We make rings in three grades of titanium. Two of those are considered grade 5 aerospace grades. One grade, called 6Al4V has 6% aluminum and 4% vanadium added to the titanium to make it stronger. It has a minimum tensile strength of 135,000 psi. It is commonly used in jet fighter parts, as well as prosthetic implants, and sporting equipment. It finishes well and works great for rings.
The other alloy, called 8-1-1 is even stronger. It has 8% aluminum, 1% vanadium, and 1% molybdenum added to the titanium. It has a minimum tensile strength of 150,000 psi. It is commonly found in jet engine compressor blades. The color of the two grades is the same. Either grade will do nicely for a ring. The question is, will you be pulling an airplane or a ship with your ring. :o)
We also make rings in what's called Commercially Pure titanium. This is an unalloyed pure form of titanium and won't be as hard or strong as the aerospace grades. It looks and finishes the same as the aerospace grades.
We now also offer a metal called cobalt chrome. Cobalt chrome is harder and whiter in color than titanium. It closely resembles platinum and has the weight of gold. It has good luster and is hypoallergenic just like titanium. It is used in dentistry. It is a great metal for rings.
Our rings can also be made in stainless steel. It has a look exactly like that of titanium, but the weight will be between titanium and cobalt chrome. There's no real difference from at of titanium other than being slightly heavier. It cannot be anodized like titanium can be.