Hello gents, I'm looking for some help identifying some steel, and I thought this would be the place to ask.

What I've got are some razors made in the 1960s, in Japan. The included explanation/warranty card says that they are made from a particular steel that no one I know here seems to know anything about.

The rough translation is this:

"these razors' steel is made from iron sand and is called "Low sulfur low conducting wire". (teiryuuteidousen). レーザ‐の鋼は低硫低導線と云いま して砂鉄より精選されたものなのです。

Does anyone have ANY IDEA what "low sulfur low conducting wire" might have to do with steel? That is a very direct translation of the kanji, but it could be something similar like low conductivity, low ductility...

The explanation goes on to explain how this steel has been in use for a long time, but it wasn't really in wide use until after the end of the war, and that these are the first razors to use this steel. This particular razor is dated 1966.

Any help, imagination included, would be greatly appreciated.