Metals

We offer Brass, Bronze and Aluminum castings made using green sand, airset, and permanent mold processes. Sizes range from ounces to 1200 lbs. One of a kind or thousands. Complexity is our specialty. Challenge us.

The following pages contain tables of alloy compositions and properties. The reader will notice some of the alloys have been highlighted. These are alloys that we recommend you take a close look at. They are either those most accepted in industry or those that we think offer exceptional properties or value.

ALUMINUM ALLOYS

There is an aluminum alloy to fit almost any application. There are aluminum alloys with strengths over 60,000 psi and alloys with elongations over 20%. Aluminum weighs one-third of steel. It can be cast for about the same cost per part as gray iron.

The aluminum pages are organized by family. The families of aluminum are defined by their major alloying elements. Although not yet widely accepted, it is highly recommended that designers use the UNS numbering system.

COPPER ALLOYS

Omitted from this guide are some alloys that are high in lead. The trend is toward lead elimination. It is likely that lead content legislation will render obsolete those products that contain more than one or two percent lead. This is not as devastating as it sounds. There are available today many alloys that have almost no lead and offer much better properties at a competitive price. We strongly recommend that leaded brass and bronze users begin evaluating their future needs today.

Bronzes are copper alloys which have a principle alloying element other than zinc or nickel. Bronze originally referred to those alloys which had tin as their principle alloying element. That definition has since been expanded to include several alloy families. Note that Manganese Bronze is actually a brass as it has zinc as its principle alloying element.

Brasses are copper alloys with zinc as their principle alloying element. There may or may not be other elements present such as lead, tin, iron, aluminum etc.

Copper-Nickels are copper alloys that contain high levels of nickel.

There are some specialized high copper alloys used especially for their high electrical conductivity. They are not included here, but most copper based foundries, including St. Paul Brass and Aluminum Foundry, can pour them.

              
     
      St Paul Brass and Aluminum Foundry   -   954 West Minnehaha Avenue, St. Paul, MN  55104  -  (651)488-5567  -  (800)348-1649  -   Fax: (651)488-0908
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