1. API 6A718 Work Group on Addition of Nickel Base CRAs API SC6 Winter 2012 Meeting Paul Maxwell

2. Objective Provide requirements for Age Hardened Nickel Base alloys used in the manufacture of API 6A or ISO 10423 pressure-containing and pressure- controlling components to assure they are not embrittled by the presence of an excessive level of deleterious phases and meet minimum metallurgical quality requirements. These additional requirements include detailed process control requirements and detailed testing requirements.

3. Members Patrick MarkleATI AllvacEric CaldwellGATE, LLC Adran MillsATI AllvacTim HaeberleGE Oil & Gas Bill BaileyBaker HughesGreg ChitwoodHalliburton Josh RookerBohler EdelstahlJohn SiskHalliburton Steven ShademanBPJohn ElwellHowco Group Kevin JohnsonCameronCarl StroudLatrobe Specialty Steel Paul MaxwellCarpenterKleber SernikLatrobe Specialty Steel Gus MangalyDril-QuipRashmi BhavsarSchlumberger Al GavenasEnergy AlloysBrett PuckettShell Brian WilfahrtExxonMobilSteve TassenSpecial Metals Joel RussoFMCMarco DeuterioSpecial Quality Alloys Stan GregoryForoni MetalsJohn GrothThyssenKrupp VDM Veronica VasquezForoni MetalsWilliam HowieWeatherford

4. Meetings September 27, 2011 November 29, 2011

5. Progress

6. Chemical Compositions

7. Manufacturing Requirements

8. Heat Treatment Procedures

9. Macro & Micro Etchants

10. Tensile Requirements

11. Impact Toughness Requirements

12. Table 5 - Hardness Requirements UNS numberMaterial Designation Minimum Hardness HRC (HBW) Maximum Hardness HRC (HBW) N07716120K3040 140K3243 N07718120K32 (298)40 (363) 140K 34 40 (363) N07725120K3043 N09925 a 110K2638 N09935110K2634 N09945130K3442 140K3442 Hardness Requirements

13. To Be Done Review of Chemistries, Heat Treat Procedures and Mechanical Properties Decide Whether Mechanical Property Requirements Need to be Size Dependant Develop an Appropriate Hardness Conversion Table Develop Grain Size & Microstructure Requirements including Photomicrographs for Reference Determine Whether Additional Testing will be Required for High Strength 718

14. Next Meeting Anticipated to be in April