1.1 This specification covers two grades of ferromolybdenum. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are pro This specification covers different sizes of two grades of ferromolybdenum. The material shall conform to the requirements as to composition of the following chemical elements: molybdenum, carbon, phosphorus, sulfur, silicon, and copper.