G3000 Gray Iron - School me on it 2

[toastedhead]

We're going to manufacture some brake rotors here for the owners personal race car. Ive determined we're going to use G3000 cast grey iron per the SAE standard for the alloy. I have some questions regarding stress relieving.

From what I understand - you stress relieve the iron prior to machining correct?

Any other processes I should do to brake rotors?

What about cryogen? Ive heard its great and Ive heard it doesnt make a pinch of crap difference.

thanks for your help

 

[arunmrao]

"Introduction to Gray Cast Iron Brake Rotor Metallurgy"

http://www.sae.org/events/bce/tutorial-ihm.pdf

I have not failed. I've just found 10,000 ways that won't work." — Thomas Edison
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[swall]

At the risk of starting another cryo war--don't bother with cryogenic treatment on the rotors you will be making.

 

[toastedhead]

I appreciate the response - but I already had that.

 

[toastedhead]

Swall - thanks for the input but I need something more than just "dont bother with it". Got some experience or justification?

 

[swall]

OEM rotors are not cryo treated. Rotors from Autozone, NAPA and other aftermarket OEM type rotors are not cryo treated. If you are making a specialty product, you could consider the profit enhancing opportunities of cryo treatment.

 

[arunmrao]

Brake rotors cryogenically treated
thread330-145775

This thread had discussed the merits and demerits of cryo treating brake rotors.

I have not failed. I've just found 10,000 ways that won't work." — Thomas Edison
_____________________________________