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What are the primary applications of Hot Rolled vs. Cold Rolled steel coils?
Rolling steel into coils allows for precise thickness control and specific material properties, with applications defined by the temperature of the rolling process:
Hot Rolled Coils: Processed at temperatures exceeding 1000°F, this steel undergoes recrystallization, making it highly malleable and cost-effective. It is the preferred choice for heavy infrastructure and structural projects where scale and toughness are prioritized over aesthetic perfection. Common uses include I-beams, railroad tracks, automotive frames, metal buildings, and agricultural equipment.
Cold Rolled Coils: Processed at room temperature, this steel avoids the warping associated with cooling. It is 20% stronger due to strain hardening and features a smooth, oily finish. These coils are essential for precision manufacturing and consumer-facing products, such as home appliances, aerospace components, medical equipment, electrical hardware, and high-end automotive parts.
Hot rolled coils provide the durable "skeleton" for large-scale construction, while cold rolled coils deliver the strength and refined finish required for technical precision and everyday technology.
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