BS EN ISO 18265-2013 Metallic materials Conversion of hardness values《金属材料 硬度值的换算》.pdf
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1、BSI Standards PublicationBS EN ISO 18265:2013Metallic materials Conversion of hardness values(ISO 18265:2013)BS EN ISO 18265:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO18265:2013. It supersedes BS EN ISO 18265:2003 which is withdrawn.The UK Committe
2、e is aware that the common need to convertfrom one hardness test scale to another has led to the creation ofvarious International Standards (EN ISO 18265:2013, ASTM E14012b). These standards take measurements from a small numberof example materials using different static hardness tests andpresent a
3、conversion between static hardness scales in the formof comparison tables and graphs of the relevant static hardnesstest results. However, different materials have different hardnessresponses and so the comparison tables in these standards arestrictly only applicable to the same material as that use
4、d to derivethe tables. The UK committee is of the opinion that these standardsshould not be used to provide any conversion from a dynamicindentation test to a different hardness scale, static or dynamic. Therecommended method for determining a hardness scale conversionis to generate a set of compari
5、son results for the exact material andscale conversions required.Using this standard to convert between static hardness scales fortest results obtained on materials different from the examplematerials in the standard will introduce additional and possiblylarge uncertainties (see clause 1). Even for
6、the same or similarmaterials the uncertainty is variable. For this reason, all convertedhardness values obtained by comparison with the specific conversiontables acquired for the example materials quoted in this documentshould be treated as estimated or indicative values only. Attention istherefore
7、also drawn to clause 2 which states that “a measurementmade according to the correct hardness (or tensile) standard for thescale being reported shall always take precedence over a hardness(or strength) value derived from a conversion table”.The UK participation in its preparation was entrusted to Te
8、chnicalCommittee ISE/101/5, Indentation hardness testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The Brit
9、ish Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 69195 9ICS 77.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October
10、 2013.Amendments issued since publicationDate Text affectedBS EN ISO 18265:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO18265:2013. It supersedes BS EN ISO 18265:2003 which is withdrawn.The UK Committee is aware that the common need to convertfrom one
11、 hardness test scale to another has led to the creation ofvarious International Standards (EN ISO 18265:2013, ASTM E14012b). These standards take measurements from a small numberof example materials using different static hardness tests andpresent a conversion between static hardness scales in the f
12、ormof comparison tables and graphs of the relevant static hardnesstest results. However, different materials have different hardnessresponses and so the comparison tables in these standards arestrictly only applicable to the same material as that used to derivethe tables. The UK committee is of the
13、opinion that these standardsshould not be used to provide any conversion from a dynamicindentation test to a different hardness scale, static or dynamic. Therecommended method for determining a hardness scale conversionis to generate a set of comparison results for the exact material andscale conver
14、sions required.Using this standard to convert between static hardness scales fortest results obtained on materials different from the examplematerials in the standard will introduce additional and possiblylarge uncertainties (see clause 1). Even for the same or similarmaterials the uncertainty is va
15、riable. For this reason, all convertedhardness values obtained by comparison with the specific conversiontables acquired for the example materials quoted in this documentshould be treated as estimated or indicative values only. Attention istherefore also drawn to clause 2 which states that “a measur
16、ementmade according to the correct hardness (or tensile) standard for thescale being reported shall always take precedence over a hardness(or strength) value derived from a conversion table”.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/101/5, Indentation hardness t
17、esting.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI S
18、tandardsLimited 2013ISBN 978 0 580 69195 9ICS 77.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2013.Amendments issued since publicationDate Text
19、 affectedBS EN ISO 18265:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO18265:2013. It supersedes BS EN ISO 18265:2003 which is withdrawn.The UK Committee is aware that the common need to convertfrom one hardness test scale to another has led to the cre
20、ation ofvarious International Standards (EN ISO 18265:2013, ASTM E14012b). These standards take measurements from a small numberof example materials using different static hardness tests andpresent a conversion between static hardness scales in the formof comparison tables and graphs of the relevant
21、 static hardnesstest results. However, different materials have different hardnessresponses and so the comparison tables in these standards arestrictly only applicable to the same material as that used to derivethe tables. The UK committee is of the opinion that these standardsshould not be used to
22、provide any conversion from a dynamicindentation test to a different hardness scale, static or dynamic. Therecommended method for determining a hardness scale conversionis to generate a set of comparison results for the exact material andscale conversions required.Using this standard to convert betw
23、een static hardness scales fortest results obtained on materials different from the examplematerials in the standard will introduce additional and possiblylarge uncertainties (see clause 1). Even for the same or similarmaterials the uncertainty is variable. For this reason, all convertedhardness val
24、ues obtained by comparison with the specific conversiontables acquired for the example materials quoted in this documentshould be treated as estimated or indicative values only. Attention istherefore also drawn to clause 2 which states that “a measurementmade according to the correct hardness (or te
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