deforming upon striking the substrate preferably the particles have an average nominal diameter of from 60 to 90 microns it was initially believed that the present system could be used to coat brass substrates with tin using the standard main gas temperatures of from 600 to 700 u00b0 f to coat the substrate in the data reported below the nozzle 54 is 300 millimeters long has a throat 58 with a diameter of 2 8 millimeters and an exit end 60 of 12 5 millimeters by 5 millimeters the main gas pressure is 300 psi the main gas temperatures are as noted below the standoff distance was 20 millimeters and the injector tube 50 was at an angle of 45 degrees the particles had a nominal average size of from 63 to 90 microns the substrates were either c26000 u00bd hard cartridge brass or c42500 extra spring tin brass the c26000 has a rockwell b hardness of 68 a yield strength of 51 ksi and a tensile strength of 62 ksi the c42500 is a copper alloy having a rockwell b hardness of 92 a yield strength of 90 ksi and a tensile strength of 92 ksi several continuous tin coatings were produced on c26000 brass substrate for adhesion testing and failure mode analysis the substrates were coated at a traverse rate of 400 feet per minute and a particle feed rate of 73 grams per minute adhesion measurements were made using a romulus adhesion tester from quad group pull studs are attached onto the tin surface with epoxy mounted.