Stainless steel is increasingly favored for its corrosion resistance and durability. How do stainless-steel photovoltaic bolts differ from iron-based bolts? Both ironmaking and steelmaking rely on reduction and oxidation reactions, but they serve different purposes: ironmaking reduces iron from ore, while steelmaking removes excess carbon and other impurities from pig iron. Iron-carbon alloys containing less than 2% carbon are classified as steel, while those containing more than 2% are classified as cast iron; from a metallurgical perspective, “stainless iron” is not a standard material designation. Steel is widely used because it combines toughness, elasticity and rigidity. Although buyers often judge stainless steel by whether it rusts or is attracted to a magnet, chromium is the principal element governing corrosion resistance. When chromium content exceeds 10.5%, a protective oxide film forms on the surface and helps prevent further corrosion.
Stainless steel is increasingly favored for its corrosion resistance and durability. This article explains the key differences between stainless-steel photovoltaic bolts and iron-based bolts.
