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.
Computer Scientist Salary. Computer Scientists in the United States take home an average $86K per year. Overall cash earnings of Computer Scientists stretch from $52K near the bottom to $130K at the top, and the heftiest packages can encompass around $10K each from bonuses and profit sharing.