Tyler Reinarts Posted January 27, 2019 Share Posted January 27, 2019 I was doing some research on the composition of historical blade materials and I found out that a lot of the iron they used contained a lot of phosphorus, between .4 and 1.4%. It also seems like they used it on purpose for pattern welding. Here's the links to some articles: https://www.tf.uni-kiel.de/matwis/amat/iss/kap_b/backbone/rb_3_4.html https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.uni-obuda.hu/journal/Thiele_Hosek_60.pdf&ved=2ahUKEwj3s6rbo43gAhUL54MKHVZ7AEUQFjARegQIBBAB&usg=AOvVaw1XYSF1k9B22QPbps6nWetn So my question is: wouldn't that much phosphorus make the metal extremely brittle? I've read that phosphorus increases hardness but reduces toughness/ductility but I don't know to what extent. I guess what I'm asking is how a high phosphorus (e.g. 1% )steel or iron would compare to other materials and if it's still strong enough to be useful to a blacksmith. Link to comment Share on other sites More sharing options...
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