Aircraft Materials, Hardware & Processes
Which statement correctly describes the 2000 series of wrought aluminum alloys?
Answer
Copper is the principal alloying element, the alloys are solution heat-treated, corrosion resistance is poor unclad, and the best-known alloy is 2024
The handbook states that copper is the principal alloying element of the 2000 series, that the alloys are solution heat-treated to optimum properties equal to mild steel, that their corrosion resistance is poor unclad, and that the best-known alloy is 2024. Magnesium is the 5000-series element, manganese is the 3000-series element with 3003 the most popular, and commercially pure aluminum is the 1000 series.
Source: FAA-H-8083-30B, Ch. 7 p. 7-7 — 'Wrought Aluminum — 2000 series'
Not the answer
- The series is commercially pure aluminum used mainly for cladding
- Manganese is the principal alloying element and the best-known alloy is 3003
- Magnesium is the principal alloying element and the alloys are non-heat-treatable
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