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a) What are the chemical composition, mechanical properties, and typical uses of Aluminium 6061, 360 brasses, 1045 steel, and 4140 steel?
b) What do the numbers in 6061, 1045, 360, and 4140 represent?
c) Comment on the transition temperature of the materials, what this mean?
d) How can information about impact energy be used in a product design?
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introductiona trebuchet is weapon developed and used europe in the 12th century. it can also be known as a counter
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