AISI 4135 Composition, Low alloy steel (4100 Series, Cr-Mo Alloyed, 0.35% C ) C (carbon) 0.33 – 0.38 % Cr (chromium) 0.8 – 1.1 % Fe (iron) 96.9 – 97.9 % Mn (manganese) 0.7 – 0.9 % Mo (molybdenum) 0.15 – 0.25 % P (phosphorus) 0 – 0.035 % S (sulfur) 0 – 0.04 % … Continue reading AISI 4135 Composition, Low alloy steel (4100 Series, Cr-Mo Alloyed, 0.35% C )