Metallic coatings. Thioacetamide corrosion test (TAA test).
NORMA vydaná dňa 1.5.1995
Označenie normy: BS EN ISO 4538:1995
Dátum vydania normy: 1.5.1995
Počet strán: 12
Približná hmotnosť: 36 g (0.08 libier)
Krajina: Britská technická norma
Kategória: Technické normy BS
Reagents, apparatus and procedure for assessing the efficiency of tarnish-preventing treatments of silver and gold and for detecting discontinuities in precious metal coatings by exposure to an atmosphere containing volatile sulphides. Gives guidance on the number and type of test specimens, the exposure period and criteria of failure. Status: Definitive