The Tamahagane SAN TSUBAME knives feature 3-ply stainless steel construction. The middle layer is VG No. 5. This layer is very hard and acts as the cutting edge. The two outside layers are made of SUS410 stainless steel. The outside layers are softer and more stain resistant than the cutting edge and actually protect the cutting edge.
The SAN TSUBAME knives are balanced with a stainless steel weight which attaches to the tang and is visible at the heel of the handle. Not only does this add to the beauty of the design, it also creates fantastic balance.
The SAN TSUBAME wood knives feature a handle that is made of a rich, dark laminated wood. The wood is a dark birch.
The 3-ply stainless steel has an original thickness of 20 mm and is thinned by repeated rolling to a thickness of 2 mm. You might want to look at this rolling process as a modern forging technique. Also, this rolling process removes all the impurities in the steel leaving you with a very hard, very pure stainless steel. After the rolling processes, the V-G No. 5 cutting edge reaches a hardness of 61 degrees on the Rockwell scale and a final thickness of .65 mm. The outside layers each reach a thickness of .675 mm.
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Bertarelli Cutlery Saint Louis Missouri 63110 Phone 314-664-4005 Fax 314-664-4713