickel, the element gains a professional look,
They are known for high magnetic induction at the operating surface, which improves attraction properties,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
In view of the possibility of free molding and customization to custom requirements, NdFeB magnets can be modeled in a broad palette of shapes and sizes, which amplifies use scope,
Huge importance in modern technologies – they serve a role in magnetic memories, electric drive systems, precision medical tools, as well as industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of neodymium magnets:

At strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
When exposed to high temperature, neodymium magnets suffer a drop in power. 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
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
Limited possibility of creating nuts in the magnet and complex forms - recommended is a housing - magnet mounting.
Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these products can complicate diagnosis medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

The force parameter is a measurement result executed under specific, ideal conditions:

using a base made of low-carbon steel, acting as a magnetic yoke
with a thickness of at least 10 mm
with an polished contact surface
without the slightest insulating layer between the magnet and steel
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Determinants of lifting force in real conditions

Bear in mind that the working load may be lower subject to the following factors, starting with the most relevant:

Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
Load vector – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted to the other side.
Material composition – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
Plate texture – ground elements ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
Thermal factor – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

H&S for magnets

This is not a toy

Always keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are very dangerous.

Handling rules

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

Shattering risk

Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.

Hand protection

Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Protect data

Powerful magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

Phone sensors

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

Dust explosion hazard

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

Maximum temperature

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. The loss of strength is permanent.

Medical implants

People with a ICD have to maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the life-saving device.

Nickel allergy

Medical facts indicate that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, avoid direct skin contact or opt for versions in plastic housing.

Attention! Details about risks in the article: Safety of working with magnets.

MP 10x4.3x4 / N38 - ring magnet

Technical specification of the product - MP 10x4.3x4 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the product - technical parameters

Table 1: Static pull force (force vs gap) - interaction chart MP 10x4.3x4 / N38

Table 2: Shear hold (wall) MP 10x4.3x4 / N38

Table 3: Wall mounting (shearing) - vertical pull MP 10x4.3x4 / N38

Table 4: Material efficiency (substrate influence) - power losses MP 10x4.3x4 / N38

Table 5: Thermal stability (material behavior) - thermal limit MP 10x4.3x4 / N38

Table 6: Two magnets (attraction) - forces in the system MP 10x4.3x4 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MP 10x4.3x4 / N38

Table 8: Impact energy (cracking risk) - collision effects MP 10x4.3x4 / N38

Table 9: Coating parameters (durability) MP 10x4.3x4 / N38

Table 10: Construction data (Pc) MP 10x4.3x4 / N38

Table 11: Physics of underwater searching MP 10x4.3x4 / N38

1. Shear force

2. Plate thickness effect

3. Power loss vs temp

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

Chemical composition

Environmental data

Magnet pull force

Magnetic Field

See more deals

MW 15x8 / N38 - cylindrical magnet

MPL 35x7x3 / N38 - lamellar magnet

UMT 12x20 black / N38 - board holder

LM TLN - 22 SQ / N38 - magnetic leviton

Strengths and weaknesses of rare earth magnets.

Pros

Weaknesses

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Determinants of lifting force in real conditions

H&S for magnets

This is not a toy

Handling rules

Shattering risk

Hand protection

Protect data

Phone sensors

Dust explosion hazard

Maximum temperature

Medical implants

Nickel allergy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MP 10x4.3x4 / N38

Table 2: Shear hold (wall)
MP 10x4.3x4 / N38

Table 3: Wall mounting (shearing) - vertical pull
MP 10x4.3x4 / N38

Table 4: Material efficiency (substrate influence) - power losses
MP 10x4.3x4 / N38

Table 5: Thermal stability (material behavior) - thermal limit
MP 10x4.3x4 / N38

Table 6: Two magnets (attraction) - forces in the system
MP 10x4.3x4 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MP 10x4.3x4 / N38

Table 8: Impact energy (cracking risk) - collision effects
MP 10x4.3x4 / N38

Table 9: Coating parameters (durability)
MP 10x4.3x4 / N38

Table 10: Construction data (P_c)
MP 10x4.3x4 / N38

Table 11: Physics of underwater searching
MP 10x4.3x4 / N38