Why isn't the RCH (Rockwell) hardness not listed? That would answer almost all of the hardness questions...
1192174
Don't know why it's not listed but, this may help: S30V Rockwell Hardness: 59-61
1192175
From the Buck Knives site "it can be hardened to a Rockwell hardness of Rc 59.5-61."Second hardest steel I know of for knives.
2243775
They company states the blade is made from "the finest American stainless steel". They do not say what hardness it is.
634906
Ontario has a spotty record on heat treat. Had the same problem with an RD9. The blades I've had that Justin Gingrich did the treat on have never failed or had issues. OKT may be US made but their QC is abysmal. The steel is good but the RC number is meaningless without a good heat treat. The protocols they use can be vastly different and lead to the same Rockwell hardness number and one blade is amazing while the other will chip, bend, or snap.
764319
I don't know why. I asked nearly the same question (what is the difference between the T100 &T120;) in the Q & A section.
663220
These are hand forged, that naturally produces higher hardness raitings. I've used mine on frozen maple, and it kept its edge; had to sharpen it after every third day of hard use. On warm pine, this axe is so hard you probably won't have to sharpen it very often. From what I've read on some of the "swedish axe maker" websites (wetterlings, hults) these axes have a rockwell of 58-59. Despite high hardness, I find my axe easy to sharpen with a stone. Great axe.
1199078
There are a few advanced men who have used it and I am sure a phone call to Iron Mind in California can get you more specifics. I believe they have a tool free number. I have done the 1.5 and believe I could achieve the 2 if I owned it.
1055690
Too bad Amazon decided to delete RC Sherrer's post. Based on R Carr's reply, it must have contained some useful info that answered the question, and would have probably helped others.
551499
I emailed Winco and all they said was "The grain is a Fine/Medium grain" so I guess we're on our own. I'm looking to get it for major blade repair as well as leveling my higher grit stones (1000-6000 grit). Good luck.
319363
I don't know but there was a list on the sight with hard ware comparability. I'm sorry I wish I was more help.
361308
The Rockwell rating on 1070 tool steel typically ranges from 52-58 depending upon the heat treatment. 1070 is a tough steel known for durability and resistance to chipping or breaking during cutting and light prying tasks. The 10 series is often popular for sword steels due to the qualities already mentioned along with relative flexibility. This particular knife is from thick bar stock, so flex is not the benefit, but for a tough, durable, inexpensive one-piece knife you couldn't ask for anything better. In direct testing against the retired Chris Reeve line of one-piece A2 tool steel knives, 1070 actually held up better in destruction testing according to one article I read. The Rockwell rating on 1070 tool steel typically ranges from 52-58 depending upon the heat treatment. 1070 is a tough steel known for durability and resistance to chipping or breaking during cutting and light prying tasks. The 10 series is often popular for sword steels due to the qualities already mentioned along with relative flexibility. This particular knife is from thick bar stock, so flex is not the benefit, but for a tough, durable, inexpensive one-piece knife you couldn't ask for anything better. In direct testing against the retired Chris Reeve line of one-piece A2 tool steel... » Read More The Rockwell rating on 1070 tool steel typically ranges from 52-58 depending upon the heat treatment. 1070 is a tough steel known for durability and resistance to chipping or breaking during cutting and light prying tasks. The 10 series is often popular for sword steels due to the qualities already mentioned along with relative flexibility. This particular knife is from thick bar stock, so flex is not the benefit, but for a tough, durable, inexpensive one-piece knife you couldn't ask for anything better. In direct testing against the retired Chris Reeve line of one-piece A2 tool steel knives, 1070 actually held up better in destruction testing according to one article I read. « Show Less
1145117
I honestly dont know what the hardness of the blade is, due to the fact that the blades are not of a high quality these details are often not given with the product. However if you want a rough estimate on how hard the blade material is from my experience with them they loose their edge quickly while cutting boxes and its not very easy to get a sharp edge on them like on my ANSA knife. I would say that its the same as the hardness on regular 440 stainless steel nothing special here.
844482
I'm glad I received your question pertaining to both the dremel and the Rockwell. I was always dissapointed with the performance of the Dremel and the poor quality of the accessories. It lacked the power I needed and overheated to the extreme that I couldn't touch it after 10 minutes of using it. Then I bought my Rockwell. After numerous projects, it's still going strong.
128381
They are hard like the 48.It is a very good calculator, I am an engineer and was able to program all my general beam equations into the spreadsheets app. The spreadsheets do not run in RPN although the math part of the calculator can-you can switch back and forth but I am trying to use standard math on it. Long numbers do not have commas separating thousands, which is too bad.
374668
It appears that the "D" is an error that shows up on AHP's website as well as on Amazon. As of March '14, all the older versions have been sold out, AHP has only the latest models of 200X TIG welder available.
893
Microscopic is the only information I have. You could contact Luna for specification on that.
1146566
Why not ask the manufacturer for specific information about the materials in this product?
1465819
Granite has a hardness of 6-7 and the carbide steel point has a hardness of of 8.5 so the point should win out. It depends on how detailed a design you are trying to do since the tip will round some in use. There is the heavy duty #9929 point as an alternative.