Cov tshuaj muaj pes tsawg leeg ntawm NM500 steel phaj yog tsim los ntawm hlau, carbon, manganese, phosphorus, sulfur thiab lwm yam khoom. Nws cov tshuaj muaj pes tsawg leeg tshwj xeeb raug tshuaj xyuas raws li hauv qab no:
Cov ntsiab lus ntawm carbon (C) feem ntau yog nyob nruab nrab ntawm {{0}}.37% thiab 0.43%, carbon yog lub ntsiab tseem ceeb uas cuam tshuam rau lub zog thiab hardness ntawm hlau.
Manganese (Mn) cov ntsiab lus tsawg dua lossis sib npaug li 1.70%, manganese cov ntsiab lus tuaj yeem txhim kho lub zog thiab tawv ntawm cov hlau, tab sis kuj ua rau kom muaj zog thiab hnav tsis kam ntawm cov hlau.
Cov ntsiab lus ntawm phosphorus (P) thiab sulfur (S) tsawg dua los yog sib npaug rau 0.025%, thiab ob lub ntsiab lus no muaj kev cuam tshuam rau qhov toughness thiab corrosion kuj ntawm hlau.
Tsis tas li ntawd, cov khoom siv kho tshuab ntawm NM500 steel phaj suav nrog lub zog tensile, lub zog tawm los, elongation thiab hardness. Nws cov kev ua haujlwm tshwj xeeb yog raws li hauv qab no:
Tensile zog Ntau dua los yog sib npaug rau 590 MPa, yog ib qho tseem ceeb qhia txog lub zog ntawm cov hlau.
Yield zog Ntau dua los yog sib npaug rau 500 MPa, sawv cev rau qhov siab tshaj plaws ntawm cov hlau thaum raug quab yuam.
Hardness HB250 ~ 350, hardness test method yog Rockwell hardness, Brinell hardness thiab Vickers hardness.
