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I’ve had this question a lot, and the answer is no. The DLC(and similar coatings) are all merely a few microns thick typically. The diamond indentor has actually pushed through this coating before the 150KG load is even applied. I have independently verified this several times via ASTM E384 Microhardness testing. A difference of less than 0.1 HRC was found across multiple samples. Good question though!
Same for the type of blade steel.I won’t disagree with this at all. Most of the knife community is using knives to open up boxes that have even more knives! But I do think it is useful information for people who do care. Why should I buy x brand, when y brand does a much better heat treat? People use their knives for different things. What matters to you probably doesn’t reflect the knife community as a whole.I get a chuckle about hrc discussion when people discount a long standing and reputable brand or knife as inferior quality when they find out the rockwell hardness number isn't up to what they think it should be. A perfect example of that is a comment I saw on one of those posts from someone who said they had the knife in question, used it alot and really liked it but now were upset about it because it didn't have a high hrc number.
I think hardness numbers are about as useful as the color of the knife to 99% of knife collectors
Very few people who are in this hobby would be able to tell a difference between blade steels or blade hardness, myself included. You don't need the newest super duper steel with whatever is deemed to be the perfect hrc to cut open amazon boxes.
I’ll actually comment on this one. Hinderer’s actually seem to be a bit harder on the newer production models. Looks like the drama between Hinderer and TK caused them to raise the average hardness. The 2 Firetac’s towards the bottom were older production, and the top 2 were from a drop a month or so ago. Kind of interesting!
Agree.
Gotcha, welcome in! Lemme know if you have questions I can answer.
Very fair point! It could just be a rocky intro is all. Again, I’m open to changing my views at any given point. I have been entirely open minded when it comes to being wrong on things. I actually initially commented that the DLC coating does have an effect on Rockwell hardness readings on one of my first hardness related posts. A commentor who also had experience with Rockwell hardness testing pointed out the thickness of the coating. I was entirely wrong initially, so I went and tested it multiple times with multiple samples. But anyway, yah I’ll stick around for now.You're just on the outside looking in. Once you get over the unfamiliar you'll see that both the mods and people around this place are incredibly reasonable folks.
Welcome
I appreciate it! It’s been a long time in the making, and a lot of work so far. Feel free to reach out to me if you have any questions related to any of the testing. It’s fairly straightforward, but a lot of people still come up with good questions that I haven’t covered yet. Thanks!
Yeah, I jumped the gun on that & admitted I was wrong. I sometimes type faster than I think. I love Rick's stuff. OTOH isn't 20CV basically S90V? You would think it would/should be harder than 59.3 JS.
No, 20CV is almost exactly M390, not S90V. Yes, 59.3 for that steel isn't great. Not surprised it's from a 2018 knife.Yeah, I jumped the gun on that & admitted I was wrong. I sometimes type faster than I think. I love Rick's stuff. OTOH isn't 20CV basically S90V? You would think it would/should be harder than 59.3 JS.
Yeah, I jumped the gun on that & admitted I was wrong. I sometimes type faster than I think. I love Rick's stuff. OTOH isn't 20CV basically S90V? You would think it would/should be harder than 59.3 JS.
