API 6A718 Work Group on Addition of Nickel Base CRAs API SC6 Winter 2012 Meeting Paul Maxwell
Objective Provide requirements for Age Hardened Nickel Base alloys used in the manufacture of API 6A or ISO 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.
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
Meetings September 27, 2011 November 29, 2011
Progress
Chemical Compositions
Manufacturing Requirements
Heat Treatment Procedures
Macro & Micro Etchants
Tensile Requirements
Impact Toughness Requirements
Table 5 - Hardness Requirements UNS numberMaterial Designation Minimum Hardness HRC (HBW) Maximum Hardness HRC (HBW) N K K3243 N K32 (298)40 (363) 140K (363) N K3043 N09925 a 110K2638 N K2634 N K K3442 Hardness Requirements
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
Next Meeting Anticipated to be in April