GB/T 4236-2025Steel-examination by sulphur print (English PDF)
钢的硫印检验方法
Also coversGB/T4236-2025 + GBT4236-2025
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 29, 2025
Implementation date
March 1, 2026
Scope
GB/T 4236-2025 is the English-translated version of 钢的硫印检验方法.
Sulphur printing is a macro-examination technique that reveals how sulphide inclusions are distributed across a steel section. This standard describes the examination of steel by sulphur print, giving metallurgists and quality laboratories a recognised national reference for carrying out and interpreting the test.
It is used by steelmakers checking segregation and sulphide distribution in billets, blooms and forgings, by testing laboratories that report on steel quality, and by purchasers who include sulphur print examination in their material specifications. Technical staff in forging and heavy fabrication plants may also refer to it when investigating the soundness of a product.
The standard was issued on 29 August 2025 and takes effect on 1 March 2026, replacing GB/T 4236-2016. As a recommended national standard it is voluntary, but it is commonly invoked by product standards and supply agreements. Laboratories whose procedures still cite the 2016 edition should update their documented methods once the new edition applies.
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Document preview — GB/T 4236-2025
National Standard of the People's Republic of China
- ICS
- 77.040.99
- Classification
- H24
- Replacing
- GB/T 4236-2016
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
Foreword
GB/T 4236-2025 is a recommended national standard (GB/T) of the People's Republic of China, issued on 29 August 2025 by the State Administration for Market Regulation and the Standardization Administration of China, with effect from 1 March 2026.
This edition replaces GB/T 4236-2016.
The document adopts an international standard (ISO or IEC).
It is under the responsibility of the China Iron and Steel Association.
Classification: ICS 77.040.99; CCS H24.
1 Scope
Sulphur printing is a macro-examination technique that reveals how sulphide inclusions are distributed across a steel section. This standard describes the examination of steel by sulphur print, giving metallurgists and quality laboratories a recognised national reference for carrying out and interpreting the test.
It is used by steelmakers checking segregation and sulphide distribution in billets, blooms and forgings, by testing laboratories that report on steel quality, and by purchasers who include sulphur print examination in their material specifications. Technical staff in forging and heavy fabrication plants may also refer to it when investigating the soundness of a product.
The standard was issued on 29 August 2025 and takes effect on 1 March 2026, replacing GB/T 4236-2016. As a recommended national standard it is voluntary, but it is commonly invoked by product standards and supply agreements. Laboratories whose procedures still cite the 2016 edition should update their documented methods once the new edition applies.
Remaining clauses in the full document
- 2 Normative references
- 3 Terms and definitions
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 40304-2021Determination of content of nonmetallic inclusions in steel—Billet full section method
- DL/T 884-2019Power plant metallography inspection and assessment guideline
- WS/T 655-2019Safety Management for Lung Ventilator
- GB/T 33212-2016Steel open die forgings on hammer—General specifications
- YB/T 4003-2016Standard diagrams for macrostructure and defect in continuous casting slab
- GB/T 21834-2008Medium and low alloy steel - Determination of the distribution of multi-element contents - Original position statistic distribution analysis method
Editions of GB/T 4236
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4236-2025 | Steel-examination by sulphur print | current edition | Current |
| GB/T 4236-2016 | Steel examination by sulphur print (Baumann method) | previous edition | In force until 1 March 2026 |
This page sells the current edition, GB/T 4236-2025. Earlier editions are listed for reference only.
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