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metallurgy question, front end componants

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I have been unable to find a reference for type of steel in steering assembly parts: balljoints, pitman arm etc... I had a new front end put on the truck ($$$) and saved the old components.

My guess is they would have a good amount of carbon, I havent done a spark test or tried to forge them yet..

Maybe I am not using the right terminology in the search?

Thanks for the help!


In my search of JUNKYARD STEELS I found the "steering Arm" to be 4042, a rather general term. I also found this awesome reference:



Edited by Kenny O
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It's difficult to speculate unless you can find who made the original assembly and obtain the specifications - Mazda may be different from Mercedes who may different from Ford.


Machinery's Handbook has a chart of general applications; it states:

Steering arms...4042

Steering knuckles...3141

Steering knuckle pins...4815, 4820

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