![]() These steels are strong the aircraft industry uses some grades of the 600 series. The 650 through 665 versions are austenitic. ![]() The 601 through 619 versions are martensitic, while 630 through 635 are both semiaustenitic and martensitic. Manufacturers make the 600 series of stainless steel in both martensitic and austenitic. These grades are approximately 17-percent chrome and approximately 4- to 7-percent nickel. Martensitic stainless steels aren’t as corrosion resistant as the austenitic types. The welds will deteriorate as the carbon content increases. This provides high strength and high wear resistance. The 400 series of stainless steels have a martensitic crystalline structure that has higher carbon content. 316 steel’s resistance to chemicals and marine environments. 304 stainless steel is widely used because it is durable and easy to form into various forms such as stainless steel sheet, stainless steel plate, stainless steel bar, and stainless steel tube. Heat-treating will harden the 400 series. As the most common grade of stainless steel, 304 is considered the standard 18/8 stainless. The 400 series is susceptible to rust and corrosion under some conditions. ![]() This group of stainless steels has an addition of 11 percent chromium and 1-percent manganese. Tableware, cooking utensils, food processing equipment, food preparation and mild chemical applications use this stainless steel. Both have the same general characteristics of the 300 series. The 304 grade is the most commonly used stainless steel, and the 316 grade is the second most common. This is an austenitic stainless steel, so it is easier to weld than some other stainless steels. These steels aren’t attracted to magnets. 304 stainless steel contains chromium-nickel content and low carbon. 304 Stainless Steel 304 stainless steel contains a minimum of 18 chromium and 8 nickel which gives its alternate name 18/8 stainless steel. ![]() Stainless steel with this mix uses 18-8 as its name as well as the 300-series number. While 303 stainless steel still has strong corrosion resistance, for an added boost, 304 stainless steel is recommended. (Cb + Ta) 8×C ≥, 1.00 ≤, Ta 0.10, Co 0.The 300 series has 18-percent chromium and 8-percent nickel added to the steel. Sponsored Links For full table - rotate the screen USA Russia Sweden European Union W.N. Stainless Steel Chemical Composition Chart, Percentage (%) Comparing international stainless steel standards from America (US), France, Germany, Italy, Japan, Russia, Spain, Sweden, England (UK) and the European Union. Note: Maximum “ ≤“, unless range (Min-Max) or minimum (≥) is indicated. The following table lists the chemical composition of stainless steel alloys, including austenitic SS 304, 304L 316, 316L, 321, 303, 302, 301, 904L, 201, etc., martensitic SS 440A, 440B, 440C, 420 etc., ferritic SS 430, duplex stainless steel 2205, 2507, 329, etc. Therefore, stainless steel metal generally has a Chromium content of minimum 10.5%. Only when the Cr percentage composition reaches a certain value, the steel has corrosion resistance. The elemental chemical composition of stainless steel is mainly composed of Ferrum (Fe) and Chromium (Cr), other alloy elements in the chemical composition also include Carbon (C), Silicon (Si), Manganese (Mn), Phosphorus (P), Sulfur (S), Nickel (Ni), Molybdenum (Mo), Titanium (Ti), Nitrogen (N), and Cuprum (Cu), etc. All 300 series stainless steel share the ratio of chromium to nickel with varying other elements improving different properties. It's strength has a range from the middle to low end of the grade scale. Stainless Steel Chemical Composition Chart 18-8 A general designation for the most common and popular stainless steel, (300 Series) referring to the 18 chromium and 8 nickel. ![]()
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