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Statistics to Compare Alloy 718 Properties from Additive Manufactured and Newer Mill-Produced Bar Stocks

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Alloy 718 is a common oilfield material for permanent and service equipment in need of high-mechanical ratings and resistance to corrosion especially environmentally-assisted cracking in sour gas wells. In past decade Alloy 718 production from traditional and newer mills has greatly increased in response to global demands; independently yet driven by similar market growth additive manufacturing (AM) has expanded beyond rapid prototyping to become an industrial production process namely in the aerospace. Today 718 bar stocks as per API6CRA are produced by over a dozen mills worldwide;similarly 718 powder products are increasingly offered by both traditional and newer mills with intents to servea multitude ofAM technologies. Due to the rise of new economic forces in the O&G there are today needs for evaluating (ultimately qualifying) newer 718 producing mills as well as 718 powders in combination with various AM technologies. Due to concerns overraw-material properties a study was conducted to analyze 718 materials from these various origins utilizing (1) mill cert big-data analyses (2) third-party recertified mechanical test data (3) a multitude of sour service test results outside the traditional NACE MR0175/ISO15156 operational service limits among others. The later raw-material test implemented in the early 2010s for screening and qualification purposes aims at quantitatively comparing 718 production heats of various origins and with additive manufacturing also generating interests since the early 2010sthe same tests have also beenextended to determine how layer-by-layer deposited materials compare to bar stock materials.

Product Number: 51319-12948-SG

Author: Manuel Marya

Publication Date: 2019

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51317--9667-Additive Manufacturing for Sour Service: an Experimental Investigation

Product Number: 51317--9667-SG

ISBN: 9667 2017 CP

Author: William Kovacs

Publication Date: 2017

$20.00

The overall goal was to determine if a set of additive manufacturing (AM) parts could comply with the testing requirements of wrought or welded materials for sour service as outlined in NACE MR0175 / ISO 15156-3:2015. Recommendations for a qualification pathway for AM parts in sour service are included.

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51318-11171-Exploring the Corrosion Behavior of Alloy UNS N07718 Manufactured by Additive Manufacturing Under Different Building Directions

Product Number: 51318-11171-SG

Author: Filippo Cappuccini / Angelo Donato / Domenico Di Pietro / Antonella Dimatteo

Publication Date: 2018

$20.00

The main scope of this work is to explore different process configurations to understand the corrosion response of additive manufactured alloys and to suggest the parameters to be controlled for future qualification in sour environment.

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51314-4478-High-Temperature Oxidation Behavior of Alloy 718 Processed by Additive Manufacturing

Product Number: 51314-4478-SG

ISBN: 4478 2014 CP

Author: Kinga Unocic

Publication Date: 2014

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Statistics to Compare Alloy 718 Properties from Additive Manufactured and Newer Mill-Produced Bar Stocks

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Statistics to Compare Alloy 718 Properties from Additive Manufactured and Newer Mill-Produced Bar Stocks

51317--9667-Additive Manufacturing for Sour Service: an Experimental Investigation

51318-11171-Exploring the Corrosion Behavior of Alloy UNS N07718 Manufactured by Additive Manufacturing Under Different Building Directions

51314-4478-High-Temperature Oxidation Behavior of Alloy 718 Processed by Additive Manufacturing

Association for Materials Protection and Performance