regarding punch tests . . . two questions
As background, a few facts:
Hardened tool steel
Brinell hardness = 600-1500HB
Bisplate 80 (rocna specification) Brinell hardness = 255HB
Bisplate 60 (general grade apparently used in tested anchors) = 210HB
A36 (mild steel) Brinell hardness = 150HB
So, my two question(s):
(1) would you not get a dimple even in the specified B80 steel if you hit it with a tool steel punch?
(2) would it be possible by eye to distinguish the dimple in B80 steel (speced) from the dimple in B60 steel (apparently used in tested anchors) given their harndess numbers are only 20% different?