ATS-34 steel not as good

I bought a Spyderco centofante in the very early 90's.

If you count Chris Reeve Knives they where using it in the early 90's for sebenzas too.
 
Hi,Joe.Your consideration is excellent.
But melting process is not only steel making process.
But i cant reply what is it,how to do.sorry.

japansteel
 
Thought I'd throw in a different consideration. My understanding of the 154CM/ATS-34 issue was one of cost effectiveness, batch consistency and availability - in efficient sizes, shipment quantities not oo big etc.

I'd like to think a little differently about the batch consistency issue - I think people agree on the consistency of the product being a factor, given that 154CM and ATS-34 are the same chemically, or at least supposed to be. Those chemical contents could vary by any degree. In the end, it is the factory that determines what is an "acceptable" tolerance range for the percentages of C, Moly Chrome etc.

I've personally used ATS-34 and now the newer RWL-34, because I was told that it would have finer grain and would be more consistent as it was a particulate metallurgy steel. Frankly I can't tell the difference.

Here's the catch. I think it would make a big difference if I were involved in large batch knifemaking. I make 1 knife at a time and would probably only make 12-18 stainless knives a year. A larger company might churn out 1200 or 1800 knives or probably more. If there is a change in the absolute quality of the steel, I think the large company would be hurt more financially and batch consistency becomes a bigger issue. More knives would be affected.

There are so many different factors in turning a hunk of steel and components into a working knife and the original steel is only one factor. There's the grind profile, edge quality, overall design and of course, HEAT TREATMENT. A bad batch of ATS-34 with good HT will likely outperform a badly HT-ed piece of "good" ATS-34.

My 2 cents worth. Cheers.
 
Hi,Jason Cutter.
Traditionally, since Japanese people are sensitive to the condition of an edged tool, we are adopting the way of making which is scrupulous in detail.
But if you feel same properties of both materials,it is one of truth.

japansteel
 
I have spoken first hand with a Crucible metallurgist on the 154CM past "cleanliness" issues I've heard of so often. He told me he was never aware of this ever happening. He assured me also today's smelts are within Crucible quality standards.
 
It will not advertize using samurai-sword, if they have confidence in quality. We and hitachi have supplied the law material of samurai-sword all over Japan from ancient times. Supposing there is an opportunity, it will refer to a search engine by "company name and samurai sword", and if the hit number of cases is compared, the meaning which I have said is understood.

japansteel
 
And also AUS-8 have some by which the advertisement that hitachi made is made.but,in fact, it is not ture. AUS-8 which I know are 8%Cr-steel made by aichi-steel in Japan. It seems that this material is in fashion in the U.S. ,because U.S. import duties are carrying out for stainless steel.If you have a metal microscope, you can understand that an edge tends to lack by large carbide of AUS-8.

japansteel
 
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