GOST 24552-2014

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  ГОСТ 24552-2014

GOST 24552−2014 Foil of gold, silver and alloys based on them. Specifications

GOST 24552−2014

INTERSTATE STANDARD

FOIL OF GOLD, SILVER AND ALLOYS BASED ON THEM

Specifications

Foil out of gold, silver and its base alloys. Specifications

ISS 77.150.99
GST 18 6140
18 6540

Date of introduction 2016−01−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−2009 «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. Rules of development, adoption, application, renewal and cancellation"

Data on standard

1 DEVELOPED by the Interstate technical Committee for standardization MTK 304 «Noble metals, alloys and industrial products thereof», the Ekaterinburg factory on processing of nonferrous metals

2 as AMENDED by the Federal Agency for technical regulation and Metrology

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol of October 20, 2014 N 71-N)

The adoption voted:

Short name of the country on MK (ISO 3166) 004−97	Country code MK (ISO 3166) 004−97	Abbreviated name of the national authority for standardization
Armenia	AM	The Ministry Of Economic Development Of The Republic Of Armenia
Azerbaijan	AZ	Azstandart
Belarus	BY	Gosstandart Of The Republic Of Belarus
Kyrgyzstan	KG	Kyrgyzstandard
Russia	EN	Rosstandart
Tajikistan	TJ	Tajikstandart
Uzbekistan	UZ	Uzstandard

4 by Order of the Federal Agency for technical regulation and Metrology dated 25 March 2015 N 167-St inter-state standard GOST 24552−2014 introduced as a national standard of the Russian Federation from 1 January 2016.

5 REPLACE GOST 24552−81


Information about the changes to this standard is published in the annual reference index «National standards», and the text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet

1 Scope

This standard applies to foil of gold, silver and alloys based on them in sheets and rolls, made by cold rolling.

2 Normative references

The present standard features references to the following standards:

GOST 166−89 (ISO 3599−76) Calipers. Specifications

GOST 427−75 Rulers measuring metal. Specifications

GOST 3479−85 tissue Paper. Specifications

GOST 6835−2002 Gold and alloys on its basis. Brand

GOST 6836−2002 Silver and alloys on its basis. Brand

GOST 8273−75 wrapping Paper. Specifications

GOST 9347−74 Cardboard gasket and gasket from him. Specifications

GOST 10197−70 Stands and tripods for the measuring heads. Specifications

GOST 12555.1−83 Alloys, silver-platinum. Method for the determination of silver

GOST 12555.2−83 Alloys, silver-platinum. Method of spectral analysis

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

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

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

GOST 12561.2−78 Alloys palladium-silver-copper. Method of spectral analysis

GOST 12562.1−82 Alloys gold-platinum. Method for the determination of gold

GOST 12562.2−82 Alloys gold-platinum. Methods of spectral analysis

GOST 12563.1−83 Alloys gold-palladium. Method for the determination of gold

GOST 12563.2−83 Alloys gold-palladium. Method of spectral analysis

GOST 12564.1−83 Alloys gold-palladium-platinum. Method for the determination of gold, palladium, platinum

GOST 12564.2−83 Alloys gold-palladium-platinum. Method of spectral analysis

GOST 14192−96 Marking of cargo

GOST 15150−69 Machines, instruments and other technical products. Versions for different climatic areas. Categories, conditions of use, storage and transportation of the impact of climatic factors of the external environment

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

GOST 16321.2−70 Silver-copper alloys. Method of spectral analysis

GOST 17234−71 Gold alloys. Method of determination of gold and silver

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

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

GOST 24104−2001laboratory Scales. General technical requirements
________________
On the territory of the Russian Federation GOST R 53228−2008 «Scales non-automatic actions. Part 1. Metrological and technical requirements. Test"


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

GOST 28798−90 Head of the measuring spring. General specifications

GOST 29329−92Scales for static weighing. General technical requirements
________________
On the territory of the Russian Federation GOST R 53228−2008 «Scales non-automatic actions. Part 1. Metrological and technical requirements. Test"


GOST 30649−99 Alloys based on noble metals for jewellery. Brand

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

3 Terms and definitions

This standard applies the following terms with respective definitions:

3.1 foil: Flat rolled product of rectangular cross section, uniform thickness less than 0.10 mm.

3.2 dent: the Defect of the surface in the form of randomly-spaced local depressions of various sizes and shapes with sloping edges.

3.3 the captivity: the Defect of the surface in the form of delamination, stretching in the warp direction and United with the base metal on one side.

3.4 stratification: the surface defects in the form cracks on the edges and the ends of the sheet.

3.5 flaw on edges: the surface defects in the form of rupture of the metal at the edges of the strip.

3.6 fold: the Defect shape in the form of buckling of the middle part of the sheet resulting from nonuniform deformation of the foil width.

3.7 traces of Stripping: the surface defects in the form of areas with high surface roughness formed after the Stripping of the sheet of abrasive tool.

3.8 crack: a Defect in the form of local closed rupture of metal of various sizes, having any direction.

3.9 scratch: the surface defects in the form of indentations of irregular shape and an arbitrary direction.

3.10 color tint: Defect formed on the smooth surface of the bands by forming a thin transparent surface oxide layer and light interference in it.

4 symbols and abbreviations

Legend foil stamped according to the scheme:

________________
The leaf shape making the letter not indicated.

Use the following shorthand for the forms of production: P — roll.

Symbols are examples foil:

1 Foil alloy brand CPM 960, with a thickness of 0.020 mm, width 50 mm, length 150 mm:

Foil SRM 960 0,02x50x150 GOST 24552−2014

2 Foil of gold of 99.99 brand 3l, thickness 0,050 mm, width 100 mm, roll:

Foil of 99.99 3l 0,05x100 R GOST 24552−2014

5 Technical requirements

5.1 Main parameters and characteristics (properties)

5.1.1 Foil of gold, silver, and alloys on their basis (hereinafter foil) must comply with the requirements of this standard and be manufactured according to the technological regulations approved in the prescribed manner.

5.1.2 the size of the foil is produced in rolls and limit deviations should conform to the values specified in table 1.


Table 1

In millimeters

Thickness		Width		Length, not less than
Nominal	Limit deviation	Nominal	Limit deviation
From 0.010 to 0.020 incl.	±0,002	100, 122, 125	±1	1500
SV. Value 0.020 to 0.050 incl.	±0,003
SV. To 0,050 0,090 incl.	±0,004
Note — By agreement with consumer it is allowed manufacture of foils of different width, length, and/or other limiting disabilities

5.1.3 foil Thickness, made in sheets and maximum deviations in thickness shall conform to the values specified in table 2.


Table 2

In millimeters

Thickness
Nominal	Limit deviation
From 0,005 to 0,007 incl.	±0,001
SV. From 0.007 to 0.020 incl.	±0,002
SV. Value 0.020 to 0.050 incl.	±0,003
SV. To 0,050 0,090 incl.	±0,004
Note — By agreement with consumer it is allowed manufacture of the foil with the other extreme deviations.

5.1.4 the Width and length of foil, made in sheets and maximum deviations in it depending on thickness shall conform to the values specified in table 3.


Table 3

In millimeters

Nominal thickness	Width		Length
Nominal	Limit deviation	Nominal	Limit deviation
From 0,005 to 0,007 incl.	20, 40	±2	60−120	±3
SV. From 0.007 to 0.020 incl.	100, 120, 125	125−150
SV. Value 0.020 to 0.050 incl.	100, 125, 150	±2	150−200	±3
SV. To 0,050 0,090 incl.
Notes: 1 Foil of alloy grade Pdsrm 60−36 produce a width not exceeding 100 mm. 2 By agreement with consumer it is permitted to manufacture different foil widths and lengths and/or other extreme deviations.

5.1.5 Calculation mass of a 1 cmfoil of gold, silver and alloys based on them are given in Appendix A.

5.1.6 Chemical composition of the foil for technical purposes must comply with GOST 6835, 6836 GOST, for jewelry production — GOST 30649.

Note — By agreement with consumer it is allowed manufacture of foil from other alloys based on gold and silver.

5.1.7 Foil manufactured in hard (unannealed) condition.

5.1.8 foil Surface should not have cracks, captivity, stratifications and traces of grease.

Permitted surface damage (dents, scratches, folds, traces of Stripping), not bringing the foil over the limit deviations on thickness and also color of a tint, a local darkening, waviness, traces of mild bends and small prints from the rolls.

On the foil with thickness less than 0.03 mm are permitted single holes (dircetory) in the absence of local congestion and line location.

5.1.9 Foil should be trimmed evenly and should not have flaws on the edges.

5.1.10 Foil in coil is wound on a metal sleeve.

5.1.11 Physico-mechanical properties of the foil are given in Appendix B.

Properties of jewellery alloys based on gold and silver is given in GOST 30649.

5.2 Labeling, packaging

5.2.1 coding foil is not made.

5.2.2 Each roll is wrapped in foil and each foil sheet shift the tissue paper according to GOST 3479 and combined into packages.

The rolls of foil packets and foil, interleaved with cardboard according to GOST 9347 or plywood, wrapped in paper according to GOST 8273 and pack in solid wooden (plastic) boxes. The free space in the box filled with soft packing material to protect the foil during transport from mechanical damage. Allowed boxes to be placed in cloth bags.

Can be applied to other types and materials of packaging, ensuring the safety of the foil during transportation and storage.

5.2.3 Boxes (bags) sealed or sealed. The seal (stamp) needs to have a clear impression.

5.2.4 In each case attached to the bag tag point:

— the name of the consumer;

— the net mass, g;

— gross mass, g;

— the parcel number.

Additionally, the tag may contain other necessary information (for example, the value of the parcel, the name of the manufacturer and his address, registry, prints of the seals, the index of the storeman-packer, quality control Department stamp, etc.).

Allowed transport marking under GOST 14192 with the indication of manipulation sign «Fragile. Caution."

5.2.5 gross Mass of the packing space should not exceed 10 kg.

5.2.6 Each shipment of foil is accompanied by a document about quality that contains:

is the trademark or name and trademark of manufacturer;

— the symbol foil;

— the batch number;

— chemical composition;

— the net weight of the batch, g;

— the month and year of manufacture;

— stamp of quality control.

The document about quality invest in a package with accompanying documentation.

6 acceptance Rules

6.1 Foil take parties. The party should consist of foil the same size and same grade of steel or alloy. The weight of the batch is not limited.

6.2 dimensional control and surface quality of the foil is carried out on each coil or 25% of the leaves from the party foil, but no less than five sheets.

If unsatisfactory results of the inspection of dimensions and surface quality on at least one sheet of foil, repeat tests are carried out at twice the number of sheets of foil selected from the same batch. The results of repeated tests apply to the entire party.

6.3 To check the chemical composition of a consumer selects three sheets of foil from the party, manufacturer — a sample from each heat.

If unsatisfactory results on the chemical composition of it is carried out re-testing at twice the sample or the sample taken from the same batch. The results of repeated tests apply to the entire party.

6.4 Physico-mechanical properties of the foil are given in Appendix B are for reference purposes only and are not controlled.

6.5 checking the packaging and the gross mass of the packing is subjected to every place.

7 control Methods

7.1 the Width and length of the foil is measured with a metal ruler according to GOST 427 or caliper according to GOST 166.

The thickness of the foil in the coil is measured at a distance of not less than 100 mm from the end of the roll and not less than 10 mm from the edge, the thickness of the foil in sheets — not less than 25 mm from the vertex of the angle and not less than 15 mm spring-steel head for GOST 28798 with the rack according to GOST 10197.

The measurement is required for both ends and the middle part of the foil sheet.

The thickness of the foil width up to 40 mm measured in the middle part.

Allowed the use of other measuring instruments providing the required accuracy.

7.2 Control of the surface quality of the foil produced by inspection without the use of magnifying devices. The presence of through-holes are in control of watching the foil on the light screen.

7.3 the Mass of the foil is determined on laboratory weights according to GOST 24104, the gross weight of the boxes — on weights according to GOST 29329.

7.4 Chemical composition determines:

— gold — GOST 27973.0, GOST 27973.1, 27973.2 GOST, GOST 27973.3;

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

alloys based on gold — GOST 12562.1, 12562.2 GOST, GOST 12563.1, 12563.2 GOST, GOST 12564.1, 12564.2 GOST, GOST 17234, 17235 GOST, GOST 22864;

— alloys based on silver — GOST 12555.1, 12555.2 GOST, GOST 12558.1, 12558.2 GOST, GOST 12561.1, 12561.2 GOST, GOST 16321.1, 16321.2 GOST, GOST 22864.

Allowed determination of the chemical composition to perform other techniques, certified in the prescribed manner and satisfies the requirements of this standard.

7.5 Marking and packaging checks visual inspection.

8 Transportation and storage

8.1 Transportation, storing and accounting of the foil is carried out in accordance with the order of storage, transportation and accounting of precious metals.

8.2 transport and storage the foil must be protected against dirt, mechanical damage, moisture, corrosive environments, fume sulfur compounds.

Storage conditions in climatic factors 1.1 in accordance with GOST 15150, conditions for transportation — 3 according to GOST 15150.

9 manufacturer’s Warranty

The manufacturer guarantees the conformity of the chemical composition and the size of foil of gold, silver, and alloys on their basis the requirements of this standard, under the conditions of transportation and storage prescribed by this standard.

Warranty period of storage of the foil 15 years from the date of manufacture.

Annex a (informative). Estimated weight of 1 cm foil of gold, silver and alloys based on them

Appendix A
(reference)

Table A. 1

Foil thickness, mm	Estimated weight of 1 cmfoil of gold, silver and alloys based on them, g
PLN 99.99; 99.9 3l	Slsr 75−25	Clsrm 58.5−8	Clsrm 58.5−20	SR 99.99; 99.9 MS	SRM 92,5	SRM 87.5	SRM 50
0,005	0,0097	0,0080	0,0066	0,0068	0,0053	0,0052	0,0051	0,0048
0,007	0,0135	0,0112	0,0093	0,0095	0,0074	0,0073	0,0072	0,0068
0,010	0,0193	0,0160	0,0132	0,0136	0,0105	0,0104	0,0103	0,0097
0,015	0,0290	0,0239	0,0199	0,0204	0,0158	0,0156	0,0154	0,0145
0,020	0,0386	0,0319	0,0265	0,0272	0,0210	0,0208	0,0206	0,0193
0,025	0,0483	0,0399	0,0331	0,0340	0,0263	0,0260	0,0257	0,0242
0,030	0,0579	0,0479	0,0397	0,0408	0,0315	0,0312	0,0308	0,0290
0,040	0,0772	0,0638	0,0530	0,0544	0,0420	0,0416	0,0411	0,0386
0,050	0,0965	0,0798	0,0662	0,0680	0,0525	0,0521	0,0514	0,0483
0,060	0,1158	0,0958	0,0794	0,0816	0,0630	0,0625	0,0617	0,0580
0,070	0,1351	0,1117	0,0927	0,0952	0,0735	0,0729	0,0720	0,0676
0,080	0,1544	0,1277	0,1059	0,1088	0,0840	0,0833	0,0822	0,0773
0,090	0,1737	0,1436	0,1192	0,1224	0,0945	0,0937	0,0925	0,0869

Annex B (reference). Physico-mechanical properties of foils of gold, silver and alloys based on them

Appendix B
(reference)

Table B. 1

Mark metal, alloy	The calculated density, g/cm	Melting point (range), °C	Hardness HV, MPa (kgs/mm)
99,99 Zł; PLN 99,9	19,30	1063	490 (50)
Slsr 75−25	Of 15.96	1040−1045	1130 (115)
Slsr 60−40	14,45	1026−1030	1130 (115)
Clsrm 75−12,5	15,45	885−900	2650 (270)
Clsrm 58,5−8	Of 13.24	880−905	2650 (270)
Clsrm 58,5−20	13,60	830−845	2650 (270)
To 99.99 MS; MS To 99.9	10,50	962	780 (80)
SRM 92,5	10,36	779−896	1670 (170)
SRM 91,6	10,35	779−888	1130 (115)
SRM 90	10,32	779−875	1670 (170)
SRM is 87.5	Of 10.28	779−855	1690 (172)
Note — hardness test were conducted on samples with a thickness of 0.3−1.5 mm with a degree of deformation of 60% -80%.