Metal tests reveal the property of various metals and alloys in terms of durability, strength, and failure. It decides whether the metal is suitable for the particular purpose for which it is intended to use. According to one of the best metal testing in Chennai , the metal tests are also known as metallography evaluation, metallographic examination, and metallurgical analysis. While experts use different advanced testing procedures for different metals, this blog is focused on listing a few of the chemical testing methods for precious metals. Scratch & acid test This is one of the most common tests carried out by gold testing labs in Chennai to determine the purity of the metal. A scratch stone is used to scratch the piece of metal and then different types of acids are poured. This method determines the karats and helps determine the value of the end product. However, this method is hazardous as the pouring of acids may burn your fingers. Fire assay Fire assay is one of the oldes...