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Classification of Stainless Steels
Stainless steels are commonly grouped into: martensitic stainless steels, ferritic stainless steels, austenitic stainless steels, duplex (ferritic-austenitic) stainless steels, and precipitation-hardening stainless steels. Stainless steels are in general grouped into ◆ Martensitic stainless steels ◆ Ferritic stainless steels ◆ Austenitic stainless steels ◆ Duplex (ferritic-austenitic) stainless steels
◆ Precipitation-hardening stainless steels Alloying metallic elements added during the making of the steel increase corrosion resistance, hardness, or strength. The metals used most commonly as alloying elements in stainless steel include chromium, nickel, and molybdenum.
Stainless steels are available in the form of ◆ plate ◆ sheet ◆ strip ◆ foil ◆ bar ◆ wire ◆ pipes ◆ tubes
Includes hot rolled and clod rolled finsh. Generally specking stainless steel pipe and tubing including welded stainless steel tube and seamless stainless steel pipe,and according to material to classify have 201 stainless tubing,304 stainless steel pipe,3014L stainless steel pipe ,316 & 316L stainless steel pipe, simply saying also have ss tube, ss pipe, ss tubing,ss piping etc..Stainless steels are a iron-based alloy containing at between 10.5% to 30% Cr. Stainless steel achieve its stainless characteristic through the formation of an invisible and adherent chromium-rich oxide surface film. Other alloying elements added to improve the characteristics of the stainless steel include nickel, molybdenum, copper, titanium, aluminum, silicon, niobium, nitrogen, sulphur, and selenium. Carbon is normally in amounts from 0.03% to more than 1.0% in some martensitic grades.Selection of stainless steels are in general based on ◆ corrosion resistance ◆ fabrication characteristics ◆ availability ◆ mechanical properties for specific temperature ranges product cost Since stainless steel resists corrosion, maintains its strength at high temperatures, and is easily maintained, it is widely used in items such as automotive and food processing products, as well as medical and health equipment. The most common US grades of stainless steel are: TYPE 304 The most commonly specified austenitic (chromium-nickel stainless class) stainless steel, accounting for more than half of the stainless steel produced in the world. This grade withstands ordinary corrosion in architecture, is durable in typical food processing environments, and resists most chemicals. Type 304 is available in virtually all product forms and finishes.and also it is used popular the material type is low than 304 grade like 201,202,301 stainless steel type.mainly for making stainless steel welded tube and stainless steel sheet,stainless steel welded pipe used to decorative purpose,mechanical prupose,furniture making and buidling decoration and structure。 TYPE 316 Austenitic (chromium-nickel stainless class) stainless steel containing 2%-3% molybdenum (whereas 304 has none). The inclusion of molybdenum gives 316 greater resistance to various forms of deterioration.TYPE 409 Ferritic (plain chromium stainless category) stainless steel suitable for high temperatures. This grade has the lowest chromium content of all stainless steels and thus is the least expensive.TYPE 410 The most widely used martensitic (plain chromium stainless class with exceptional strength) stainless steel, featuring the high level of strength conferred by the martensitics. It is a low-cost, heat-treatable grade suitable for non-severe corrosion applications.TYPE 430 The most widely used ferritic (plain chromium stainless category) stainless steel, offering general-purpose corrosion resistance, often in decorative applications.In chinese stainless steel pipe manufacturer very big requirement in 201 202 304 316 pipe, stainless steel pipe 304，stainless steel tubing 201，welded stainless steel pipe and stainless steel tube,as well as they provide stainless steel tubing sizes,stainless steel pipe prices and stainless stee pipe sizes.
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