ISO 4524-6-1988 rus PDF

Full title and description

St ISO 4524-6-1988 — Metallic coatings — Test methods for electrodeposited gold and gold alloy coatings — Part 6: Determination of the presence of residual salts. This part specifies a quick qualitative method based on boiling specimens in water of known electrical conductivity and measuring any increase in conductivity to indicate residual salts or other conducting impurities in electrodeposited gold and gold‑alloy deposits.

Abstract

Specifies a test procedure in which plated metal specimens are boiled in water of known conductivity; an increase in the water’s conductivity after boiling indicates the presence of residual salts or other conductive impurities in the deposit. The method is intended for entirely metallic articles plated with gold or gold alloys and is not intended for composite articles (for example plastic parts with a metallic coating).

General information

• Status: Published (International Standard; confirmed).
• Publication date: October 1988 (Edition 1, 1988‑10).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.40 (Metallic and other inorganic coatings).
• Edition / version: Edition 1 (1988).
• Number of pages: 2 pages.

Key bibliographic and lifecycle metadata (status, date, ICS and technical committee) are recorded on the ISO catalogue; this part was reviewed and the publication was most recently confirmed during the ISO systematic review process.

Scope

Defines a method for detecting the presence of residual soluble salts and other conducting contaminants in electrodeposited gold and gold‑alloy coatings by measuring changes in the electrical conductivity of a defined volume of water after boiling the specimen. The procedure applies to completely metallic articles and explicitly excludes composite articles (for example plastic components with a metallic coating). The method is intended as a qualitative/indicator test to reveal residual ionic contamination rather than to provide detailed chemical speciation or quantitative residue concentration.

Key topics and requirements

• Preparation of reagents and water of specified initial electrical conductivity.
• Procedure for boiling plated specimens in a controlled volume of water.
• Measurement of electrical conductivity before and after boiling (use of calibrated conductivity meter).
• Interpretation: an increase in conductivity indicates residual salts or other conducting impurities.
• Applicability limited to fully metallic articles; composite items are excluded.
• Requirements for recording test conditions and results to ensure repeatability and traceability.

These topics summarize the method’s main steps and acceptance concept; full procedural detail, instrument tolerances and reporting requirements are contained in the standard text.

Typical use and users

Laboratories and quality‑control departments in industries that plate or specify electrodeposited gold (and gold alloys) — for example electronic and electrical contact manufacturers, precision connectors, plated decorative items and jewellery producers — use this method as a routine check for ionic contamination after plating and rinsing operations. Test houses, standards bodies and compliance engineers may also use it when verifying batch cleanliness or when auditing plating processes.

Related standards

ISO 4524 is a multipart series covering test methods for electrodeposited gold and gold‑alloy coatings; other parts and related ISO test methods address environmental exposure tests, corrosion assessments and residue determination for other noble metal platings (see other parts of ISO 4524 and related ISO/TC 107 publications). National adoptions and translations may exist.

Keywords

electrodeposited gold; gold alloy coatings; metallic coatings; residual salts; conductivity test; test method; plating quality; ISO 4524‑6; residue detection.

FAQ

Q: What is this standard?

A: ISO 4524‑6:1988 is Part 6 of the ISO 4524 series of test methods for electrodeposited gold and gold alloy coatings; it specifies a test for the presence of residual salts by measuring conductivity changes after boiling plated specimens.

Q: What does it cover?

A: It covers a qualitative indicator procedure to detect soluble ionic residues (residual salts and conducting impurities) in gold and gold‑alloy electroplated deposits on fully metallic articles. It does not provide detailed chemical analysis or apply to composite (non‑fully‑metallic) articles.

Q: Who typically uses it?

A: Plating shops, quality and process control laboratories, manufacturers of electrical contacts and connectors, jewellery and decorative plating producers, and conformity assessment bodies use this test as a cleanliness check.

Q: Is it current or superseded?

A: The ISO catalogue shows ISO 4524‑6:1988 as published and confirmed; it was last reviewed and confirmed in the ISO systematic review process (confirmation recorded in 2022), so this edition remains current until any formal revision or withdrawal is published. Users should check the ISO catalogue or national standards bodies for the latest status before formal citation.

Q: Is it part of a series?

A: Yes — ISO 4524 is a multipart standard covering test methods for electrodeposited gold and gold alloy coatings; Part 6 is the residual salt detection method. Other parts address environmental testing, corrosion and related test procedures.

Q: What are the key keywords?

A: Electrodeposited gold, gold alloys, residual salts, conductivity test, plating cleanliness, metallic coatings, ISO 4524‑6.