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Originally Posted by James
Flywheels are machined, not cast. Annealing is the process of relieving stress in a material after a cold working process to restore strenghth and ductility while lowering hardness. Yes the color change is oxide. Steel=iron with carbon content between .1-.3%. Cast iron is iron too high in carbon content to be used for anything except casting procedures.
You're helping me study for my engineering materials class.
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Hi james,
A question for you, is the 240SX manual to Auto swap straight forward, no body or tunnels mods, just the obvious ??
Sorry didn't mean to stress you out.
Agreed the flywheel is machined, but the material is cast iron. I suspected this from the flywheels I looked at years ago, but called my local machine shop to be sure.
Your definition of annealing is very limited. I assure you we anneal material every day thats not Cold worked.
That is an example of annealing, not a definition of all annealing.
You can have a stressed material thats not been cold worked. Cast iron has this problem, hence my comment.
Your definition of steel is also very basic.
Steels that are heat treated are tool steels, and from memory the carbon range is different from mild steel. Guess you can look that up.
Cast iron is the common name for pig iron, as made by a blast furnace.
It is the starting point for ALL steels.
Yes it becomes a variety of steels with further treatment, including stainless steel.
You make it sound like a reject material !!!
So far I have not looked anything up, but I can and have access to PHD material scientist's here if you have a question you and I cant answer.