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YB/T 081-2013: Rule for rounding off of numerical values and judgement of testing values for technical standards of metallurgy Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid YB/T 081: Historical versions
YB/T 081-2013: Rule for rounding off of numerical values and judgement of testing values for technical standards of metallurgy---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/YBT081-2013 YB BLACK METALLURGICAL INDUSTRY STANDARD ICS 03.120.30 H 00 Replacing YB/T 081-1996 Rule for rounding off of numerical values and judgment of testing values for technical standards of metallurgy Issued on. APRIL 25, 2013 Implemented on. SEPTEMBER 1, 2013 Issued by. Ministry of Industry and Information Technology of the People's Republic of China Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4.Rounding-off rules of testing values or its calculated values in technical standards of metallurgy... 4 5 The comparison method between testing values or its calculated values and numerical value limit specified by the standard... 5 6.Rounding-off key points of the testing values or its calculated value of various performance in technical standards of metallurgy... 7 7 The coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter values... 8ForewordThis standard is drafted according to the rules given in GB/T 1.1 2009. This standard replaces YB/T 081 1996 "Rule for rounding off of numerical values and judgment of testing values for technical standards of metallurgy". As compared with YB/T 081 1996, the main technical changes are as follows. -- Add "terms and definitions" (see Chapter 3); -- Delete the relevant requirements of carrying out numerical values rounding-off department (see 1996 version 3.14 and 3.1.5); -- Modify the compiling format of judgment method of numerical values (see Chapter 5, 1996 version 3.2); -- Modify the coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter values (see Chapter 7, 1996 version Chapter 5). This standard was proposed by China Iron and Steel Association. This standard shall be under the jurisdiction of National Steel Standardization Technical Committee (SAC/TC 183). The drafting organization of this standard. Metallurgical Industry Information Standards Institute. The main drafters of this standard. Yi Yan, Dai Qiang, Hou Jie. This standard was first released in May 1996. Rule for rounding off of numerical values and judgment of testing values for technical standards of metallurgy1 ScopeThis standard specifies the principle and the rounding-off key points of carrying out rounding off of numerical values and judgment of testing values or its calculated values in metallurgical standardization activities, and the coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter values. This standard applies to the compiling of all kinds of technical standards of metallurgy or relevant documents and the judgment of testing values or its calculated values.2 Normative referencesThe following documents are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1.Method of test at room temperature GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values3 Terms and definitionsTerms and definitions defined in GB/T 8170-2008 apply to this document. 4.Rounding-off rules of testing values or its calculated values in technical standards of metallurgy 4.1 In the activities of revising and implementing technical standards of metallurgy or related documents, determine a variety of indexes and parameters; for the testing values or its calculated values, when rounding off is required, determine the rounding intervals and rules according to the rules given in GB/T 8170-2008 Chapter 3; continuous rounding off is not permitted. 4.2 When testing values or its calculated values are rounded off, the numerical digit indicated for reserving numerical value shall be in accordance with the numerical digit identified by index or parameter values specified in product standards.5 The comparison method between testing values or its calculated values and numerical value limit specified by the standard5.1 General rules 5.1.1 In judging whether the testing values or its calculated values meet the standard requirements or not, compare the testing values or its calculated values obtained from the test with the numerical value limit specified by standards. The comparison method may adopt. 5.1.2 If the standard or relevant documents have provisions on the practical comparison method, it shall be implemented according to the provisions of the standard or relevant documents. If not specified, it is recommended to use rounding-off value comparison method. 5.2 Full numerical comparison method Compare the testing values or its calculated values which are not subjected to rounding off (or through rounding off, but it shall be marked that it is obtained through rounding-off or non-rounding-off) with the numerical value limit specified in the standard or the relevant documents. As long as it is beyond the scope of the numerical value limit (regardless of size of degree), it is judged to be unsatisfactory. Examples are shown in Table 1. 5.3 Rounding-off value comparison method 5.3.1 Round off the testing values or its calculated values, the rounding-off digits shall be in accordance with the numerical digit of specified numerical value limit. 6.2 Mechanical Property 6.2.1 If the standard or relevant documents do not specify the rounding interval, the tensile test results of metal materials shall be rounded off according to the provisions of Table 2. 6.3 Other mechanical property or physical property tests The testing values or its calculated values that are obtained in other mechanical property or physical property tests may be rounded off according to the provisions of corresponding test method standards. 6.4 Size measurement The results of size measurement shall be rounded off according to the numerical digit identified by the numerical values specified in the standard or relevant documents.7 The coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter valuesWhen revising and implementing technical standards of metallurgy or related documents, take fully into account the coordination of product standards and test method standards for the rounding interval of index or parameter values. YB/T 081-2013 YB BLACK METALLURGICAL INDUSTRY STANDARD ICS 03.120.30 H 00 Replacing YB/T 081-1996 Rule for rounding off of numerical values and judgment of testing values for technical standards of metallurgy Issued on. APRIL 25, 2013 Implemented on. SEPTEMBER 1, 2013 Issued by. Ministry of Industry and Information Technology of the People's Republic of ChinaTable of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4.Rounding-off rules of testing values or its calculated values in technical standards of metallurgy... 4 5 The comparison method between testing values or its calculated values and numerical value limit specified by the standard... 5 6.Rounding-off key points of the testing values or its calculated value of various performance in technical standards of metallurgy... 7 7 The coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter values... 8ForewordThis standard is drafted according to the rules given in GB/T 1.1 2009. This standard replaces YB/T 081 1996 "Rule for rounding off of numerical values and judgment of testing values for technical standards of metallurgy". As compared with YB/T 081 1996, the main technical changes are as follows. -- Add "terms and definitions" (see Chapter 3); -- Delete the relevant requirements of carrying out numerical values rounding-off department (see 1996 version 3.14 and 3.1.5); -- Modify the compiling format of judgment method of numerical values (see Chapter 5, 1996 version 3.2); -- Modify the coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter values (see Chapter 7, 1996 version Chapter 5). This standard was proposed by China Iron and Steel Association. This standard shall be under the jurisdiction of National Steel Standardization Technical Committee (SAC/TC 183). The drafting organization of this standard. Metallurgical Industry Information Standards Institute. The main drafters of this standard. Yi Yan, Dai Qiang, Hou Jie. This standard was first released in May 1996. Rule for rounding off of numerical values and judgment of testing values for technical standards of metallurgy1 ScopeThis standard specifies the principle and the rounding-off key points of carrying out rounding off of numerical values and judgment of testing values or its calculated values in metallurgical standardization activities, and the coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter values. This standard applies to the compiling of all kinds of technical standards of metallurgy or relevant documents and the judgment of testing values or its calculated values.2 Normative referencesThe following documents are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1.Method of test at room temperature GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values3 Terms and definitionsTerms and definitions defined in GB/T 8170-2008 apply to this document. 4.Rounding-off rules of testing values or its calculated values in technical standards of metallurgy 4.1 In the activities of revising and implementing technical standards of metallurgy or related documents, determine a variety of indexes and parameters; for the testing values or its calculated values, when rounding off is required, determine the rounding intervals and rules according to the rules given in GB/T 8170-2008 Chapter 3; continuous rounding off is not permitted. 4.2 When testing values or its calculated values are rounded off, the numerical digit indicated for reserving numerical value shall be in accordance with the numerical digit identified by index or parameter values specified in product standards.5 The comparison method between testing values or its calculated values and numerical value limit specified by the standard5.1 General rules 5.1.1 In judging whether the testing values or its calculated values meet the standard requirements or not, compare the testing values or its calculated values obtained from the test with the numerical value limit specified by standards. The comparison method may adopt. 5.1.2 If the standard or relevant documents have provisions on the practical comparison method, it shall be implemented according to the provisions of the standard or relevant documents. If not specified, it is recommended to use rounding-off value comparison method. 5.2 Full numerical comparison method Compare the testing values or its calculated values which are not subjected to rounding off (or through rounding off, but it shall be marked that it is obtained through rounding-off or non-rounding-off) with the numerical value limit specified in the standard or the relevant documents. As long as it is beyond the scope of the numerical value limit (regardless of size of degree), it is judged to be unsatisfactory. Examples are shown in Table 1. 5.3 Rounding-off value comparison method 5.3.1 Round off the testing values or its calculated values, the rounding-off digits shall be in accordance with the numerical digit of specified numerical value limit. 6.2 Mechanical Property 6.2.1 If the standard or relevant documents do not specify the rounding interval, the tensile test results of metal materials shall be rounded off according to the provisions of Table 2. 6.3 Other mechanical property or physical property tests The testing values or its calculated values that are obtained in other mechanical property or physical property tests may be rounded off according to the provisions of corresponding test method standards. 6.4 Size measurement The results of size measurement shall be rounded off according to the numerical digit identified by the numerical values specified in the standard or relevant documents.7 The coordination and connection requirements of product standards and test method standards for the rounding interval of index or parameter valuesWhen revising and implementing technical standards of metallurgy or related documents, take fully into account the coordination of product standards and test method standards for the rounding interval of index or parameter values. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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