Titanium Core Acoustic Guitar Strings Martin Titanium Core strings deliver the ultimate player’s experience with patented technology only available from Martin. Experience a new level of comfort and response with industry leading stability and superior corrosion resistance. Titanium is more flexible than steel, providing a very comfortable playing experience while remaining strong and durable. Martin uses pure Nickel to wrap the Titanium strings. Pure nickel is naturally corrosion resistant and holds its tone for a very long time. The pure nickel and titanium work together to provide the ultimate corrosion-free string. Gauge E B G D A E Tension Model Light .012 .016 .026 .034 .044 .055 160.2 MTCN160