Cov pa roj carbon steel yog cov hlau carbon hlau nrog cov ntsiab lus ntawm 0.0218% ~ 2.11%. Kuj hu ua carbon steel. Feem ntau, nws kuj muaj me me ntawm silicon, manganese, sulfur thiab phosphorus. Feem ntau, qhov siab dua cov ntsiab lus ntawm cov pa roj carbon steel, qhov hardness thiab lub zog ntau dua, tab sis cov yas qis dua
