The main difference between hot and cold rolled steelcold rolled steelThe first Allowable Stress Design (ASD) Specification was based on the research work sponsored by AISI at Cornell University under the direction of late Professor George Winter [2] since 1939. As a result of this work, George Winter is now considered the grandfather of cold-formed steel design.
› wiki › Cold-formed_steelCold-formed steel - Wikipedia is in how they are processed. Hot rolled steel is steel that has been rolled at high temperatures, while cold rolled steel is essentially hot rolled steel that is further processed in cold reduction materials.