CarElso 70 HIC is a steel alloy with special melt practice producing a clean, normalized pressure vessel material with excellent resistance to hydrogen-induced cracking (HIC). This datasheet provides information on composition and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SA-588. Producer or source: Industeel USA, LLC. Originally published November 2008, revised January 2009.