Brass Casting Forming Techniques Brass is an alloy of copper and zinc. It has been used since ancient time in decorative crafts because of its rich color. Typically, the copper content of brass ranges between 60% - 70% in components used in the lighting industry. The higher the copper content the warmer and more gold-like will be the brass. There are various methods for forming parts from brass and numerous finishes that can be applied to capture the richness of this outstanding alloy. Crystal FAQ Brilliance Meter The Discerning Eye Pure glass that is devoid of any color is considered crystal. Standard glass has impurities that give it color. For example, when looking at plate glass you’ll see blue or green on the edge.
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