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試験装置 Daekyung DTR-300NのPDF 操作マニュアルをオンラインで閲覧またはダウンロードできます。Daekyung DTR-300N 15 ページ。 Rockwell hardness tester
ページを印刷する9.3 Reference Table 3.
Calibration value when a cylinder-shaped specimen is tested as B, F, G scales
1/4"
Measured
Hardness
(6.4mm)
Calibration value (Actual hardness = Measured hardness + Calibration value)
0
12.5
10
12.0
20
11.0
30
10.0
40
9.0
50
8.0
60
7.0
70
6.0
80
5.0
90
4.0
100
3.5
Cylinder Diameter
3/8"
1/2"
(10mm)
(13mm)
8.5
6.5
8.0
6.0
7.5
5.5
6.5
5.0
6.0
4.5
5.5
4.0
5.0
3.5
4.0
3.0
3.5
2.5
3.0
2.0
2.5
1.5
DAEKYUNG TECH & TESTERS Mfg. CO.,LTD
5/8"
3/4"
(16mm)
(19mm)
5.5
4.5
5.0
4.0
4.5
4.0
4.5
3.5
4.0
3.0
3.5
3.0
3.0
2.5
2.5
2.0
2.0
1.5
1.5
1.5
1.5
1.0
7/8"
1 "
(22mm)
(25mm)
3.5
3.0
3.5
3.0
3.5
3.0
3.0
2.5
2.5
2.5
2.5
2.0
2.0
2.0
2.0
1.5
1.5
1.5
1.5
1.0
1.0
0.5
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