BS ISO 3160-2:2015
$142.49
Watch-cases and accessories. Gold alloy coverings – Determination of fineness, thickness, corrosion resistance and adhesion
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 26 |
This part of ISO 3160 specifies methods to determine fineness, thickness, corrosion resistance and adhesion for gold alloy coverings on watch-cases and accessories, including bracelets when they are permanently attached to the case.
The tests apply only to significant surfaces.
This part of ISO 3160 applies to all gold alloy coverings specified in ISO 3160‑1 .
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 General 5 Determination of gold fineness 5.1 General 5.2 Methods of gold fineness determination |
| 11 | 6 Determination of thickness 7 Determination of the corrosion resistance 7.1 Forms of corrosion |
| 12 | 7.2 Sampling and preparation 7.2.1 General 7.2.2 Test of finished items (ready-for-use condition) 7.2.3 Test of coating process (without passivation treatment) 7.2.4 Non-significant surfaces 7.3 Continuity of the covering (porosity test) 7.3.1 General 7.3.2 Test for a copper-containing base metal with or without nickel, and die-cast zinc-based alloys |
| 13 | 7.3.3 Test a ferrous base metal |
| 14 | 7.3.4 Non-determination of base metal 7.3.5 Testing with nitric acid vapour 7.4 Synthetic perspiration test 7.4.1 Test vessel 7.4.2 Test solution 7.4.3 Position of the sample 7.4.4 Temperature during the test 7.4.5 Duration of the test |
| 15 | 7.5 Neutral saline mist test 7.5.1 General 7.5.2 Criteria 7.6 Test of the effects of agents containing sulfur 7.6.1 Thioacetamide test 7.6.2 Flowers of sulfur test in a moist atmosphere 8 Adhesion test |
| 16 | Annex A (normative) Method of obtaining a sample of gold alloy covering |
| 18 | Annex B (normative) Implementation of the reference methods for the determination of gold alloy coating fineness |
| 20 | Annex C (normative) Description of the main tests for determination of the thickness of gold alloy coverings |
| 22 | Bibliography |
