What Is Stainless Steel?
What you need to know for the right grade and surface choice — short and to the point.
Stainless steel is a steel alloy that, thanks to the chromium (Cr) in its composition, forms a thin, invisible chromium oxide layer on its surface. Even if this layer is scratched or worn away, it repairs itself on contact with oxygen — this is the real mechanism that makes stainless steel "stainless."
To be considered standard stainless steel, the alloy must contain at least 10.5% chromium; in 300 series (austenitic) grades, this ratio is typically 16-26%, combined with nickel.
Surface Types
Matte, Standard
Cold-rolled, slightly reflective matte finish — also known in the market as "cold finish." The most common and economical standard.
Hot-Rolled
Known in the market as "hot finish." A matte, rough natural surface formed after hot rolling, typically seen on thicker plates.
Bright Annealed
A mirror-like bright surface (Bright Annealed). Preferred for decorative applications and those requiring hygiene.
Satin / Brushed
A unidirectionally brushed, semi-matte texture. Common in kitchen equipment and architectural applications.
Mirror
The highest gloss level, a mirror-polished surface. For decorative and reflective applications.
Grade Families
Austenitic
The most common family — contains chromium + nickel, non-magnetic, high corrosion resistance.
Ferritic
Nickel-free, more economical, slightly magnetic. Decorative and general-purpose use.
Martensitic
Hardenable structure, magnetic. Cutting-tool and mechanical part applications.
Austenitic-Ferritic
A mix of both structures — high strength and superior resistance to chloride/pitting corrosion.
Which grade is right for you?
Browse all grades in stock and their technical specifications.