GB/T 223.3-2026Iron, steel and alloy - Determination of phosphorus content - Spectrophotometric method, titrimetric method and gravimetric method (English PDF)
钢铁及合金 磷含量的测定 分光光度法、滴定法和重量法
Also coversGB/T223.3-2026 + GBT223.3-2026
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 28, 2026
Implementation date
April 1, 2027
Scope
GB/T 223.3-2026 is the English-translated version of 钢铁及合金 磷含量的测定 分光光度法、滴定法和重量法.
This recommended national standard deals with the determination of phosphorus content in iron, steel and alloys, and it lays out three analytical routes: a spectrophotometric method, a titrimetric method and a gravimetric method. Phosphorus is a closely watched residual or alloying element in ferrous metallurgy, so the document is aimed at the chemical analysis laboratories of steel mills, foundries, alloy producers, independent testing houses and receiving-inspection departments that need to report phosphorus consistently. Having several methods in one document lets a laboratory choose the technique that suits its sample type and equipment.
The document was issued on 28 September 2026 and takes effect on 1 April 2027. It replaces GB/T 223.59-2008. It is published under the responsibility of the China Iron and Steel Association and is relevant to anyone who must align phosphorus results with current Chinese practice for material certificates, supplier acceptance or dispute testing.
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Document preview — GB/T 223.3-2026
National Standard of the People's Republic of China
- ICS
- 77.080.01
- Classification
- H11
- Replacing
- GB/T 223.59-2008
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 223.3-2026 is a recommended national standard (GB/T) of the People's Republic of China, issued on 28 September 2026 by the State Administration for Market Regulation and the Standardization Administration of China, with effect from 1 April 2027.
This edition replaces GB/T 223.59-2008.
The document adopts an international standard (ISO or IEC).
It is under the responsibility of the China Iron and Steel Association.
Classification: ICS 77.080.01; CCS H11.
1 Scope
This recommended national standard deals with the determination of phosphorus content in iron, steel and alloys, and it lays out three analytical routes: a spectrophotometric method, a titrimetric method and a gravimetric method. Phosphorus is a closely watched residual or alloying element in ferrous metallurgy, so the document is aimed at the chemical analysis laboratories of steel mills, foundries, alloy producers, independent testing houses and receiving-inspection departments that need to report phosphorus consistently. Having several methods in one document lets a laboratory choose the technique that suits its sample type and equipment.
The document was issued on 28 September 2026 and takes effect on 1 April 2027. It replaces GB/T 223.59-2008. It is published under the responsibility of the China Iron and Steel Association and is relevant to anyone who must align phosphorus results with current Chinese practice for material certificates, supplier acceptance or dispute testing.
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 26648-2026Austenitic iron castings
- GB/T 8602-2026Rough-rolled tyres for railway use
- GB/T 20932-2025Pig-irons - Definition and classification
- GB/T 24595-2025Hot-rolled steel bars for quenched and tempered crankshafts
- GB/T 4354-2025Hot-rolled quality carbon steel wire rods
- GB/T 45134-2025Petroleum drilling and production equipment - Near-bit geosteering drilling systems
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Editions of GB/T 223.3
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 223.3-2026 | Iron, steel and alloy - Determination of phosphorus content - Spectrophotometric method, titrimetric method and gravimetric method | current edition | Current |
| GB/T 223.59-2008 | Iron, Steel and Alloy - Determination of Phosphorus Content - Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate Blue Spectrophotometric Method | previous edition | In force until 1 April 2027 |
This page sells the current edition, GB/T 223.3-2026. Earlier editions are listed for reference only.
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