Re: Chrome Moly steel vs. Stainless steel

["atrav" <atrav@copper.net>]

Google produces a lot of sources for spark testing.
Here's a good simple statement-->
#1. The color of the spark. Don't look at anything but the color. 440c and 
high-speed steel will
give a very red spark. Chrome steel will give a bright orange spark. Hard 
carbon steel will give a
nearly white spark. 300 series stainless, Monel. K-Monel. and Hastalloy. will 
give almost no spark
at all. If you use a heavy pressure you may get a few tiny red darts.
http://www.precisionballs.com/material_selection.htm

-Aron-