ASTM

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Application: Subsea Capture method: Aspect Before Analysis Detail focus: Secondary Cracks clear all

ASTM — sub-branches

A 8B 5F 1

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Macroscopic detail of the stud, adjacent to the fracture, showing that there are several secondary cracks at the bottom of the thread fillets, without any deformation evidence. This reveals a brittle material behavior, although the hardness measured at the stud end revealed 33HRc, as should be expected by the material specification.
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ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - Aspect Before AnalysisDf - Secondary Cracks