VG-10 vs. ATS-34, Q2 to Cliff Stamp

Ok,let's study such a metallurgy.
Indeed,Wear resistance of VG-10 is not superior to ATS-34,
Becase carbide size is too small and carbide type is halfway status.Too small carbide is useless for wear resistance.Doing too much is not good.The chemical composition located on the straight line which connects D2 and ZDP189 is recommended,If you want powder metallurgical one surely.In this case,A carbide type changes to harder M7C3 completely from M23C6.But more some steel making technique exist yet.
 
The "too small carbide" structure of VG-10 allows it to easily get sharper than ATS-34. One type of abrasion that ATS-34 resists well is sharpening. For a machine tool application where you have tremendous power driving a cutter through an abrasive medium the abrasion resistance (and high temperature hardness) of molybdenum alloys are a great tradeoff. For refined hand-powered applications like knives the finer carbides and sharper edge of VG-10 is the choice I would make. I really don't like sharpening high-molybdenum stainless steel cutlery unless it has vanadium in it to reduce the carbide size. I have to work too hard and only achieve an inferior edge. D2 takes a much better edge for me than ATS-34. VG-10 and BG42 take better edges than D2.
 
Hi, japansteel,

some questions:
1. you said that it makes no sense to add expensive cobalt to the steel - then, how you would explain that Hitachi developed ATS-55 with 0.40% cobalt, and rather low - 0.60% molybdenum. And, ATS-55 was developed especially for cutlery. Was it a failure?

2. many people consider BG-42 as an improved ATS-34, with addition of 1.20% vanadium, and a 'cleaner' production procedure. Also, certain experience tells us that BG-42 is upgraded in comparison with ATS-34. Comments?

Franco
 
Hi Japansteel,


Wouldn’t large carbides be undesirable in knife steels since the larger carbides are more easily dislodged from the fine edge of a sharp knife?




- Frank
 
In case of too small status,also worse properties exists.
It is easy to be sharpen as compared with ATS-34,
however,wear resistance of ATS-34 is superior to VG-10.
You can choose favorit one in both different properties.
However, since VG-10 have taken the expensive metallurgical manufacture method, imitating chemical composition of ATS-34, coming out of a minus side cannot deny them to long-term purchase, either.
i dont understand metallurgical aim of VG-10 clearly.
More good alloy design exists.
 
Hi, Franco.

1.ATS-55 is not best as compared with ATS-34. But also it is better one.
2.BG-42 is not so famous as compared with ATS-34 yet, becase it is not easy to get beautiful surface or sharp edge on that steel.Common metallurgist tend to adopt Vanadium Carbide against wear resistance.However, it is teachings of not a knife steel but High speed steels, and we actually watched many teachings which are not helpful on knife problems by such a way in Japan.
 
I was reading this, as it was new and i myself was new to knife forums. Funny to see it again.
 
why not take the man cliff back to the forum ?

the sad thing gone for few years , cliff commit a personal attack , nosense.

cliff is a kind guy and never insult others .
 
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