Question: what is fy and fu of steel?
Answer: ASTM A992 steel is a structural steel alloy often used in the USA for steel wide-flange and I beams. ... The industry's technical institute describes the standard thus: "ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) is the preferred material specification for wide-flange shapes, having replaced ASTM A36 and A572 grade 50.