Alloy Hlau Daim Hlau & Cov Ntawv Qhia & Coils
Cov pa roj carbon cov ntsiab lus ntawm 4140 alloy steel yeeb nkab yog 0.38-0.43%, cov ntsiab lus phosphorus yog 0.8-1.10%, thiab cov ntsiab lus molybdenum yog 0.8-1.10%. yog 0.15-0.25% qhov siab tshaj plaws hauv nws cov lus. Cov khoom siv tuaj yeem yog cov cua sov kho rau anneal thiab normalize hauv huab cua, lossis quench thiab temper hauv polymer lossis roj.
Nruj me ntsis kev hais lus, txhua tus steel yog ib qho alloy, tab sis tsis yog txhua tus hlau yog hu ua "Alloy Steel". Cov hlau yooj yim tshaj plaws yog hlau (FE) suav nrog cov pa roj carbon (c) (txog 0.1% rau 1%, nyob ntawm seb puas muaj dab tsi (tshwj tsis yog cov neeg negrigible traces); Cov no yog hu ua cov hlau siv roj carbon. Txawm li cas los xij, lub sij hawm "hlau" yog tus qauv uas yog hais txog cov hlau nrog lwm cov khoom sib txuas ntxiv rau cov pa roj carbon. Ib txwm muaj willoyants suav nrog manganese (npib tsib xee), npib tsib xee, chromium, molybdenum, vanadium, silicon, thiab boron. Tsawg dua cov ubyants suav nrog txhuas, cobalt, cerium, cerium, cerium, cerium, titanium, tungsten, tin, zinc, thiab zirconium.
Lub corrosion resistance ntawm sa 335 P91 seamonless yeeb nkab yog ntau dua li cov tshuaj carbon. Qib P91 yog siv rau cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov hlau alloy. Tus hlau chromium-molybdenum hlau, cov tshuaj lom neeg muaj kuab lom ntawm Astm A335 P91 Alloy Steel Yeeb muaj 9% chromium thiab 1% molybdenum thiab vanadium.