Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness

Importancia y uso:

6.1 The conversion values given in the tables, or calculated by the equations given in the appendixes, should only be considered valid for the specific materials indicated. This is because conversions can be affected by several factors, including the material alloy, grain structure, heat treatment, etc.

6.2 Since the various types of hardness tests do not all measure the same combination of material properties, conversion from one hardness scale to another is only an approximate process. Because of the wide range of variation among different materials, it is not possible to state confidence limits for the errors in using a conversion chart. Even in the case of a table established for a single material, such as the table for cartridge brass, some error is involved depending on composition and methods of processing.

6.3 Because of their approximate nature, conversion tables must be regarded as only an estimate of comparative values. It is recommended that hardness conversions be applied primarily to values such as specification limits, which are established by agreement or mandate, and that the conversion of test data be avoided whenever possible (see Note 1).

Subcomité:

E28.06

Referida por:

B0127-19, F1058-16, B0599-20, F0688-19, F0961-20, A0240_A0240M-24, F1026-86R22, B0162-99R19, G0081-97AR18, B0719-20, F2162-01R16, F1079-87R22, B0164-03R19, F1325-91R23, A1038-19, E1004-23, E0110-14R23, A1120_A1120M-21, F1613-95R23, B0166-24, A1038-19, B0865-20, B0906-22, B0718-22, A0370-24, A0047_A0047M-99R22E01, B0333-03R18, E1268-19, A0480_A0480M-24, A0805_A0805M-09R21, B0688-22, B0409-22, B0575-17R23, F2511-05R22, B0733-22, B0546-19R24, E0010-23, B0637-23, B0407-22, E0110-14R23, E0018-24, E1268-19, A0726-18, A0677-16R23, A0240_A0240M-24, B0168-19E01, B0160-24, A0220_A0220M-99R22E01, B0163-22, A1038-19, E0018-24, A0956_A0956M-22, F3607-22, B0929-23, A0370-24, E0092-23, E1711-20, E0384-22, E0010-23, F2332-06R22, E0018-24, G0073-10R21, E3246-22

Volúmen:

03.01

Número ICS:

77.040.10 (Mechanical testing of metals)

Palabras clave:

conversion; hardness scale; metallic ;