MIL-S-22664 Revision B, March 15, 1988
STEEL, STRUCTURAL SHAPES ALLOY, HIGH YIELD STRENGTH (HY-80 AND HY-100) (METRIC)
Includes all amendments and changes through Cancellation Notice 2, June 3, 2013
Additional Comments: CNCL NO S/S
This specification covers HY-80 and HY-100 alloy steel rolled and extruded shapes for use in applications where good weldability and notch toughness are required.