Carbon steel is
steel in which the main interstitial
alloying constituent is
carbon in the range of 0.12–2.0%. The
American Iron and Steel Institute (AISI) definition says:
- Steel is considered to be carbon steel
- when no minimum content is specified or required for chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect;
when the specified minimum for copper does not exceed 0.40 percent;
or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60.