Briefly describe the steps that are used to ascertain whether a particular metal alloy is suitable for use in an automobile valve spring. Explain how the tensile strength and fatigue strength of a particular metal affect the materials selection process for an automobile valve spring.

Automobile valve spring

Briefly describe the steps that are used to ascertain whether a particular metal alloy is suitable for use in an automobile valve spring.

Explain how the tensile strength and fatigue strength of a particular metal affect the materials selection process for an automobile valve spring.

For a steel alloy material in a helical spring, explain how cold drawing and shot peeing treatments affect the spring performance and lifetime.