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.
Research Scientist Salary. (United States). A Research Scientist earns an average salary of $75,957 per year. Skills that are associated with high pay for this job are Software Development, Engineering Design, Data Modeling, Chemical Process Engineering, and Matlab.esearch Scientist Salary. (United States). A Research Scientist earns an average salary of $75,957 per year. Skills that are associated with high pay for this job are Software Development, Engineering Design, Data Modeling, Chemical Process Engineering, and Matlab.