Here in Canada, Estwing is considered the Rolls Royce of hammers. But, given that these hammers cost $50 or more, I've never owned or used an Estwing hammer.

Estwing makes a 3 pound all steel sledge hammer, called the B3-3LB.

http://i.walmartimages.com/i/mp/MP/1...46_500X500.jpg

http://www.estwing.com/

Apparantly, WalMart and Home Depot sell Estwing, so you should at least be able to get one without paying a high mark up.

Estwing tools are made in Rockford, Illinois.