ASTM A992 ke eng?

TheASTM A992Tlhaloso ea /A992M -11 (2015) e hlalosa likarolo tsa tšepe e phutholohileng bakeng sa tšebeliso mehahong ea meaho, mehahong ea borokho, le mehahong e meng e sebelisoang hangata. Tekanyetso e totobatsa likarolelano tse sebelisoang ho fumana motsoako oa lik'hemik'hale o hlokahalang bakeng sa likarolo tsa tlhahlobo ea mocheso tse kang: khabone, manganese, phosphorus, sebabole, vanadium, titanium, nickel, chromium, molybdenum, niobium le koporo. Tekanyetso e boetse e totobatsa thepa ea khatello e hlokahalang bakeng sa lits'ebetso tsa liteko tsa ho thaepa tse kang matla a tlhahiso, matla a ho thaepa le ho lelefala.

ASTM A992(Fy = 50 ksi, Fu = 65 ksi) ke tlhaloso e kgethwang ya profaele bakeng sa dikarolo tse sephara tsa flange mme jwale e nkela sebaka.ASTM A36leA572Sehlopha sa 50. ASTM A992/A992M -11 (2015) e na le melemo e 'maloa e ikhethang: e totobatsa ho ductility ha thepa, e leng karolelano e phahameng ka ho fetisisa ea ho tensile ho ea ho tlhahiso ea 0.85; ho phaella moo, ka boleng bo lekanang le khabone ho fihlela ho 0.5%, e totobatsa hore ductility ea thepa ke 0.85%, e ntlafatsa ho tjheseletsa ha tšepe ka boleng bo lekanang le khabone ho fihlela ho 0.45 (0.47 bakeng sa liprofaele tse hlano ho Sehlopha sa 4); 'me ASTM A992/A992M -11(2015) e sebetsa ho mefuta eohle ea liprofaele tsa tšepe tse phutholohileng ka ho chesa.

Phapang pakeng tsa thepa ea ASTM A572 Kereiti ea 50 le thepa ea ASTM A992 Kereiti
Thepa ea ASTM A572 Kereiti ea 50 e tšoana le thepa ea ASTM A992 empa ho na le liphapang. Likarolo tse ngata tsa flange tse pharaletseng tse sebelisoang kajeno ke tsa sehlopha sa ASTM A992. Leha ASTM A992 le ASTM A572 Kereiti ea 50 ka kakaretso li tšoana, ASTM A992 e phahametse mabapi le metsoako ea lik'hemik'hale le taolo ea thepa ea mechini.

ASTM A992 e na le boleng bo tlase ba matla a tlhahiso le boleng bo tlase ba matla a ho thaepa, hammoho le karolelano e phahameng ea matla a tlhahiso ho matla a ho thaepa le boleng bo phahameng ba carbon bo lekanang. Sehlopha sa ASTM A992 se theko e tlase ho se reka ho feta ASTM A572 Sehlopha sa 50 (le sehlopha sa ASTM A36) bakeng sa likarolo tse sephara tsa flange.