The carbon steel blade is especially suitable for carving and is also easy to sharpen to its original sharpness. The regular carbon steel (Cr 0.3%; C 0.75%) has a hardness of HRC 55-57. We also use forged carbon steel (Cr 0.6%; C 0.84%) which is tempered to the hardness HRC 59.5.
It is important to dry it thoroughly after use when caring for a carbon steel blade. It is also good to treat it regularly with salt-free oil, e.g., food oil. Carefully handled carbon steel steels remain rust free and has a very long service life.
Sharpening of carbon steel can be done with a whetstone. Read more.