oSIST prEN ISO 22764:2026
(Main)Jewellery and precious metals - Fineness of solders used with precious metal jewellery alloys (ISO 22764:2020)
Jewellery and precious metals - Fineness of solders used with precious metal jewellery alloys (ISO 22764:2020)
This document specifies the precious metal content in solders suitable for use in the production of jewellery made of precious metal alloys.
Schmuck und Edelmetalle - Feingehalt von Loten, die für Edelmetalllegierungen verwendet werden (ISO 22764:2020)
Joaillerie, bijouterie et métaux précieux - Titre des brasures utilisées pour les alliages de métaux précieux pour les articles de joaillerie et de bijouterie (ISO 22764:2020)
Nakit in plemenite kovine - Čistost spajkal, ki se uporabljajo pri zlitinah za nakit iz plemenitih kovin (ISO 22764:2020)
General Information
- Status
- Not Published
- Public Enquiry End Date
- 30-Jan-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 02-Dec-2025
- Due Date
- 21-Apr-2026
Overview
prEN ISO 22764 (ISO 22764:2020) - Jewellery and precious metals - Fineness of solders used with precious metal jewellery alloys - specifies the required precious-metal content (fineness) of solders intended for use in manufacturing and repairing jewellery made from gold, platinum, palladium and silver alloys. The standard ensures that solders do not reduce the declared fineness of the finished article and provides minimum fineness requirements by metal type.
Key topics and requirements
- Scope: Defines precious metal content in solders suitable for precious-metal jewellery alloys.
- Mean fineness requirement: Solders shall not reduce the measured mean fineness below the declared fineness of the article.
- Gold jewellery:
- Generally, solder must have at least the same fineness as the piece being soldered.
- Exceptions:
- Red and dark red gold alloys (ISO 8654) with fineness ≥ 750 ‰ may be soldered with a minimum 585 ‰ gold solder.
- Other gold alloys with fineness > 750 ‰ require minimum 750 ‰ gold solder.
- Gold chains made from wire < 1 mm diameter can be soldered with any solder, including non-gold solders.
- Platinum jewellery: Solder must have a minimum total precious metal content of 800 ‰.
- Palladium jewellery: Solder must have a minimum total precious metal content of 700 ‰.
- Silver jewellery: Solder must have a minimum fineness of 550 ‰ silver.
- Fineness determination: Analytical methods referenced are the relevant ISO test standards (see Related Standards).
Practical applications and users
- Jewellery manufacturers and bench jewellers: select appropriate solders to maintain hallmark/fineness compliance and to meet mechanical and visual expectations.
- Repair and restoration services: ensure repaired pieces retain declared precious-metal content and consumer trust.
- Assay offices and quality control laboratories: verify fineness using referenced determination methods and certify compliance.
- Solder suppliers and alloy formulators: design and label solders to meet minimum fineness requirements for target jewellery alloys.
- Regulatory bodies and hallmarking authorities: apply the standard when assessing conformity and trade practices.
Practical benefits include preserving declared metal content, avoiding contamination or downgrade of value, ensuring consistent appearance and performance, and meeting legal or consumer expectations for precious-metal jewellery.
Related standards
Key referenced test and complementary standards for fineness determination and colour/designation:
- ISO 11210, ISO 11426, ISO 11427, ISO 11490, ISO 11494, ISO 11495, ISO 13756, ISO 15093, ISO 15096
- ISO 8654 (colours of gold alloys), ISO 9202 (fineness of precious metal alloys)
Keywords: ISO 22764, prEN ISO 22764, fineness, solders, precious metal jewellery alloys, gold solder, platinum solder, palladium solder, silver solder, jewellery manufacturing, fineness determination.
Frequently Asked Questions
oSIST prEN ISO 22764:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Jewellery and precious metals - Fineness of solders used with precious metal jewellery alloys (ISO 22764:2020)". This standard covers: This document specifies the precious metal content in solders suitable for use in the production of jewellery made of precious metal alloys.
This document specifies the precious metal content in solders suitable for use in the production of jewellery made of precious metal alloys.
oSIST prEN ISO 22764:2026 is classified under the following ICS (International Classification for Standards) categories: 39.060 - Jewellery. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase oSIST prEN ISO 22764:2026 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2026
Nakit in plemenite kovine - Čistost spajkal, ki se uporabljajo pri zlitinah za nakit iz
plemenitih kovin (ISO 22764:2020)
Jewellery and precious metals - Fineness of solders used with precious metal jewellery
alloys (ISO 22764:2020)
Schmuck und Edelmetalle - Feingehalt von Loten, die für Edelmetalllegierungen
verwendet werden (ISO 22764:2020)
Joaillerie, bijouterie et métaux précieux - Titre des brasures utilisées pour les alliages de
métaux précieux pour les articles de joaillerie et de bijouterie (ISO 22764:2020)
Ta slovenski standard je istoveten z: prEN ISO 22764
ICS:
39.060 Nakit Jewellery
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 22764
First edition
2020-01
Jewellery and precious metals —
Fineness of solders used with precious
metal jewellery alloys
Joaillerie bijouterie et métaux précieux — Titre des brasures utilisées
pour les alliages de métaux précieux pour les articles de joaillerie et
de bijouterie
Reference number
ISO 22764:2020(E)
©
ISO 2020
ISO 22764:2020(E)
© ISO 2020
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Published in Switzerland
ii © ISO 2020 – All rights reserved
ISO 22764:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements with regard to fineness . 2
4.1 Mean fineness . 2
4.2 Gold jewellery . 2
4.3 Platinum jewellery . 2
4.4 Palladium jewellery . 2
4.5 Silver jewellery . 2
5 Determination of fineness . 2
Bibliography . 3
ISO 22764:2020(E)
Foreword
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was d
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