Question to Kershaw - What is SG2?

Well, I think we will have good old steel pumped by Friction Forging or similar technology. It may seen high tech now, but it is simple and clean procedure (easy to automate) turning cheap old D2 steel into superperforming blade and in time I think everybody will have this machine or will be able to send blade to someone who offers such service. I think Kershaw need to pay close attention to this.

It may very well be the end for all this Powder Metallurgy expensive super steels, it may be cheper to use D2 + Friction Forging then do all this PM stuff. Also It does not require HT after this.

Thanks, Vassili.
 
Vassili, any idea why they chose D2 for Friction forging? Any idea if other types of steel were tried? Thanks, Joe
 
thanks for posting this thread Vasilli....it's been very edgeucational.... :thumbup:
i'm still anxiously awaiting the SG2 JYD2 that i ordered.... ;)
 
The Mastiff said:
Vassili, any idea why they chose D2 for Friction forging? Any idea if other types of steel were tried? Thanks, Joe
Click to expand...

Well, they sad that it is best suited and they try other steel and D2 seems better... Knives of Alaska make a lot of knives out of D2 so they have good stock I guess already and it is relatively cheap, so it may be more natural to them to use it.

From other hand D2 has a lot of Carbon and with such high content it tends to create strange and misterious carbide structures inside steel like in bulat they are visible:

knife73-04.jpg


Again in Russia some smith claim that by repeatetive thermocycling as in Wirtz article

http://playground.sun.com/~vasya/Bulat-Achim.html#English

turn D2 into bulat/wootz just because first three step done in the plant. But I do not know for sure - I guess nobody really know how exactly Friction Forging affects steel.

Thanks, Vassili.
 
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