Chemical composition of stainless steel; Weight of stainless steel products; Dimensional tolerance of stainless steel products; Application of tolerance class; Specific gravity (density) of stainless steel, etc. Chemical composition of stainless steel
Stainless steel is a special form of steel that is made of chromium added to steel. Regular steel is an alloy that is made of both iron and carbon. There are different types of stainless steel depending on how much chromium is added and if there are any other elements added in small amounts like nickel.
The chemical compositions for some commonly used austenitic, ferritic, martensitic, precipitation hardening and duplex stainless steels are provided in the following tables. When specifying stainless steel chemistry, it is important to reference the appropriate ASTM standard and the UNS (Unified Numbering System) number associated with the ...
Stainless steel is a metal alloy, made up of steel mixed with elements such as chromium, nickel, molybdenum, silicon, aluminum, carbon, etc. It is universally preferred for making kitchen utensils, because it does not affect the flavor of food and is easy to clean.
This grade has slightly lower mechanical properties than the standard 304 grade, but is still widely used thanks to its versatility. Like Type 304 stainless steel, it's commonly used in beer-brewing and wine-making, but also for purposes beyond the food industry such as in chemical containers, mining and construction.
316 / 316L are austenitic stainless steels that contain molybdenum, which increases their resistance to many chemical corrodents and marine environments. 316L is an extra low carbon version of 316 stainless steel. These materials are more resistant to general corrosion and pitting/crevices than conventional austenitic stainless steels. They also offer higher creep, stress-to-rupture and ...
The addition of molybdenum and a slightly higher nickel content make 316 Stainless Steel suitable for architectural applications in severe settings, from polluted marine environments to areas with sub-zero temperatures. Equipment in the chemical, food, paper, mining, pharmaceutical and petroleum industries often includes 316 Stainless Steel.
Indeed, steel is present in many things that people use every day. Understanding the chemical makeup of steel is useful when determining what sort of steel should be used, as well as in what application to use it. Because steel is a mixture rather than a chemical compound, it doesn't have a set chemical compound formula.
316 - Better corrosion resistance as well as higher strength at elevated temperatures than 304. Often used for pumps, valves, chemical equipment and marine applications. Most popular of stainless steels. 409 - Lowest cost stainless - used extensively in automotive exhaust systems. Excellent formability and weldability.
Stainless steel is available in many different alloys that incorporate several different elements, but the essential components are iron, carbon and chromium. Low-carbon steel with at least 12-percent chromium forms an even layer of protective oxide on its surface and is, therefore, stainless.