Titanium
Titanium is a low density, strong, lustrous and corrosion-resistant material with a silvery coloration. It has the highest strength-to-weight ratio of any metal and in its unalloyed condition, titanium is as strong as some steels but it is also 45% lighter whilst retaining a good ductility.
There are approximately 30 Grades of titanium in the ASTM standards. These are made up of various alloys, of which Grades 1 to 4 are commercially pure and unalloyed. These four are distinguished by their varying degrees of tensile strength, as a function of oxygen content, with Grade 1 being the most ductile (lowest tensile strength with an oxygen content of 0.18%), and Grade 4 the least (highest tensile strength with an oxygen content of 0.40%). The other more alloyed grades are each designed for specific purposes, be it ductility, strength, hardness, electrical resistivity, creep resistance, resistance to corrosion from specific media, or a combination of the above.
Columbia Metals hold comprehensives stocks of the Grade 5 / Ti-Al6-4V alloy. This is the most widely used of all the titanium grades and is supplied in the annealed condition as per the AMS 4928R or BS2TA11 (for ease of machinability). This can then be strengthened with a relatively simple heat treatment to offer very high mechanical properties.
The combination of these good mechanical properties (maintained up to ~400oC),a low density of 4.42 g/cm3anda very good corrosion resistance make the Ti-6Al-4V ideal for applications in the aerospace, marine, offshore oil & gas and motorsport industries.
We are also able to obtain other grades such as Grade 2 and 7 for specific orders. For more information on our stocks and grades please contact us above.