The following are some of the key differences in hot rolled vs cold rolled steel:

SAE steel grades
Carbon steels and alloy steels are designated a four digit number, whereby the first digit indicates the main alloying elements, the second digit indicates top grade elements, and the last two digits indicate the amount of carbon, in % of weight. For example, a 1060 steel is a plain-carbon steel containing 0.60 wt% C.