Sunday, October 29, 2017

Stainless Steel 316 and 304

In metallurgy, stainless steel, also known as inox steel or inox from French inoxydable, chromium contain in this steel minimum 10.5% make this steel is stand to corrode. All types of stainless steel resist attack from low acid, types 316 and 317 more so than 304 type. Stainless steel 304 only stand to high pH like in NaOH, in low pH this steel have bad stand. Stainless steel type 304 is purpose to build building construction or for support of piping line and many other use in Industry. All type of stainless steel are include of alloy steel, because this steel is composed by steel and other substances like chromium, nickel and other metal.

Stainless 316 say as standard of molybdenum bearing grade, the best choose after stainless steel 304 because of this price is more higher than 304, so stainless steel 316 become second important to 304 amongst the austenitic stainless steel. Molybdenum contain in the steel make stainless steel 316 have better overall corrosion resistance properties than grand of 304, especially if use in acidic surrounded environment, such as in Chemical Industries. But for general purposes that need stand to corrode you can choose just stainless steel 304.

Stainless steel 316 L have low carbon version of stainless 316 and more stand to corrode. This steel is extensively use in heavy gauge welded components (over about 6 mm). While stainless steel 316H have high carbon content, so it suitable for use in elevated temperature.

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