SA542 yog tsim rau ob 2¼Cr-1Mo thiab peb Cr-Mo-V alloy steel daim hlau siv nyob rau hauv quenched thiab tempered mob rau kev tsim cov welded siab hlab ntsha thiab cov khoom.
SA542 yog muab nyob rau hauv tsib hom hlau, uas yog "A", "B", "C", "DD" thiab "E". Hom "B" zoo ib yam rau hom "A" tshwj tsis yog tias cov pa roj carbon, phosphorus, sulfur thiab npib tsib xee ntau yam txwv tsis pub sib txawv. Cov steels kuj tau muab faib ua tsib pawg nrog lub zog muaj npe hauv qab no. hom "E" tsuas muaj qeb 4 thiab 4a steels.
Qhov siab tshaj plaws ntawm cov hlau phaj tsuas yog txwv los ntawm kev muaj peev xwm ntawm cov tshuaj muaj pes tsawg leeg kom ua tau raws li cov cai ntawm cov cuab yeej cuab tam. Qhov tsawg kawg nkaus thickness ntawm steel phaj yog txwv rau 3/16in. (5 hli)
SA542 steelmaking txoj kev: SA542 steel yuav tsum yog ib tug quenched steel thiab yuav tsum tau raws li qhov zoo austenite grain loj yuav tsum tau ntawm A20 / A20M tus qauv.
Cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab ntawm SA542 tuaj yeem raug xa mus rau tus qauv ASME / ASTM.
