Raw Materials. The main component of brass is copper. The amount of copper varies between 55% and 95% by weight depending on the type of brass and its intended use. Brasses containing a high percentage of copper are made from electrically refined copper that is at least 99.3% pure to minimize the amount of other materials.
Principal Scientist in Boston, Massachusetts Salary. A Principal Scientist in Boston, Massachusetts earns an average salary of $123,925 per year.
(BLS, 2012). The typical forensic scientist salary in the best paying jobs make between $65,000 and $72,000 per year, according to 2012 data from the BLS. For new forensic scientists, the typical forensic scientist salary is between $48,000 and $60,000 per year.Overall, the median in 2010 was $51, 570, BLS data from 2010 shows. Within the forensic science category, there are several specialties that may change salary and compensation.he typical forensic scientist salary in the best paying jobs make between $65,000 and $72,000 per year, according to 2012 data from the BLS.