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.
How much does a Ultrasound Technologist in Boston, MA make? The median annual Ultrasound Technologist salary in Boston, MA is $77,625, as of July 29, 2016, with a range usually between $70,533-$85,412 not including bonus and benefit information and other factors that impact base pay.