Martin Titanium Core strings deliver the ultimate player’s experience with patented technology and a proprietary winding process only available from Martin! The patented technology and proprietary winding process delivers the most consistently wrapped string on the market and the consistency of the wrap affects every aspect of a string's playability, endurance, and tone. With Titanium Core strings, you will find the most superior intonation and tuning stability of any string you’ve ever played. And Titanium is naturally more flexible than steel, but just as strong, so the strings are easier to press down reducing finger fatigue. Even more amazing, the combination of Titanium and Nickel used in our Titanium Core strings provides natural corrosion resistance, meaning they will last a really long time under normal circumstances.