Basic Mechanical Properties of Duplex Stainless Steel Bars

Alloys made of duplex stainless steel are extremely corrosion resistant and work hardenable. There is a mixture of austenite and ferrite phases in their microstructures. The result is that stainless steels made from duplex alloys have properties characteristic of both austenitic and ferritic materials. A combination of properties like these can lead to some compromises when compared with grades that are pure austenitic or pure ferritic. Stainless steels made from duplex types tend to be tougher than those made from ferritic types. It is possible for duplex stainless steels to possess a strength twice that of austenitic stainless steels in some cases. In spite of the fact that duplex stainless steel is considered to be resistant to stress corrosion cracking, it is not as resistant as ferritic stainless steel. While Duplex stainless steel is the least corrosion resistant of stainless steels, its corrosion resistance is greater than the most commonly used grades of stainless steel, 304 an...