In the October 1997 issue of BLADE Magazine, Ed Fowler reported on a 52100 blade tested by Metallographic Laboratory Services in California. The owner of the lab stated that the sample had the finest grain structure in the cutting edge of any steel he had ever examined, with carbide size between 1/2 and 1 micron. As Mr. Fowler said, "This is as fine as it gets," comparing it to D2 at 10-15 microns and CPM420V at 2-4 microns.
I contacted Mr. Fowler early last year about that test blade, and he told me the blade had been forged and heat treated by Rick Dunkerley. That same knife was later put through a flex test in which it was clamped in a vise, bent 90 degrees, then bent back 180 degrees, back again 180 degrees, back again 180 degrees, back again 180 degrees, back again 180 degrees and finally cracked at the edge on the next flex. In cutting tests a Dunkerley 52100 blade has made over 1000 cuts through rope without re-sharpening. With a few strokes on a fine Arkansas, that edge was restored to full sharpness. Both the flex test and cutting test were witnessed by other knife makers with national reputations, who corroborate the veracity of these results.
52100 is Rick's basic "using knife" steel, and he uses and tests his own hunting knives as a professional outfitter and elk hunting guide in Montana. He also does some of the most elaborate mosaic damascus to be found, having won national awards in many categories, and has even forged CPM steels--both from powder and from bar stock.
Rick's mosaic damascus folders range up into the $5000 category, but he'll still make you a truly beautiful hunting knife in his forged 52100 for about $600, including a handsome, heavy leather sheath he makes himself. I think that's a remarkable deal.
--Will
[This message has been edited by WILL YORK (edited 10-31-2000).]