In addition, any steel that requires alloying elements (like 41, for example) are not carbon steels. It’s Iron with some carbon, and limited alloying elements. These steels, while not satisfying the technical requirements of carbon steel, signify the greater divide in steel: stainless steel vs everything else.Ĭarbon Steel vs Stainless Steel (by definition)Ĭarbon steel by definition is extremely simple. Unlike carbon steels, low-alloy steels can contain small quantities of a wide variety of alloying elements, allowing them to be customized for a wider variety of applications. In addition to the precise definition, the term carbon steel is also used to refer to the broad group of alloy steels that are not stainless steels. The amount of carbon can vary and there are a few acceptable alloying materials, but these steels are simple. The technical definition, while complex, boils down to one simple constraint - true carbon steels must have almost no alloying elements, making them primarily comprised of two materials: iron and carbon. 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.When the specified minimum for copper does not exceed 0.40 per cent. No minimum content is specified or required for chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, or zirconium, or any other element to be added to obtain a desired alloying effect.The technical definition is very clear: According to the American Iron and Steel Institute (AISI), a steel must meet the following standards to match the technical definition of carbon steel: “Carbon steel” has two meanings - a technical definition and a more general classification.
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