Sample No. and temper σ0.2/MPa σb/MPa Elongation,% Alloy YT-7075 Φ70×3mm in the T6 temper. 615.58 655.73 8.23 Alloy YT-7075 Φ70×6mm in the T6 temper. 536.4 615.9 12.15 Beijing Uniontop Technology Co. Ltd is a high-tech private company，which integrates R & D, manufacturing and marketing for aluminium extrusion profile products. Cooperated with academies of science and universities, we established a laboratory which has been concentrated on researching on high-performance aluminum alloy for m...