• January 24th 2024


In the diverse realm of stainless steel alloys, the 321 grade is a symbol of harmony, balancing corrosion resistance and high-temperature durability. This essay embarks on a journey to explore the intricacies of the 321 stainless steel coil, shedding light on the array of surface finishes available, delving into both hot and cold rolling processes, examining pricing considerations, and emphasizing the crucial role played by Chinese manufacturers in crafting 321 stainless steel coils.

Introduction to 321 Stainless Steel Coil

Composition and Characteristics:
The 321 stainless steel alloy, enriched with titanium, offers exceptional corrosion resistance and stability at elevated temperatures.
Renowned for its suitability in applications involving heat exchangers, aircraft components, and various industrial settings.

Read More: 321 Stainless Steel

Surface Finish Types of Stainless Steel Coil 321

a. 2B Finish:

  • A standard finish providing a smooth, reflective surface suitable for diverse applications.
  • The 2B finish balances functionality with an aesthetic appeal, making it versatile across industries.

b. No. 1 Finish:

  • Achieved through hot rolling, this finish results in a rough surface, prioritizing mechanical properties over appearance.
  • Often chosen for applications where strength is a critical requirement.

c. BA (Bright Annealed) Finish:

  • Controlled annealing produces a bright, reflective surface, ideal for decorative purposes.
  • The BA finish enhances the visual appeal of 321 stainless steel, making it suitable for architectural and design applications.

d. No. 4 Finish:

  • Created through polishing, it yields a uniform matte appearance with a linear grain pattern.
  • The No. 4 finish is ideal for applications requiring a visually pleasing yet non-reflective surface.

e. 8K/Mirror Finish:

  • An advanced polishing process results in a highly reflective, mirror-like surface.
  • This finish is often chosen for high-end applications where a flawless appearance is paramount.

321 Hot Rolled Stainless Steel Coil

  • Involves heating the steel above its recrystallization temperature, resulting in a scaled surface.
  • The hot-rolled 321 stainless steel coil exhibits enhanced strength, making it suitable for structural and heavy-duty applications.

321 Cold Rolled Stainless Steel Coil

  • Achieved through compression at room temperature, this process produces a smooth surface with improved dimensional accuracy.
  • Ideal for applications requiring tight tolerances and a polished appearance.

Read More: Hot Rolled vs Cold Rolled Stainless Steel Coil

321 Stainless Steel Coil Price

  • Influenced by factors such as raw material costs, production techniques, and market demand.
  • A nuanced understanding of pricing dynamics is crucial for stakeholders to make informed decisions.

Chinese Manufacturers of 321 Stainless Steel Coil

China, a global manufacturing hub, hosts specialized manufacturers of 321 stainless steel coils.
These manufacturers contribute significantly to the industry, providing high-quality products that meet international standards and cater to a diverse range of applications.

Read More: 6 Stainless Steel Manufacturers in China


In conclusion, the 321 stainless steel coil emerges as a symbol of balance, seamlessly integrating corrosion resistance with high-temperature stability. The variety of surface finishes and fabrication processes enhance its adaptability across industries. China's role as a leading manufacturer of 321 stainless steel coils underscores the global impact of this alloy in meeting the demanding needs of modern engineering. As industries progress, the 321 grade continues to be a vital player in shaping the landscape of stainless steel applications on a global scale.

Qinghe Steel stocks a wide range of stainless steel coil sizes for your specific project needs. We offer quick delivery throughout the world. Contact us today to discuss stainless steel coil for your project needs.

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