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YS/T 1168-2016: Germanium alloy for jewelry
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YS/T 1168-2016 | English | 139 |
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Germanium alloy for jewelry
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YS/T 1168-2016
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Basic data | Standard ID | YS/T 1168-2016 (YS/T1168-2016) | | Description (Translated English) | Germanium alloy for jewelry | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H66 | | Classification of International Standard | 77.150.99 | | Word Count Estimation | 6,650 | | Date of Issue | 2016-07-11 | | Date of Implementation | 2017-01-01 | | Regulation (derived from) | Notice of the Ministry of Industry and Information Technology (2016 No. 37) | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality certificate and order form (or contract) of the bismuth alloy for jewelry. | YS/T 1168-2016: Germanium alloy for jewelry---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Germanium alloy for jewelry
ICS 77.150.99
H66
People's Republic of China Nonferrous Metals Industry Standard
Jewelry alloy for jewelry
Released on.2016-07-11
2017-01-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and managed by the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
This standard was drafted. Yunnan Tianhao Rare Precious Metal Co., Ltd., Kunming Metallurgical Research Institute, Kunming Haoke Medical Technology Co., Ltd.
Yunnan Xinyuan Haoye Technology Co., Ltd.
The main drafters of this standard. Sun Haoran, Chen Zhizuo, Li Gang, Huang Yunfeng, Xie Zhenyu, Yuan Wei, Hu Wenxiong, Bao Mingzhu, Ren Shuopeng.
Jewelry alloy for jewelry
1 Scope
This standard specifies the requirements, test methods, inspection rules and signs, packaging, transportation and storage of niobium alloys for jewelry (hereinafter referred to as niobium alloys).
Deposit, quality certificate and order form (or contract) content.
This standard applies to the production of enamel alloys for jewelry.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 228.1 tensile testing of metallic materials - Part 1
3 requirements
3.1 Chemical composition
The chemical composition of niobium alloys shall comply with the requirements of Table 1. When the demander has special requirements for chemical composition, it shall be determined by both parties.
Indicated in the order form (or contract).
Table 1 Chemical composition
Code
Chemical composition (mass fraction) /%
Ge Fe Cr Cu Ni
Ge-10 9.5~10.5 59.5~60.5 9.5~10.5 9.5~10.5 7.5~8.5
3.2 Mechanical properties
The tensile mechanical properties at room temperature of niobium alloys are to comply with the requirements of Table 2.
Table 2 Mechanical properties
status
Tensile strength Rm/MPa Elongation after break A50mm/%
not less than
Casting state 110 2.0
3.3 sweat resistance
The niobium alloy should be free from discoloration when it is eroded by sweat.
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