The direct American equivalent of China's Q355B H-beam is ASTM A992 (per ASTM A992/A992M). This equivalence is rooted in matching core mechanical properties and application scope: both grades target a minimum yield strength of 355 MPa (Q355B: 355 MPa; ASTM A992: 345 MPa-note: 345 MPa ≈ 50 ksi, the primary specification for A992, with practical overlap for structural use) and maintain similar strength for thick sections (A992: 310 MPa for >100 mm; Q355B: 310 MPa for >63 mm). Kimyoviy jihatdan ular uglerod (A992: maksimal 0,23%; Q355B: maks. 0,24%), marganets (A992: 1,00-1,65%; Q355B: 1,00-1,60%), fosfor (ikkalasi maksimal 5%), 0,0 sulfür uchun nazorat qilinadigan chegaralarni taqsimlaydi. 0,035%), solishtirma payvandlanish va egiluvchanlikni ta'minlaydi.
Q355B 0 daraja (minimal 34 J) va A992 uchun -4 daraja F (-20 daraja) (kamida 20 fut-lb ≈ 27 J) da zarba sinovini talab qilsa-da, A992 ning pastroq{14}}harorat sinovi Q3-5B ga mos kelishini kafolatlaydi. Ikkala nav ham yuqori qavatli ramkalar, ko'priklar va sanoat tayanchlari kabi tizimli ilovalar uchun mo'ljallangan, bu ASTM A992 ni Q355B uchun eng amaliy Amerika o'rnini bosuvchi qiladi. Kichik oqim kuchi farqi (345 MPa va . 355 MPa) ko'pgina dizaynlar uchun ahamiyatsiz, chunki AISC 360-10 (Amerika dizayn kodi) va GB 50017-2017 (Xitoy kodi) materiallarning o'zgaruvchanligini hisobga olish uchun o'xshash yuk omillaridan foydalanadi.