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

Informace o normě:

Označení normy: API TR 21D
Datum vydání normy: 1.8.2024
Počet stran: 42
Přibližná hmotnost: 126 g (0.28 liber)
Země: Americká technická norma
Kategorie: Technické normy API

Anotace textu normy 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