Sonic Steel is a leading manufacturer, supplier & exporter of Rolled Steel. Hot and cold rolled steel are different because of their processing methods. Steel heated and rolled at high temperatures is called hot rolled steel. In contrast, cold rolled steel is simply hot rolled steel that’s been through extra cold treatment steps. This involves cooling, then either annealing or tempers rolling. You can roll different grades and specifications of steel, either hot or cold. By knowing the Hot Rolled vs Cold Rolled Steel – Key Differences, you can choose the right type for your use.
What is Hot Rolled Steel
Hot Rolled Steel is made through a method called hot rolling. This takes place under high heat, usually more than 1700˚F. This heat is higher than steel’s recrystallization temperature, so it’s perfect for molding, shaping, and expanding the steel easily. Once it starts to cool, hot rolled steel often shrinks unevenly. This means the final size and shape can’t be controlled as well as with cold rolled steel.
What is Cold Rolled Steel
Cold rolled steel is essentially hot rolled steel, but with a little extra refinement. You see, cold rolled steel undergoes another round of processing, where it gets to cool off at a comfy room temperature and then gets annealed or temper rolled. The result? Steel that’s more dependable in terms of measurement accuracy and comes with a broader variety of smooth finishes. What’s more, it flexes an extra muscle, being about 20% stronger than its hot-rolled counterpart, thanks to its strength-hardening step.
Application of Hot Rolled Steel
Hot steel and cold steel vary in their cost. Hot steel usually costs less than cold steel. This is because it’s made without any pauses in the process and doesn’t need to be reheated like cold steel. We often use hot steel when the exact shape and size aren’t crucial.
Application of Cold Rolled Steel
Cold rolled steel is used in applications where tolerances, surface conditions, concentricity, and straightness are factors. Other applications include:
| Industry | Hot Rolled Steel Applications | Cold Rolled Steel Applications |
| Construction | Structural beams, columns, building frames, bridges and infrastructure components | Interior panels, light-gauge framing, door frames and precision-formed building components |
| Automotive | Chassis frames, structural components, wheels and heavy-duty automotive parts | Body panels, door panels, exterior panels and precision-formed automotive components |
| Manufacturing | Heavy machinery, industrial equipment, agricultural machinery and machine bases | Precision components, appliance housings, metal furniture and formed sheet-metal parts |
| Railway | Railway tracks, structural components, freight wagon frames and rail infrastructure | Interior panels, equipment enclosures and precision-formed railway components |
| Shipbuilding | Ship hull plates, decks, structural supports and offshore platform components | Interior panels, equipment housings and precision-fabricated marine components |
| Energy | Power plant structures, pipelines, wind turbine structural components and heavy equipment | Electrical enclosures, control cabinets and precision-fabricated equipment panels |
| Storage | Storage tanks, silos, heavy-duty containers and warehouse structural systems | Storage cabinets, shelving, drawers and light-gauge storage enclosures |
| General Fabrication | Industrial sheds, metal buildings, heavy brackets, support frames and workbenches | Office furniture, decorative panels, equipment covers and precision sheet-metal products |
For top-quality rolled steel products and expert advice, contact Sonic Steel at +91 992-096-4999 or email us at sales@sonicsteels.com. We are committed to meeting your steel needs with exceptional service at Wholesale price.
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