The main disadvantages of hot-rolled steel are reflected in surface quality,
dimensional accuracy, and mechanical properties:
Rough surface
During the high-temperature rolling process, the steel surface easily oxidizes, forming scale, resulting in a rough and poorly finished surface.
Low dimensional accuracy
Due to thermal expansion and contraction and cross-sectional temperature differences, dimensional tolerances are large (±0.1 to ±2.5 mm), making it difficult to meet high-precision requirements.
Weak mechanical properties
Granular grains result in yield strength typically 10 to 20% lower than cold-rolled steel. Residual stresses also exist, potentially causing deformation or cracking.
Of course, if you require large-scale sheet metal fabrication, you can partner with Mulan Group. With 12 years of experience in sheet metal fabrication, Mulan Group has helped clients in over 30 countries complete sheet metal fabrication tasks, such as sheet metal cabinets, sheet metal enclosures, process chassis, metal brackets, and various other sheet metal components, and has received consistent praise. We look forward to your consultation and cooperation.
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