About a week ago I ordered a new chisel at work wich I got yesterday. I immediately ground a new bevel on it because the bevel as supplied is always wrong and afterwards I honed it on my work coticule. The new chisel is less hard than my Nooitgedagt chisels, 60 HRC compared to 62 HRC. The drab my Nooitgedagt chisels leave behind on the stone is almost black wich indicates low amounts of slurry. The new softer chisel however leaves behind a light grey drab wich indicates to me more slurry is formed. I've also seen the same thing happen with my kitchen knives. My hard Japanese knives leave behind an almost black drab while my softer Western knives leave behind a lighter drab. Are the shavings of softer steel simply lighter in colour or do they encourage more slurry to be formed? Has anyone experienced the same thing?