Aluminum Alloys
Copper Base Alloys
Modified 1% Chromium Copper
Aluminum Alloy castings represent the major portion of O'Fallon Casting's business. Most aluminum alloys are heat treatable and therefore can be furnished with the most optimal physical properties for the end product.
356 and A356 are the most common and economically produced aluminum alloys cast by O'Fallon Casting. These alloys are readily cast in complex, thin walled configurations with an excellent surface finish. They also combine good strength and corrosion resistance and are the first alloy preference for electronic housings within the investment casting industry.
Also routinely cast are aluminum alloys A357 and C355. Alloy A357, and the Beryllium free variation F357, are stronger than A356 and should be specified when higher properties are required. Alloy C355 is also stronger than A356, especially at elevated temperatures, but is less ductile.
Other aluminum alloys cast at O'Fallon Casting are D712 (also known as 40E) which is easily brazable, and A201 (also known as KO-1), the highest strength cast aluminum alloy currently available. These alloys are significantly less castable than A356. By utilizing our countergravity casting techniques we are able to cast these difficult to cast alloys in complex configurations.
Silicon Carbide Metal Matrix Composites: Please refer to our separate technical sheet regarding the unique characteristics of this family of alloys.
See Alloy Chart
See Examples
See O'Fallom Casting Alloy MSDS
Some copper base alloys can be more difficult to cast than aluminum alloys since they often combine with oxygen in the atmosphere to form oxides. Oxide formation can be reduced by our countergravity (CLA) casting techniques. This CLA process offers a significant advantage to casting copper base alloys due to the low turbulence experienced during the casting operation.
Silicon Brass (C87400) represent the most common and castable of the copper base alloys.
Other copper base alloys routinely cast by O'Fallon Casting include Yellow Brass (C85400), Red Brass or 85-5-5-5 (C83600), Aluminum Bronze - Grade C (C95400) and Navy G (C90300). These alloys are specified for their machinability, corrosion resistance and/or wear characteristics.
See Alloy Chart
See Examples
See O'Fallon Casting Alloy MSDS
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