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API TR 21D : 2024

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

Standard Details

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 StandardDetails; and provides guidance for the use of the selected testing methodology and resultant test data in the petroleum and natural gas industry.

General Information

Status : ACTIVE
Standard Type: Main
Document No: API TR 21D : 2024
Document Year: 2024
Pages: 42
Edition: 1
  • Section Volume:
  • 01 Exploration and Production

Life Cycle

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API TR 21D : 2024
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