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GB/T 26314-2010 PDF in English


GB/T 26314-2010 (GB/T26314-2010, GBT 26314-2010, GBT26314-2010)
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GB/T 26314-2010: PDF in English (GBT 26314-2010)

GB/T 26314-2010
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120
H 63
Designation and composition of
zirconium and zirconium alloys
ISSUED ON. JANUARY 14, 2011
IMPLEMENTED ON. NOVEMBER 1, 2011
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Chemical compositions ... 4 
4 Chemical composition analysis and analysis report ... 5 
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 ASME ... 8 
Designation and composition of
zirconium and zirconium alloys
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.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.