The claw hammer is the indispensable tool in every toolbox. As versatile as it is, there are tasks for which a specialized hammer would be more appropriate.
Despite its “indestructible” reputation, the claw hammer is less durable when used on metal surfaces. For this kind of work (i.e. freeing rusty pieces, shaping metal) the ball-peen hammer would be a better choice; it’s made with softer metal and has better shock-absorption.
To each task its hammer!