US Patent Issued to A. Finkl & Sons on Nov. 18 for "Low phosphorus, zirconium micro-alloyed, fracture resistant steel alloys" (Illinois Inventors)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,619, issued on Nov. 18, was assigned to A. Finkl & Sons Co. (Chicago).

"Low phosphorus, zirconium micro-alloyed, fracture resistant steel alloys" was invented by Algirdas Underys (Arlington Heights, Ill.), Benjamin Ritchey (Chicago) and Jesse Adamson (Chicago).

According to the abstract* released by the U.S. Patent & Trademark Office: "A steel alloy composition is disclosed. The steel alloy composition may comprise 0.36% to 0.60% by weight carbon, 0.30% to 0.70% by weight manganese, between 0.001% to 0.017% by weight phosphorus, 0.15% to 0.60% by weight silicon, and 1.40% to 2.25% by weight nickel. The steel alloy composition may further comprise 0.85% to 1.60% by weight chromium...