Tungsten carbide is widely used in jewelry, cutting tools, and industrial applications because of its exceptional hardness and durability. A common question people ask is: does tungsten carbide tarnish over time?
Tungsten carbide is a compound of tungsten and carbon. It is extremely hard—second only to diamond—and has a dense molecular structure. This makes it resistant to scratches, corrosion, and surface damage.
Unlike silver or other reactive metals, tungsten carbide does not tarnish or rust. Its chemical stability ensures that it maintains its original appearance even after long-term use. Whether exposed to air, moisture, or daily wear, tungsten carbide resists discoloration.
While the material itself won’t tarnish, tungsten carbide products sometimes have a cobalt or nickel binder. These binders can react with oils or chemicals, causing minor surface changes. Regular cleaning with mild soap and water helps maintain a polished look.
Jewelry – Tungsten carbide rings remain shiny and scratch-resistant.
Cutting Tools – Blades and drill bits stay durable without losing their surface integrity.
Industrial Parts – Long-lasting performance in harsh environments.
So, does tungsten carbide tarnish? No—the compound itself is highly resistant to tarnish and corrosion. With minimal maintenance, tungsten carbide items can retain their strength and shine for many years.