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.
applications for sand castings of 319 include internal
combustion and diesel engine crankcases; gasoline and oil tanks;
and oil pans.
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.
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the alloy table and select another aluminum alloy
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Last Modified:August, 2004 by STG
GM Powertrain Casting Development