This specification discusses standard requirements for ferritic/austenitic (duplex) stainless steel pipe that is electric fusion welded with addition of filler metal suitable for corrosive service. After welding, heat treatment must be performed in agreement with specific temperature and quench conditions. Several grades of ferritic/austenitic steel will conform to the requirements of the applicable specification and grade designation. Heat and product analyses must be conducted and must conform to the requirements for the particular grade. The plate used to make the pipe must have the required tensile properties. Mechanical tests including a transverse tension test, transverse guided-bend test, nondestructive test, hydrostatic tests, and a nondestructive electric tests must be performed.
- Note this data is for overview only. For full specification and current revisions, please contact ASTM.