Stainless steel is a strong and versatile iron-based alloy that comprises at least 10.5% chromium. Having chromium also makes this group of alloys highly corrosion-resistant. The secret to this high corrosion resistance is the formation of a thin layer popularly known as the “passive layer.”
For an alloy to qualify as stainless steel, it also has to contain up to 1.2% carbon. Other elements that stainless steel can carry include titanium, molybdenum, nickel, silicon, and nitrogen. Notably, stainless steel is a blend of contains metals and several elements. This is the main reason this metal presents different properties.
The development of this blend of metals and elements is attributed to the Englishman Harry Brearley in 1913. Upon this discovery and the new popularity of cutlery from Sheffield, the application of this alloy would soon reach global scales.
Even today, the demand for stainless steel is still increasing – an annual rate of 5% according to some estimates. These alloy grades may be relatively expensive, but they have some attractive characteristics. To add to the alloy’s corrosion resistance and strength, stainless steel grades have a modern appearance and are easy to maintain.