It’s a modern steel made by Powder metallurgy , its carbon components is evenly distributed , which can improve the swords hardness and toughness , cant these function through the traditional forging ways.  

 

Tamahagane is a steel made by iron sand , the sand was smelted in the clay tub furnace in a old traditional way , the main iron chunk can separate two types of iron , which is high carbon steel and low carbon steel , the high carbon steel is the material of making skin steel , and the low carbon steel can be use to make the core steel , after remove all the Impurities and slag through the forging folding process , cover the core steel with skin steel and make it become a iron stick , and shape it to a sword form. A well heat treat and well shaped and good grind can make a elegant pattern and white hamon. The sword made by Tamahagane provide a great artistry andfunctionality for the collectors , the hardest parts of skin steel makes the edge sharp , and the soft part of core steel provide toughness , gives the swords a great shock resistance.

It’s a steel widespread reputation and full of historic , they call it Damascus Steel or Wootz Steel,it’s a steek made of crucible foundry, forged in low temperature ,pure carbon steel. About the pattern on it , the brightest parts is the hardest Martensite and Cementite , the soft parts is Iron carbide , after etching you can see the Micro-serrated on the edge , its very sharp , though its got a high rate of carbon in it ,but the resilience is very good.

 

Many call it "Damascus" steel, after the city where it is reputed to have originated. Others, particularly in Europe, know it as "pattern welded" steel, which describes it quite well.  It is steel produced by forging together steel laminates of different carbon contents.  The resulting billet is then folded and/or twisted, often in a predetermined way, all the while being forged repeatedly. Because of the different carbon contents, the laminations show up as different colors and patterns are created in the steel.

Different steels perform differently, and by folding and forging them together a combination of their various performance characteristics can be achieved. For example, if one steel has the harness characteristics that we need but not the flexibility, and another has the right flexibility characteristics but doesn't meet our hardness requirements, by folding them together we can arrive at an optimum situation. It suits the requirements of many Chinese swords, with hardness, toughness and flexibility in one blade, very well.  An added bonus, of course, is that some of the patterns we produce in the blades are quite beautiful.

 

Based on the carbon steel , increase the metals flexibility through alloying with Mn or other alloying elements , to pretend it broke instantly under the impact , the swords made by it provide an excellent toughness , often used to the swords practicing .

 

It’s a steel which its carbon is >0.6% and <2% ,the higher the carbon steel has , after a proper heat treat and drawing hardening,the greater hardness , strength and wear resistance you will get , but the limit of the swords flexibility and fatigue(especially the limit of notched fatigue) will get higher also.

 

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