TeASTM A992Ko te whakatakotoranga /A992M -11 (2015) e tautuhi ana i ngā wāhanga maitai hurihuri hei whakamahi i roto i ngā hanganga whare, ngā hanganga piriti, me ētahi atu hanganga e whakamahia whānuitia ana. E tohu ana te paerewa i ngā ōwehenga e whakamahia ana hei whakatau i te hanganga matū e hiahiatia ana mō ngā āhuatanga tātari wera pēnei i: te waro, te manganese, te whākawa, te whanariki, te vanadium, te titanium, te nickel, te chromium, te molybdenum, te niobium, me te parahi. E tohu ana hoki te paerewa i ngā āhuatanga kōpeketanga e hiahiatia ana mō ngā tono whakamātautau kume pēnei i te kaha tuku, te kaha kume, me te roa.
ASTM A992(Fy = 50 ksi, Fu = 65 ksi) te whakatakotoranga kōtaha pai mō ngā wāhanga whānui o te flange, ā, inaianei ka whakakapiaASTM A36meA572Tau 50. He maha ngā painga motuhake o te ASTM A992/A992M -11 (2015): e tohu ana i te ngāwari o te rauemi, arā, ko te ōwehenga kume ki te hua mōrahi o te 0.85; hei tāpiritanga, i ngā uara ōrite waro tae atu ki te 0.5 ōrau, e tohu ana ko te ngāwari o te rauemi he 0.85 ōrau. , ka whakapai ake i te āheinga whakarewa o te maitai i ngā uara ōrite waro tae atu ki te 0.45 (0.47 mō ngā kōtaha e rima i roto i te Rōpū 4); ā, e pā ana te ASTM A992/A992M -11(2015) ki ngā momo kōtaha maitai hurihuri-wera katoa.
Ngā rerekētanga i waenga i te rauemi ASTM A572 Grade 50 me te rauemi ASTM A992 Grade
He rite te rauemi ASTM A572 Grade 50 ki te rauemi ASTM A992 engari he rerekētanga anō kei reira. Ko te nuinga o ngā wāhanga whānui e whakamahia ana i ēnei rā he ASTM A992. Ahakoa he rite tonu te ASTM A992 me te ASTM A572 Grade 50, he pai ake te ASTM A992 i runga i te hanganga matū me te whakahaere āhuatanga ā-mīhini.
He iti rawa te uara o te kaha tuku me te uara o te kaha kume iti rawa o te ASTM A992, tae atu ki te ōwehenga o te kaha tuku ki te kaha kume mōrahi me te uara ōrite waro mōrahi. He iti ake te utu hoko o te karaehe ASTM A992 i te ASTM A572 Karaehe 50 (me te karaehe ASTM A36) mō ngā wāhanga whānui.
Wā tuku: Pipiri-18-2024
