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2. International standard; EN 515:1993 — Aluminum and Aluminum Alloys-Wrought Products-Temper Designations.
3. J. S. Robinson, R. L. Cudd and J. T. Evans, Mater. Sci. Technol., 19 (2003) 143.
4. J. E. Hatch, ’Aluminum: Properties and Physical Metallurgy’, American Society for Metals, Metals Park, OH 1984.
5. S. P. Ringer and K. Hono, Mater. Charact., 44 (2000) 101.