The composition of this steel is:
Carbon 2.45%
Chromium 5.25%
Vanadium 9.75%
Molybdenum 1.3%

The carbon content puts it in the ultra-high carbon steel which allows it to be made very hard. With proper heat treating it can Rockwell Hardness "C" up around 65. According to Ragnar's Ragweed Forge you need a Rockwell number above 60 to get a good spark.

Chrome is under 11% so it won't be a stainless steel. Also according to Ragnar, stainless steels won't work as a steel striker.

I'd say if you have a peice go ahead and try. Forming it into a striker might be some hard work. Be careful not to decarburize the steel if you are heating it up.

Let me know if it works!

-Blast