Dab tsi yog ASTM A992?

TusATM A992/ A992M -11 (2015) Cov lus qhia tshwj xeeb txhais cov qauv hlau rau kev siv hauv tsev qauv qauv, choj qauv, thiab lwm yam siv qauv siv. Tus qauv qhia cov kev sib piv siv los txiav txim siab cov tshuaj ntsuam xyuas cov tshuaj lom neeg uas yog: Vanadium, Npee, Molybenum, Niobium, thiab tooj. Tus qauv kuj tseem qhia txog cov khoom siv compressive rau cov ntawv thov Tensile xws li tau ua lub zog, tensile lub zog, thiab elongation.

ATM A992(FY = 50 KSI, FU = 65 KSI) yog cov ntaub ntawv zoo tshaj plaws rau Flarging Seem thiab tam sim no hloovASTM A36thiabA572Qib 50. Astm A992 / A992M -11 (2015) muaj ntau yam zoo sib txawv: nws qhia meej cov khoom siv ducantity, uas yog qhov siab tshaj plaws kom pom zoo ntawm 0.85; Tsis tas li ntawd, ntawm cov pa carbon sib npaug muaj nuj nqis txog li 0.5 feem pua, nws qhia meej tias cov khoom siv ductility yog 0.85 feem pua. , txhim kho qhov weldability ntawm cov hlau ntawm cov roj carbon sib npaug ntawm 0.45 (0.47 rau tsib tus neeg ua haujlwm 4); Thiab ASTM A992 / A992M -11 (2015) siv rau txhua hom ntawm kub-rolled steel profiles.

Qhov sib txawv ntawm ASTM A572 Qib 50 Cov Khoom Siv thiab ASTM A992 Cov Khoom Siv Qib
ASTM A572 Qib 50 cov khoom yog zoo li ASTM A992 cov khoom siv tab sis muaj kev sib txawv. Feem ntau dav Flange Seem uas siv niaj hnub no yog Astm A992 qib. Thaum astm A992 thiab ASTM A572 qib 50 feem ntau yog tib yam, t tm A992 yog qhov zoo dua li cov khoom siv tshuaj lom thiab cov khoom ntiag tug.

ASTM A992 muaj qhov tsawg kawg yog cov txiaj ntsig muaj zog thiab qhov tsawg tshaj plaws muaj zog rau tensile muaj zog thiab tus nqi ntau tshaj plaws. ASTM A992 qib tsawg dua los yuav cov astm A572 Qib 50 (thiab ANTM A36 qib) rau dav flange ntu.