GB/T 223.78-2000Methods for chemical analysis of iron, steel and alloy. Curcumin spectrophotometric method for the determination of boron content (English PDF)
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Issued by
State Quality and Technical Supervision
Level / Type
National · Recommended
Issue date
October 25, 2000
Implementation date
September 1, 2001
Scope
GB/T 223.78-2000 (Methods for chemical analysis of iron, steel and alloy. Curcumin spectrophotometric method for the determination of boron content) is available as an English-translated PDF.
GB/T 223.78-2000 — This standard specifies: spectrophotometric determination of boron in steel curcumin directly. This standard applies to: steel 0. 0005% (m/m) ~ O. 012% (m/m) and non- alloy steel 0. 0001% (m/m) ~ 0. 0005% (m/m) of boron content determined.
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Document preview — GB/T 223.78-2000
National Standard of the People's Republic of China
- ICS
- 77.080
- Classification
- H 11
- Replacing
- GB/T 223.6-1981
Issued by: State Quality and Technical Supervision
Contents
- What this standard covers1
- Document data2
What this standard covers
This standard specifies: spectrophotometric determination of boron in steel curcumin directly. This standard applies to: steel 0. 0005% (m/m) ~ O. 012% (m/m) and non- alloy steel 0. 0001% (m/m) ~ 0. 0005% (m/m) of boron content determined.
Document data
International classification (ICS): 77.080.
Chinese classification (CCS): H11.
Estimated length of the Chinese original: 14,149 words.
Adopted international standard: ISO 10153-1997; IDT.
Supersedes the earlier edition GB/T 223.6-1981.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.
Referenced standards
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- GB/T 46599-2025Steel pipe for gaseous hydrogen storage and transportation pipelines
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GB/T 223.12-1991 — Methods for chemical analysis of iron, steel and alloy. The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
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GB/T 223.78-2000
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