Abstract: The present application relates to ferrous (steel) alloy compositions that can be printed by powder bed fusion additive manufacturing. The combination of printability and properties is achieved by formulating chemistries specifically for the powder bed fusion process.

Abstract: A printed metallic part is provided. The alloy has the composition of Fe at 69.2 wt. % to 89.1 wt. %; Cr at 7.25 wt. % to 16.0 wt. %; Nb at 0.01 wt. % to 10.0 wt. %; Mo at 0.5 wt. % to 4.0 wt. %. C at 0.03 wt. % to 0.4 wt. % and optionally one or more of Ni, Cu, Si, W, Mn, N and B. The printed metallic part has a tensile strength of at least 1300 MPa, a yield strength of at least 700 MPa, an elongation of at least 4.0%, and a hardness of at least 45 HRC.

Abstract: The present invention relates to an iron-based alloy powder containing non-spherical particles wherein the alloy comprises the elements Fe (iron), Cr (chrome) and Mo (molybdenum), and at least 40% of the total amount of particles have a non-spherical shape. In said iron-based alloy powder, Cr is present at 10.0 wt. % to 18.3 wt. %, Mo is present at 0.5 wt. % to 2.5 wt. %, C is present at 0 to 0.30 wt. %, Ni is present at 0 to 4.0 wt. %, Cu is present at 0 to 4.0 wt. %, Nb is present at 0 to 0.7 wt. %, Si is present at 0 to 0.7 wt. % and N is present at 0 to 0.20 wt. %, the balance up to 100 wt. % is Fe.