Categories:Metal;Ferrous Metal;Alloy Steel;AISI 4000 Series Steel;Low Alloy Steel;Carbon Steel;Medium Carbon Steel Material Notes:Medium-carbon steel with high hardenability and good fatigue, abrasion and impact resistance. Key Words:AFNOR 40 CD 4, AFNOR 42 CD 4 (France), ASTM A322, ASTM A331...