6/4 is tubing, 3/2.5 is for plates and solid pieces.
Other way round I believe. 6/4 isn't normally available as tube, so you end up having to form 6/4 tube by bending plate into a tube and welding the seam, rather like ERW steel.
'Ti-6Al-4V has always been the first titanium choice in the aerospace industry. Due to the fact that it is not a malleable alloy, it is more commonly used in sheet and plate applications.'
Correct! My mistake. I’m a certified aircraft engineer, saw more titanium than you’d believe but it still used to make me go “oooh, lovely” each time.
@jj72 started
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Other way round I believe. 6/4 isn't normally available as tube, so you end up having to form 6/4 tube by bending plate into a tube and welding the seam, rather like ERW steel.
'Ti-6Al-4V has always been the first titanium choice in the aerospace industry. Due to the fact that it is not a malleable alloy, it is more commonly used in sheet and plate applications.'