1.5*1.0 Inch Stainless Steel Metal Pipe SS316 6M Rectangular Tube

1.5*1.0 Inch Stainless Steel Metal Pipe SS316 6M Rectangular Tube

Duplex Stainless Steel

Duplex stainless steel is a family of stainless steel that is made of austenitic steel and ferritic steel in nearly equal proportions. This type of stainless steel is both stronger and more resistant to corrosion than your typical types of stainless steel. Duplex stainless steel is also more ductile than ferritic grades, however, it is not quite as ductile as the austenitic grades.

One of the main differences in the composition is that duplex stainless steel is made with a higher chromium content and a lower nickel content. This not only makes the material stronger, but it also provides cost benefits. For these reasons, duplex stainless steel is often used in applications like pipes and risers in offshore oil rigs.

Grades of Duplex Stainless Steel

Just as with the other types of stainless steel, duplex stainless steel is also broken down into different grades or groups. The three primary groups are based on the pitting and the corrosion resistance of the material.

Standard Duplex Steel

Standard duplex steel has a PREN range of 28-38. This is the most typical type of duplex steel used today. It is also sometimes called Grade EN 1.4462 or 2205.

Stainless Steel Metal Pipe Specification