Abstract: A pre-alloyed powder having a composition consisting of, in weight % (wt. %): C, 0.02-0.04; Si, 0.1-0.4; Mn, 0.1-0.5; Cr, 11-13; Ni, 7-10; Cr+Ni, 19-23; Mo, 1-25; Al, 1.4-2.0; N, 0.01-0.75. Optionally, the pre-alloyed powder contains: Cu, 0.05-2.5; B, 0.002-2.0; S, 0.01-0.25; Nb, 0.01 max; Ti, 2 max; Zr, 2, max; Ta, 2 max; Hf, 2 max; Y, 2 max; Ca, 0.0003-0.009; Mg, 0.01 max; O, 0.003-0.80; and REM, 0.2 max. Fe and impurities comprise the balance.

Abstract: The invention is directed to a steel for making a hot working tool, the steel consists of in weight % (wt. %): C 0.01-0.08 Si 0.05-0.6? Mn 0.1-0.8 Cr 3.9-6.1 Ni 1.0-3.0 Mo 7.0-9.0 Co ?9.0-12.5 Cu 0.2-6.5 N 0.01-0.15 Balance optional elements, impurities and Fe. The invention is also directed to pre-alloyed powders made from said alloy and AM articles produced from said powder.

Abstract: The invention relates steel suitable for plastic moulding tools. The steel comprises the following main components (in wt. %): C 0.02-0.04 Si 0.1-0.4 Mn 0.1-0.5 Cr 11-13 Ni 7-10 Mo 1-25 Al 1.4-2.0 N 0.01-0.15 optional elements and impurities balance. The invention is also directed to pre-alloyed powders made from said alloy, the use of such powder as well as AM articles produced from said powder.