The use of rotary expansion technology to accomplish solid (non-slotted or perforated wall) tubular expansion goals has been recently been introduced to the Oil and Gas Industry. This rotary expansion technology is contrasted with the fixed cone technique. The effects of compliant versus non-compliant rotary techniques on potential applications are addressed. The effects of the expansion process on mechanical properties and corrosion resistance are presented. Reported results that characterize process effects include full size product performance tests, corrosion rate tests and sulfide stress corrosion cracking tests. The concept of "safe selection criteria" is introduced that ensures successful expansion projects and final product properties.