ASTM 1020 1025 1035 1045 1050 C45 S45C S20C Carbon Steel Round Bar steel pas Nqe/Muab sawing tshuab txiav

Raws li cov ntsiab lus carbon, cov hlau hloov pauv tau muab faib ua cov hlau qis, cov hlau nruab nrab thiab cov hlau siab. Cov pa roj carbon tsawg uas muaj tsawg dua 0.25% C tau siv dav rau qhov nqus cov duab xws li tsheb thiab cov kaus poom vim nws cov duab sib sib zog nqus zoo thiab weldability. 20G yog cov khoom siv tseem ceeb rau lub rhaub dej qub. Tsis tas li ntawd, cov pa roj carbon tsawg kuj tseem siv dav ua cov hlau carburizing hauv cov tshuab tsim khoom lag luam. 0.25-0.60% C yog cov pa roj carbon nruab nrab, uas yog siv feem ntau hauv kev ua kom sov thiab ua kom sov lub xeev los ua qhov chaw rau kev tsim khoom siv tshuab. Ntau tshaj li 0.6% C yog cov pa roj carbon ntau, uas feem ntau yog siv rau kev tsim cov springs, zog, yob, thiab lwm yam Hloov cov hlau (qib I steel) yog rau cov hlau tsis zoo tib yam, thiab lwm cov hlau tuav feem ntau yog cov hlau tsis muaj hlau; Lub zog ntawm cov hlau puag ncig yog qis dua li ntawm lwm cov hlau tuav. Ntawd yog hais, piv nrog lwm cov hlau tuav, hloov cov hlau tuav nrog tib txoj kab uas hla tuaj yeem tiv taus lub zog tensile tsawg dua, tab sis cov yas ntawm cov kab hlau puag ncig muaj zog dua li ntawm lwm cov hlau tuav. Ntawd yog hais tias, puag ncig cov hlau tuav muaj qhov deformation loj dua ua ntej raug rub tawm, thaum lwm cov hlau tuav muaj qhov deformation me dua ua ntej raug rub tawm.