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.
For example the median expected annual pay for a typical Food Scientist in the United States is $66,476, so 50% of the people who perform the job of Food Scientist in the United States are expected to make less than $66,476.Source: HR Reported data as of October 2015. 1  Salary. 2  Salary + Bonus.3  Benefits.or example the median expected annual pay for a typical Food Scientist in the United States is $66,476, so 50% of the people who perform the job of Food Scientist in the United States are expected to make less than $66,476. Source: HR Reported data as of October 2015. 1  Salary. 2  Salary + Bonus. 3  Benefits.