What is elastic limit?

What is meant by elastic limit ?

The elastic limit of brass is 379MPa . What should be the minimum diameter of a brass rod if it is to support a 400 N load without exceeding its elastic limit?

The elastic limit of brass is 379 MPa . What should be the minimum diameter of a brass rod if it is to support a 400 N load without exceeding its elastic limit ?

What is elasticity ?

For a gas elastic limit