High carbon steel is fine, the Busse Family of companies use better alloys.

Busse used A2 back in the 80's and 90's, then he swiched to Infi which is close to stainless but performs better than many tool steels.

He experimented with 52100 steel, a ball bearing alloy. It performed well and was spun off to Swamp Rat knife works. They make a knife called the Mischeif 6 which is very similar to the Scrapper 6 except with a full tang and micarta scales.

Scrap Yard is mainly making knives using a modified S7 tool steel alloy.

The Scrapper 6's should be back within a few months. Keep your eyes open and you will be able to get one for retail price.