Why arent gun barrels made out of titanium?

There are..... Taurus Total titanium series. To be sure, titanium has been used for years to make some small, high-stress gun parts. No gun maker, however, had plunged head-on into the manufacture of a revolver in which the entire frame, barrel and cylinder are made of drop-forged and extruded titanium alloy, while maintaining the retail price at a reasonable level. Although titanium is a fairly common material, it is difficult to process, costing up to 10 times more than steel, pound for pound. High cost aside, titanium offers higher elasticity and strength than steel, while weighing just two-thirds of an equivalent volume. Titanium is also virtually impervious to corrosion, another highly desirable feature to have in a gun, particularly one intended for personal defense on a daily basis. In fact, titanium is so corrosion-proof that it is widely used for surgical bone-replacement implants. The 2" titanium barrels on all of these models have high-tensile stainless steel bore liners. This is due to the fact that titanium, being more elastic than steel, will not hold rifling. Titanium, however, allows the barrels to be ported, something not possible with stainless-lined aluminum barrels. Aluminum simply could not withstand the erosion caused by the hot gas vented through the ports. All of these compact Taurus titanium snubbies are, therefore, factory-ported -- three neat holes on each side of the front sight -- a crucial factor contributing to their superb shootability. Even 155mm howitzers are made most from titanium, As are many aircraft.

Titanium is a very hard metal and requires a large machine shop to make it into a barrel or other stuff. Its also very expensive to work with and would also make the firearm expensive. One firearm i know of that uses titanium is the Barrett M107A1, it made the gun 6 pounds lighter so that's why they did it.

two things, heat dispersion and cost. Titanium is very expensive. also, a lighter barrel means less time for the barrel to heat up and less time you can shoot it without possibly damaging the rifling or warping the barrel. I believe some custom guns have titanium and other exotic metals for barrels, but are extremely expensive to make and find parts for if they were to ever break.

Bottom line cost is why. All the reasons why are listed here already

Its much more expensive and much harder to work with.

Titanium is expensive and has a poor tinsel strength. the idiot that said america is cheap needs to explain the rest of the world also.

It is always all about the money; and titanium is expensive and expensive to work with.

Costs much more, is harder to work with, and is not as strong as steel.

america is cheap and steel is cheaper than titanium