Due to the ever expanding uses of steel, new grades are always being developed. Therefore, not all material grades are readily found in the Internet. However, online sources are available, for a fee. You might wish to try http://www.metaldata.info/eng/marochniki.php
I used their services before and found them helpful.
HTH!
__________________
Now the darkness only stays the night-time, in the morning it will fade away. -- George Harrison (All Things Must Pass)