If the harder case gives part of the frame, the skin, a higher yield point, even if it is by virtue of a greater stretch before the yield, could that not be interpreted in layman's terms as "stronger", Don? Aside from the abrasion and wear resistance the hard skin affords, an increased resistance to yielding can easily be seen as strength, to non-engineers.

I think this is another case where an engineer and a layman has a simple disagreement over the definition of a term, in this case............... "strength". I have to sit with Miller on this one, on the layman's pew, though I bow to both of your superior understanding of steels.

Ruminating, over a cup of joe. wink

SRH

May God bless America and those who defend her.