AISI/SAE 1060 is a high-carbon plain carbon steel with carbon content in the 0.55–0.65% range and manganese around 0.60–0.90%. That extra step up in carbon compared with 1055 continues the same trend: more strength and hardness potential through heat treatment, at the cost of somewhat lower ductility and toughness in the finished part. It's still a straightforward plain carbon composition with no significant chromium, nickel, or molybdenum additions, so its properties come almost entirely from carbon content and how the steel is heat treated afterward.

1060 is a common choice for flat and coil springs, tillage and agricultural tool components, high-strength wire, and impact-resistant hand tools, since it can be through-hardened to a useful working hardness while remaining tough enough for cyclic loading in spring applications. It also sees use in construction fasteners and general wear parts where a moderate hardness increase over mild steel is needed but the higher alloy cost of a chrome-moly grade isn't justified. Like other plain high-carbon grades, it's typically supplied hot-rolled or cold-drawn and heat treated by the end user or fabricator to the hardness the application calls for.

At 0.55–0.65% carbon, 1060 machines noticeably harder than 1055 and requires more attention to tooling selection and cutting parameters. The higher carbon content raises the material's inherent hardness and shear strength even in the annealed state, which pushes cutting forces and edge temperatures higher across turning, milling, and drilling operations. Flank wear tends to progress faster than on lower-carbon grades, so tool life planning should account for shorter intervals between edge changes, especially when working stock that has already been cold drawn or partially hardened.

Chip control is a real consideration on this grade since it lacks any sulfur or lead addition to help fracture the chip — expect continuous chips in softer conditions that need a properly matched chipbreaker geometry to stay manageable. Because the material doesn't carry chromium or molybdenum to add hot hardness, heat generated at the cutting edge is a bigger factor in wear than pure abrasion, so coated grades that resist thermal softening perform noticeably better than uncoated tooling once cutting speeds climb. Steady feed rates, rigid workholding, and adequate coolant all help keep both tool wear and part finish under control on this higher-carbon material.