High-performance LD Steel Tameshigiri Katana

800.00$

If you choose handmade saya, the production time at least will be 2 months longer.

Z-tuff Powder Steel Katana

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<Koshirae>
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■Tsuba:Iron
■F&K:Brass
■Menuki:Brass
■Seppa:Red Copper
■Habaki:Red Copper
■Tsuka:Hand Made Tsuka(Haichi Style)
■Tsuka Samegawa:White Ray Skin With Emperor Nodes
■Tsuka Ito:Kapok Imported From Japan・Creamy-White(High Quality Hishigami)
■Mukugi:1
■Kashira&Kurikata Shitodome:Black
■Saya:Hron Koiguchi、Kurikata、Kojiri
■Saya Style:Wine
■Sageo:Fake Silk Sageo
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<Blade>
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■Nagasa:71CM
■Motohaba:3.2CM
■Sakihaba:0.4cm
■Sori:About 1.5CM
■Tsuka Length:26CM
■Bohi:No Bohi
■Material:LD Steel(high hardness,high toughness tool steel)
■Hamon Style:Fake Suguha Style Hamon
■Blade Style:Shinogi Zukuri
Heat Treatment:  Vacuum Heat Treatment
■Hardness:59HRC
■Toughness:110+J
■With And Without Saya Weight:1191g/987g

Warning:The data is just for reference because the handmade products’s data has error.
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<Polishing>
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■Polishing:Mirror Polishing
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Category:

Tameshigiri Katana has a hardness between  58-59HRC, and the impact toughness is 110J+, Vacuum heat treatment. It is polished by hand, and the overall hardness is too high, so it’s difficult to completely polish away the scratches on the surface. Therefore, compared with traditional art swords, its polishing looks not so beautiful. Its Hamon is a fake straight hamon made later, in order to increase its beauty.

The impact toughness of our tameshigiri katana LD is 59HRC. And the cost to make 59 or 60 is also the same. Then why don’t we make it into 60HRC? (I know some of you always pursue hardness and consider higher hardness is better.) Just because the katana is too long and it’s heat-treated overall, the impact it receives during chopping is too strong, incomparable with a short sword. Therefore the key point is to make it difficult to fracture. And reducing the hardness can greatly increase the fracture toughness, making it not that easy to fracture. (hardness dropped a bit, while fracture toughness increased a lot.) That’s why we make it 59HRC. I think we must get rid of the inherent thinking of short swords. Hardness is not always right. The difference between a short sword and a long sword are like the difference between a sports car and an off-road vehicle. They are completely different.

The advantage of modern high-performance materials when making tameshigiri katana sword is that they are more durable and have better sharpness retention. When test chopping, it is best to cut only bamboo and mats, because bamboo and mats will not let the blade get V-shaped notches.

LD is a high quality and high toughness cold work die steel, with high crack resistance and abrasion. Its bending resistance, toughness, and many other indicators exceed CPM-3V, especially the toughness index. Under the same hardness of 60, the impact toughness of LD is about 115J, and CPM-3V is 95J. They also have almost the same wear resistance, but the anti-rust performance is far behind CPM-3V. However, its price is much lower than CPM-3V. We have tested CPM-3V making standard katana, after bending resistance , side shot, and finally, the blade broke when hitting the back of the blade without a notch. This didn’t happen with the LD. That’s why we gave up on making the CPM-3V steel tameshigiri katana. Maybe we would use CPM-3V steel making tanto and wakizashi.

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