don't tread on me Posted May 25, 2010 Share Posted May 25, 2010 I have this fence post/rebar stuff, and after I quench it I can brake it with one hand. Broken ends are vary dense. Quote Link to comment Share on other sites More sharing options...
Rob Browne Posted May 25, 2010 Share Posted May 25, 2010 Rebar is variable and often made of re-melt/recycled steel. It is made to do a job and so long as it is good enough for that it is acceptable. Its basically a guess what you have metal. Now, as for breaking it in your hand how did you harden it? What heat did you take it to and what did you quench it in. How hot have you had it, if its heated too much you can burn the metal making it weak. Did it ever get to sparking temperature? If you answer some of these questions then some sort of considered answers will come your way. Cheers Quote Link to comment Share on other sites More sharing options...
rustyshackleford Posted May 25, 2010 Share Posted May 25, 2010 Like Rob said, it's trash metal (mystery meat) The stuff I've got doesn't want to give for anything. Took forever to reduce some 1" to tong handles using a 12 lb sledge and 4lb hammer. How big is the stuff you're breaking off (.25" square or...?) Quote Link to comment Share on other sites More sharing options...
don't tread on me Posted May 25, 2010 Author Share Posted May 25, 2010 Rebar is variable and often made of re-melt/recycled steel. It is made to do a job and so long as it is good enough for that it is acceptable. Its basically a guess what you have metal. Now, as for breaking it in your hand how did you harden it? What heat did you take it to and what did you quench it in. How hot have you had it, if its heated too much you can burn the metal making it weak. Did it ever get to sparking temperature? If you answer some of these questions then some sort of considered answers will come your way. Cheers It does not seem to mater how hot it is when I quench it, I have quenched it at black heat and at bright red it makes no difference atall. No I have never berned the metal. Quote Link to comment Share on other sites More sharing options...
jimbob Posted May 25, 2010 Share Posted May 25, 2010 maybe this link will help http://www.crsi.org/rebar/id.cfm or this one http://www.sizes.com/materls/rebar.htm a google search will turn up all sorts of information about rebar Quote Link to comment Share on other sites More sharing options...
MattBower Posted May 25, 2010 Share Posted May 25, 2010 It does not seem to mater how hot it is when I quench it, I have quenched it at black heat and at bright red it makes no difference atall. No I have never berned the metal. You can't harden from much below 1500 degrees, which to my eyes is a nice orange. So I'm starting to think there's something else going on here. Quote Link to comment Share on other sites More sharing options...
Pat Roy Posted May 30, 2010 Share Posted May 30, 2010 My experience with rebar leads me to believe its performance is unreliable. I wouldn't quench it at all and still worry that it is brittle. Quote Link to comment Share on other sites More sharing options...
don't tread on me Posted May 30, 2010 Author Share Posted May 30, 2010 My experience with rebar leads me to believe its performance is unreliable. I wouldn't quench it at all and still worry that it is brittle. Yes that has happened to me to. Quote Link to comment Share on other sites More sharing options...
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