In copper and copper alloys (brass, bronze), chemical analysis shows conformity to the declared alloy and the contents of elements that affect properties such as conductivity and machinability. Analysis is performed with a spark optical emission spectrometer (spark OES): a spark on the specimen surface excites the elements so that each emits light at its own wavelength, and element contents are determined in percent from the light intensity.
The test is performed with a method accredited by TÜRKAK under TS EN ISO/IEC 17025 (EN 15079); results are issued as an accredited test report.
Elements Determined
- Cu, Fe, Si, Al
Applied Standard
- EN 15079 – Copper and copper alloys, analysis by spark source optical emission spectrometry (S-OES)
Specimens and Reporting
The specimen needs a flat surface of at least 15 mm diameter for analysis; the surface is cut and ground in our laboratory. Several sparks are taken on each specimen and the mean is reported; on request, results are compared with the limits of the relevant material standard.