Centrifugal cast duplex stainless steels are being increasingly used in demanding services needing both higher strength and improved corrosion resistance over regular austenitic materials. Although the process of centrifugal casting dates back to the early 1800s, other technologies restricted its industrial application to the casting of simple rings and cylinders.

New applications require operating temperatures beyond the range of existing published data. Data collected from several years of duplex stainless steel production heats of 5 commonly cast centrifugal alloys are made available to address this need. Mechanical properties have been collected for these grades following 100 hours exposures to various operating temperatures. These are compared to acceptance criteria established for commonly referred industrial specifications.

A further consideration is the effect of test specimen orientation on mechanical properties such as room temperature tensile strength and elongation, and impact properties. This work examines property data in radial and tangential grain orientations in a thick-walled cast duplex alloy casting.