Yep, they were made in 440C stainless and in chrome plated M2 high speed steel.
Distinguishable by a capitol S inside a circle behind the model name on the stainless models, and a sword on the M2 models.
Currently i own 2 Balmung slicers and a Flamborge Chef knife, all in M2 steel.
One of the slicers is on loan with a friend of mine who is a real Chef with more than 40 years of experience under his belt, and he simply loves the knife.
A bit difficult to get a really good edge on them, but when you do it is there to stay for quite some time.