blaes

i got this blade from a freind that worked at a shop that replaced and sharpend the carbid teeth i was going to make aknife out of this but i can only cut it with oxy/cet i used the torch to cut into small pieces and then cut on my chop saw but my saw wont cut it please help
 
I can only tell you what I have read here:

Saw blades can be many different steels. It is poor reverse engineering to say, for instance, "saw blades are L6" because you read backwards on a chart that actually says one possible use for L6 is saw blades. (credit:Kevin C.)

It gets more complicated when the saws are carbide toothed, because there is no need for the manufacturers to use "good" steel. It could be great steel, or a poor choice for blades. If it happens to be an air hardening steel, then you would have hardened it using the torch and the chop saw won't be happy. Some specialty saws like concrete cutters can have some "interesting" backing steels behind carbide teeth. You may have to anneal your steel hunks before you can shape it effectively with the tools you have available.

Your only real options are limited unless you send it for an expensive identification analysis. You can spark test it and get an idea if it's high alloy or plain steel or crap.Test a piece through a HT cycle and see how it hardens and tempers. If that's good, then make a quickie test blade and whack and cut stuff. If you can figure out how to make a knife that tests out well, then what it is doesn't matter. A good knife is a good knife, and you have a big hunk of the steel. I'm not personally big on mystery steel, but there are many that won't use anything but found steel. Whether it's worth the effort can only be decided by you.

There's a guy Matt Doyle (username: mdoyle)here on Shoptalk who has "goverment job" access to steel analysis through a friend at his work. He has run samples for people here before free of charge. You might try and get in touch with him and see if he could run a sample for you. Report the analysis and people who have data books (mete) may be able to point you in the right direction.

Hopefully someone will come by and offer better advice than this couldawouldashoulda but that is what limited help I can offer. :)
 
thanks fitzo i was going to use this to make a small knife for useing in the shop butt i think i will just scrap it and use known steel
 
Jeremy, Those big blades make great accents when hung on the wall of the shop. I had a batch of big concrete blades given to me. I never made any knives from them, but they sure look impressive to all those people who have heard that "saw blades" make good knives.There are also a couple of old two man saws on the outside wall. We have to keep the myth alive!
Stacy
 
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