Cascadia titanium rings are available in the two most common grades of titanium: Aerospace Grade 5 (Ti 6Al/4V alloy) and the Commercially Pure (CP Grade 2). Both grades are nickel-free and make an attractive, strong, light weight ring.
The natural color of titanium is a cool silver-gray. Its tone is comparable to platinum or stainless steel, but with a slightly darker complexion. Titanium does not match silver or white gold, which are lighter in color.
Aerospace Grade 5 Titanium is an alloy containing 90% titanium, 6% aluminum, and 4% vanadium. It is harder than CP grade, with a tensile strength of over 130,000 psi. When anodized, aerospace grade titanium colors are slightly more vibrant than CP grade titanium colors. Most people select the Aerospace Grade Titanium for their ring.
Commercially Pure Titanium is 98.99% pure, unalloyed titanium. This grade is slightly darker and softer than the Aerospace Grade 5, but still harder than gold. It has a tensile strength of over 40,000 psi.