History of Electrum. This gold-silver alloy has a long history of being used by humans. It was used for different purposes since third millennium BC. However, the variation in the gold and silver contents of this alloy made it difficult to decide the value of each coin.
Malleability is the ability of materials to deform easily under compressive stress. This can be often characterized as materials ability to form thin sheets by hammering or rolling. On the other hand, Ductility is the ability of materials to deform easily under tensile stress.
Iron requires considerably more effort to pound into a sheet and is therefore less malleable. Yet, both are metals. In contrast, non-metallic elements, such as carbon or sulfur, shatter into pieces when hammered. Malleability is a valuable property because it allows metals to be shaped into useful forms.Pure gold is the most malleable metal. Silver, aluminum, lead, tin, and copper are also very malleable. Heating usually increases malleability.For instance, zinc, at standard temperatures is brittle, but becomes malleable at temperatures between 248Â°F (120Â°C) and 302Â°F (150Â°C).ron requires considerably more effort to pound into a sheet and is therefore less malleable. Yet, both are metals. In contrast, non-metallic elements, such as carbon or sulfur, shatter into pieces when hammered. Malleability is a valuable property because it allows metals to be shaped into useful forms.