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

2. 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

3. 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

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

5. 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

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

7. End Of Presentation