Using pore free die casting

the castings with porosity free

heat treatable and weldable features are given. Mechanical properties of Al casting are improved significantly: Tensile strength and elongation as cast are increased by 30% and 150%￣200% separately. Tensile strength

yield strength and impact toughness by heat treatment are increased by 30%

100% and more than 100% separately. Many Al or Mg alloy die castings

such as the auto wheel

the brake cylinder

the hydraulic valve

the actuator body and the heat exchanger

have been produced. Being made in pore free die casting and heat treated by T6

Al Si12CuFe alloy wheel has follow properties: σ b=276 MPa

σ s=221 MPa

δ =7.0% and a similar fatigue characteristic to the rolled 5454 Al wheel.