Question

A type of casting of manganese bronze called manganese-aluminium alloy consists of approximately __________ of aluminium

(a) 60 to 68%

(b) 2 to 4%

(c) 3 to 7.5%

(d) 15%

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I need to ask this question from Properties of Copper and its Alloys-1 topic in division Copper and its Alloys of Aerospace Materials & Processes

Answer 1

The correct answer is (c) 3 to 7.5%

Easiest explanation: Manganese-aluminium alloy is a type of manganese bronze alloy. It consists of approximately 2.5% to 5.0% of manganese. It also consists of around 60% to 68% copper and 2.0% to 4.0% of iron.