Definition(s)
Stress Corrosion Cracking (SCC)
Cracking of metal involving anodic processes of localized corrosion and tensile stress (residual and/or applied) in the presence of water and H2S. NOTE Chlorides and/or oxidants and elevated temperature can increase the susceptibility of metals to this mechanism of attack. [ISO 15156-1].
Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global Standards
Stress Corrosion Cracking
The cracking which results from a combination of corrosion and stress.
Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
Stress Corrosion Cracking
Cracking induced by a combination of stress and corrosion.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
Stress Corrosion Cracking
Cracking of metal involving anodic processes of localized corrosion and tensile stress (residual and/or applied).
NOTE 1 Parameters that influence the susceptibility to SCC are temperature, pH, chlorides, dissolved oxygen, H2S and CO2.
NOTE 2 The above definition differs from that of the same term given in ISO 15156-1:2009, definition 3.21, since it includes external environments.
Source: ISO 21457:2010, Petroleum and natural gas industries — Materials selection and corrosion control for oil and gas production systems, First Edition,September 2010. Global Standards