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Standard API TR 21D 1.8.2024 preview

API TR 21D

A Study of the Effect of Thread Forming on the Susceptibility of Precipitation Hardened Ni-Based Alloy Fasteners to Hydrogen Embrittlement, First Edition

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STANDARD published on 1.8.2024


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The information about the standard:

Designation standards: API TR 21D
Publication date standards: 1.8.2024
SKU: NS-1250987
The number of pages: 42
Approximate weight : 126 g (0.28 lbs)
Country: American technical standard
Category: Technical standards API

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Annotation of standard text API TR 21D :

This report quantifies the hardness profile of both machined and rolled threads in precipitation hardened nickel-based alloys (PHNAs); studies the effects of both machined and rolled threads on hydrogen induced stress cracking (HISC) susceptibility in relevant PHNAs; tests these PHNA grades used for bolting per the requirements of API standards; and provides guidance for the use of the selected testing methodology and resultant test data in the petroleum and natural gas industry. See more

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