Temper Embrittlement

Definition(s)


Temper embrittlement

The reduction in toughness due to a metallurgical change that can occur in some low alloy steels, e.g. 2-1/4Cr-l Mo, as a result of long term exposure in the temperature range of about 650°F – 11 OO°F (345°C – 595°C).

Source: API 510, Pressure Vessel Inspection Code: In-service Inspection, Rating, Repair, and Alteration, Tenth Edition, May 2014, with Addendum May 2017. Global Standards

Source: API 510, Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration Downstream Segment, Ninth Edition, June 2006. Global Standards