[AT] Fw: Steel

[DAVIESW739 at aol.com]

There are two of those that I know off the top of my head
4130  41=steel    30 percent of carbon (medium  hardness)
4140  41=steel   40 percent of carbon  (really hard  steel)  Used where lots 
of strength is required Can be made into very good  tools such as punches 
chisels.
 
If you want to know a lot about the different steels then I suggest this  
site and then download the cross reference  chart.  With 3500  different types 
its hard to know them all. 
 
_http://www.key-to-steel.com/_ (http://www.key-to-steel.com/) 
 
 
It was a lot easier back in the old days when I was as a machinist building  
Tree Shakers. But that was many years ago and about 3496 less types of  steel.
 
I did see one site where it said that the 1020-30 steel was junk  used for 
cheap bolts.  giggle
 
 
Walt  Davies
Cooper Hollow Farm
Monmouth, OR 97361
503 623-0460