Khoom siv, raw khoom, riam, yog qhov kev xaiv zoo tshaj plaws ntawm kev xaiv cov khoom siv.
Chopper xaiv tsis yog tsuas yog ob tus qauv, xeb thiab ntse.
Feem ntau cov pa roj carbon ntau dua, qhov siab dua qhov hardness, sharpness, zoo dua khaws cia, tab sis xeb kuj txo.
Kev txhim kho ntawm alloy ntxiv MoV yog zoo xeb kuj