Speciality steels – also referred to as alloy steel – include added alloyed materials that deliver special properties to the final product. Speciality steels are engineered to offer top-quality general performance under specific ailments. “PH”: Means Precipitation Hardening, indicating a steel which can be hardened by a special heat treatment https://madanijayateknik.com/service/detail/round-bar-plate-sheet-pipe-tube-stainless-steel-321-uns-s32100-din-x6crniti18-10-aisi-321-dan-321h-uns-s32109-din-x8crniti18-10-aisi-321h