I would bet that a set of 12x12 x 1/2" aluminum plates would get a blade down under 1100 in less than 2 minutes. I did my D2 that way (I also had a small fan blowing on the plates). You could pick them up bare handed in a very short time. The plates really suck the heat out. I confess that I did some 19c27 previously and I used oil to quench, I dunked them in transmission fluid right from the oven, still in the stainless steel foil envelopes. They came out fine and hold a great edge. It has the same instructions as 13c26 at Sandvic (19c27 does call for 20f higher temp prior to quench) but the rest is identical.