A sheet is essentially a coil that has been flattened and cut into specific rectangular dimensions. Sheets are much easier to handle for smaller shops or manual fabrication. They are typically used when the finished product needs to be a specific size or when working with thicker gauges that are too rigid to be coiled easily.
A coil is a long, continuous strip of stainless steel that has been rolled into a tight, heavy cylinder.
Coils are designed for high-volume, automated manufacturing.
The finishes available are :
2B (Cold Rolled): A smooth, moderately reflective grey finish.
1D/1G (Hot Rolled): Rougher, dull finish.
#4 (Brushed/Satin): A linear polished finish with short, parallel grain lines.
#8 (Mirror): Highly polished, reflective, and bright finish.
These are available in a variety of Grades like 304, 304L, 316, 316L, 317L, 310, 321, 347, 202, 410, 430, etc.