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Stainless Steels

Source: | Updated: Jun 03, 2016

Stainless steels are selected accordance with their corrosion resistance. They have been used for almost more than 100 years cause their durability, appearance and cleanability. These things can be found in your home, prestigious buildings, transport, food and beverage handling, chemical plant and medical equipment.

Chromium is one of the essential elements of the stainless steels, which make it has the stainless characteristics, but most commonly the used grade is type 304, contains 8% nickel. Furthermore, it is one of a family of grades known as “austenitic”. They are feartured with good ductility as well as ease of forming and welding. Because it is mantian at very low temperatures, so they can selected for cryogenic applications. While some grades retain their properties to high temperatures as well. 

Nickel is an important alloying element in all the commercial grades of the duplex stainless steel family. These have higher strength than the common austenitic grades but cannot be used over such a wide temperature range. Nevertheless, they are finding increasing use in structural applications where strength is important.

Some grades within the other families of stainless steels - ferritic, martensitic and precipitation hardening - do contain a small percentage of nickel which enhances their properties.

Stainless steel is the largest single first use of nickel, accounting for 60.9% of nickel production in 2009. In the same period, 58.3% of the stainless steel which was melted were chromium-nickel austenitic grades.

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