Brake disk material Brake disk material raceengineer (Automotive) (OP) 9 Jul 02 07:33 What kind of steel is used for brake disk? I am planning to get them laser cut, out of 9mm steel plates.(Quantity is only 10) RE: Brake disk material GregLocock (Automotive) 9 Jul 02 18:22 We use gauge plate, but I don't know what the proper term is. Don't use stainless. Normal brake rotors are grey cast iron, I think, so the basic material properties are pretty hohum. CheersGreg Locock RE: Brake disk material mcguire (Materials) 9 Jul 02 22:42 Steel doesn't work as well as graphitic cast iron. It's a issue of thermal conductivity as well as friction properties. RE: Brake disk material raceengineer (Automotive) (OP) 10 Jul 02 07:05 Thanks, you led my in the right direction. I was actually considering stainless. I found that OEM’s recommend ASTM and ASME specified 80-60-03 Ductile Iron, because of the high-coefficient of friction. RE: Brake disk material ZoRG (Automotive) 20 Jun 04 12:38 Old post ... but is there anything new that is better to use? What are discs made of that have a "lifetime warranty" RE: Brake disk material Tmoose (Mechanical) 20 Jun 04 19:47 These guys suggest "life of the car" rotors are monolithic ceramic material.http://doc.tms.org/ezMerchant/prodtms.nsf/ProductLookupItemID/JOM-0302-32/$FILE/JOM-0302-32F.pdf?OpenElementThese guys offer rotors with a "limited lifetime warranty against warping." http://www.baer.com/Media/ContentDetails.aspx?ContentID=106Premium priced "Lifetime" pads are pretty common, but even from big suppliers there may be some FINE print. http://www.brakewarrantysettlement.com/ RE: Brake disk material Gunman (Automotive) 21 Jun 04 00:16 I asked on one of the other eng-tips forums, but this seems on topic here too...What are your thoughts on titamium rotors? ( http://www.zmibrakes.com )Link to other thread:http://www.eng-tips.com/viewthread.cfm?SQID=95224&SPID=108&page=1 -Dave"Everything should be designed as simple as possible, but not simpler" RE: Brake disk material ZoRG (Automotive) 23 Jun 04 10:10 My thoughts are too expensive. I can get a carbon brake setup for close the same as the zmi brakes. RE: Brake disk material Rob45 (Automotive) 29 Jun 04 12:22 Stainless steel isn't the very best material, perhaps, but it will work quite well when used with the correct friction material - that's what my Suzuki has, and I can attest they work well at 150 MPH+ !Of course, a bike would have stainless rotors simply for appearance' sake.My Corvette OTOH has simple carbon steel rotors, which also seem to work quite well but require grinding on a flywheel grinder rather than a brake lathe when turning is required, because of being too hard for the conventional turning tools.