CWB Level 2 exam with 100% verified solutions

What is the description of damage of a brittle fracture? correct answersSudden rapid fracture under stress (residual or applied) where material exhibits little or no evidence of ductility or plastic deformation What type of Steel are of primary concern with brittle fractures? correct answersCarbon and low alloy steels. 400 series SS are also susceptible What has a significant influence on toughness and resistance to brittle fractures? correct answersSteel cleanliness and grain size In most cases brittle fractures occur only at what temperature? correct answersBelow the charpy impact transition temperature.(or ductile-to-brittle transition temperature) The point at which the toughness of the material drops off sharply What kind of equipment or units can be affected for brittle fractures? correct answers*Can occur during ambient temperature hydro testing due to high stresses and low toughness at the testing temperature *Most processes run at elevated temperature so the main concern is during startup, shutdown, or hydro/tightening testing.