Cast Iron Tensile Strength
Cast Iron Tensile Strength
(OP)
I am working on a disc brake rotor/hub application which uses a cast (I presume green sand) gray iron as the material. Notwithstanding impact or shock loading which could only occur during a crash, does anyone know of a reason why 37,000 psi cast gray iron would be inferior in performance to a lower tensile material such as 25,000 psi gray iron?





RE: Cast Iron Tensile Strength
RE: Cast Iron Tensile Strength
Corrosion resistance should be the same, while fatigue properties are better for higher strength CI.
RE: Cast Iron Tensile Strength
This would result in better damping properties and dry lubrication(due to the presence of more graphite). Also the machining of these castings is easier.
RE: Cast Iron Tensile Strength
As to noise damping I would venture that For the same %vol graphite the more branched and bettter distributed graphite flake will provide better damping/ also quite possibly better differential heating performance.
Though it is common that as arunmrao states that the lower strength iron has a higher carbon equivalent.
Nick
I love materials science!
RE: Cast Iron Tensile Strength
RE: Cast Iron Tensile Strength
RE: Cast Iron Tensile Strength
FYI, copper does not form a stable carbide compound. C has very low solubility in the Cu FCC lattice, ~ 0.01%, and the rest of the phase diagram is Cu + C. Cr & Mo are the most common carbide formers in iron and steel alloys. Cu promotes pearlite formation and has a potent strengthening effect on the BCC iron lattice, similar to Ni.
RE: Cast Iron Tensile Strength
AN ADDITION OF 0.5% CHROME AND 0.2 % MOLY WOULD CREATE VERY STABLE CARBIDES....!!!