4. Hardness test procedure
No. 99MBG127A
4-11
20. Press the diagonal length of indentation input switch once.
21. The fracture toughness value display is fixed, and the fracture toughness value is
determined.
Important
1. OK/±NG is displayed as reliability.
2. The difference between 2 orthogonal crack lengths shall be 10 % or less of the
average length of the cracks.
3. The crack length shall be equal to or more than 2.5 times of the diagonal line length
of the indentation.
4. "OK" will be displayed when the conditions 2 and 3 described above are met.
4.1.5 Completion of hardness test
CAUTION
• The procedure below can be performed only when the data save setting is set to ON.
1. Press
at the upper right corner of the measurement screen.
2. The message below is displayed.
(Pressing returns to the measurement screen.)
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