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

The information about the standard:

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

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