... T5 aluminum extrusion. T5 temper 6063 has an ultimate tensile strength of at least 22,000 psi (152 MPa) in ... 0.5 to 1.0-inch (25 mm) thick, and yield strength of at least 16,000 psi (110 MPa) up to ... at least 30,000 psi (207 MPa) and yield strength of at least 25,000 psi (172 MPa). In thicknesses ... at least 42,000 psi (290 MPa) and yield strength of at least 35,000 psi (241 MPa). Surface finish: ...