A Design Study in Aluminum Castings
- GM Cylinder Block
Aluminum
Alloy 319 T5
Alloy
319 is a 6Si-3.5 Cu alloy with 1.0 Fe (max) and 1.0 Zn (max). The
T5 heat treatment is a thermal aging at 310F .
Alloy 319 has good casting
characteristics and machinability.
Typical
applications for sand castings of 319 include internal
combustion and diesel engine crankcases; gasoline and oil tanks;
and oil pans.
The
Alloy 319 has good ductility, hardness, fatigue strength, and machinability, but the alloy
fails to meet the requirements for tensile strength, yield strength, pressure tightness, and fluidity.
