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1、INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDlZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXJJYHAPOaHAfl OPTAHM3AMR l-l0 CTAHAPTM3AMM Colours of gold alloys - Definition, range of colours and designation Couleurs des alliages dor - Definition, gamme de couleurs et dhsigna t
2、ion ISO 8654 First edition 1987-08-15 Reference number ISO 8654: 1987 (E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted with
3、out license from IHS -,-,- Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bedies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested
4、 in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take patt in the work. Draft International Standards adopted by the technical committees a
5、re circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8654 was prepared by Technical Committee
6、 ISO/TC 174, Jewellery. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its Jatest edition, unless otherwise stated. 0 International Organization for Standardkation, 1987 Printed in S
7、witzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 6654 : 19
8、87 (E) Colours of gold alloys - Definition, range of colours and designation 0 Introduction In the manufacture and sale of articles made of or coated with gold alloy, the colour of the surface of the product is an impor- tant characteristic. However, at present, an undue variety of colours of surfac
9、e finishes is offered to the public. Some of these colours differ only slightly from one another. The range of colours defined in this International Standard is in- tended to enable the manufacturer to limit the stock of different colours that he might be obliged to keep. lt will also enable the pur
10、chaser to define his requirements with precision by referring to the designations given within this International Standard and so avoid the need for purchasing orders to be accompanied by colour samples. 1 Scope and fieid of application This International Standard specifies a limited number of colou
11、rs of gold alloys. By specifying a range of gold alloy colours, this International Standard enables a corresponding range of polished gold colour Slips to be produced for comparison purposes for use in routine transactions between manufacturer and purchaser. lt applies to jewellery, and to watch cas
12、es and accessories made of gold alloys or watch cases and accessories with gold alloy coverings. 2 References CIE Publication No. 15, Colorimetry. CIE Publication No. 38, Radiometric and photometric charac- teristics of materiak and their measurement. 3 Definition colour of gold alloy : A three-dime
13、nsional colour space represented by the chromaticity co-ordinates x and y and reflectance e, in accordance with CIE Publication No. 15. NOTE - When necessary for special purposes or in the fiel! national Standardkation, the chromaticity co-ordinates may be verted to other internationally or national
14、ly agreed Systems CIE 1976 L*a*b* colour space or CIE 1976 L*u*v* colour space) d of con- (e.g. 4 Range of colours and designation The range of colours according to chromaticity co-ordinates are given in table 1. 5 Measurement method 5.1 Preparation of the samples The samples to be measured shall ha
15、ve a polished surface. The finishing shall be continued until a constant reflectance grade has been achieved. 5.2 Apparatus 5.2.1 Integrating sphere spectrophotometer. 5.2.2 Standard illuminant, comprising a light Source yielding the spectral distribution similar to that of the Standard light Source
16、 D 65 (daylight) specified in CIE Publication No. 15. 5.3 Test procedure Measure the spectral reflectance in accordance with CIE Publication No. 38. 6 Colour Slips For comparison purposes in routine transactions, it is recom- mended that a range of polished gold alloy colour Slips should be used tha
17、t are prepared so that the colour of the sur-face of each colour Slip accords with the chromaticity co-ordinates given in table 1 when measured in accordance with clause 5. See the annex for the recommended Chemical composition of colour Slips. 1 Copyright International Organization for Standardizat
18、ion Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 8654: 1987 (El Table 1 IN 0,352 6 0,370 0 0,82 0,348 6 0,368 5 (pale yellow) 0,352 7 0,373 0 0,3
19、55 7 0,371 7 0 r 82 +o,ol -0,08 0,351 3 0,367 4 2N 0,359 0 0,376 6 0,82 0,355 8 0,376 4 (light yellow) 0,360 0 0,381 0 +o,ol 0,363 5 0,379 5 0 1 82 -0,08 0,359 0 0,375 0 3N 0,360 1 0,372 9 0,79 0,357 8 0,372 4 (yeliow) 0,362 3 0,376 7 0 79 +O,OJ 0,366 3 0,3748 -0,05 0,361 4 0,370 7 4N 0,361 2 0,365
20、9 0,76 0,357 7 0,366.O (pink) 0,362 6 0,370 1 +o,ol 0,366 3 0,368 2 0 76 -0,05 0,361 0 0,364 4 5N 0,359 1 0,360 4 0,74 0,355 5 0,359 1 (red) 0,362 1 0,363 8 +QOl 0,366 0 0,361 6 0 74 -0,05 0,358 9 0,357 2 Copyright International Organization for Standardization Provided by IHS under license with ISO
21、 Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,- I Annex Recommended chemical composition of colour Slips (This annex does not form an integral part of the standard.) For information purposes
22、 only, approximate values for the Chemical composition of relevant goid alloys which are recommended for preparing the colour Slips are given in table 2. NBTES 1 It is not possible to define the colour of a colour Slip by reference to the Chemical composition alone of the alloy used because the colo
23、ur of the surface of a gold alloy is also dependent upon its surface finish and metallurgical condition. 2 In making visual comparisons between samples and reference colour Slips, the surfaces should be viewed through translucent Paper. Tablle 2 2N 3M 4lV 5N 750 750 750 750 150 to 160 Balance 120 to
24、 130 85 to 95 45 to 55 1 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentiona
25、lly leff blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally lef% bla
26、nk Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO8654:1987 IE) UDC 671.1 : 669.215 : 535.6
27、4 Descriptors : jewels, gold alloys, colour, designation. Price based on 3 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 21:05:16 MDTNo reproduction or networking permitted without license from IHS -,-,-