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 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.

MembersPatrick Markle ATI Allvac Eric Caldwell GATE, LLC

Adran Mills ATI Allvac Tim Haeberle GE Oil & Gas

Bill Bailey Baker Hughes Greg Chitwood Halliburton

Josh Rooker Bohler Edelstahl John Sisk Halliburton

Steven Shademan BP John Elwell Howco Group

Kevin Johnson Cameron Carl Stroud Latrobe Specialty Steel

Paul Maxwell Carpenter Kleber Sernik Latrobe Specialty Steel

Gus Mangaly Dril-Quip Rashmi Bhavsar Schlumberger

Al Gavenas Energy Alloys Brett Puckett Shell

Brian Wilfahrt ExxonMobil Steve Tassen Special Metals

Joel Russo FMC Marco Deuterio Special Quality Alloys

Stan Gregory Foroni Metals John Groth ThyssenKrupp VDM

Veronica Vasquez Foroni Metals William Howie Weatherford

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 number Material Designation

Minimum Hardness

HRC (HBW)

Maximum Hardness

HRC (HBW)

N07716 120K 30 40

140K 32 43

N07718 120K 32 (298) 40 (363)

  140K  34 40 (363)

N07725 120K 30 43

N09925a 110K 26 38

N09935 110K 26 34

N09945 130K 34 42

140K 34 42

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