Hongasumi Blue_Usuba Knife


本霞・玉青鋼  東形薄刃 

Traditional Japanese knife made of high carbon steel
– Usuba (Vegetable knife)

SKU: KA06 Category: Tags: , ,

Masamoto Hongasumi blue steel knives are made of highly refined Japanese carbon steel and soft iron forged together. The carbon steel forms the cutting edge and the soft iron forms the blade’s body and spine.
The back of the blade is engraved with “青鋼” (Blue steel). Blue steel of chromium and tungsten added to white steel gives much higher wear resistance and longer edge holding. The knife is entirely handmade and finished.


  • Material:     High carbon blue steel; non-stainless
  • Blade:        Single-edged
  • Handle:      Magnolia wood with a water buffalo horn bolster
  • Level:         All
  • Feature:     Right Handed
  • Saya:         Not included


Saya covers:  A saya is not included in this order. Please order separately from the Other page.
For Left-handers:  Left-handed Japanese knives are available to special order. The price will be about 50% over that of the corresponding right-handed knife and delivery will take an extra 3 – 4 weeks.
Shipping:  This knife is normally shipped from Japan. Please note that when it is shipped from Japan, import duties or other taxes may apply.

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Weight 490.00 g
Blade length

7.0″ (180mm), 7.6″ (195mm ), 8.2″ (210mm), 8.8″ (225mm)


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