Cobalt vs Tungsten Carbide
October 21, 2019 11:50AM
Cobalt vs Tungsten Carbide



Yesterday was an active news day for Scott Kay, as a number of major jewelry industry news bloggers published articles covering the company and its product, SK Cobalt Rings made from BioBlu™27 Cobalt. Two articles in particular stand out, the first is Scott Kay’s Cobalt Wedding Bands, published by Jewelry News Network, and the second is The Search For Alternative Metals.rose gold Tungsten Rings mens

The Jewelry News Network article explores the many merits of BioBlu™27 Cobalt, a contemporary metal of such high durability and performance, that it is used in critical aerospace applications and cardiac surgical tools. The second article, by Jewellery Net Asia, is more directed towards the alternative metals market, with a specific mention of Scott Kay’s use of BioBlu™27 Cobalt in his line of men’s wedding rings.

The Cobalt vs Tungsten Carbide Debate Continues
Both articles offer excellent information about contemporary metals, particularly BioBlu™27 Cobalt. The Jewelry News Network touched upon the cobalt vs tungsten carbide comparison, supplying a link to a video where Scott Kay demonstrates that tungsten carbide rings are not as durable as many claim.

Filmed at a press conference during a jewelry editors industry conference in New York City on October 29, 2009, Scott Kay demonstrates just how easy it is to break a ring made from tungsten carbide. The most compelling of Kay’s demonstration was the drop test: it appears that a tungsten carbide ring can shatter when simply dropped on a hard surface, clearly refuting the oft-made proclamation that rings made from tungsten carbide are indestructible.

Rings Made From Tungsten Carbide Are Not Indestructible
The Achilles heel of the tungsten carbide ring is its brittleness. Tungsten Carbide Rings are made from a tungsten powder and carbon sintered with nickel, resulting in a material known as “cemented carbide”. This aggregate metal contains tiny voids. A ring made from Tungsten Carbide cannot bend so certain kinds of shock can break them, as demonstrated in Scott Kay’s video link above. This is in sharp contrast to BioBlu™27 Cobalt, which is 100% solid and wont break when subjected to extreme abuse.
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