GB/T 1429-2025Proximate analysis of carbon materials (English PDF)
炭素材料工业分析方法
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Issued by
State Administration for Market Regulation; Standardization Administration of China
Level / Type
National · Recommended
Issue date
August 29, 2025
Implementation date
March 1, 2026
Scope
GB/T 1429-2025 is the English-translated version of 炭素材料工业分析方法.
GB/T 1429-2025 is the Chinese national standard on proximate analysis of carbon materials, in the field of electrical engineering.
The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up — which in practice is how most foreign buyers meet it.
It was issued on 29 August 2025 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 March 2026.
Classification: ICS 29.050, CCS Q50. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there.
The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.
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Document preview — GB/T 1429-2025
National Standard of the People's Republic of China
- ICS
- 29.050
- Classification
- Q50
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Sampling and sample preparation
- 5 Determination of the inherent moisture
- 6 Determination of the ash
- 7 Determination of the volatile matter
- 8 Calculation of the fixed carbon
- 9 Test report
3 Terms and definitions
4 Sampling and sample preparation
5 Determination of the inherent moisture
6 Determination of the ash
7 Determination of the volatile matter
8 Calculation of the fixed carbon
9 Test report
Foreword
This document was issued on 29 August 2025 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and has been in force since 1 March 2026.
It replaces GB/T 1429-2009.
Classification: ICS 29.050, CCS Q50.
About this edition
GB/T 1429-2025 is the current edition. It was issued on 29 August 2025 and has been in force since 1 March 2026, replacing GB/T 1429-2009.
GB/T 1429-2009 has been superseded: a specification that still cites it is citing a withdrawn edition.
The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one from the record of the Standardization Administration.
Classification and status
GB/T 1429-2025 is classified under ICS 29.050, in the field of electrical engineering. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.
Its Chinese Standard Classification code is CCS Q50. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.
The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 32158-2025Coal-based needle coke
- YB/T 081-2013Rule for rounding off of numerical values and judgement of testing values for technical standards of metallurgy
- YB/T 4338-2013High graphite content carbon electrode for submerged arc furnace
- YB/T 4384-2013Carbon substrate for solar power
- YB/T 4300-2012Large-sized graphite electrode for submerged arc furnace
- YB/T 4301-2012Carbon tamping paste for blast furnace
Similar standards
Editions of GB/T 1429
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 1429-2025 | Proximate analysis of carbon materials | current edition | Current |
| GB/T 1429-2009 | Carbon materials - Determination of the ash content | previous edition | Superseded |
| GB/T 24527-2009 | Carbon materials—Determination moisture in air-dried sample | merged into this edition | Superseded |
This page sells the current edition, GB/T 1429-2025. Earlier editions are listed for reference only.
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