Ti-6Al-4V ELI (Grade 23) (L-PBF, EOS Titanium Ti64ELI, as-built)

EOS Titanium Ti64ELI as-built is the Grade 23 extra-low-interstitial Ti-6Al-4V alloy in this maker's laser powder bed fusion grade, left without heat treatment after printing. Rapid cooling of the melt pool gives a fine acicular alpha-prime martensite within columnar prior-beta grains that grow along the build direction, so the material is strong but of limited ductility and somewhat anisotropic. Parts carry high residual stress and need supports. They are usually stress relieved, often hot isostatically pressed, and machined where the rough as-built surface matters. Printed parts are used for orthopedic implants with porous lattice structures and for lightweight aerospace brackets and housings. Every value on this page is read from EOS's own material data sheet — quoted, cited and dated — and is the maker's statement about printed material, not a measurement by MatWorld; none has yet been reviewed by a person.