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API 571-Temper Embrittlement Description of Damage

  1. What is Temper Embrittlement?
    Temper embrittlement is the reduction in toughness due to a metallurgical change that can occur in some low alloy steels.
  2. What causes Temper embrittlement?
    Long term exposure in the temperature range of about 650°F to 1070°F (343°C to 577°C).
  3. What change does Temper Embrittlement cause?
    An upward shift in the ductile-to-brittle transition temperature as measured by Charpy impact testing.
  4. When is temper embrittled equipment susceptible to brittle fracture?
    At start-up and shut-down?
  5. When is loss of toughness not evident?
    @ operating temperature.
Author
egf4201
ID
349523
Card Set
API 571-Temper Embrittlement Description of Damage
Description
Description of Damage
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