Dab tsi yog ASTM A572 qib 50 sib npaug GB steel khoom

A572GR50 hlauyog ib qho tsis tshua muaj alloy siab zog cov qauv hlau uas tau siv dav hauv kev tsim kho thoob ntiaj teb. Hom hlau no paub txog nws cov vuam zoo heev thiab tsim cov khoom, ua rau nws zoo tagnrho rau kev siv cov qauv. "GR" sawv cev rau Qib, thiab "50" yog hais txog qhov tsawg kawg nkaus tawm los ntawm 50 ksi (los yog 345 MPa).

Q355Bsteel phaj yog ib yam uas tsis tshua muaj alloy siab zog steel phaj, nws cov tshuaj muaj pes tsawg leeg muaj ib feem ntawm carbon, silicon, manganese, sulfur, phosphorus thiab lwm yam ntsiab. Nws yog tsim los ntawm kev tswj dov thiab tswj cov txheej txheem txias, thiab muaj qhov zoo toughness thiab lub zog tom qab kev kho cua sov.