2) Does not apply to threaded components.
A2k din en iso 4042 code#
Mini inimum layer yer thickn ckness (coa coating str structu cture) Layer thickness (coating structure) in µm Code number 1 coating metal 0 1) – 1 3 2 5 3 8 4 12 5 15 6 20Ģ coating metals – – 2+ 3 3+ 5 4+ 8 5+10 8+12ħ 2) 25 10+15 8 2) 32 12+18 9 2) 40 16+24 3) 1) Code number 0 applies to screw threads below M 1.6, where no specific layer yer thickness can be specified.
Coating metal Code letter A B C D E F GĬoating metal Sy mbol Zinc Zn Cadmium Cd Copper Cu Brass CuZn Nickel Ni Nickel-chrome 1) NiCr Copper-nickel CuNi Copper-nickel-chrome H CuNiCr 1) J Tin Sn K Copper-tin CuSn L Silver Ag N Copper-silver CuAg P Zinc-Nickel 3) ZnNi Q Zinc-Cobalt 3) ZnCo R Zinc-iron 3) ZnFe 1) Thickness of chrome layer 0,3 µm 3) Not in ISO 4042 This This callout system sys tem is built built up as follows: – a capital c apital letter for the coating c oating metal metal (Table (Table 1) – a number for the minimum layer thickness (coating structure) (Table 2) – a capital letter for the degree of gloss and after-treatment after-treatment (Table (Table 3) Table 1. Code system The The electroplated coatings of mechanical mechanical fasteners fast eners are designated designated by a code consisting consis ting of a combination combination of two capital letters and a number. This This information information on electroplated coatings correspond corres pondss with wit h DIN 267 Part 9 and ISO 4042. Note: The use of the nomenclature “galvanizing” for this treatment is not correct. Electropl Elect roplated ated coatings coa tings An electrolytically electrolyti cally applied applied coating shall be defined defined as a protective metallic metallic layer lay er being deposited deposited onto the surface of metal articles by immersing these parts in an aqueous solution through which an electrical current is passed. Scope and field of applicati application on These These technical conditions are in particular related to threaded fasteners (mainly (mainly bolts and nuts), but are also applicable to the whole range of mechanical fasteners. STANDARD STANDARD PLATINGS: SURFACE S URFACE COATINGS ISO : 4042 (EN ISO 4042) 4042) Electroplated Electropl ated coatings DIN : 267 Part 9 Electroplated coatings/Riv coatings/Rivestimen estimentiti elettrolitici/Revêtement elettrolitic i/Revêtement électrolytiques/ Revestim Revesti mientos electrolìticos/Elektrol electrolìticos /Elektrolyti ytische sche Überzü Überzüge ge Code system/Sistema di codifica/Systême de codification/sistema de codificaciòn/Kodifizierungssystem 1.
Maryland Metrics: Standard Platings - Surface Coatings