In addition to the wrought & cast aluminum options that Greg mentioned, cast iron and forged steel are also used. Sometimes the design is cast aluminum for the upright (often called a steering knuckle or just knuckle for the rear suspension) and forged steel or cast iron for the hub section. Here are examples of both:
Almost every car I worked on over the years had forged steel knuckles and cast iron hubs. Some of the uprights may have been cast steel, or maybe cast iron with a steel stub axle, but I rarely work on cars newer than about 10 years old.
Regards
Pat
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If they are ferrous castings, they are nodular iron, aka ductile iron. Gray iron lacks sufficient strength and impact resistance. Steel is not castable in such intricate sections. You will not find a steel casting in an automobile.
thank u all guys...but my upright is withstand more than 300 kg weight, what type of compositions we have to use,titanium coated steel is possible or not ?
