Compacted Graphite
Compacted Graphite
(OP)
I post this to all of you due to the fact, I am just lost!
I am contemplating handling performance engine blocks and one aspect is that they advertise one of their blocks as being "CG" being lighter and stronger. Can any of you educate me? Thanks in advance,
Fred
I am contemplating handling performance engine blocks and one aspect is that they advertise one of their blocks as being "CG" being lighter and stronger. Can any of you educate me? Thanks in advance,
Fred





RE: Compacted Graphite
The graphite in cast iron gives it its good thermal conductivity. In CG iron you get the graphite flakes giving good conductivity without being so long and interconnected that they hurt mechanical properties badly.
RE: Compacted Graphite
CG irons have certain advantages over gray cast irons -
-higher tensile strength at the same carbon equivalent for gray cast iron
-higher ratio of tensile strength to hardness
-much higher ductility and toughness, higher safety margin against fracture
-lower oxidation and growth at high temperatures
compared to ductile irons, the advantages of CG irons are;
-lower coefficient of thermal expansion
-higher thermal conductivity
-higher dampening capacity
-better castability, higher yield and more intricate castings
-improved machinability
The information above was cited from the ASM Metals Handbook, Desk Edition, page 321
RE: Compacted Graphite
http://www.sintercast.com/