What Kinds of Magnets Are Used For Magnetic Jewelry?

- Jun 05, 2019-


Magnetic Therapy has become an alternative treatment method for many medical conditions. Magnetic bracelets are believed to work is via the magnetic influence over the blood flow at the wrist arteries, there are two main arteries at the wrist.

 

In this article, MagEnergy tell you what kind of magnets is best for magnetic therapy jewelry?

 

Magnets are objects that generate a magnetic field, a force-field that either pulls or repels certain materials, such as nickel and iron.

 

There are typically four categories of permanent magnets: neodymium iron boron (NdFeB), samarium cobalt (SmCo), alnico, and ceramic or ferrite magnets.

 

MagEnergy uses the most strong NdFeB for magnetic jewelry, as this type of magnet is composed of rare earth magnetic material, and has a high coercive force. They have an extremely high energy product range, up to 50 MGOe. Because of this high product energy level, they can usually be manufactured to be small and compact in size.

 

However, NdFeB magnets have low corrosion-resistance if left uncoated. If treated with gold, iron, nickel plating, or sealed with epoxy,so they can be used in many applications. They are very strong magnets and are difficult to demagnetize.

 

MagEnergy uses N50 type Neodymium magnets and all are covered with stainless steel cap then sealed by epoxy. So it could be safe to wear in a long time and waterproof.

 

Why N50 type magnets? Not N35, N40, N45. N50 is the most strong and good performance. Like the magnets, strength must above 1200Gauss, so the users could enjoy the magnetic field and effect. And most suitable magnets strength is 2500-3500Gauss. If too weak, magnetic therapy can’t work.  



Type

Residual lndurtion
Br(KGs)

Coereive Foree
bHe(KOe)

Intrinsic coereive
Force iGe(KOe)

Squareness
(Hk/iHe)

Max.Energy Product
(BH)max.(MGOe)

Max.Operating
Temp.(C)

Density
(g/cm)

N35

11.7-12.3

10.7-12.0

≥12

≥0.85

33-36

80

≥7.40

N38

12.1-12.7

11.1-12.4

≥12

≥0.85

36-39

80

≥7.40

N40

12.5-13.2

11.5-12.8

≥12

≥0.85

38-41

80

≥7.40

N42

12.9-13.5

11.5-13.2

≥12

≥0.85

40-43

80

≥7.40

N45

13.3-13.9

11.5-13.6

≥11

≥0.85

43-46

80

≥7.40

N48

13.7-14.3

11.5-14.0

≥11

≥0.85

46-49

80

≥7.40

N50

14.1-14.9

11.5-14.0

≥11

≥0.85

49-51

80

≥7.40

 

Samarium Cobalt (SmCo)

 

Like NdFeB magnets, SmCo magnets are also very strong and difficult to demagnetize. They are also highly oxidation-resistant and temperature resistant, withstanding temperatures up to 300 degrees Celsius. Two different groups of SmCo magnets exist, divided based on their product energy range. The first series (Sm1Co5) has an energy product range of 15-22 MGOe. The second series (Sm2Co17) has a range that falls between 22 and 30 MGOe. However, they can be expensive and have low mechanical strength.

 

Alnico

 

Alnico magnets get their name from the first two letters of each of three main ingredients: aluminum, nickel, and cobalt. Although they feature good temperature resistance, they can easily be demagnetized and are sometimes replaced by ceramic and rare earth magnets in certain applications. They can be produced by either sintering or casting, with each process yielding different magnet characteristics. Sintering produces enhanced mechanical traits. Casting results in higher energy products and enables the magnets to achieve more complicated design features.

 

Ceramic or Ferrite

 

Comprised of sintered iron oxide and barium or strontium carbonate, ceramic (or ferrite) magnets are typically inexpensive and easily produced, either through sintering or pressing. However, because these magnets tend to be brittle, they require grinding using a diamond wheel.聽They are one of the most commonly used types of magnet, and are strong and is not easy to demagnetize.

 

Neodymium magnetic therapy bracelets help alleviate pain, reduce inflammation and improve blood circulation.
It is also used to reduce stress and anxiety, improve sleep, and enhance overall balance and mood.

 

Contact info@biomagneticjewelry.com for the magnetic bracelets collection with the best price.