Maximilian Lanz txs, happy to see that they are liked

Thanks for your comment, but why is that ?

Because of the hardness of the steel of the hammer. If tool steel strikes another piece of tool steel of equal hardness, it has the potential to chip, as neither will "give". A chisel head, or piece of round stock, will "mushroom" as it absorbs the blows, as it is softer. A hammer will not. This comment was made by someone else, I'm just passing it on. It makes sense.