Dooro 20Crmo, 42Crmo, 40CrNiMo agabka daawahaFoornaynta, makiinada, daaweynta kulaylka, qarxinta rasaasta, shiididda iyo hababka kale ee habaynta ayaa loo isticmaalaa si loo hagaajiyo caabbinta abrasion iyo saamaynta caabbinta alaabta, iyo kordhinta nolosha adeegga alaabta.