Inconel 718 (L-PBF, Renishaw In718-0405, as-built)

Renishaw In718-0405 is the maker's grade of Inconel 718 for laser powder bed fusion, here in the as-built condition without post-print heat treatment. Rapid melt-pool solidification gives a fine cellular-dendritic structure with columnar grains along the build direction and niobium segregation between cells, without the age-hardening precipitates of the heat-treated alloy. As-built parts carry high residual stress, differ in properties between build directions and have rough supported surfaces. They are normally stress relieved on the plate, then solution treated and aged, often with hot isostatic pressing. Printed parts in this alloy serve gas turbine and rocket engine hardware, combustor parts, heat exchangers and brackets. Every value on this page is read from Renishaw'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.