Naked Eye or Stereoscope

2 cases · 2 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Rolled Bar Application: Offshore clear all

Naked Eye or Stereoscope — sub-branches

Macro Oxalic Acid Electrolytic Etched 1 NItal Etched Macro 1

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The macrography of the longitudinal section of the pin (9.5 mm nominal diameter) shows the localized corrosion associated to the non metallic inclusions.

107

ML00016 / Apr.2017

SCC in Free Cutting 303SS

M - Austenitic Stainless SteelP - Machined PartAp - OffshoreCd - Stress Corrosion

Cm - Macro Oxalic Acid Electrolytic EtchedDf - Localized Corrosion

Longitudinal section of the mooring chain at the welded region in a position where the crack did not propagate to the surface yet. It is possible to see the crack parallel to the butt weld and presenting an irregular shape.

57

ML00013 / Apr.2017

Welding Cracks in Mooring Chain

M - Low Alloy Low Carbon QTP - Welded PartAp - OffshoreCd - Welding Defect

Cm - NItal Etched MacroDf - Crack