Abstract:In this paper, Al-12Zn-2.4Mg-1.2Cu (wt%) alloy billets as-deposited were extruded to be Ф100mm bar, Ф100mmxФ80mm seamless pipe and 160mmx15mm stripper plate under different deformation ways., respectively. The microstructures and mechanical properties of the products as-heat-treated were studied by optical metallographic, measurement of mechanical performance and scanning electron microscope examination. Metallographic testing results show that the grains in the initial billets are almost equiaxed with diameter about 20μm. There are some second phase precipitated distributing in the grains and the grain boundary. The deposited ventages around the grain as-deposited were welded together by welding metallurgy way during extrusion process. The flow lines were clearly observed in the extrusion direction in the different extrusion products. Properties of the products as-heat-treated including tensile strengths, yield strengths and elongations tests results show that the value of bars are 688 MPa, 654 MPa and12% in the cross direction(CD )and 698 MPa,674 MPa and10.5% in the longitude direction(LD). The value of the plates are 783MPa, 748 MPa and 7% in the CD and 751MPa, 719 MPa, 8%. in the LD. The seamless pipes also have excellent properties which are 781 MPa, 735 MPa and 9% in the LD. Scanning electron microscope examination shows the fracture characteristics of the fractured specimens revealed three different fracture models which are ductile fracture, mixed fracture and brittle fracture corresponding to bars, pipes and plates, respectively.