GB/T 1777: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 1777-2025 | English | RFQ |
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Superfine palladium powder
| Valid |
GB/T 1777-2025
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| GB/T 1777-2009 | English | 139 |
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Superfine palladium powder
| Valid |
GB/T 1777-2009
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| GB/T 1777-1995 | English | 199 |
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Superfine palladium powder
| Obsolete |
GB/T 1777-1995
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| GB 1777-1988 | English | RFQ |
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Superfine palladium powder
| Obsolete |
GB 1777-1988
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Basic data | Standard ID | GB/T 1777-2025 (GB/T1777-2025) | | Description (Translated English) | Superfine palladium powder | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 1777-2009 | GB/T 1777-2009: Superfine palladium powder---This is a DRAFT version for illustration, not a final translation.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 palladium powder
ICS 77.150.99
H68
National Standards of People's Republic of China
Replacing GB/T 1777-1995
Ultra-fine palladium 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 1777-1995 "ultra-fine palladium powder."
This standard compared with GB/T 1777-1995, the main changes are as follows.
--- Original Standard Grades FPdH-1 revised PPd-6.0.
--- Cd increased impurity elements of the maximum allowable amount.
--- Harmful impurity elements Pb maximum amount allowed by the revised 0.005% 0.001%.
--- Palladium powder specific surface area of \u200b\u200bthe original standard 3.0m2/g ~ 4.5m2/g was revised to 8.0m2/g ~ 12.0m2/g.
--- Increasing the particle size characteristic parameters D10, D50, D90.
--- Palladium powder bulk density of the original standard of 0.70g/cm3 ~ 0.90g/cm3 revised to 0.30g/cm3 ~ 0.40g/cm3.
--- Palladium powder tap density of the original standard 1.00g/cm3 ~ 1.25g/cm3 revised to 0.40g/cm3 ~ 0.60g/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. Yuqing Zhi, Zhang Xiaomin, Yang Wen, Li Wenlin, Chen Fusheng, to Lei.
This standard replaces the standards previously issued as follows.
--- GB 1777-1988, GB/T 1777-1995.
Ultra-fine palladium powder
1 Scope
This standard specifies requirements for ultra-fine palladium powder, test methods, inspection rules and signs, packaging, transportation, storage, and purchase order (or contract) within
Tolerance and so on.
This standard applies to electronic pulp powder and other products using palladium with palladium 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 1420-2004 palladium sponge
Determination of GB/T 1479 metal powder bulk density - Part 1. funnel method
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. PPd-6.0.
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
Chemical composition of ultra-fine palladium powder shall meet the requirements in Table 1.
Table 1%
Pd content
(Mass fraction)
not less than
Impurity content (mass fraction), not more than
Pt 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. The palladium content of impurities in the table minus one hundred percent real margin for the total.
3.3 The specific surface area, bulk density, tap density
Ultra-fine palladium 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)
8.0 to 12.0 0.30 to 0.40 0.40 to 0.60
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