Blaine Posted February 18, 2018 Share Posted February 18, 2018 I got my grandpa's tools when he passed away and I found a square stock of crucible Rex 49 what I gather from my research is that it's tool steel I was thinking of making either a hot cut chisel or a knife from it has anyone forged this steel before and know any heat treat info like air, oil, water quench and tempering and what temp for how long ECT Title edited to reflect common name of steel Quote Link to comment Share on other sites More sharing options...
Ranchmanben Posted February 18, 2018 Share Posted February 18, 2018 If you’re forging a hot cut, I’d forge it out, let it air cool and call it good. Quote Link to comment Share on other sites More sharing options...
BIGGUNDOCTOR Posted February 18, 2018 Share Posted February 18, 2018 High Speed Steel lathe tool bit, forget forging it. The heat treat procedure alone is enough to make one just use it for what it is. They make great parallels if you do not have a lathe. What size is it? Quote Link to comment Share on other sites More sharing options...
Blaine Posted February 18, 2018 Author Share Posted February 18, 2018 I don't have a lathe it is 12" × 5/8 I might just do what ranchmanben says it's probably the hardest steel in my shop BC of the tungsten Quote Link to comment Share on other sites More sharing options...
BIGGUNDOCTOR Posted February 19, 2018 Share Posted February 19, 2018 That is around $80 of HSS, sell it or trade it off for something better. Here is forging and heat treat info. https://www.crucible.com/eselector/prodbyapp/highspeed/cpm4hch.html It also very brittle and if it is not done right it can become dangerous if it comes apart while you are using it. Quote Link to comment Share on other sites More sharing options...
Blaine Posted February 19, 2018 Author Share Posted February 19, 2018 TY biggundoctor I'd be willing to trade if it was good carbon stock1075-95, 15n20, even but I am new to this and don't know anyone around town so any offers would have to come from you guys Quote Link to comment Share on other sites More sharing options...
BIGGUNDOCTOR Posted February 19, 2018 Share Posted February 19, 2018 Personally I would keep it around just as it is. I have some that I use for spacers, parallels, etc.. For hot cuts, etc you can use old axles, jackhammer bits, etc. some have used mild since it is still harder than yellow hot steel. Anything heat treated will lose the edge hardness after being in contact with forging temp steel. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted February 20, 2018 Share Posted February 20, 2018 well actually some high alloys steels have drawing temps around forging temps for many steels and so they don't loss much in hardness. Of course they are much more expensive and much more picking about forging and heat treating and so not used as much. Quote Link to comment Share on other sites More sharing options...
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