Hot mechanical properties of 24Cr-14Ni high alloy billets

24Cr-14Ni alloys have gained importance in high temperature applications. Because of δ-ferrite and o phase formation, 24Cr-14Ni austenitic stainless steel billets are difficult to hot work. The mechanical properties at high temperature of such stainless steels are investigated on a hot tensile test machine according to hot-rolling conditions, under different time and temperature regimes. These 24Cr-14Ni stainless steels were also hot rolled under various reduction ratios. The influences of the reduction ratio on the hot mechanical properties and phase transformation from δ-ferrite into a phase in 24Cr-4Ni stainless steels are discussed in detail. The results obtained can be a contribution to improve the hot rolling of this high alloy stainless steel.