1.1 This specification covers extruded 6061-T6 aluminum-alloy standard structural profiles. 1.2 The profiles are limited to I-beams, H-beams, channels, angles, tees, and zees. This specification covers the standard structural profiles for 6061-T6 aluminum-alloy. The profiles are limited to I-beams, H-beams, channels, angles, tees, and zees, which shall be produced by hot extruding only. Chemical composition and tensile prope