metalmaster1766 Posted May 2, 2008 Share Posted May 2, 2008 ok i did a search, all i can come up with is that the only bandsaw blade that is 15n20 is 4 - 6 inches wide i have some, 1", 1.25", and 1.5" wide blade, about 1-1/2 TPI all i know about it is, is was all from a wood cutting bandsaw i havent had time to do any spark testing, but i think ill grind/cut all the teeth off before trying to forge weld together if it appears to be a bi-metal blade anyone have any idea what type material these blades are? thank you very much Ron Smith heres a picture of the blade Quote Link to comment Share on other sites More sharing options...
LDW Posted May 3, 2008 Share Posted May 3, 2008 I did a search as well, I have several big bandsaw blades but have not tried them. This has a little info on bandsaw blades but is a good article on steels.Steels Useful for Tools Quote Link to comment Share on other sites More sharing options...
Ecart Posted May 4, 2008 Share Posted May 4, 2008 I sharpen the wood cutting bandsaw blades at the mill where I work. The two types that I sharpen are 8" and 11" wide. They are both 15N20. Very good steel for knives and Damascus as I'm sure you know. I would dare say that the narrower blades that you have are probably bimetal. But then again as far as I can see in the pics, the rust is the same on the teeth as it is on the body of the blade. I could certainly be wrong here- and someone who knows better please correct me if I am- but the rust patterns on the body looks the same as on the teeth. So, maybe it is the same metal? My reasoning is that I have an old axe head that is iron with a steel bit. You can see that the bit is rusted differently than the rest of the head. Just my thougts on the subject. Quote Link to comment Share on other sites More sharing options...
Rich Hale Posted May 4, 2008 Share Posted May 4, 2008 Bimetallic blades use a backing that is Only there to give a place to attach teeth made of a better material for the use. It is just a guess as to what that backing may consist of. The blades that Ecart uses woulf be great for knife making and in billets. If you want to forge weld I persoannly would not use the bimetallic blades but would and do use 15N20. I mix it with a simple 10 series steel so I can get a nice contrast in the billet. And as I always say time spent on basice blacksmith skills will pay off a lot if you get into blades later. Quote Link to comment Share on other sites More sharing options...
Dodge Posted May 4, 2008 Share Posted May 4, 2008 That you know what the content is of the wider blades is an asset. To find the content of other blades may be a matter of luck or corporate espionage LOL. Exact content of most commercial cutting tools it often a heavily guarded secret. Quote Link to comment Share on other sites More sharing options...
brucegodlesky Posted May 4, 2008 Share Posted May 4, 2008 Quench it and see if it hardens. If so, use it. I been using similar stuff and haven't had any problems. Actually , I use those blade patterns plus a metal cutting blade (1 1/4") All were quench tested so I use them.Here's an example.It has those 3 sb steels plus 15n20 and some spring steel.. Quote Link to comment Share on other sites More sharing options...
MRobb Posted May 13, 2008 Share Posted May 13, 2008 LDW, thanks for the great article. What a great resource! I printed it out & will read it tonight. Thanks again. Quote Link to comment Share on other sites More sharing options...
Tom Lumpkins Posted May 14, 2008 Share Posted May 14, 2008 I did a search as well, I have several big bandsaw blades but have not tried them. This has a little info on bandsaw blades but is a good article on steels.Steels Useful for Tools I would also like to thank you for this great link. Quote Link to comment Share on other sites More sharing options...
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