DLC Rockwell Test

[@dwaipayanmallick]

When you add such load you pierce the coating and measure the hardness of the base metal. No wonder the hardness came as 63. DLC have a hardness of around 2200 Hv or higher and only 2-4 mincrons thick. You need a nano indentor to measure DLC hardness, else you will always measure the underlying steel's hardness. Hope this helps.

[@optimuscrime608]

This is awesome. The fact you have a rockwell tester makes this channel one step above the rest already👍🏼

[@mobilcams]

Rockwell testing DLC is only going to reveal the adhesion properties of the film (look up VDI 3198 test).. dwaipayan is correct in the fact that you need to use a nano indenter which can measure the film hardness along with its elasticity.. DLC coating does NOT make the steel harder, it makes the surface slicker, and more RESISTANT to scratching and wear.. You can polish the best DLC coatings off of any steel surface - this includes sanding etc.

[@AMNE17]

Good to see some hands-on testing! Thank you for taking the time to do this video.

[@ranger5281]

Nice test and video! Clear results. Those handheld testers are not cheap, so appreciate what you brought to the party here.

[@waqarghulam3548]

Wrong concept, you are measuring the hardness on the metal of the blade, dlc coating is a few microns thick

[@KnifeCursed]

Love seeing Rockwell testing on knives.

[@alexanderbertallo1995]

As expected... Thanks for sharing and keep up the good work!

[@mrronvent1122]

You are testing the FLEXIBILITY of the DLC coating, not it's scratch resistance (hardness).

[@WESKIX]

He tested the scratch resistance, he took it right off with sandpaper.

[@williamperron760]

Really like tests like this. For science of course! ;)

[@birdlaw1019]

Great idea for a video, keep up the good work!

[@silvia2408]

Good to know, thanks 👍

[@kraftzion]

What I would lik to know is if application of the dlc coating effects hrc. Does application require heat? Is the knife as hard as one without the coating?

[@tristanwegner]

Thanks for doing the test. Diamond Like Coatings have very little Standardization so far. Wikipedia says there are 7 different types, plus traces of other elements which can decrease quality, especially Hydrogen. As long as there is no testing standard, manufacturers will get away with the lowest quality DLC just for marketing.

[@stoneyswolf]

Nascar uses dlc to coat engine parts I don't think spiderco is applying it the same way it's far superior when applyed in a vacuum but can also be applied in atmospheric pressure. My bolt carrier in my ar rifle is has dlc it can't be removed like you just did it's impregnated into the surface of the metal and it's super slick it's actual a lubricant that's why nascar uses it.

[@natecaraway2000]

Also Gen 5 Glocks have a DLC coating on the slide and barrel and the parts still move smooth and easily even when the gun is entirely dry.

[@lancelink88]

Some Native 5's have a really tight backlock spring. I've never seen a video where someone shows how to tweak the spring to make it a more practical (easy) open and close. Also I never lube a Native 5 because the FRN against the blade is very low friction and oil just gums it up. Without lube the more you use it the smoother it gets.

[@stevenlachance8576]

Thanks for testing. About feeling bad...it’s your knife, at least you are not chopping bricks, with maxamet, or s90, or vanax.

[@supersubes]

Probably not the correct way to test this.

[@zoeymonster8202]

Thanks for cranking out interesting videos. The repetitive background music kinda makes me feel like I’m on hold ;-)

[@amuscarello]

Dude what orange pry thing is that?

[@ThePocketPerspective]

I got it at AutoZone. It says Multiwedge.com on it. It’s a trim panel tool.

[@stevenlachance8576]

I use popsicle sticks at least for knife prying, gives an excuse to buy popsicles.

[@barkingspider2007]

Thanks for the video 😎👍

[@ZPositive]

That's a sweet little tester. Where'd you get it?

[@ThePocketPerspective]

Got it on the secondary market. You can get them new. They are a bit pricey. Secondary ones can also be a gamble if they haven’t been calibrated in a while or you have to replace the diamond penetrator. This is an Ames Model 1.

[@ZPositive]

@@ThePocketPerspective great, thanks! It looks like it makes some decent compromises in size and accuracy. I might just pick one up!

[@ThePocketPerspective]

Great compromise for me. I had a bench top tester, but it’s far from portable...

[@seedeebun]

Please come back, Wes!

[@smashlee6181]

63 hrc seems pretty good for 4v

[@puskelm]

I like your videos, but unfortunately this is misleading. With this measurement, you can only verify the hardness of the steel, not its coating. That's why you got the same result. The DLC coating is so thin and flexible that it cannot be measured using this method.

[@BornIn1500]

Honestly, this test didn't mean anything. The super thin layer won't affect how the blade performs. It's like someone questioning whether or not paint changes the structural rigidity of a wall. Strange test

[@lancelink88]

Sorry you blemished your limited edition blade, but it was for a good cause! :)

[@jeremyeagles3237]

The coating is too thin to really effect the hardness I think.