The term 'Lead Substitute' refers to a material that can be used in place of lead, such as BISMUTH (7 letters). BISMUTH is a chemical element with the symbol Bi and atomic number 83. It is a brittle metal with a silvery white color when freshly produced, but which soon tarnishes to a dull grayish color. BISMUTH is commonly used as a lead substitute in many products, such as ammunition, fishing weights, and some types of solder.