Question

If a component fabricated from an S-590 alloy is to be exposed to a tensile stress of 300 MPa at 650°C, what property is essential to estimate its rupture lifetime? a) Young's modulus b) Thermal conductivity c) Tensile strength d) Creep resistance

Answer 1

The property that is essential to estimate the rupture lifetime of a component exposed to a tensile stress of 300 MPa at 650°C is creep resistance.

Step-by-step explanation:

The property that is essential to estimate the rupture lifetime of a component exposed to a tensile stress of 300 MPa at 650°C is creep resistance.

Creep resistance is the ability of a material to resist a gradual permanent deformation under a constant load over an extended period of time at high temperatures. It is an important property to consider when designing components that will be subjected to high temperatures and long-term stress.

When estimating the rupture lifetime of a component under these conditions, it is crucial to choose a material with high creep resistance to ensure it can withstand the applied stress without experiencing significant deformation or failure.

Answer 2

The essential property to estimate the rupture lifetime of a component exposed to tensile stress at high temperature is d) Creep resistance

Creep resistance is the most crucial property for estimating the rupture lifetime of the S-590 alloy component under the specified conditions. It allows engineers to predict how long the component will last before succumbing to creep deformation and potential failure.

Therefore, while other properties might play some role, creep resistance is the essential property to estimate the rupture lifetime of a component subjected to tensile stress and high temperature.