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BS EN ISO 18265:2013

Current

Current

The latest, up-to-date edition.

Metallic materials. Conversion of hardness values

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-10-2013

Foreword
Introduction
1 Scope
2 Principles of conversion
3 Application of conversion tables
Annex A (informative) - Conversion table for
        unalloyed, low alloy steels and cast steel
Annex B (informative) - Conversion tables for
        steels for quenching and tempering
Annex C (informative) - Conversion tables for
        steels for cold working
Annex D (informative) - Conversion tables for
        high speed steels
Annex E (informative) - Conversion tables for
        hardmetals
Annex F (informative) - Conversion tables for
        non-ferrous metals and alloys
Annex G (informative) - Conversion tables for
        tool steels
Annex H (informative) - Remarks on the effect
        of the changed test conditions
Bibliography

Describes the principles of the conversion of hardness values to equivalent values in other hardness scales and to estimates of tensile strength.

Committee
ISE/101/5
DevelopmentNote
Supersedes BS 860(1967) and 02/708329 DC. (11/2003) Supersedes 11/30210148 DC. (11/2013)
DocumentType
Standard
Pages
96
PublisherName
British Standards Institution
Status
Current
Supersedes

This International Standard specifies the principles of the conversion of hardness values to equivalent values in other hardness scales and to estimates of tensile strength. It gives general information on the use of the conversion tables.

The conversion tables in Annexes A to G apply to

  • unalloyed and low alloy steels and cast steel,

  • steels for quenching and tempering,

  • steels for cold working,

  • high speed steels,

  • tool steels,

  • hardmetals, and

  • non-ferrous metals and alloys.

NOTE 1 The conversion tables in Annexes B to G are based on empirical results which were evaluated by means of regression analysis. Such analysis was not possible in the case of the values given in Annex A because a sufficient number of results was not available.

NOTE 2 Annex H gives information about the effects of changes of the test procedure in the standards specifying the hardness tests.

Converted values obtained using this International Standard are only directly applicable to the exact material tested. For all other materials, they provide an indicator only. In all cases, the converted values are not intended as replacements for values obtained by the correct standard method. In particular, tensile strength estimates are the least reliable converted values in this International Standard.

Sections of this International Standard are reprinted, with permission of ASTM International, from ASTME140 Standard Hardness Conversion Tables for Metals Relationship among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Harness, Knoop Hardness, and Scleroscope Hardness.

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DEFSTAN 02-381/1(2009) : 2009 REQUIREMENTS FOR THE FORGING AND HEAT TREATMENT OF MAIN PROPULSION GEARS
DEFSTAN 02-880/1(2012) : 2012 REQUIREMENTS FOR HY100 (UNITED KINGDOM) STEEL PLATES
BS 350:2004 Conversion factors for units
BS 1685:2008 Bevel protractors (mechanical and optical). Requirements and test methods
BS 4311-2:2009 Gauge blocks manufactured to imperial specification Accessories
09/30199783 DC : 0 BS 4S 500 - PROCEDURE FOR INSPECTION, TESTING AND ACCEPTANCE OF STEEL SHEET AND STRIP
09/30193117 DC : 0 BS 4311-2 - GAUGE BLOCKS MANUFACTURED TO IMPERIAL SPECIFICATION - PART 2: ACCESSORIES
08/30177880 DC : DRAFT JUNE 2008 BS 1685 - BEVEL PROTRACTORS (MECHANICAL AND OPTICAL) - REQUIREMENTS AND TEST METHODS

ISO 6507-1:2005 Metallic materials Vickers hardness test Part 1: Test method
ISO 6506-1:2014 Metallic materials Brinell hardness test Part 1: Test method
ISO 6508-1:2016 Metallic materials — Rockwell hardness test — Part 1: Test method
ISO 6507-2:2005 Metallic materials Vickers hardness test Part 2: Verification and calibration of testing machines
ISO 6892-1:2016 Metallic materials Tensile testing Part 1: Method of test at room temperature
ISO 4957:1999 Tool steels
ISO 9513:2012 Metallic materials — Calibration of extensometer systems used in uniaxial testing
ISO 6508-2:2015 Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing machines and indenters
ISO 4964:1984 Steel Hardness conversions
EN 10083-1:2006 Steels for quenching and tempering - Part 1: General technical delivery conditions
ISO 7500-1:2015 Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring system
ISO/TR 10108:1989 Steel Conversion of hardness values to tensile strength values
DIN 17200:1987-03 STEELS FOR QUENCHING AND TEMPERING - TECHNICAL DELIVERY CONDITIONS

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