From: Effect of torch process on the steels used for bucket, shovel handle, and other high-tonne mining equipment
Relative position
(See text) (mm)
SAE 5130
(HV)
0.5
462
1
446
1.5
309
2
289
2.5
272
3.0
302
3.5
301
4.0
328
4.5
353
5.0
358
5.5
371
6.0
411
6.5
429
7.0
434
7.5
441
8.0
457
8.5
467
9.0
478
10
10.5