D7 tool steel

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revhard05

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Dec 12, 2008
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I was prowling around on my local supplier which i recommend. "Southern Tool Steel" their located in Chattanooga,Tn which is a central location to much of the United states www.southerntoolsteel.com. However they have "D7 tool steel" I haven't been doing this long compared to some of you, and i haven't heard of anyone using it. why would that be? any insight would be appreciated.


here are some specs http://www.diehlsteel.com/d7.aspx
 
That's a very high carbon content even if much of it is tied up as carbides .I would expect it to be a bit brittle because of it .The Mo and especially the V will form very wear resistant carbides. I can't think of anyone who is using it .
 
right, it has a very high hardening temperature aswell. i wonder how hard it will get? it looks like 67 -8 rc.
 
D7 is used primarily for brickmolding liners. There's a lot of bricks made down south and that is why Southern stocks it. It is one of the most difficult steels to machine and grind. The high vanadium content creates large vanadium carbides (its not PM). The steel is very brittle due to this coarse structure. Works very well just for brick slurry sliding across it. You can make a blade from it but you'll burn up tons of belts and have a pretty brittle edge when you are done.
 
revhard05 said:
right, thanks Satrang. im glad u truned me away..lol i think im going for a2 or o6
Click to expand...

i would use O1 not O6. i have heard that its not as good as 01 because it has what i think was graphit added to it to help it machine better.
 
O-6 is a graphitic tool steel where the graphite particles are for free machining.While knives have been made of it the graphite makes it more brittle .
 
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