Stainless Steel Sheet/Plate 17-7 is normally used for aerospace, chemical, industrial, and natural gas/petroleum/oil applications. 17-7 stainless is the most formable of all precipitation-hardening stainless and provides high strength and hardness. The valuable mechanical properties of 17-7 stainless sheet makes it particularly well suited for aerospace applications as well as its low distortion in heat treatment makes it a common choice for intricate parts. 17-7 sheet/plate stock is available in full size and custom cut sizes. This material meets the following specifications: AMS 5528, ASTM A693, and ASTM F899.