The Due Buoi Santoku Kitchen Knife in the special "Olimpo Knives" section has a 7.08 in long blade in N690 stainless steel with "EXTRA DURO" heat treatment.
We have reached a value of 60 HRC although this is not our only goal because hardness without important flexibility is harmful.
It is not easy to have knives that with such high hardness values remain sharp for a long time and at the same time easy to sharpen.
The critical factor is the flexibility that prevents the edge from microfracting. ruining the sharpness itself.
The flexibility also allows the blade to "feel" the steel for easy sharpening.
This combination of factors requires a special treatment developed over 140 years and which the Due Buoi calls it "EXTRA DURO". While to ensure the necessary sensitivity and safety during use. the ergonomic handle in black technopolymer is full tang fixed with three stainless steel rivets.
Blade Length: 7.08"
Blade Width: 1.77"
Blade Thickness: 0.12"
Totale Length: 12.40"
Weight: 0.50 lb
BÖHLER special steels for the food industry
BÖHLER N690, hardened at 1050 °C, tempered at 150 °C (twice for 2h)