The Blade of the Knife

The Sharpest Edge

The Sharpest Edge

The manufacturing of a Marttiini blade is a demanding and time-consuming process. First a steel mass is rolled into a steel strip, out of which blade preforms are cut. The preforms are then tempered and cooledto the correct hardness.


The basis for the sharpness of a Marttiini knife is its machine ground sharpening angle. At Marttiini's factory in Rovaniemi a blade preform goes through various production phases before being ready for the final critical operation. This phase calls for extraordinary craftsmanship as at the final stage the blade is hand ground, giving it the famous Marttiini sharpness.


Although manufacturing knives is always based on solid old-school craftsmanship, there's a fair share of modern technology involved as well. Marttiini combines the latest automated technology and traditional hands on craftmanship in the manufacturing process, creating the renowned Marttiini quality.

 

 

Blade materials


Stainless chromium steel

Stainless chromium steel

Stainless Chromium Steel
The stainless steel used by Marttiini is a virtually care-free blade material.
A stainless steel blade remains sharp for long. 13% of the steel mixture is chromium, and the hardness of the mixture is 53–54 Rockwell units (HRC).
In some models, we also use high-carbon stainless steel with a HRC of 56-58.

A diamond sharpener is recommended for sharpening chromium steel.

Carbon steel

Carbon steel

Carbon steel
A blade made of carbon steel (chromium 3%, carbon 0,75%, HRC 55–57) is especially good for whittling and is easy to sharpen back to its original sharpness. In maintaining a carbon steel blade, it's important to dry it carefully after each use. It's also good to oil it regularly with unsalted oil, like cooking oil. A carefully cared for carbon steel blade will remain rust free and has a very long lifespan.
 

Carbinox T508

Carbinox T508

Carbinox T508 steel combines the best properties of carbon and chromium steel: toughness, ease of sharpening and extreme durability. The carbon content of the steel mixture is 0.5%, chromium content 8% and it has a hardness of 56–57 HRC. The material is not classified as stainless, although it significantly more corrosion resistant than traditional carbon steel. The basic maintenance of a Carbinox T508 blade requires nothing more than cleaning and drying the blade after use. We do, however, recommend oiling the blade with unsalted oil every now and then.
 

Damascus

Damascus

Damascus
The Damascus blade is made by combining two different steels in thin layers. The blade has 120 steel layers that have been welded together under extreme pressure and heat. The result is a beautifully patterned, stainless and very hard blade (HRC 60) that stays sharp even in extended use.
 

Martef steel coating

Martef steel coating

Martef coating
The stain and moisture repelling Martef coating reduces friction to nearly non-existent level. The coating allows the blade to slice very fluidly through the material being cut, and the blade is very easy to clean after use.