JSA - JIS Z 2245
Rockwell hardness test — Test method
| Organization: | JSA |
| Publication Date: | 20 April 2021 |
| Status: | active |
| Page Count: | 45 |
| ICS Code (Mechanical testing of metals): | 77.040.10 |
scope:
This Standard specifies the method for Rockwell regular hardness and Rockwell superficial hardness tests for metallic materials, and is applicable to stationary and portable hardness testing machines. The scales and the scope of hardness are shown in Table 1 and Table 2.
For specific materials and products such as hardmetals, other standards shall apply (for instance, ISO 3738-1 and ISO 4498).
NOTE 1 Attention is drawn to the fact that, in ISO 6508-1, the use of tungsten carbide composite for ball indenters (hereafter referred to as hardmetal indenter balls) is considered to be the standard type of ball indenters for Rockwell regular hardness and Rockwell superficial hardness, and steel ball indenters are allowed to be used only in the test complying with Annex A. This Standard will adopt hardmetal indenter balls as the standard indenter at the time of next revision (see Table 1, Table 2, 5.2, 6.3 and Table E.1). Even in this case, steel balls are planned to be used as the standard indenter in the test complying with Annex A.
NOTE 2 Attention is drawn to the fact that the result obtained with hardmetal indenter balls may be significantly different from the result obtained with steel balls.
NOTE 3 (Editor's note : this NOTE 3 is unrelated to English translation therefore omitted.)
NOTE 4 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.
ISO 6508-1 : 2016 Metallic materials - Rockwell hardness test - Part 1 : Test method (MOD)
In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.
WARNING Persons carrying out tests based on this Standard should be familiar with normal laboratory practice. This Standard does not purport to address all of the safety problems, if any, associated with its use.
It is the responsibility of the user of this Standard to establish appropriate safety and health practices.
Document History
