Carbon and Low Alloy Steels

Carbon and low alloy steels are the workhorses of the mechanical world. No other class of materials offers as wide a range of mechanical properties as economically. Carbon steels are alloys of iron, carbon, manganese, and silicon.

Low alloy steels are similar to carbon steels but have additional alloying elements like chromium, molybdenum, etc., to improve their heat treat response. With heat treating, ultimate strengths from about 60 – 300 ksi are possible within this group of materials. Utilizing specialized heat treating processes, it is possible to engineer parts with specific properties in different areas of the same part. An example of this would be first heat treating the casting to a very tough condition for impact resistance, then applying a second surface hardening heat treatment to make the surface wear resistant.

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