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neodymium magnets

We provide red color magnets Nd2Fe14B - our offer. All magnesy in our store are in stock for immediate purchase (check the list). See the magnet pricing for more details check the magnet price list

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Magnetic holders can be used to facilitate production processes, exploring underwater areas, or locating space rocks from gold read...

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NC NeoCube fi 5 mm kuleczki kolorowe / N38 - neocube

neocube

Catalog no 120229

GTIN: 5906301812685

5

Weight

145 g

Magnetization Direction

↑ axial

Coating

[NiCuNi] nickel

49.99 with VAT / pcs + price for transport

40.64 ZŁ net + 23% VAT / pcs

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NC NeoCube fi 5 mm kuleczki kolorowe / N38 - neocube
Specification/characteristics NC NeoCube fi 5 mm kuleczki kolorowe / N38 - neocube
properties
values
Cat. no.
120229
GTIN
5906301812685
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Weight
145 g [±0,1 mm]
Magnetization Direction
↑ axial
Coating
[NiCuNi] nickel
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N38

properties
values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
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 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

It is a magnetic puzzle allowing for building solids, chains, and jewelry. Arranging balls acts relaxingly, destresses, and improves concentration. It's an ideal gift for teenagers and adults looking for intellectual entertainment.
We warn: balls are dangerous if swallowed, therefore the toy is for people 14+. Swallowing several balls can lead to dangerous joining of them in the intestines. We recommend using the product by persons aware of the danger.
With intensive use, the coating of balls (especially colorful ones) may undergo natural wear. Black and gold versions are also very durable, but rainbow colors may wear off faster. Coating wear does not affect the magnetic force of the balls.
Yes, sets can be combined without limits, creating gigantic structures. If you have 5mm balls, buy the same ones so they fit perfectly together. More balls mean more fun and a bigger challenge.
The key to success is patience and separating balls one by one. When you have a chain, you can fold it into strips of 6 balls, and then into a rectangle. Beginnings can be difficult, but the satisfaction from a perfectly arranged cube is immense.

Strengths and weaknesses of neodymium magnets.

Besides their durability, neodymium magnets are valued for these benefits:

  • They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
  • They are noted for resistance to demagnetization induced by external disturbances,
  • Thanks to the shimmering finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
  • They feature high magnetic induction at the operating surface, which improves attraction properties,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
  • Possibility of exact forming as well as adapting to atypical requirements,
  • Key role in future technologies – they are used in computer drives, motor assemblies, medical equipment, also modern systems.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Disadvantages of neodymium magnets:

  • To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in creating threads and complex shapes in magnets, we recommend using casing - magnetic holder.
  • Possible danger 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 devices are able to disrupt the diagnostic process medical after entering the body.
  • Due to expensive raw materials, their price exceeds standard values,

Maximum magnetic pulling forcewhat contributes to it?

The declared magnet strength represents the peak performance, measured under laboratory conditions, meaning:

  • using a plate made of mild steel, functioning as a ideal flux conductor
  • whose transverse dimension equals approx. 10 mm
  • characterized by even structure
  • under conditions of gap-free contact (surface-to-surface)
  • for force acting at a right angle (in the magnet axis)
  • at ambient temperature room level

What influences lifting capacity in practice

In real-world applications, the real power depends on a number of factors, presented from most significant:

  • Distance (betwixt the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or debris).
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Surface structure – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

* Lifting capacity was determined using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. In addition, even a slight gap {between} the magnet’s surface and the plate decreases the holding force.

Safe handling of neodymium magnets

Danger to pacemakers

Warning for patients: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Precision electronics

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Permanent damage

Do not overheat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Safe operation

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

Finger safety

Risk of injury: The pulling power is so great that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Product not for children

Absolutely keep magnets out of reach of children. Choking hazard is significant, and the effects of magnets clamping inside the body are very dangerous.

Magnet fragility

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Safe distance

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).

Avoid contact if allergic

Studies show that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, prevent touching magnets with bare hands or select coated magnets.

Combustion hazard

Fire warning: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.

Caution!

Learn more about hazards in the article: Magnet Safety Guide.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98