Tim,
I'll divide my answer into four parts.
1st. All of us, frequentors of this site, are old friends, aren't we? So, please don't call me "Sir", my name is Giovanni.
2nd. I'm most happy for your good opinion on the article.
3rd. We're considering to repeat the research for stainless steel.
4th. Your posting is dated January 29 and the article is to be published on the February issue of Welding Journal. How it comes that you have already read it?
Giovanni S. Crisi