M00000347
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ISO 18265 2nd Edition, October 1, 2013 Metallic materials - Conversion of hardness values
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Description / Abstract:
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 ASTM E140 Standard
Hardness Conversion Tables for Metals Relationship among Brinell
Hardness, Vickers Hardness, Rockwell Hardness, Superficial Harness,
Knoop Hardness, and Scleroscope Hardness.