From: Effect of torch process on the steels used for bucket, shovel handle, and other high-tonne mining equipment
Relative position
(see text) (mm)
ASTM 514
(HV)
0.5
285
1
246
1.5
216
2.0
236
2.5
257
3.0
245
3.5
242
4.0
243
4.5
253
5.0
249
5.5
251
6.0
250
7.0
260