Carry Over From API SC6 Winter Meeting API Standard 6A718 Inclusion of Additional Alloys Tim Haeberle 30 June 2011

Inclusion of Additional Alloys Background API Standard 6A718, 1st and 2nd Editions, have included only one alloy: Alloy 718 Other high strength nickel base alloys are used for API Spec 6A equipment as well as down hole safety valves and other equipment There is a concern that the other high strength nickel base alloys do not have industry standard requirements for processing, microstructure, macrostructure, and mechanical properties There is a concern these alloys may be subject to precipitation of detrimental secondary phases and field cracking problems as had been experienced with Alloy 718 prior to the issuance of API Standard 6A718

Inclusion Of Additional Alloys Background – Continued Some of the alternate alloys being used are: Alloy 925 Alloy 935 Alloy 945 Alloy 625 Plus Alloy 625M Alloy 725 Contributing to the concern is the fact that the patents on these alloys have started to expire, and this means that mills around the world, regardless of nickel alloy processing experience, may decide to start melting and selling these alloys

Inclusion of Additional Alloys This is a more complex task than the inclusion of additional strength classes!

Inclusion of Additional Alloys Proposal: Establish a small Work Group for “Inclusion of Additional Alloys” Chairman - Paul Maxwell, Carpenter Technology Alloy manufacturers & suppliers (Special Metals, Foroni, etc.) Equipment manufacturers using the alternate alloys End users Work Group Objectives: First, work with API staff to determine if patented alloys can be included in an API standard Second, work with API staff to determine if API Standard 6A718 should be expanded, or if a new standard should be developed for each alloy Define the processing & testing required for each of the alternate alloys Propose detailed qualification requirements for evaluating the alternates Solicit test data for qualification of the alternate alloys

API CSOEM SR3 Form Form ready for submittal Requesting $100,000

End Of Presentation