While I completely agree with what Jack wrote. I urge you to be careful. Be sure you understand what your customer requires. Some will say you have to peen to the longer of the time to reach coverage/saturation.
I think Jack will agree with me that this is one of if not the most misunderstood part of the shot peening process.

Walter A. Beach
Vice President
Peening Technologies
PO Box 280306
8 Eastern Park Road
East Hartford, CT 06128

860-289-4328 ex. 3
860-289-2134 fax
www.peentech.com