ASTM A992 yog dab tsi?

LubASTM A992/A992M -11 (2015) cov lus qhia txhais cov ntu hlau dov rau kev siv hauv cov qauv tsev, cov qauv choj, thiab lwm yam qauv siv feem ntau. Tus qauv qhia meej txog cov piv siv los txiav txim siab cov tshuaj lom neeg xav tau rau cov yam ntxwv thermal xws li: carbon, manganese, phosphorus, sulfur, vanadium, titanium, nickel, chromium, molybdenum, niobium, thiab tooj liab. Tus qauv kuj qhia meej txog cov khoom compressive uas xav tau rau kev sim tensile xws li lub zog yield, lub zog tensile, thiab elongation.

ASTM A992(Fy = 50 ksi, Fu = 65 ksi) yog qhov kev qhia tshwj xeeb rau cov seem flange dav thiab tam sim no hloov chawASTM A36thiabA572Qib 50. ASTM A992/A992M -11 (2015) muaj ntau qhov zoo sib txawv: nws qhia txog cov khoom siv ductility, uas yog qhov siab tshaj plaws tensile rau yield piv ntawm 0.85; ntxiv rau, ntawm cov nqi sib npaug carbon txog li 0.5 feem pua, nws qhia tias cov khoom siv ductility yog 0.85 feem pua. , txhim kho qhov weldability ntawm cov hlau ntawm cov nqi sib npaug carbon txog li 0.45 (0.47 rau tsib qhov profile hauv Pawg 4); thiab ASTM A992/A992M -11 (2015) siv rau txhua hom kub-kuav hlau profiles.

Qhov sib txawv ntawm ASTM A572 Qib 50 cov khoom siv thiab ASTM A992 Qib khoom siv
Cov khoom siv ASTM A572 Qib 50 zoo ib yam li cov khoom siv ASTM A992 tab sis muaj qhov sib txawv. Feem ntau cov flange dav dav siv niaj hnub no yog qib ASTM A992. Thaum ASTM A992 thiab ASTM A572 Qib 50 feem ntau zoo ib yam, ASTM A992 zoo dua li cov tshuaj lom neeg thiab kev tswj cov khoom siv kho tshuab.

ASTM A992 muaj qhov tsawg kawg nkaus ntawm lub zog tawm los thiab qhov tsawg kawg nkaus ntawm lub zog tensile, nrog rau qhov siab tshaj plaws ntawm lub zog tawm los rau lub zog tensile thiab qhov siab tshaj plaws ntawm cov pa roj carbon sib npaug. Qib ASTM A992 pheej yig dua li ASTM A572 Qib 50 (thiab ASTM A36 qib) rau cov seem flange dav.