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MP 62x42x25 / N38 - ring magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, mazowieckie, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500 PLN

ring magnet

Catalog no 030205

GTIN/EAN: 5906301812227

5.00

Load capacity 58.67 kg / 575.60 N Magnetic Induction 389.14 mT / 3891 Gs

Diameter: 62 mm [±0,1 mm]
internal diameter Ø: 42 mm [±0,1 mm]
Height: 25 mm [±0,1 mm]
Weight: 306.31 g
Magnetization Direction: ↑ axial
Coating: [NiCuNi] Nickel

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Lifting power as well as shape of a neodymium magnet can be checked on our power calculator.

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Physical properties - MP 62x42x25 / N38 - ring magnet

Specification / characteristics - MP 62x42x25 / N38 - ring magnet

properties

properties	values
Cat. no.	030205
GTIN/EAN	5906301812227
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	62 mm [±0,1 mm]
internal diameter Ø	42 mm [±0,1 mm]
Height	25 mm [±0,1 mm]
Weight	306.31 g
Magnetization Direction	↑ axial
Load capacity ~ ?	58.67 kg / 575.60 N
Magnetic Induction ~ ?	389.14 mT / 3891 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 62x42x25 / 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 magnet - technical parameters

The following information represent the result of a physical analysis. Results are based on algorithms for the material Nd₂Fe₁₄B. Real-world performance might slightly differ. Use these data as a supplementary guide when designing systems.

Table 1: Static pull force (pull vs gap) - interaction chart
MP 62x42x25 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4472 Gs 447.2 mT	58.67 kg / 129.35 lbs 58670.0 g / 575.6 N	crushing
1 mm	4338 Gs 433.8 mT	55.21 kg / 121.72 lbs 55213.2 g / 541.6 N	crushing
2 mm	4201 Gs 420.1 mT	51.77 kg / 114.13 lbs 51768.5 g / 507.8 N	crushing
3 mm	4061 Gs 406.1 mT	48.39 kg / 106.69 lbs 48394.9 g / 474.8 N	crushing
5 mm	3781 Gs 378.1 mT	41.94 kg / 92.47 lbs 41942.4 g / 411.5 N	crushing
10 mm	3097 Gs 309.7 mT	28.15 kg / 62.06 lbs 28148.0 g / 276.1 N	crushing
15 mm	2485 Gs 248.5 mT	18.12 kg / 39.94 lbs 18118.5 g / 177.7 N	crushing
20 mm	1972 Gs 197.2 mT	11.41 kg / 25.16 lbs 11412.7 g / 112.0 N	crushing
30 mm	1239 Gs 123.9 mT	4.51 kg / 9.93 lbs 4505.2 g / 44.2 N	warning
50 mm	533 Gs 53.3 mT	0.83 kg / 1.84 lbs 832.4 g / 8.2 N	safe

Grip strength decreases sharply with every mm of distance. Note that even a very thin break (e.g., contamination, paint, veneer) noticeably diminishes the holding power. Neodymiums operate optimally at the point of direct contact; distance weakens the force. See how flashily the load capacity plummet, when the product does not touch flatly to the metal substrate. When calculating the arrangement, avoid additional spacers.

Table 2: Slippage hold (wall)
MP 62x42x25 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	11.73 kg / 25.87 lbs 11734.0 g / 115.1 N
1 mm	Stal (~0.2)	11.04 kg / 24.34 lbs 11042.0 g / 108.3 N
2 mm	Stal (~0.2)	10.35 kg / 22.83 lbs 10354.0 g / 101.6 N
3 mm	Stal (~0.2)	9.68 kg / 21.34 lbs 9678.0 g / 94.9 N
5 mm	Stal (~0.2)	8.39 kg / 18.49 lbs 8388.0 g / 82.3 N
10 mm	Stal (~0.2)	5.63 kg / 12.41 lbs 5630.0 g / 55.2 N
15 mm	Stal (~0.2)	3.62 kg / 7.99 lbs 3624.0 g / 35.6 N
20 mm	Stal (~0.2)	2.28 kg / 5.03 lbs 2282.0 g / 22.4 N
30 mm	Stal (~0.2)	0.90 kg / 1.99 lbs 902.0 g / 8.8 N
50 mm	Stal (~0.2)	0.17 kg / 0.37 lbs 166.0 g / 1.6 N

The following data indicates the estimated weight limit needed to cause the sliding of the magnet down along a upright metal surface (considering standard friction coefficient). This parameter is a function of the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MP 62x42x25 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	17.60 kg / 38.80 lbs 17601.0 g / 172.7 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	11.73 kg / 25.87 lbs 11734.0 g / 115.1 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	5.87 kg / 12.93 lbs 5867.0 g / 57.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	29.34 kg / 64.67 lbs 29335.0 g / 287.8 N

When placing a holder on a vertical surface (e.g., a car body), it will maintain barely about 20%-30% of its nominal power. Gravitational force and a weak degree of grip cause that holders slip faster than they detach. Want to create a hanger? Remember that the shear force is significantly lower than the perpendicular breakaway force. On a smooth steel, the holder will give way down under a noticeably lighter weight. Application of an anti-slip pad can effectively raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MP 62x42x25 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	1.96 kg / 4.31 lbs 1955.7 g / 19.2 N
1 mm	8%	4.89 kg / 10.78 lbs 4889.2 g / 48.0 N
2 mm	17%	9.78 kg / 21.56 lbs 9778.3 g / 95.9 N
3 mm	25%	14.67 kg / 32.34 lbs 14667.5 g / 143.9 N
5 mm	42%	24.45 kg / 53.89 lbs 24445.8 g / 239.8 N
10 mm	83%	48.89 kg / 107.79 lbs 48891.7 g / 479.6 N
11 mm	92%	53.78 kg / 118.57 lbs 53780.8 g / 527.6 N
12 mm	100%	58.67 kg / 129.35 lbs 58670.0 g / 575.6 N

A thin sheet is unable to absorb the full magnetic flux, which weakens actual performance of the holder. Should you attach a powerful product to a too thin substrate, the flux will pass right through and the holding will be smaller. To squeeze full efficiency of this magnet's power, you require a sufficiently solid piece of steel. The saturation effect means that on sheet metal structures (e.g., appliance housings), the magnet shows lower pull force. We suggest choosing the steel cross-section according to the table below.

Table 5: Thermal resistance (stability) - power drop
MP 62x42x25 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	58.67 kg / 129.35 lbs 58670.0 g / 575.6 N	OK
40 °C	-2.2%	57.38 kg / 126.50 lbs 57379.3 g / 562.9 N	OK
60 °C	-4.4%	56.09 kg / 123.65 lbs 56088.5 g / 550.2 N	OK
80 °C	-6.6%	54.80 kg / 120.81 lbs 54797.8 g / 537.6 N
100 °C	-28.8%	41.77 kg / 92.09 lbs 41773.0 g / 409.8 N

Standard neodymium magnets lose strength past the thermal threshold. Avoid high temperatures – excessive heat can irreversibly demagnetize this magnet. With every degree above norm, the magnet's power momentarily lowers. Do not use this magnet near heat sources exceeding its safe range. Too high temperature will result in irreversible degradation of magnetic properties.

*Engineering note: Heat tolerance is determined by both grade, and the Permeance Coefficient Pc. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than long magnets. Red status in the table signals a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 62x42x25 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	264.93 kg / 584.07 lbs 5 588 Gs	39.74 kg / 87.61 lbs 39740 g / 389.8 N	N/A
1 mm	257.19 kg / 567.00 lbs 8 812 Gs	38.58 kg / 85.05 lbs 38578 g / 378.4 N	231.47 kg / 510.30 lbs ~0 Gs
2 mm	249.32 kg / 549.66 lbs 8 676 Gs	37.40 kg / 82.45 lbs 37398 g / 366.9 N	224.39 kg / 494.69 lbs ~0 Gs
3 mm	241.51 kg / 532.44 lbs 8 539 Gs	36.23 kg / 79.87 lbs 36227 g / 355.4 N	217.36 kg / 479.19 lbs ~0 Gs
5 mm	226.10 kg / 498.47 lbs 8 262 Gs	33.92 kg / 74.77 lbs 33915 g / 332.7 N	203.49 kg / 448.62 lbs ~0 Gs
10 mm	189.40 kg / 417.55 lbs 7 562 Gs	28.41 kg / 62.63 lbs 28409 g / 278.7 N	170.46 kg / 375.79 lbs ~0 Gs
20 mm	127.11 kg / 280.22 lbs 6 195 Gs	19.07 kg / 42.03 lbs 19066 g / 187.0 N	114.40 kg / 252.20 lbs ~0 Gs
50 mm	32.28 kg / 71.17 lbs 3 122 Gs	4.84 kg / 10.68 lbs 4843 g / 47.5 N	29.06 kg / 64.06 lbs ~0 Gs
60 mm	20.34 kg / 44.85 lbs 2 478 Gs	3.05 kg / 6.73 lbs 3052 g / 29.9 N	18.31 kg / 40.36 lbs ~0 Gs
70 mm	12.99 kg / 28.63 lbs 1 980 Gs	1.95 kg / 4.29 lbs 1948 g / 19.1 N	11.69 kg / 25.77 lbs ~0 Gs
80 mm	8.43 kg / 18.59 lbs 1 595 Gs	1.26 kg / 2.79 lbs 1265 g / 12.4 N	7.59 kg / 16.73 lbs ~0 Gs
90 mm	5.58 kg / 12.29 lbs 1 298 Gs	0.84 kg / 1.84 lbs 836 g / 8.2 N	5.02 kg / 11.06 lbs ~0 Gs
100 mm	3.76 kg / 8.29 lbs 1 065 Gs	0.56 kg / 1.24 lbs 564 g / 5.5 N	3.38 kg / 7.46 lbs ~0 Gs

Two magnetic products interact from a significantly greater distance than a neodymium and metal combination. The connection of two magnets generates a stronger field and a further horizon of action. Planning to create a powerful holder? Use a pair of magnets instead of one magnet and a steel. Exercise caution that when connecting a pair of magnets, the impact force is huge. The repulsion force is slightly lower than the connection force, but still impressive.
*Flux density for N-N configuration drops to ~0 Gs in the exact middle between the magnets (resulting from vector opposition).
Important: Estimates show friction force of two matching neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (implants) - warnings
MP 62x42x25 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	32.5 cm
Hearing aid	10 Gs (1.0 mT)	25.5 cm
Mechanical watch	20 Gs (2.0 mT)	20.0 cm
Mobile device	40 Gs (4.0 mT)	15.5 cm
Remote	50 Gs (5.0 mT)	14.0 cm
Payment card	400 Gs (40.0 mT)	6.0 cm
HDD hard drive	600 Gs (60.0 mT)	5.0 cm

Extremely neodym field poses a real danger to IT equipment as well as medical implants. These magnets produce a field that destroys function of sensitive medical devices. Be aware: the unseen radiation acts through matter and glass. Increased vigilance must be taken by people with hearing aids and insulin pumps. Also at risk are: automatic timepieces, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (kinetic energy) - collision effects
MP 62x42x25 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.77 km/h (5.21 m/s)	4.16 J
30 mm	23.85 km/h (6.63 m/s)	6.72 J
50 mm	24.58 km/h (6.83 m/s)	7.14 J
100 mm	24.78 km/h (6.88 m/s)	7.26 J

NdFeB products are prone to chipping – a violent impact against metal causes immediate chipping. Watch the impact speed – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or dangerous crushing to fingers. Always hold the magnet during installation so it doesn't hit violently against the metal. A collision at high speed ends with a crack of the neodymium. Wear safety glasses when handling with powerful specimens.

Table 9: Corrosion resistance
MP 62x42x25 / 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: Construction data (Flux)
MP 62x42x25 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	100 906 Mx	1009.1 µWb
P_c Coefficient	0.64	High (Stable)

Total magnetic flux emitted by the pole surface. Key data for generator designers as well as sensors. The P_c coefficient determines the working geometry.

Table 11: Underwater work (magnet fishing)
MP 62x42x25 / N38

Environment	Effective steel pull	Effect
Air (land)	58.67 kg	Standard
Water (riverbed)	67.18 kg (+8.51 kg buoyancy gain)	+14.5%

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

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

1. Sliding resistance

*Caution: On a vertical surface, the magnet retains only a fraction of its max power.

2. Plate thickness effect

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

3. Heat tolerance

*For N38 grade, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.64

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: 030205-2026

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The ring magnet with a hole MP 62x42x25 / N38 is created for permanent mounting, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables easy screwing to wood, wall, plastic, or metal. 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 62x42x25 / N38. Neodymium magnets are sintered ceramics, which means they are hard but breakable and inelastic. One turn too many can destroy the magnet, so do it slowly. The flat screw head should evenly press the magnet. 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. In the place of the mounting hole, the coating is thinner and easily scratched when tightening the screw, which will become a corrosion focus. This product is dedicated for indoor use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.

A screw or bolt with a thread diameter smaller than 42 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 (62 mm), so it doesn't protrude beyond the outline.

The presented product is a ring magnet with dimensions Ø62 mm (outer diameter) and height 25 mm. The key parameter here is the lifting capacity amounting to approximately 58.67 kg (force ~575.60 N). The mounting hole diameter is precisely 42 mm.

These magnets are magnetized axially (through the thickness), which means one flat side is the N pole and the other is S. 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 as well as weaknesses of Nd₂Fe₁₄B magnets.

Advantages

Apart from their superior holding force, neodymium magnets have these key benefits:

Their strength is durable, and after around ten years it decreases only by ~1% (theoretically),
They retain their magnetic properties even under external field action,
A magnet with a shiny silver surface has an effective appearance,
Magnets have exceptionally strong magnetic induction on the surface,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
Due to the possibility of free shaping and customization to specialized projects, NdFeB magnets can be manufactured in a variety of geometric configurations, which makes them more universal,
Significant place in electronics industry – they are used in mass storage devices, brushless drives, advanced medical instruments, as well as multitasking production systems.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Drawbacks and weaknesses of neodymium magnets: tips and applications.

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
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
We suggest casing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
Health risk resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these products are able to be problematic in diagnostics medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum magnetic pulling force – what it depends on?

Magnet power was determined for the most favorable conditions, assuming:

with the contact of a sheet made of special test steel, ensuring full magnetic saturation
with a thickness minimum 10 mm
with an polished contact surface
with direct contact (no coatings)
under perpendicular application of breakaway force (90-degree angle)
at standard ambient temperature

Lifting capacity in real conditions – factors

It is worth knowing that the application force may be lower depending on elements below, starting with the most relevant:

Distance (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Metal type – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.

Warnings

Magnetic interference

GPS units and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Danger to pacemakers

Medical warning: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Crushing risk

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

Fragile material

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.

Electronic hazard

Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, mechanical watches).

Handling rules

Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.

Combustion hazard

Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.

Power loss in heat

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.

Keep away from children

Adult use only. Small elements can be swallowed, causing intestinal necrosis. Store out of reach of children and animals.

Nickel coating and allergies

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease working with magnets and wear gloves.

Important! Learn more about risks in the article: Magnet Safety Guide.

MP 62x42x25 / N38 - ring magnet

Physical properties - MP 62x42x25 / N38 - ring magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical simulation of the magnet - technical parameters

Table 1: Static pull force (pull vs gap) - interaction chart MP 62x42x25 / N38

Table 2: Slippage hold (wall) MP 62x42x25 / N38

Table 3: Vertical assembly (sliding) - vertical pull MP 62x42x25 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MP 62x42x25 / N38

Table 5: Thermal resistance (stability) - power drop MP 62x42x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system MP 62x42x25 / N38

Table 7: Safety (HSE) (implants) - warnings MP 62x42x25 / N38

Table 8: Dynamics (kinetic energy) - collision effects MP 62x42x25 / N38

Table 9: Corrosion resistance MP 62x42x25 / N38

Table 10: Construction data (Flux) MP 62x42x25 / N38

Table 11: Underwater work (magnet fishing) MP 62x42x25 / N38

1. Sliding resistance

2. Plate thickness effect

3. Heat tolerance

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

Chemical composition

Environmental data

Pulling force

Magnetic Induction

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MPL 10x10x10 / N38 - lamellar magnet

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

MW 22x6 / N38 - cylindrical magnet

MW 15x8 / N38 - cylindrical magnet

Strengths as well as weaknesses of Nd2Fe14B magnets.

Advantages

Disadvantages

Holding force characteristics

Maximum magnetic pulling force – what it depends on?

Lifting capacity in real conditions – factors

Warnings

Magnetic interference

Danger to pacemakers

Crushing risk

Fragile material

Electronic hazard

Handling rules

Combustion hazard

Power loss in heat

Keep away from children

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - interaction chart
MP 62x42x25 / N38

Table 2: Slippage hold (wall)
MP 62x42x25 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MP 62x42x25 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MP 62x42x25 / N38

Table 5: Thermal resistance (stability) - power drop
MP 62x42x25 / N38

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MP 62x42x25 / N38

Table 7: Safety (HSE) (implants) - warnings
MP 62x42x25 / N38

Table 8: Dynamics (kinetic energy) - collision effects
MP 62x42x25 / N38

Table 9: Corrosion resistance
MP 62x42x25 / N38

Table 10: Construction data (Flux)
MP 62x42x25 / N38

Table 11: Underwater work (magnet fishing)
MP 62x42x25 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.