GB/T 1773-2025 Flake silver powder English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 77.150.99
CCS H68
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 1773-2025
Replaces GB/T 1773-2008
Flake Silver Powder
Issued on 2025-08-29
Implemented on 2026-03-01
Issued by
State Administration for Market Regulation
Standardization Administration of China
CONTENTS
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 Classification and Designation
5 Technical Requirements
6 Test Methods
1 Scope
This document specifies the classification, designation, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accompanying documents and order content for flake silver powder.
This document applies to flake silver powder used for electronic pastes.
2 Normative References
The following documents constitute indispensable provisions of this document through normative references. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 191 Pictorial markings for packing of goods
GB/T 1479.3 Metallic powders - Determination of apparent density - Part 3: Oscillating funnel method
GB/T 1774-2009 Ultrafine silver powder
GB/T 4309 Classification and designation of powder metallurgy materials
GB/T 5162 Metallic powders - Determination of tap density
GB/T 8170 Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 19077 Particle size analysis - Laser diffraction methods
GB/T 19445 Packaging, marking, transportation and storage of precious metals and their alloy products
GB/T 36590-2018 Methods for chemical analysis of high purity silver - Determination of trace impurity elements - Glow discharge mass spectrometry
3 Terms, Definitions and Symbols
3.1 Terms and Definitions
The following terms and definitions apply to this document.
3.1.1
flake silver powder
Silver powder with flake-shaped particle morphology.
3.2 Symbols
The following symbols apply to this document.
D10: Particle size at which 10% of the sample's cumulative particle size distribution is reached
D50: Particle size at which 50% of the sample's cumulative particle size distribution is reached (median diameter)
D90: Particle size at which 90% of the sample's cumulative particle size distribution is reached
4 Classification and Designation
4.1 Product Classification
According to the average particle size (D50), products are classified into 4 grades based on the upper limit of D50, designated as follows in accordance with GB/T 4309: PAg-S2.0, PAg-S6.0, PAg-S10.0, PAg-S15.0.
4.2 Product Designation
Flake silver powder products shall be designated by this standard number and grade designation.
Example:
Flake silver powder with D50 upper limit of 2.0 μm conforming to this document is designated as: GB/T 1773-PAg-S2.0.
GB/T 1773-2025 Flake silver powder English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 77.150.99
CCS H68
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 1773-2025
Replaces GB/T 1773-2008
Flake Silver Powder
Issued on 2025-08-29
Implemented on 2026-03-01
Issued by
State Administration for Market Regulation
Standardization Administration of China
CONTENTS
1 Scope
2 Normative References
3 Terms, Definitions and Symbols
4 Classification and Designation
5 Technical Requirements
6 Test Methods
1 Scope
This document specifies the classification, designation, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accompanying documents and order content for flake silver powder.
This document applies to flake silver powder used for electronic pastes.
2 Normative References
The following documents constitute indispensable provisions of this document through normative references. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 191 Pictorial markings for packing of goods
GB/T 1479.3 Metallic powders - Determination of apparent density - Part 3: Oscillating funnel method
GB/T 1774-2009 Ultrafine silver powder
GB/T 4309 Classification and designation of powder metallurgy materials
GB/T 5162 Metallic powders - Determination of tap density
GB/T 8170 Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 19077 Particle size analysis - Laser diffraction methods
GB/T 19445 Packaging, marking, transportation and storage of precious metals and their alloy products
GB/T 36590-2018 Methods for chemical analysis of high purity silver - Determination of trace impurity elements - Glow discharge mass spectrometry
3 Terms, Definitions and Symbols
3.1 Terms and Definitions
The following terms and definitions apply to this document.
3.1.1
flake silver powder
Silver powder with flake-shaped particle morphology.
3.2 Symbols
The following symbols apply to this document.
D10: Particle size at which 10% of the sample's cumulative particle size distribution is reached
D50: Particle size at which 50% of the sample's cumulative particle size distribution is reached (median diameter)
D90: Particle size at which 90% of the sample's cumulative particle size distribution is reached
4 Classification and Designation
4.1 Product Classification
According to the average particle size (D50), products are classified into 4 grades based on the upper limit of D50, designated as follows in accordance with GB/T 4309: PAg-S2.0, PAg-S6.0, PAg-S10.0, PAg-S15.0.
4.2 Product Designation
Flake silver powder products shall be designated by this standard number and grade designation.
Example:
Flake silver powder with D50 upper limit of 2.0 μm conforming to this document is designated as: GB/T 1773-PAg-S2.0.
