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Chemically pure aluminum is just about never used in construction, it's too soft. Most of what's labeled as aluminum are really alloys, mixtures between aluminum and small amounts of other metals. 7005 is just the name for a certain "recipe" of aluminum alloy. If you'd look it up you'd see hardness, strength, resistance to fatigue, recommended heat treatments after welding etc etc.
Social Security Administration form 7005
210.15
7005 = 168,070,000,000,000
7000
Days of Our Lives - 1965 1-7005 was released on: USA: 16 April 1993
The Young and the Restless - 1973 1-7005 was released on: USA: 7 November 2000
1953
Seven thousand and five.
7001-7005
4353 MI/ 7005 KM
7005 = 700 x 700 x 700 x 700 x 700 = 168070000000000