salimoneus wrote: ↑
Thu Jan 27, 2022 9:37 pm
metaphoricalsimile wrote: ↑
Wed Jan 26, 2022 5:28 pm
salimoneus wrote: ↑
Wed Jan 26, 2022 5:00 pm
Interesting that M390 seems to have made a very good showing in comparison, unless I'm reading the charts wrong. Didn't Dr. Thomas say that he wasn't especially fond of M390? I'm pretty sure I heard him say that in an interview recently. I wonder why, since it seems to be such a good performer in this and many other tests I've seen. Sure I understand it's an older steel, and mostly yesterday's news, but it still performs very competitively.
Larrin Thomas prefers steels that have a good ratio of wear resistance to toughness, and in his testing M390 has not had good toughness relative to its wear resistance.
Sure, with the M390 family being one of the more popular and coveted stainless steels in recent years, they typically give up some toughness as a trade-off. But that's not uncommon at all, and in fact it's expected. M390 has shown to be a fair bit tougher than S30V, and many other popular "stainless" steels.
So it just seems odd for Larrin to single out his dislike for M390 specifically, when it in fact performs better in almost all areas than many other standard stainless steel offerings.
I wonder if it's more due to the M390 family being a direct competitor to Magnacut, than anything else. I would expect a newcomer to talk smack about their top competition, that would make sense. It's not necessarily a dig at the quality of the competition, but rather standard marketing strategies to promote your new offering.
M390 is slightly less tough than S30V, according to the tests I've seen, so between this and the lower corrosion resistance (compared to Magnacut), I wouldn't necessarily consider it a direct competitor.
S90V offers more toughness than M390, more edge retention, and is much less likely to chip, which is why some people prefer it over M390. In my experience, S90V is a better steel for draw cuts, due to it's higher vanadium content. S90V feels "toothy" and aggressive, which makes a very noticeable difference in use.
I do still use the M390/204P/20CV family, but only on the rare occasion that I need to do a lot of push cuts, need more corrosion resistance, or want a steel that is less particular with regard to sharpening technique and also sharpens more quickly.
Depending on how a person uses their knives, their preferences might differ, but that doesn't mean their preferences are wrong or unjustifiable.