Ordering code for electroplated coatings for commercial fastenersĮxample of coding: A3L means zinc-plating (A in Table 1) with a minimum layer thickness of 8 µm In the case of other electroplated coatings, "P" in the code symbol signifies "degree of gloss optional". Yellowish glistening to yellowish-brown,iridescentī, C or D 3) at manufacturer's discretionġ) In the case of Zn and Cd however, process group Aģ) Process groups B, C or D in accordance with DIN 50 941 only apply to cadmium and zinc coatings. Self-color of chromate layer passivation by chromate Corrosion protection Designation of electroplated coatings as in DIN EN ISO 4042 Coating metal/alloy Short name Element Zn Cd1) Cu CuZn Ni Ni Cr2) CuNi CuNi Cr2) Sn. Degree of gloss and after-treatmentĬhromating in accordance with DIN 50 941 Process group M 1.6, where no specific layer thickness can be specified.Ģ) Does not apply to threaded components. Layer thickness (coating structure) in µmġ) Code number 0 applies to screw threads below – a capital letter for the degree of gloss and after-treatment (Table 3) surfaces (A2K, A3K, A2C, A3C) Wrth short name Short description Corrosion resistance A2K A3K A2C A3C Electroplated, blue (DIN EN ISO 4042 ). – a number for the minimum layer thickness (coating structure) (Table 2) – a capital letter for the coating metal (Table 1) This callout system is built up as follows: The electroplated coatings of mechanical fasteners are designated by a code consisting of a combination of two capital letters and a number. This information on electroplated coatings corresponds with DIN 267 Part 9 and ISO 4042. Note: The use of the nomenclature “galvanizing” for this treatment is not correct.
To the whole range of mechanical fasteners.Īn electrolytically applied coating shall be defined as a protective metallic layer being deposited onto the surface of metal articles by immersing these parts in an aqueous solution through which an electrical current is passed. These technical conditions are in particular related to threaded fasteners (mainly bolts and nuts), but are also applicable MARKIERUNG: Alle Abmessungen mit Typenmarkierung S1, S2, S3 und Herstellerkennung Bei allen oben genannten Maßen handelt es sich um Circa-Angaben, die nach oben und unten abweichen können. ISO : 4042 (EN ISO 4042) Electroplated coatings DIN : 267 Part 9 verzinkt A2K nach DIN EN ISO 4042, weitere Beschichtungen auf Anfrage.