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GB/T 26314-2010Designation and composition of zirconium and zirconium alloys (English PDF)

锆及锆合金牌号和化学成分

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

January 14, 2011

Implementation date

November 1, 2011

Scope

GB/T 26314-2010 is the English-translated version of 锆及锆合金牌号和化学成分.

GB/T 26314-2010 is the Chinese standard "Designation and composition of zirconium and zirconium alloys".

Its scope clause reads: This Standard specifies the designations, chemical compositions, chemical composition analysis, analysis report etc. of the cast ingots and processed products of zirconium and zirconium alloys for general industries and nuclear industry.

This Standard applies to the cast ingots and processed products of zirconium and zirconium alloys for general industries and nuclear industry. Its clauses include chemical compositions; chemical composition analysis and analysis report.

It was issued by the General Administration of Quality Supervision, Inspection and Quarantine on JANUARY 14, 2011 and took effect on NOVEMBER 1, 2011.

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Document preview — GB/T 26314-2010

National Standard of the People's Republic of China

ICS: 77.120
Classification: H 63

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword3
1 Scope4
2 Normative References4
3 Chemical compositions4
4 Chemical composition analysis and analysis report5
Annex A (Informative) Cross-references between the designations in this Standard and those in the former relevant national standard and the standards of ASTM and ASME8

1 Scope

This Standard specifies the designations, chemical compositions, chemical composition analysis, analysis report etc. of the cast ingots and processed products of zirconium and zirconium alloys for general industries and nuclear industry.

This Standard applies to the cast ingots and processed products of zirconium and zirconium alloys for general industries and nuclear industry.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to This Standard.

GB/T 8170, Rules of rounding off for numerical values and expression and judgement of limiting values

GB/T 13747 (all parts), Methods for chemical analysis of zirconium and zirconium alloys

3 Chemical compositions

3.1 Designations and chemical compositions

The designations and chemical compositions of zirconium and zirconium alloys shall be as specified in Table 1, including Zr-1, Zr-3 and Zr-5 for general industries, and Zr- 0, Zr-2 and Zr-4 for nuclear industry, but not limited to nuclear industry.

3.2 Other elements

3.2.1 Other elements refer to inherent microelements in the production process of zirconium and zirconium alloys, other than elements added artificially.

3.2.2 If the purchaser has any special requirement beyond those specified in Table 1, it shall be as agreed on by both sides and indicated in the contract, and the supplier shall carry out analysis of it.

3.2.3 Composition allowable deviations

When the purchaser takes samples from products for chemical composition retest, their composition allowable deviations shall be as specified in Table 2.

4 Chemical composition analysis and analysis report

4.1 The method for the arbitration analysis of element Nb in the chemical composition of zirconium and zirconium alloy products is as approved by both sides; and the analysis of other elements is as specified in GB/T 13747.

4.2 Unless specified otherwise in product standard, the supplier can take samples from cast ingots to carry out chemical composition analysis.

4.3 The second analysis is allowed for the chemical composition of zirconium and zirconium alloy products; and the result of the second analysis is deemed as the basis of final judgement.

4.4 The significant digits of the numerical results in the chemical composition analysis report shall be consistent with the significant digits of the corresponding boundary values in the chemical composition table. The digits behind the significant digits shall be rounded off as specified in GB/T 8170. […]

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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

Normative references

GB/T 8170Rules of rounding off for numerical values & expression and judgement of limiting values

GB/T 13747

Cited by

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