A53 bututun ƙarfe maras sumul abu ne na bututun ƙarfe na Amurka, wanda a53-a daidai yake da ƙarfe 10 # na gida, a53-b daidai yake da ƙarfe 20# na gida, kuma a53-f daidai yake da kayan Q235 na gida.
Non gami karfe ana daukarsa a matsayin talakawa tsarin karfe, wanda aka yafi halin tensile ƙarfi da yawan amfanin ƙasa batu.
16Mn ƙananan ƙarfe ne mai ƙarfi mai ƙarfi mai ƙarfi: abun ciki na carbon shine 0.1% - 0.25%, kuma ana ƙara manyan abubuwan gami da manganese, silicon, vanadium, niobium da titanium; Jimlar abun ciki na gami bai wuce 3% ba.
35CrMo shine lambar ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙarfe na tsarin ƙarfe (alloy quenched da ƙarancin ƙarfe), wanda galibi ana amfani dashi don kera mahimman sassa a cikin injunan daban-daban waɗanda ke ɗaukar tasiri, lankwasa da torsion da babban kaya.
30CrMo gami karfe bututu yana da carbon abun ciki na 0.26 ~ 0.34, silicon abun ciki na 0.17 ~ 0.37, manganese abun ciki na 0.40 ~ 0.70, molybdenum abun ciki na 0.15 ~ 0.25, chromium abun ciki na 0.80 ~ 1.10.
Na kowa karfe maki na Turai misali sumul karfe bututu ne P195, p235, p265, p195gh, p235gh, P265GH, 13crmo4-5 da kuma 10crmo9-10.
An fadada filin aikace-aikacen 12Cr1MoVG gami da bututu don samar da sararin samaniya don haɓaka masana'antu.
Manufar 42CrMo sumul karfe bututu: musamman karfe ga gada ne "42CrMo", da musamman karfe ga mota girder ne "42CrMo", da kuma musamman karfe jirgin ruwa jirgin ruwa ne "42CrMo".