Ti-6Al-4V ELI (Grade 23) (L-PBF, EOS Titanium Ti64 Grade 23, heat-treated)

EOS Titanium Ti64 Grade 23, heat-treated, is an extra-low-interstitial Ti-6Al-4V grade printed by laser powder bed fusion and then given a post-build heat treatment. As printed, it has columnar prior beta grains along the build direction, fine acicular martensite and high residual stress. Heat treatment relieves that stress and transforms the martensite into a fine alpha-beta structure with better ductility, but it does not close internal porosity, which needs hot isostatic pressing. Parts need support removal and usually machining of fatigue-critical surfaces. Typical uses are aerospace brackets, implant components with lattice structures and other complex titanium parts. 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.