GB/T 1777-2025 Superfine palladium 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 1777-2025
Replaces GB/T 1777-2009
Superfine Palladium 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
7 Inspection Rules
1 Scope
This document specifies the classification, designation, technical requirements, marking, packaging, transportation, storage, accompanying documents and order content for superfine palladium powder, and describes the test methods and inspection rules.
This document applies to superfine palladium powder used in the electronics industry.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute essential provisions of this document. 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 1420—2015 Sponge palladium
GB/T 1479.1 Metallic powders - Determination of apparent density - Part 1: Funnel method
GB/T 1774—2009 Superfine silver powder
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
YS/T 362 Emission spectrographic analysis of impurity elements in pure palladium
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Superfine palladium powder
Palladium powder with spherical or near-spherical particle morphology at micrometer or sub-micrometer scale.
4 Classification and Designation
4.1 Product Classification
According to average particle size (D50), products are classified into three grades based on the upper limit of D50:
PPd-1.0 (D50 ≤ 1.0 μm)
PPd-3.0 (D50 ≤ 3.0 μm)
PPd-6.0 (D50 ≤ 6.0 μm)
4.2 Product Designation
Products shall be designated by this standard number and product classification.
Example:
Superfine palladium powder with D50 upper limit of 1.0 μm conforming to this document is designated as: GB/T 1777-PPd-1.0
GB/T 1777-2025 Superfine palladium 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 1777-2025
Replaces GB/T 1777-2009
Superfine Palladium 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
7 Inspection Rules
1 Scope
This document specifies the classification, designation, technical requirements, marking, packaging, transportation, storage, accompanying documents and order content for superfine palladium powder, and describes the test methods and inspection rules.
This document applies to superfine palladium powder used in the electronics industry.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute essential provisions of this document. 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 1420—2015 Sponge palladium
GB/T 1479.1 Metallic powders - Determination of apparent density - Part 1: Funnel method
GB/T 1774—2009 Superfine silver powder
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
YS/T 362 Emission spectrographic analysis of impurity elements in pure palladium
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Superfine palladium powder
Palladium powder with spherical or near-spherical particle morphology at micrometer or sub-micrometer scale.
4 Classification and Designation
4.1 Product Classification
According to average particle size (D50), products are classified into three grades based on the upper limit of D50:
PPd-1.0 (D50 ≤ 1.0 μm)
PPd-3.0 (D50 ≤ 3.0 μm)
PPd-6.0 (D50 ≤ 6.0 μm)
4.2 Product Designation
Products shall be designated by this standard number and product classification.
Example:
Superfine palladium powder with D50 upper limit of 1.0 μm conforming to this document is designated as: GB/T 1777-PPd-1.0
