Grade 23 (6-4 ELI)
Grade 23 is also known as Ti-6AL-4V-ELI or simply Ti 6-4 ELI. ELI is short for "Extra Low Interstitials". Grade 23 is very similar to Grade 5 except Grade 23 has lower oxygen, nitrogen and iron. The lower interstitials provide more ductility and better fracture toughness (slightly less strength) than Grade 5.

Market Applications
Aerospace, Medical, Chemical Processing, Cryogenics