GOST 30649-99

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  ГОСТ 30649-99

GOST 30649−99 Alloys based on noble metals for jewellery. Stamps (with Amendments No. 1, 2)

GOST 30649−99

Group W51

INTERSTATE STANDARD

ALLOYS BASED ON NOBLE METALS FOR JEWELLERY

Brand

Noble metals based alloys for jewellery.
Marks

ISS 39.060; 77.120.99*
_______________
* Changed the wording, Rev. N 1.

Date of introduction 2000−07−01

Preface

1 DEVELOPED by the Technical Committee on standardization TC 304 «Noble metals, alloys, industrial and jewelry products made of them; secondary resources containing noble metals», Ekaterinburg factory on processing of nonferrous metals

INTRODUCED by Gosstandart of Russia

2 ADOPTED by the Interstate Council for standardization, Metrology and certification (Protocol No. 15−99 dated may 28, 1999)

The adoption voted:

3 this standard takes into account the metrics and requirements of the international standard ISO 9202−91 «Jewelry. Sample of precious metal alloys» in part of the samples (content of precious metals in alloys)

4 Resolution of the State Committee of the Russian Federation for standardization and Metrology dated 19 October 1999 No. 354-St interstate standard GOST 30649−99 introduced directly as state standard of the Russian Federation from July 1, 2000.

5 INTRODUCED FOR THE FIRST TIME

AMENDED No. 1, adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 26 from 08.12.2004). The state developed by Russia. By order of the Federal Agency for technical regulation and Metrology from 30.03.2005 N 70 St introduced on the territory of the Russian Federation with 01.09.2005; Amendment No. 2 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 34 dated 11.12.2008). The state developed by Russia. By order of the Federal Agency for technical regulation and Metrology dated 16.07.2009 No. 248-St introduced in the Russian Federation since 01.01.2010

Change N 1, 2 made by the manufacturer of the database in the text IUS N 6, 2005, ICS # 10, 2009

1 Scope

This standard specifies the brand of gold, silver, alloys based on noble metals: gold, silver, platinum and palladium used for jewelry, ritual and ceremonial and other products, household products, semi-finished products for their production in the form of sheets, tapes, strips, foils, wires, tubes, profiles, of cast billets in any form is manufactured by methods of hot and cold deformation or casting.

(Changed edition, Rev. N 2).

2 Normative references

The present standard features references to the following standards:

GOST 12550.1−82 Alloys palladium-iridium. Method for the determination of palladium

GOST 12550.2−82 Alloys palladium-iridium. Methods of spectral analysis

GOST 12551.1−82 Alloys platinum-copper. Methods for determination of copper

GOST 12551.2−82 Alloys platinum-copper. Methods of spectral analysis

GOST 12553.1−77 Alloys of platinum-palladium. Method for the determination of palladium

GOST 12553.2−77 Alloys of platinum-palladium. Method of spectral analysis

GOST 12556.1−82 Alloys platinum-rhodium. Method for the determination of rhodium

GOST 12556.2−82 Alloys platinum-rhodium. Methods of spectral analysis

GOST 12558.1−78 Alloys palladium-silver. Method for the determination of silver

GOST 12558.2−78 Alloys palladium-silver. Methods of spectral analysis

GOST 12559.1−82 Alloys platinum-iridium. Method of determination of iridium

GOST 12559.2−82 Alloys platinum-iridium. Methods of spectral analysis

GOST 12560.1−78 Alloys palladium-silver-cobalt. Method for the determination of cobalt and silver

GOST 12560.2−78 Alloys palladium-silver-cobalt. Method of spectral analysis

GOST 12561.1−78 Alloys palladium-silver-copper. Method for the determination of copper and silver

GOST 16321.1−70 Alloy silver-copper. Method of determining mass percentage of silver

GOST 16321.2−70 Alloy silver-copper. Method of spectral analysis

GOST 17234−71 Gold alloys. The method of determining the mass fraction of gold and silver

GOST 17235−71 Gold alloys. Spectral method of determination of bismuth, antimony, lead and iron

GOST 22864−83* Noble metals and their alloys. General requirements for methods of analysis

GOST 27973.0−88* Gold. General requirements for methods of analysis

GOST 27973.1−88 Gold. Methods of atomic-emission analysis

GOST 27973.2−88 Gold. Method of atomic-emission analysis with inductive plasma

GOST 27973.3−88 Gold. Method of atomic-absorption analysis

GOST 28353.0−89* Silver. General requirements for methods of analysis

GOST 28353.1−89 Silver. Method of atomic-emission analysis

GOST 28353.2−89 Silver. Method of atomic-emission analysis with inductive plasma

GOST 28353.3−89 Silver. Method of atomic-absorption analysis
________________
* On the territory of the Russian Federation also has the GOST R 52599−2006 «Precious metals and their alloys. General requirements for methods of analysis».

(Changed edition, Rev. N 2).

3 Symbols and abbreviations

3.1 In the standard, the following symbols for of grades and abbreviations: PLN — gold, SR — silver PL — platinum, Rd — rhodium, And — iridium, PD — palladium, M is copper, N — Nickel, C — zinc, CD — cadmium, Re — rhenium, Cu — silicon, GA — gallium, In tungsten, In — India, It — yttrium, cobalt, Ru — ruthenium, X — chrome, CR — zirconium. OST. — the rest.

(Changed edition, Rev. N 1, 2).

3.2 Name of grades composed of letters that represent the components of the alloy, and the following digits. The figures after the letters indicate the nominal content of the alloy component in thousandths (samples), if the component is a noble metal, and the percentage, if the component — base metal.

The last component in the name brand figure not indicated, if he is ignoble.

3.3 Sample — the minimum content of a particular precious metal measured in parts per thousand units of mass of alloy.

4 Requirements

4.1 Chemical composition of gold and alloys of gold, silver, platinum and palladium must conform to the requirements of tables 1−4.

Note — by agreement with the authorities of the State assay office of the country of manufacturer is allowed to produce other alloys chemical composition.


Table 1 — Chemical composition of gold alloys based on gold

Table 1. (Changed edition, Rev. N 2).


Table 2 — Chemical costasierra and alloys based on silver

Table 2. (Changed edition, Rev. N 2).


Table 3 — Chemical composition of alloys based on platinum

End of table 3

Table 3. (Changed edition, Rev. 1, 2).


Table 4 — Chemical composition of alloys based on palladium

Continuation of table 4

Table 4. (Changed edition, Rev. N 2).

4.2 Chemical composition determines:

— gold — GOST 27973.0 — GOST 27973.3;

alloys based on gold — GOST 17234, 17235 GOST, GOST 22864;

— silver — GOST 28353.0*, GOST 28353.1, 28353.2 GOST, GOST 28353.3;

— alloys based on silver — GOST 16321.1, 16321.2 GOST, GOST 22864;

— alloys based on platinum according to GOST 12551.1, 12551.2 GOST, GOST 12553.1, 12553.2 GOST, GOST 12556.1, 12556.2 GOST, GOST 12559.1, 12559.2 GOST, GOST 22864.

— alloys based on palladium according to GOST 12550.1, 12550.2 GOST, GOST 12558.1, 12558.2 GOST, GOST 12560.1, 12560.2 GOST, GOST 12561.1, 12561.2 GOST, GOST 22864*.
________________
* On the territory of the Russian Federation GOST R 52599−2006 «Precious metals and their alloys. General requirements for methods of analysis».

Allowed to determine the chemical composition of alloys other methods of equal accuracy standard.

(Changed edition, Rev. N 2).

4.3 alloy Properties, recommendations for their use are given in appendices A, B, C, d, E.

Annex a (informative). Properties of alloys based on gold

APPENDIX A
(reference)

Table A. 1

Table A. 1. (Changed edition, Rev. N 2).

ANNEX B (reference). Properties of alloys based on silver

APPENDIX B
(reference)

Table B. 1

Table B. 1. (Changed edition, Rev. N 2).

ANNEX b (informative). Properties of alloys based on platinum

THE APP
(reference)

Table B. 1

Table B. 1. (Changed edition, Rev. N 1, 2).

APPENDIX d (reference). Properties of alloys based on palladium

APPENDIX D
(reference)

Table G. 1

Table G. 1. (Changed edition, Rev. N 2).

ANNEX D (informative). Recommendations for the use of alloys based on noble metals. Technological properties

APPENDIX E
(reference)

Table D. 1

Table G. 1. (Changed edition, Rev. N 1, 2).