Codsiga:
Daabkan waxaa lagu rakibay mishiinka xiiraya, xiirid gaantry iyo qalab kale, xiira dhumucyada kala duwan ee birta, birta, birta qashinka, iwm.
Waxyaabaha :9CrSi, Cr12MoV, H13, 55SiCr, iwm.
Advantage:
① Qalabaynta mashiinka wax lagu shiido-sare ee saxda ah, xakamaynta saxda ah ee dulqaadka alaabta.
②Daawaynta kulaylka tayada sare leh iyo habka heerkulka, xakamaynta saxda ah ee adkaanta alaabta.