38w and 44w are both listed in ASME section IV Table HF-300.1 "SA/CSA-G40.21 as specified in Section IIA grade 38W or 44W, may be used in lieu of SA-36 for plates and bars not exceeding 3/4 in.
Carbon Yield Tensil
38w 0.20% max 38 ksi min 60 ksi min 18%
44w...