S32168 stainless steel types, standards and performance introduction

S32168 stainless steel types, standards and performance introduction
S32168 is a unified digital code for Chinese materials. The grade of S32168 is 06Cr18Ni11Ti, and the old national standard grade is 0Cr18Ni10Ti. It is equivalent to ASTM American standard grade material 321.
S32168 is a Chinese material, and its grade is 06Cr18Ni11Ti. The ASTM American standard grade material is S32100 or 321, and the old national standard grade is: 1Cr18Ni9Ti. Stainless steel is the abbreviation of stainless acid-resistant steel. Steel that is resistant to weak corrosive media such as air, steam, and water or has stainless properties is called stainless steel; and the 
international common name for chemical corrosion-resistant S32168 is: 06Cr18Ni11Ti, 0Cr18Ni10Ti, S32168, 321, SUS 321, STS 321, S32100, X6CrNiTi 18-10, X6CrNiTi 18-10, X10CrNiTi 18-9, 1.4541, Z6CNT 18-10, X6CrNiTi 18-10, 09Х18Н10Т, Х18Н10Т, 2337, 321S12, 321S31;
S32168 implementation standards: GB /T 20878-2007, GB /T -2012、GB /T 1221-2007、GB /T 4232-2019、GB /T 4238-2015、GB /T 3280-2015、GB /T 4237-2015、GB /T 14975-2012、GB /T 12770-2012、GB /T 14976-2012、GB /T 4356-2016、GB /T 1220-2007、GB /T 12770-2012、GB /T 12771-2019、GB /T 4240-2019；
S32168 austenitic stainless steel has good corrosion resistance in the atmosphere and is widely used in industries such as petrochemicals, electricity, bridges and automobiles. However, the "stainlessness" of stainless steel is not absolute. Due to the special service environment, stainless steel will also corrode. Factors such as medium concentration, pH value, and temperature will have a great impact on the corrosion resistance of stainless steel. For example, if stainless steel is used for a long time in the sensitization temperature range of 450~850℃, intergranular corrosion will occur. The mechanism is that C combines with Cr at the grain boundary to form Cr23C6 and precipitate, which reduces the Cr content at the grain boundary. This is the so-called "chromium depletion". The Cr element is one of the main elements that inhibit intergranular corrosion. When the Cr content at the grain boundary is less than 12%, the probability of intergranular corrosion will increase.
S32168 application areas include: oil and gas industry equipment; offshore platforms, heat exchangers, underwater equipment, fire-fighting equipment; chemical processing industry, container and pipeline industry; desalination, high-pressure RO equipment and submarine pipelines; energy industry such as power plant desulfurization and denitrification FGD systems, industrial scrubbing systems, absorption towers; mechanical parts (high-strength, corrosion-resistant, wear-resistant parts).