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UI 33x13x4 [C311] / N38 - badge holder

badge holder

Catalog no 150207

GTIN/EAN: 5906301813545

5.00

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

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2.40 ZŁ with VAT / pcs + price for transport

1.950 ZŁ net + 23% VAT / pcs

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Want to talk magnets?

Pick up the phone and ask +48 22 499 98 98 otherwise let us know via form the contact page.
Lifting power and structure of a neodymium magnet can be analyzed with our magnetic calculator.

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Technical - 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
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

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 specification and ecology
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: 150207-2026
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Magnet pull force
Field Strength
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The magnetic holder is safe for delicate fabrics, expensive suits, silk, and shirts. The badge holds stably, does not tilt or hang, which improves employee image. It's a standard solution at conferences, trade fairs, and in companies caring about image.
The set consists of two elements: the magnetic part (back) and the mounting plate (front). The outer part has strong 3M foam tape, to which a business card or plastic case is stuck. The plastic magnet housing is pleasant to the touch, smooth, and safe for the user.
Yes, the neodymium magnets used are very strong and hold even through thick materials. Model UI 33x13x4 [C311] / N38 ensures optimal grip without the risk of losing the badge in motion.
For people with a pacemaker, we recommend traditional fasteners on a lanyard, clip, or safe pin. The magnetic field is point-based, short-range, and does not negatively affect a healthy person's body.
We have large warehouse stocks in Poland, allowing for fast fulfillment of orders for companies (even thousands of pieces). You can order samples to check the quality before a larger purchase.

Pros as well as cons of rare earth magnets.

Pros

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • Their magnetic field is maintained, and after approximately ten years it decreases only by ~1% (theoretically),
  • Neodymium magnets are exceptionally resistant to demagnetization caused by external interference,
  • By applying a lustrous layer of silver, the element has an aesthetic look,
  • Magnetic induction on the surface of the magnet is maximum,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Due to the option of precise molding and customization to custom needs, NdFeB magnets can be manufactured in a wide range of shapes and sizes, which expands the range of possible applications,
  • Universal use in modern technologies – they are used in HDD drives, brushless drives, medical equipment, also other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in miniature devices

Weaknesses

What to avoid - cons of neodymium magnets and proposals for their use:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • Limited ability of making threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
  • Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these magnets can complicate diagnosis medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Detachment force of the magnet in optimal conditions – what contributes to it?

Magnet power was determined for the most favorable conditions, taking into account:
  • with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
  • with a cross-section no less than 10 mm
  • characterized by smoothness
  • with total lack of distance (without coatings)
  • under perpendicular force vector (90-degree angle)
  • in temp. approx. 20°C

Determinants of lifting force in real conditions

During everyday use, the real power depends on many variables, presented from the most important:
  • Air gap (betwixt the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
  • Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
  • Steel thickness – too thin plate causes magnetic saturation, causing part of the flux to be escaped into the air.
  • Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
  • Plate texture – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate reduces the holding force.

Safety rules for work with neodymium magnets
Fire warning

Dust produced during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Permanent damage

Keep cool. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, look for HT versions (H, SH, UH).

Sensitization to coating

Certain individuals have a hypersensitivity to nickel, which is the standard coating for NdFeB magnets. Frequent touching may cause an allergic reaction. It is best to wear protective gloves.

Choking Hazard

Only for adults. Small elements pose a choking risk, leading to serious injuries. Keep away from children and animals.

Finger safety

Danger of trauma: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Use thick gloves.

Magnet fragility

NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them cracking into small pieces.

Pacemakers

Patients with a pacemaker should maintain an safe separation from magnets. The magnetism can interfere with the functioning of the life-saving device.

Protect data

Equipment safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Respect the power

Be careful. Rare earth magnets act from a distance and connect with massive power, often faster than you can react.

Precision electronics

Be aware: rare earth magnets produce a field that interferes with precision electronics. Maintain a separation from your mobile, tablet, and navigation systems.

Important! More info about hazards in the article: Magnet Safety Guide.