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UMT 12x20 red / N38 - board holder

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

board holder

Catalog no 230278

GTIN/EAN: 5906301814306

5.00

Diameter Ø

12 mm [±1 mm]

Height

20 mm [±1 mm]

Weight

3.5 g

Coating

[NiCuNi] Nickel

1.894 ZŁ with VAT / pcs + price for transport

1.540 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Call us +48 22 499 98 98 or contact us using request form the contact section.
Weight along with form of a magnet can be analyzed on our magnetic calculator.

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UMT 12x20 red / N38 - board holder

Specification / characteristics UMT 12x20 red / N38 - board holder

properties

properties	values
Cat. no.	230278
GTIN/EAN	5906301814306
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	12 mm [±1 mm]
Height	20 mm [±1 mm]
Weight	3.5 g
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMT 12x20 red / N38 - board holder

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

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%

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: 230278-2025

Measurement Calculator

Pulling force

Kilograms (kg)

Force in lbs

Magnetic Field

Induction (Gs)

Induction (T)

Enter data into any field, and all other values will update in real-time.

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Magnetic pins stand out with an ergonomic shape that facilitates gripping and moving them. Inside the plastic housing is a very strong neodymium magnet, not weak ferrite. They are aesthetic, colorful, and do not scratch the board surface thanks to a smooth base.

Despite inconspicuous size, one pin with a neodymium magnet can hold even 15-20 A4 paper sheets. They guarantee that your notes and important information will stay in place.

They work well as markers on maps, scoreboards, planners, or Kanban systems. They are safe to use thanks to the plastic housing, which has no sharp edges. Check the description if this model is dedicated to glass boards (weak magnets do not work through glass).

Although the magnet is tightly sealed in a plastic housing, the product is small and poses a swallowing risk. For older children, they are a great scientific aid for physics experiments.

We offer a wide color range: red, blue, green, yellow, white, black, and many others. Check purchasing options (pieces or blisters) in the product details above.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their high retention, neodymium magnets are valued for these benefits:

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
Neodymium magnets are characterized by extremely resistant to magnetic field loss caused by external field sources,
By covering with a smooth coating of nickel, the element acquires an professional look,
They feature high magnetic induction at the operating surface, making them more effective,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Possibility of precise modeling and adapting to specific requirements,
Significant place in advanced technology sectors – they serve a role in data components, motor assemblies, medical devices, and modern systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of NdFeB magnets:

At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
NdFeB magnets lose power 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 extremely resistant to heat
Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
We suggest cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated shapes.
Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, small components of these products are able to complicate diagnosis medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting capacity of the magnet – what contributes to it?

The declared magnet strength refers to the maximum value, obtained under ideal test conditions, namely:

on a plate made of structural steel, perfectly concentrating the magnetic field
whose transverse dimension is min. 10 mm
characterized by lack of roughness
under conditions of gap-free contact (surface-to-surface)
for force acting at a right angle (in the magnet axis)
at standard ambient temperature

Key elements affecting lifting force

Please note that the application force may be lower depending on elements below, starting with the most relevant:

Distance (betwixt the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to paint, rust or dirt).
Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Steel grade – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was determined by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Adults only

NdFeB magnets are not toys. Accidental ingestion of several magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires urgent medical intervention.

Health Danger

Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Allergy Warning

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness appears, cease handling magnets and use protective gear.

Crushing force

Mind your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Be careful!

Keep away from electronics

Remember: neodymium magnets generate a field that confuses precision electronics. Keep a separation from your phone, tablet, and navigation systems.

Maximum temperature

Monitor thermal conditions. Heating the magnet to high heat will ruin its magnetic structure and pulling force.

Protect data

Do not bring magnets near a wallet, computer, or TV. The magnetism can destroy these devices and wipe information from cards.

Safe operation

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

Beware of splinters

Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Mechanical processing

Powder produced during grinding of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Warning! Need more info? Read our article: Why are neodymium magnets dangerous?

UMT 12x20 red / N38 - board holder

Want to negotiate?

UMT 12x20 red / N38 - board holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Environmental data

Pulling force

Magnetic Field

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MPL 10x10x3 / N38 - lamellar magnet

Strengths as well as weaknesses of neodymium magnets.

Benefits

Cons

Holding force characteristics

Maximum lifting capacity of the magnet – what contributes to it?

Key elements affecting lifting force

Adults only

Health Danger

Allergy Warning

Crushing force

Keep away from electronics

Maximum temperature

Protect data

Safe operation

Beware of splinters

Mechanical processing

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C