GB/T 1776-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1776-2025	RFQ	ASK	3 days	Superfine platinum powder	Valid
GB/T 1776-2009	139	Add to Cart	3 days	Superfine platinum powder	Valid
GB/T 1776-1995	199	Add to Cart	2 days	Superfine platinum powder	Obsolete
GB 1776-1988	RFQ	ASK	3 days	Superfine platinum powder	Obsolete

Basic data

Standard ID: GB/T 1776-2025 (GB/T1776-2025)
Description (Translated English): Superfine platinum powder
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 1776-2009

GB/T 1776-2009: Superfine platinum powder

---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.
Superfine platinum powder ICS 77.150.99 H68 National Standards of People's Republic of China Replacing GB/T 1776-1995 Superfine platinum powder Posted 2009-01-05 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 1776-1995 "superfine platinum powder." This standard compared with GB/T 1776-1995, the main changes are as follows. --- Original Standard Grades FPtH-1 revised PPt-3.0; --- Increasing the impurity elements of the maximum allowable amount of Cd, Pb harmful impurity element by the maximum allowable amount was revised to 0.005% 0.001%; --- Platinum powder surface area than the original larger than the standard 7.0m2/g was revised to 3.5m2/g ~ 7.0m2/g; --- Increasing the particle size characteristic parameters D10, D50, D90; --- Platinum powder bulk density of the original standard of 0.4g/cm3 ~ 0.7g/cm3 revised to 0.7g/cm3 ~ 1.0g/cm3; --- Platinum powder tap density of the original standard 0.7g/cm3 ~ 1.1g/cm3 revised to 1.0g/cm3 ~ 1.4g/cm3. The standard proposed by China Nonferrous Metals Industry Association. This standard Nonferrous Metals by the National Standardization Technical Committee. This standard is drafted by. Your research Platinum Limited. Participated in the drafting of this Standard. China Nonferrous Metals Industry Standards and Metrology Institute for Quality. The main drafters of this standard. Yang Wen, Yuqing Zhi, Zhang Xiaomin, Li Wenlin, Chen Fusheng, to Lei. This standard replaces the standards previously issued as follows. --- GB 1776-1988, GB/T 1776-1995. Superfine platinum powder

1 Scope

This standard specifies requirements for ultra-fine platinum powder, test methods, inspection rules and signs, packaging, transportation, storage, and purchase order (or contract) within Tolerance and so on. This standard applies to the electronics industry with ultra-fine platinum powder.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1419-2004 spongy platinum GB/T 1479 metal powder bulk density determination funnel method - Part 1 GB/T 1774-2009 silver powder Determination of GB/T 5162 metal powder tap density GB/T 15555.2 solid waste copper, zinc, lead, and cadmium - Atomic absorption spectrophotometry GB/T 18035 method of precious metals and their alloys GB/T 19077.1 laser diffraction particle size analysis

3 Requirements

3.1 Grades and marks 3.1.1 According to GB/T 18035 grade is expressed as. PPt-3.0. 3.1.2 Particle size distribution marked. D90 represents the cumulative 90% particle diameter at, D50 represents the cumulative particle diameter at 50%, D10 represents tired Plot in the particle size at 10%. 3.2 Chemical composition Superfine platinum powder chemical composition shall be in accordance with Table 1. Table 1% Pt content not less than Impurity content, not more than Pd Rh Ir Au Ag Cu Ni Fe Pb Al Si Cd Total amount of impurities (Mass fraction) no greater than 99.95 0.02 0.02 0.02 0.05 0.02 0.0050.0050.0050.0050.0010.0050.0050.001 NOTE. platinum mass fraction of impurities in the table minus one hundred percent real margin for the total. 3.3 The specific surface area, bulk density, tap density Superfine platinum powder specific surface area, bulk density, tap density should be in accordance with Table 2. Table 2 The specific surface area / (M2/g) Bulk density / (G/cm3) Tap density / (G/cm3) 3.5 ~ 7.0 1.0 ~ 0.7 1.0 ~ 1.4 ......

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