CU1297 Cobre Hoja

The foil is stainproofed with a chromate passivation. If required this can be removed by washing at ambient temperature in 10% Sulphuric acid or 20% Hydrochloric acid for 10 to 20 seconds. Typical analysis ppm: Ag 100, As 200, B< 1, Cr 50, Fe 5, Mg< 1, Mn< 1, Pb 2, Si<1,.