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UI 33x13x4 [C311] / N38 - badge holder

badge holder

Catalog no 150207

GTIN/EAN: 5906301813545

5.00
Load capacity 1.80 kg / 17.65 N
length
33 mm [±1 mm]
Width
13 mm [±1 mm]
Height
4 mm [±1 mm]
Weight
0.21 g

How we measure these parameters — certificates and measurements

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1.950 zł net / pcs

2.40 zł with VAT (23% VAT) / pcs

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Frequently asked questions

How much will a magnetic holder hold in practice?
The catalogue value assumes full contact with smooth steel at least 10 mm thick and a perpendicular pull. Thinner sheet, paint, rust and surface irregularities reduce it considerably: on 1 mm sheet about half remains. Lifting and vertical mounting call for an additional safety margin.
Will a holder work on stainless steel?
Not on austenitic grades 304 and 316 — they are effectively non-magnetic. It will not work on aluminium, copper or brass either. Those materials need a mechanical gripper.
Which coating for which conditions?
Nickel-copper-nickel (NiCuNi) is the standard and covers most applications. Epoxy is used for damp environments and outdoor work, zinc is sufficient for dry interiors. Holders in a steel housing or in rubber also protect the magnet against impact.

Guides from the knowledge base

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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Physical properties - UI 33x13x4 [C311] / N38 - badge holder

Specification / characteristics - UI 33x13x4 [C311] / N38 - badge holder

properties
properties values
Cat. no. 150207
GTIN/EAN 5906301813545
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 33 mm [±1 mm]
Width 13 mm [±1 mm]
Height 4 mm [±1 mm]
Weight 0.21 g
Load capacity ~ ? 1.80 kg / 17.65 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UI 33x13x4 [C311] / N38 - badge holder
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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 310 °C
Curie Temperature TF 590 °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
Engineering data and GPSR

Elemental analysis

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: 150207-2026
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Pros and cons of Nd2Fe14B magnets.

Strengths

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:
  • They have constant strength, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
  • They maintain their magnetic properties even under strong external field,
  • A magnet with a metallic nickel surface has better aesthetics,
  • They show high magnetic induction at the operating surface, which increases their power,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Possibility of detailed forming as well as optimizing to individual needs,
  • Huge importance in future technologies – they are commonly used in computer drives, electric motors, advanced medical instruments, and industrial machines.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Weaknesses

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium 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 very resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing threads and complicated shapes in magnets, we propose using a housing - magnetic mount.
  • Potential hazard to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child safety. Additionally, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

The lifting capacity listed is a measurement result executed under the following configuration:
  • on a plate made of structural steel, effectively closing the magnetic flux
  • with a thickness of at least 10 mm
  • with an polished contact surface
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction vertical to the plane
  • in stable room temperature

Determinants of lifting force in real conditions

It is worth knowing that the application force may be lower influenced by the following factors, starting with the most relevant:
  • Air gap (betwixt the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Plate thickness – too thin steel causes magnetic saturation, causing part of the power to be escaped into the air.
  • Material composition – not every steel reacts the same. High carbon content worsen the interaction with the magnet.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet’s surface and the plate reduces the load capacity.

Safe handling of NdFeB magnets
ICD Warning

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

Maximum temperature

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Threat to navigation

An intense magnetic field interferes with the functioning of magnetometers in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Allergic reactions

Medical facts indicate that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or choose versions in plastic housing.

Fragile material

Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.

Combustion hazard

Powder generated during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Protect data

Do not bring magnets close to a purse, laptop, or TV. The magnetic field can permanently damage these devices and wipe information from cards.

Do not underestimate power

Exercise caution. Neodymium magnets attract from a long distance and connect with huge force, often quicker than you can react.

Choking Hazard

These products are not suitable for play. Swallowing several magnets can lead to them pinching intestinal walls, which constitutes a critical condition and necessitates immediate surgery.

Bone fractures

Big blocks can break fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

Danger! Learn more about risks in the article: Safety of working with magnets.