What is the material of s3 1608?

Stainless steel. The unified digital code in China is S3 1608, and the national standard is GB/T 20878-2007. It has a low carbon content and contains some molybdenum. Stainless steel is divided into cast tool steel, cast special steel and cast alloy steel according to its application characteristics. Almost all industrial sectors need to use stainless steel, especially in construction machinery, engineering machinery, mining machinery, aviation and aerospace equipment, oil wells and chemical equipment. S3 1608 has a wide hardness range in the chemical industry because of its strong corrosion resistance, and can also be used in the field of electromagnetic valves.