Titanium Core Acoustic Guitar Strings Nickel Wrap Light Tension. Titanium Core acoustic guitar strings deliver the ultimate player’s experience with patented technology and a prioprietary winding process only available from Martin. Experience a new level of comfort and response with industry-leading stability and superior corrosion resistance. The Process Martin employs a unique and proprietary winding process for their Titanium strings that produces strings like nothing else on the market. This process allows them to use materials that have never been used before to make guitar strings. This is a slow and methodical mechanical process that ensures the most consistent and securely wrapped string, an attribute that affects every aspect of the string’s playability, endurance and tone. The improved coupling and consistent gap between the round core wire and the wrap wire results in superb intonation. Like fine wine, this winding process takes a long time, but we know every set is worth the wait! The Core The name says it all! Martin’s Titanium Core strings use true titanium for the core wire of this new breed of strings. And you can only get them from Martin! The Titanium core wire is round, not hex, and titanium is more flexible than steel, providing a very comfortable playing experience while remaining strong and durable. The plain strings are also unique to this product, as they are cryogenically treated stainless steel. The cryogenic treatment protects the string and brings out more brilliance in the stainless steel, while the stainless steel itself provides enhanced flexibility and comfort. The Wrap Martin’s uses nickel to wrap the Titanium strings. Nickel is naturally corrosion-resistant and holds its tone for a very long time. The nickel and titanium work together to provide the ultimate corrosion-free string.